[Projects] 2: Original creation of argp/.

19 Jan 2007

--- argp-fmtstream.h	(revision 0)
+++ argp-fmtstream.h	(revision 0)
@@ -0,0 +1,311 @@
+/* Word-wrapping and line-truncating streams.
+   Copyright (C) 1997, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This package emulates glibc `line_wrap_stream' semantics for systems that
+   don't have that.  If the system does have it, it is just a wrapper for
+   that.  This header file is only used internally while compiling argp, and
+   shouldn't be installed.  */
+
+#ifndef _ARGP_FMTSTREAM_H
+#define _ARGP_FMTSTREAM_H
+
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#if _LIBC || (defined (HAVE_FLOCKFILE) && defined(HAVE_PUTC_UNLOCKED) \
+     && defined (HAVE_FPUTS_UNLOCKED) && defined (HAVE_FWRITE_UNLOCKED)
)
+/* Use locking funxtions */
+# define FLOCKFILE(f) flockfile(f)
+# define FUNLOCKFILE(f) funlockfile(f)
+# define PUTC_UNLOCKED(c, f) putc_unlocked((c), (f))
+# define FPUTS_UNLOCKED(s, f) fputs_unlocked((s), (f))
+# define FWRITE_UNLOCKED(b, s, n, f) fwrite_unlocked((b), (s), (n), (f))
+#else
+/* Disable stdio locking */
+# define FLOCKFILE(f)
+# define FUNLOCKFILE(f)
+# define PUTC_UNLOCKED(c, f) putc((c), (f))
+# define FPUTS_UNLOCKED(s, f) fputs((s), (f))
+# define FWRITE_UNLOCKED(b, s, n, f) fwrite((b), (s), (n), (f))
+#endif /* No thread safe i/o */
+
+#if    (_LIBC - 0 && !defined (USE_IN_LIBIO)) \
+    || (defined (__GNU_LIBRARY__) && defined (HAVE_LINEWRAP_H))
+/* line_wrap_stream is available, so use that.  */
+#define ARGP_FMTSTREAM_USE_LINEWRAP
+#endif
+
+#ifdef ARGP_FMTSTREAM_USE_LINEWRAP
+/* Just be a simple wrapper for line_wrap_stream; the semantics are
+   *slightly* different, as line_wrap_stream doesn't actually make a new
+   object, it just modifies the given stream (reversibly) to do
+   line-wrapping.  Since we control who uses this code, it doesn't matter.  */
+
+#include <linewrap.h>
+
+typedef FILE *argp_fmtstream_t;
+
+#define argp_make_fmtstream line_wrap_stream
+#define __argp_make_fmtstream line_wrap_stream
+#define argp_fmtstream_free line_unwrap_stream
+#define __argp_fmtstream_free line_unwrap_stream
+
+#define __argp_fmtstream_putc(fs,ch) putc(ch,fs)
+#define argp_fmtstream_putc(fs,ch) putc(ch,fs)
+#define __argp_fmtstream_puts(fs,str) fputs(str,fs)
+#define argp_fmtstream_puts(fs,str) fputs(str,fs)
+#define __argp_fmtstream_write(fs,str,len) fwrite(str,1,len,fs)
+#define argp_fmtstream_write(fs,str,len) fwrite(str,1,len,fs)
+#define __argp_fmtstream_printf fprintf
+#define argp_fmtstream_printf fprintf
+
+#define __argp_fmtstream_lmargin line_wrap_lmargin
+#define argp_fmtstream_lmargin line_wrap_lmargin
+#define __argp_fmtstream_set_lmargin line_wrap_set_lmargin
+#define argp_fmtstream_set_lmargin line_wrap_set_lmargin
+#define __argp_fmtstream_rmargin line_wrap_rmargin
+#define argp_fmtstream_rmargin line_wrap_rmargin
+#define __argp_fmtstream_set_rmargin line_wrap_set_rmargin
+#define argp_fmtstream_set_rmargin line_wrap_set_rmargin
+#define __argp_fmtstream_wmargin line_wrap_wmargin
+#define argp_fmtstream_wmargin line_wrap_wmargin
+#define __argp_fmtstream_set_wmargin line_wrap_set_wmargin
+#define argp_fmtstream_set_wmargin line_wrap_set_wmargin
+#define __argp_fmtstream_point line_wrap_point
+#define argp_fmtstream_point line_wrap_point
+
+#else /* !ARGP_FMTSTREAM_USE_LINEWRAP */
+/* Guess we have to define our own version.  */
+
+#ifndef __const
+#define __const const
+#endif
+
+
+struct argp_fmtstream
+{
+  FILE *stream;			/* The stream we're outputting to.  */
+
+  size_t lmargin, rmargin;	/* Left and right margins.  */
+  ssize_t wmargin;		/* Margin to wrap to, or -1 to truncate.  */
+
+  /* Point in buffer to which we've processed for wrapping, but not output.  */
+  size_t point_offs;
+  /* Output column at POINT_OFFS, or -1 meaning 0 but don't add lmargin.  */
+  ssize_t point_col;
+
+  char *buf;			/* Output buffer.  */
+  char *p;			/* Current end of text in BUF. */
+  char *end;			/* Absolute end of BUF.  */
+};
+
+typedef struct argp_fmtstream *argp_fmtstream_t;
+
+/* Return an argp_fmtstream that outputs to STREAM, and which prefixes lines
+   written on it with LMARGIN spaces and limits them to RMARGIN columns
+   total.  If WMARGIN >= 0, words that extend past RMARGIN are wrapped by
+   replacing the whitespace before them with a newline and WMARGIN spaces.
+   Otherwise, chars beyond RMARGIN are simply dropped until a newline.
+   Returns NULL if there was an error.  */
+extern argp_fmtstream_t __argp_make_fmtstream (FILE *__stream,
+					       size_t __lmargin,
+					       size_t __rmargin,
+					       ssize_t __wmargin);
+extern argp_fmtstream_t argp_make_fmtstream (FILE *__stream,
+					     size_t __lmargin,
+					     size_t __rmargin,
+					     ssize_t __wmargin);
+
+/* Flush __FS to its stream, and free it (but don't close the stream).  */
+extern void __argp_fmtstream_free (argp_fmtstream_t __fs);
+extern void argp_fmtstream_free (argp_fmtstream_t __fs);
+
+extern ssize_t __argp_fmtstream_printf (argp_fmtstream_t __fs,
+				       __const char *__fmt, ...)
+     PRINTF_STYLE(2,3);
+extern ssize_t argp_fmtstream_printf (argp_fmtstream_t __fs,
+				      __const char *__fmt, ...)
+     PRINTF_STYLE(2,3);
+
+extern int __argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch);
+extern int argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch);
+
+extern int __argp_fmtstream_puts (argp_fmtstream_t __fs, __const char *__str);
+extern int argp_fmtstream_puts (argp_fmtstream_t __fs, __const char *__str);
+
+extern size_t __argp_fmtstream_write (argp_fmtstream_t __fs,
+				      __const char *__str, size_t __len);
+extern size_t argp_fmtstream_write (argp_fmtstream_t __fs,
+				    __const char *__str, size_t __len);
+
+/* Access macros for various bits of state.  */
+#define argp_fmtstream_lmargin(__fs) ((__fs)->lmargin)
+#define argp_fmtstream_rmargin(__fs) ((__fs)->rmargin)
+#define argp_fmtstream_wmargin(__fs) ((__fs)->wmargin)
+#define __argp_fmtstream_lmargin argp_fmtstream_lmargin
+#define __argp_fmtstream_rmargin argp_fmtstream_rmargin
+#define __argp_fmtstream_wmargin argp_fmtstream_wmargin
+
+/* Set __FS's left margin to LMARGIN and return the old value.  */
+extern size_t argp_fmtstream_set_lmargin (argp_fmtstream_t __fs,
+					  size_t __lmargin);
+extern size_t __argp_fmtstream_set_lmargin (argp_fmtstream_t __fs,
+					    size_t __lmargin);
+
+/* Set __FS's right margin to __RMARGIN and return the old value.  */
+extern size_t argp_fmtstream_set_rmargin (argp_fmtstream_t __fs,
+					  size_t __rmargin);
+extern size_t __argp_fmtstream_set_rmargin (argp_fmtstream_t __fs,
+					    size_t __rmargin);
+
+/* Set __FS's wrap margin to __WMARGIN and return the old value.  */
+extern size_t argp_fmtstream_set_wmargin (argp_fmtstream_t __fs,
+					  size_t __wmargin);
+extern size_t __argp_fmtstream_set_wmargin (argp_fmtstream_t __fs,
+					    size_t __wmargin);
+
+/* Return the column number of the current output point in __FS.  */
+extern size_t argp_fmtstream_point (argp_fmtstream_t __fs);
+extern size_t __argp_fmtstream_point (argp_fmtstream_t __fs);
+
+/* Internal routines.  */
+extern void _argp_fmtstream_update (argp_fmtstream_t __fs);
+extern void __argp_fmtstream_update (argp_fmtstream_t __fs);
+extern int _argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
+extern int __argp_fmtstream_ensure (argp_fmtstream_t __fs, size_t __amount);
+
+#ifdef __OPTIMIZE__
+/* Inline versions of above routines.  */
+
+#if !_LIBC
+#define __argp_fmtstream_putc argp_fmtstream_putc
+#define __argp_fmtstream_puts argp_fmtstream_puts
+#define __argp_fmtstream_write argp_fmtstream_write
+#define __argp_fmtstream_set_lmargin argp_fmtstream_set_lmargin
+#define __argp_fmtstream_set_rmargin argp_fmtstream_set_rmargin
+#define __argp_fmtstream_set_wmargin argp_fmtstream_set_wmargin
+#define __argp_fmtstream_point argp_fmtstream_point
+#define __argp_fmtstream_update _argp_fmtstream_update
+#define __argp_fmtstream_ensure _argp_fmtstream_ensure
+#endif
+
+#ifndef ARGP_FS_EI
+#define ARGP_FS_EI extern inline
+#endif
+
+ARGP_FS_EI size_t
+__argp_fmtstream_write (argp_fmtstream_t __fs,
+			__const char *__str, size_t __len)
+{
+  if (__fs->p + __len <= __fs->end || __argp_fmtstream_ensure (__fs, __len))
+    {
+      memcpy (__fs->p, __str, __len);
+      __fs->p += __len;
+      return __len;
+    }
+  else
+    return 0;
+}
+
+ARGP_FS_EI int
+__argp_fmtstream_puts (argp_fmtstream_t __fs, __const char *__str)
+{
+  size_t __len = strlen (__str);
+  if (__len)
+    {
+      size_t __wrote = __argp_fmtstream_write (__fs, __str, __len);
+      return __wrote == __len ? 0 : -1;
+    }
+  else
+    return 0;
+}
+
+ARGP_FS_EI int
+__argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch)
+{
+  if (__fs->p < __fs->end || __argp_fmtstream_ensure (__fs, 1))
+    return *__fs->p++ = __ch;
+  else
+    return EOF;
+}
+
+/* Set __FS's left margin to __LMARGIN and return the old value.  */
+ARGP_FS_EI size_t
+__argp_fmtstream_set_lmargin (argp_fmtstream_t __fs, size_t __lmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->lmargin;
+  __fs->lmargin = __lmargin;
+  return __old;
+}
+
+/* Set __FS's right margin to __RMARGIN and return the old value.  */
+ARGP_FS_EI size_t
+__argp_fmtstream_set_rmargin (argp_fmtstream_t __fs, size_t __rmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->rmargin;
+  __fs->rmargin = __rmargin;
+  return __old;
+}
+
+/* Set FS's wrap margin to __WMARGIN and return the old value.  */
+ARGP_FS_EI size_t
+__argp_fmtstream_set_wmargin (argp_fmtstream_t __fs, size_t __wmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->wmargin;
+  __fs->wmargin = __wmargin;
+  return __old;
+}
+
+/* Return the column number of the current output point in __FS.  */
+ARGP_FS_EI size_t
+__argp_fmtstream_point (argp_fmtstream_t __fs)
+{
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  return __fs->point_col >= 0 ? __fs->point_col : 0;
+}
+
+#if !_LIBC
+#undef __argp_fmtstream_putc
+#undef __argp_fmtstream_puts
+#undef __argp_fmtstream_write
+#undef __argp_fmtstream_set_lmargin
+#undef __argp_fmtstream_set_rmargin
+#undef __argp_fmtstream_set_wmargin
+#undef __argp_fmtstream_point
+#undef __argp_fmtstream_update
+#undef __argp_fmtstream_ensure
+#endif
+
+#endif /* __OPTIMIZE__ */
+
+#endif /* ARGP_FMTSTREAM_USE_LINEWRAP */
+
+#endif /* argp-fmtstream.h */
Index: argp.h
--- argp.h	(revision 0)
+++ argp.h	(revision 0)
@@ -0,0 +1,605 @@
+/* Hierarchial argument parsing.
+   Copyright (C) 1995, 96, 97, 98, 99, 2003, 2005 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _ARGP_H
+#define _ARGP_H
+
+#include <stdio.h>
+#include <ctype.h>
+
+#define __need_error_t
+#include <errno.h>
+
+#ifndef __THROW
+# define __THROW
+#endif
+#ifndef __NTH
+# define __NTH(fct) fct __THROW
+#endif
+
+#ifndef __const
+# define __const const
+#endif
+
+#ifndef __error_t_defined
+typedef int error_t;
+# define __error_t_defined
+#endif
+
+/* FIXME: What's the right way to check for __restrict? Sun's cc seems
+   not to have it. Perhaps it's easiest to just delete the use of
+   __restrict from the prototypes. */
+#ifndef __restrict
+# ifndef __GNUC___
+#  define __restrict
+# endif
+#endif
+
+/* NOTE: We can't use the autoconf tests, since this is supposed to be
+   an installed header file and argp's config.h is of course not
+   installed. */
+#ifndef PRINTF_STYLE
+# if __GNUC__ >= 2
+#  define PRINTF_STYLE(f, a) __attribute__ ((__format__ (__printf__, f, a)))
+# else
+#  define PRINTF_STYLE(f, a)
+# endif
+#endif
+
+
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
+/* A description of a particular option.  A pointer to an array of
+   these is passed in the OPTIONS field of an argp structure.  Each option
+   entry can correspond to one long option and/or one short option; more
+   names for the same option can be added by following an entry in an option
+   array with options having the OPTION_ALIAS flag set.  */
+struct argp_option
+{
+  /* The long option name.  For more than one name for the same option, you
+     can use following options with the OPTION_ALIAS flag set.  */
+  __const char *name;
+
+  /* What key is returned for this option.  If > 0 and printable, then it's
+     also accepted as a short option.  */
+  int key;
+
+  /* If non-NULL, this is the name of the argument associated with this
+     option, which is required unless the OPTION_ARG_OPTIONAL flag is set. */
+  __const char *arg;
+
+  /* OPTION_ flags.  */
+  int flags;
+
+  /* The doc string for this option.  If both NAME and KEY are 0, This string
+     will be printed outdented from the normal option column, making it
+     useful as a group header (it will be the first thing printed in its
+     group); in this usage, it's conventional to end the string with a `:'.  */
+  __const char *doc;
+
+  /* The group this option is in.  In a long help message, options are sorted
+     alphabetically within each group, and the groups presented in the order
+     0, 1, 2, ..., n, -m, ..., -2, -1.  Every entry in an options array with
+     if this field 0 will inherit the group number of the previous entry, or
+     zero if it's the first one, unless its a group header (NAME and KEY both
+     0), in which case, the previous entry + 1 is the default.  Automagic
+     options such as --help are put into group -1.  */
+  int group;
+};
+
+/* The argument associated with this option is optional.  */
+#define OPTION_ARG_OPTIONAL	0x1
+
+/* This option isn't displayed in any help messages.  */
+#define OPTION_HIDDEN	       	0x2
+
+/* This option is an alias for the closest previous non-alias option.  This
+   means that it will be displayed in the same help entry, and will inherit
+   fields other than NAME and KEY from the aliased option.  */
+#define OPTION_ALIAS		0x4
+
+/* This option isn't actually an option (and so should be ignored by the
+   actual option parser), but rather an arbitrary piece of documentation that
+   should be displayed in much the same manner as the options.  If this flag
+   is set, then the option NAME field is displayed unmodified (e.g., no `--'
+   prefix is added) at the left-margin (where a *short* option would normally
+   be displayed), and the documentation string in the normal place.  For
+   purposes of sorting, any leading whitespace and puncuation is ignored,
+   except that if the first non-whitespace character is not `-', this entry
+   is displayed after all options (and OPTION_DOC entries with a leading `-')
+   in the same group.  */
+#define OPTION_DOC		0x8
+
+/* This option shouldn't be included in `long' usage messages (but is still
+   included in help messages).  This is mainly intended for options that are
+   completely documented in an argp's ARGS_DOC field, in which case including
+   the option in the generic usage list would be redundant.  For instance,
+   if ARGS_DOC is "FOO BAR\n-x BLAH", and the `-x' option's purpose is
to
+   distinguish these two cases, -x should probably be marked
+   OPTION_NO_USAGE.  */
+#define OPTION_NO_USAGE		0x10
+
+struct argp;			/* fwd declare this type */
+struct argp_state;		/* " */
+struct argp_child;		/* " */
+
+/* The type of a pointer to an argp parsing function.  */
+typedef error_t (*argp_parser_t) (int key, char *arg,
+				  struct argp_state *state);
+
+/* What to return for unrecognized keys.  For special ARGP_KEY_ keys, such
+   returns will simply be ignored.  For user keys, this error will be turned
+   into EINVAL (if the call to argp_parse is such that errors are propagated
+   back to the user instead of exiting); returning EINVAL itself would result
+   in an immediate stop to parsing in *all* cases.  */
+#define ARGP_ERR_UNKNOWN	E2BIG /* Hurd should never need E2BIG.  XXX */
+
+/* Special values for the KEY argument to an argument parsing function.
+   ARGP_ERR_UNKNOWN should be returned if they aren't understood.
+
+   The sequence of keys to a parsing function is either (where each
+   uppercased word should be prefixed by `ARGP_KEY_' and opt is a user key):
+
+       INIT opt... NO_ARGS END SUCCESS  -- No non-option arguments at all
+   or  INIT (opt | ARG)... END SUCCESS  -- All non-option args parsed
+   or  INIT (opt | ARG)... SUCCESS      -- Some non-option arg unrecognized
+
+   The third case is where every parser returned ARGP_KEY_UNKNOWN for an
+   argument, in which case parsing stops at that argument (returning the
+   unparsed arguments to the caller of argp_parse if requested, or stopping
+   with an error message if not).
+
+   If an error occurs (either detected by argp, or because the parsing
+   function returned an error value), then the parser is called with
+   ARGP_KEY_ERROR, and no further calls are made.  */
+
+/* This is not an option at all, but rather a command line argument.  If a
+   parser receiving this key returns success, the fact is recorded, and the
+   ARGP_KEY_NO_ARGS case won't be used.  HOWEVER, if while processing the
+   argument, a parser function decrements the NEXT field of the state it's
+   passed, the option won't be considered processed; this is to allow you to
+   actually modify the argument (perhaps into an option), and have it
+   processed again.  */
+#define ARGP_KEY_ARG		0
+/* There are remaining arguments not parsed by any parser, which may be found
+   starting at (STATE->argv + STATE->next).  If success is returned, but
+   STATE->next left untouched, it's assumed that all arguments were consume,
+   otherwise, the parser should adjust STATE->next to reflect any arguments
+   consumed.  */
+#define ARGP_KEY_ARGS		0x1000006
+/* There are no more command line arguments at all.  */
+#define ARGP_KEY_END		0x1000001
+/* Because it's common to want to do some special processing if there aren't
+   any non-option args, user parsers are called with this key if they didn't
+   successfully process any non-option arguments.  Called just before
+   ARGP_KEY_END (where more general validity checks on previously parsed
+   arguments can take place).  */
+#define ARGP_KEY_NO_ARGS	0x1000002
+/* Passed in before any parsing is done.  Afterwards, the values of each
+   element of the CHILD_INPUT field, if any, in the state structure is
+   copied to each child's state to be the initial value of the INPUT field.  */
+#define ARGP_KEY_INIT		0x1000003
+/* Use after all other keys, including SUCCESS & END.  */
+#define ARGP_KEY_FINI		0x1000007
+/* Passed in when parsing has successfully been completed (even if there are
+   still arguments remaining).  */
+#define ARGP_KEY_SUCCESS	0x1000004
+/* Passed in if an error occurs.  */
+#define ARGP_KEY_ERROR		0x1000005
+
+/* An argp structure contains a set of options declarations, a function to
+   deal with parsing one, documentation string, a possible vector of child
+   argp's, and perhaps a function to filter help output.  When actually
+   parsing options, getopt is called with the union of all the argp
+   structures chained together through their CHILD pointers, with conflicts
+   being resolved in favor of the first occurrence in the chain.  */
+struct argp
+{
+  /* An array of argp_option structures, terminated by an entry with both
+     NAME and KEY having a value of 0.  */
+  __const struct argp_option *options;
+
+  /* What to do with an option from this structure.  KEY is the key
+     associated with the option, and ARG is any associated argument (NULL if
+     none was supplied).  If KEY isn't understood, ARGP_ERR_UNKNOWN should be
+     returned.  If a non-zero, non-ARGP_ERR_UNKNOWN value is returned, then
+     parsing is stopped immediately, and that value is returned from
+     argp_parse().  For special (non-user-supplied) values of KEY, see the
+     ARGP_KEY_ definitions below.  */
+  argp_parser_t parser;
+
+  /* A string describing what other arguments are wanted by this program.  It
+     is only used by argp_usage to print the `Usage:' message.  If it
+     contains newlines, the strings separated by them are considered
+     alternative usage patterns, and printed on separate lines (lines after
+     the first are prefix by `  or: ' instead of `Usage:').  */
+  __const char *args_doc;
+
+  /* If non-NULL, a string containing extra text to be printed before and
+     after the options in a long help message (separated by a vertical tab
+     `\v' character).  */
+  __const char *doc;
+
+  /* A vector of argp_children structures, terminated by a member with a 0
+     argp field, pointing to child argps should be parsed with this one.  Any
+     conflicts are resolved in favor of this argp, or early argps in the
+     CHILDREN list.  This field is useful if you use libraries that supply
+     their own argp structure, which you want to use in conjunction with your
+     own.  */
+  __const struct argp_child *children;
+
+  /* If non-zero, this should be a function to filter the output of help
+     messages.  KEY is either a key from an option, in which case TEXT is
+     that option's help text, or a special key from the ARGP_KEY_HELP_
+     defines, below, describing which other help text TEXT is.  The function
+     should return either TEXT, if it should be used as-is, a replacement
+     string, which should be malloced, and will be freed by argp, or NULL,
+     meaning `print nothing'.  The value for TEXT is *after* any translation
+     has been done, so if any of the replacement text also needs translation,
+     that should be done by the filter function.  INPUT is either the input
+     supplied to argp_parse, or NULL, if argp_help was called directly.  */
+  char *(*help_filter) (int __key, __const char *__text, void *__input);
+
+  /* If non-zero the strings used in the argp library are translated using
+     the domain described by this string.  Otherwise the currently installed
+     default domain is used.  */
+  const char *argp_domain;
+};
+
+/* Possible KEY arguments to a help filter function.  */
+#define ARGP_KEY_HELP_PRE_DOC	0x2000001 /* Help text preceeding options. */
+#define ARGP_KEY_HELP_POST_DOC	0x2000002 /* Help text following options. */
+#define ARGP_KEY_HELP_HEADER	0x2000003 /* Option header string. */
+#define ARGP_KEY_HELP_EXTRA	0x2000004 /* After all other documentation;
+					     TEXT is NULL for this key.  */
+/* Explanatory note emitted when duplicate option arguments have been
+   suppressed.  */
+#define ARGP_KEY_HELP_DUP_ARGS_NOTE 0x2000005
+#define ARGP_KEY_HELP_ARGS_DOC	0x2000006 /* Argument doc string.  */
+
+/* When an argp has a non-zero CHILDREN field, it should point to a vector of
+   argp_child structures, each of which describes a subsidiary argp.  */
+struct argp_child
+{
+  /* The child parser.  */
+  __const struct argp *argp;
+
+  /* Flags for this child.  */
+  int flags;
+
+  /* If non-zero, an optional header to be printed in help output before the
+     child options.  As a side-effect, a non-zero value forces the child
+     options to be grouped together; to achieve this effect without actually
+     printing a header string, use a value of "".  */
+  __const char *header;
+
+  /* Where to group the child options relative to the other (`consolidated')
+     options in the parent argp; the values are the same as the GROUP field
+     in argp_option structs, but all child-groupings follow parent options at
+     a particular group level.  If both this field and HEADER are zero, then
+     they aren't grouped at all, but rather merged with the parent options
+     (merging the child's grouping levels with the parents).  */
+  int group;
+};
+
+/* Parsing state.  This is provided to parsing functions called by argp,
+   which may examine and, as noted, modify fields.  */
+struct argp_state
+{
+  /* The top level ARGP being parsed.  */
+  __const struct argp *root_argp;
+
+  /* The argument vector being parsed.  May be modified.  */
+  int argc;
+  char **argv;
+
+  /* The index in ARGV of the next arg that to be parsed.  May be modified. */
+  int next;
+
+  /* The flags supplied to argp_parse.  May be modified.  */
+  unsigned flags;
+
+  /* While calling a parsing function with a key of ARGP_KEY_ARG, this is the
+     number of the current arg, starting at zero, and incremented after each
+     such call returns.  At all other times, this is the number of such
+     arguments that have been processed.  */
+  unsigned arg_num;
+
+  /* If non-zero, the index in ARGV of the first argument following a special
+     `--' argument (which prevents anything following being interpreted as an
+     option).  Only set once argument parsing has proceeded past this point. */
+  int quoted;
+
+  /* An arbitrary pointer passed in from the user.  */
+  void *input;
+  /* Values to pass to child parsers.  This vector will be the same length as
+     the number of children for the current parser.  */
+  void **child_inputs;
+
+  /* For the parser's use.  Initialized to 0.  */
+  void *hook;
+
+  /* The name used when printing messages.  This is initialized to ARGV[0],
+     or PROGRAM_INVOCATION_NAME if that is unavailable.  */
+  char *name;
+
+  /* Streams used when argp prints something.  */
+  FILE *err_stream;		/* For errors; initialized to stderr. */
+  FILE *out_stream;		/* For information; initialized to stdout. */
+
+  void *pstate;			/* Private, for use by argp.  */
+};
+
+/* Flags for argp_parse (note that the defaults are those that are
+   convenient for program command line parsing): */
+
+/* Don't ignore the first element of ARGV.  Normally (and always unless
+   ARGP_NO_ERRS is set) the first element of the argument vector is
+   skipped for option parsing purposes, as it corresponds to the program name
+   in a command line.  */
+#define ARGP_PARSE_ARGV0  0x01
+
+/* Don't print error messages for unknown options to stderr; unless this flag
+   is set, ARGP_PARSE_ARGV0 is ignored, as ARGV[0] is used as the program
+   name in the error messages.  This flag implies ARGP_NO_EXIT (on the
+   assumption that silent exiting upon errors is bad behaviour).  */
+#define ARGP_NO_ERRS	0x02
+
+/* Don't parse any non-option args.  Normally non-option args are parsed by
+   calling the parse functions with a key of ARGP_KEY_ARG, and the actual arg
+   as the value.  Since it's impossible to know which parse function wants to
+   handle it, each one is called in turn, until one returns 0 or an error
+   other than ARGP_ERR_UNKNOWN; if an argument is handled by no one, the
+   argp_parse returns prematurely (but with a return value of 0).  If all
+   args have been parsed without error, all parsing functions are called one
+   last time with a key of ARGP_KEY_END.  This flag needn't normally be set,
+   as the normal behavior is to stop parsing as soon as some argument can't
+   be handled.  */
+#define ARGP_NO_ARGS	0x04
+
+/* Parse options and arguments in the same order they occur on the command
+   line -- normally they're rearranged so that all options come first. */
+#define ARGP_IN_ORDER	0x08
+
+/* Don't provide the standard long option --help, which causes usage and
+      option help information to be output to stdout, and exit (0) called. */
+#define ARGP_NO_HELP	0x10
+
+/* Don't exit on errors (they may still result in error messages).  */
+#define ARGP_NO_EXIT	0x20
+
+/* Use the gnu getopt `long-only' rules for parsing arguments.  */
+#define ARGP_LONG_ONLY	0x40
+
+/* Turns off any message-printing/exiting options.  */
+#define ARGP_SILENT    (ARGP_NO_EXIT | ARGP_NO_ERRS | ARGP_NO_HELP)
+
+/* Parse the options strings in ARGC & ARGV according to the options in ARGP.
+   FLAGS is one of the ARGP_ flags above.  If ARG_INDEX is non-NULL, the
+   index in ARGV of the first unparsed option is returned in it.  If an
+   unknown option is present, ARGP_ERR_UNKNOWN is returned; if some parser
+   routine returned a non-zero value, it is returned; otherwise 0 is
+   returned.  This function may also call exit unless the ARGP_NO_HELP flag
+   is set.  INPUT is a pointer to a value to be passed in to the parser.  */
+extern error_t argp_parse (__const struct argp *__restrict __argp,
+			   int __argc, char **__restrict __argv,
+			   unsigned __flags, int *__restrict __arg_index,
+			   void *__restrict __input) __THROW;
+extern error_t __argp_parse (__const struct argp *__restrict __argp,
+			     int __argc, char **__restrict __argv,
+			     unsigned __flags, int *__restrict __arg_index,
+			     void *__restrict __input) __THROW;
+
+/* Global variables.  */
+
+/* If defined or set by the user program to a non-zero value, then a default
+   option --version is added (unless the ARGP_NO_HELP flag is used), which
+   will print this string followed by a newline and exit (unless the
+   ARGP_NO_EXIT flag is used).  Overridden by ARGP_PROGRAM_VERSION_HOOK.  */
+extern __const char *argp_program_version;
+
+/* If defined or set by the user program to a non-zero value, then a default
+   option --version is added (unless the ARGP_NO_HELP flag is used), which
+   calls this function with a stream to print the version to and a pointer to
+   the current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
+   used).  This variable takes precedent over ARGP_PROGRAM_VERSION.  */
+extern void (*argp_program_version_hook) (FILE *__restrict __stream,
+					  struct argp_state *__restrict
+					  __state);
+
+/* If defined or set by the user program, it should point to string that is
+   the bug-reporting address for the program.  It will be printed by
+   argp_help if the ARGP_HELP_BUG_ADDR flag is set (as it is by various
+   standard help messages), embedded in a sentence that says something like
+   `Report bugs to ADDR.'.  */
+extern __const char *argp_program_bug_address;
+
+/* The exit status that argp will use when exiting due to a parsing error.
+   If not defined or set by the user program, this defaults to EX_USAGE from
+   <sysexits.h>.  */
+extern error_t argp_err_exit_status;
+
+/* Flags for argp_help.  */
+#define ARGP_HELP_USAGE		0x01 /* a Usage: message. */
+#define ARGP_HELP_SHORT_USAGE	0x02 /*  " but don't actually print options. */
+#define ARGP_HELP_SEE		0x04 /* a `Try ... for more help' message. */
+#define ARGP_HELP_LONG		0x08 /* a long help message. */
+#define ARGP_HELP_PRE_DOC	0x10 /* doc string preceding long help.  */
+#define ARGP_HELP_POST_DOC	0x20 /* doc string following long help.  */
+#define ARGP_HELP_DOC		(ARGP_HELP_PRE_DOC | ARGP_HELP_POST_DOC)
+#define ARGP_HELP_BUG_ADDR	0x40 /* bug report address */
+#define ARGP_HELP_LONG_ONLY	0x80 /* modify output appropriately to
+					reflect ARGP_LONG_ONLY mode.  */
+
+/* These ARGP_HELP flags are only understood by argp_state_help.  */
+#define ARGP_HELP_EXIT_ERR	0x100 /* Call exit(1) instead of returning.  */
+#define ARGP_HELP_EXIT_OK	0x200 /* Call exit(0) instead of returning.  */
+
+/* The standard thing to do after a program command line parsing error, if an
+   error message has already been printed.  */
+#define ARGP_HELP_STD_ERR \
+  (ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
+/* The standard thing to do after a program command line parsing error, if no
+   more specific error message has been printed.  */
+#define ARGP_HELP_STD_USAGE \
+  (ARGP_HELP_SHORT_USAGE | ARGP_HELP_SEE | ARGP_HELP_EXIT_ERR)
+/* The standard thing to do in response to a --help option.  */
+#define ARGP_HELP_STD_HELP \
+  (ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG | ARGP_HELP_EXIT_OK \
+   | ARGP_HELP_DOC | ARGP_HELP_BUG_ADDR)
+
+/* Output a usage message for ARGP to STREAM.  FLAGS are from the set
+   ARGP_HELP_*.  */
+extern void argp_help (__const struct argp *__restrict __argp,
+		       FILE *__restrict __stream,
+		       unsigned __flags, char *__restrict __name) __THROW;
+extern void __argp_help (__const struct argp *__restrict __argp,
+			 FILE *__restrict __stream, unsigned __flags,
+			 char *__name) __THROW;
+
+/* The following routines are intended to be called from within an argp
+   parsing routine (thus taking an argp_state structure as the first
+   argument).  They may or may not print an error message and exit, depending
+   on the flags in STATE -- in any case, the caller should be prepared for
+   them *not* to exit, and should return an appropiate error after calling
+   them.  [argp_usage & argp_error should probably be called argp_state_...,
+   but they're used often enough that they should be short]  */
+
+/* Output, if appropriate, a usage message for STATE to STREAM.  FLAGS are
+   from the set ARGP_HELP_*.  */
+extern void argp_state_help (__const struct argp_state *__restrict __state,
+			     FILE *__restrict __stream,
+			     unsigned int __flags) __THROW;
+extern void __argp_state_help (__const struct argp_state *__restrict __state,
+			       FILE *__restrict __stream,
+			       unsigned int __flags) __THROW;
+
+/* Possibly output the standard usage message for ARGP to stderr and exit.  */
+extern void argp_usage (__const struct argp_state *__state) __THROW;
+extern void __argp_usage (__const struct argp_state *__state) __THROW;
+
+/* If appropriate, print the printf string FMT and following args, preceded
+   by the program name and `:', to stderr, and followed by a `Try ... --help'
+   message, then exit (1).  */
+extern void argp_error (__const struct argp_state *__restrict __state,
+			__const char *__restrict __fmt, ...) __THROW
+     PRINTF_STYLE(2,3);
+extern void __argp_error (__const struct argp_state *__restrict __state,
+			  __const char *__restrict __fmt, ...) __THROW
+     PRINTF_STYLE(2,3);
+
+/* Similar to the standard gnu error-reporting function error(), but will
+   respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
+   to STATE->err_stream.  This is useful for argument parsing code that is
+   shared between program startup (when exiting is desired) and runtime
+   option parsing (when typically an error code is returned instead).  The
+   difference between this function and argp_error is that the latter is for
+   *parsing errors*, and the former is for other problems that occur during
+   parsing but don't reflect a (syntactic) problem with the input.  */
+extern void argp_failure (__const struct argp_state *__restrict __state,
+			  int __status, int __errnum,
+			  __const char *__restrict __fmt, ...) __THROW
+     PRINTF_STYLE(4,5);
+extern void __argp_failure (__const struct argp_state *__restrict __state,
+			    int __status, int __errnum,
+			    __const char *__restrict __fmt, ...) __THROW
+     PRINTF_STYLE(4,5);
+
+/* Returns true if the option OPT is a valid short option.  */
+extern int _option_is_short (__const struct argp_option *__opt) __THROW;
+extern int __option_is_short (__const struct argp_option *__opt) __THROW;
+
+/* Returns true if the option OPT is in fact the last (unused) entry in an
+   options array.  */
+extern int _option_is_end (__const struct argp_option *__opt) __THROW;
+extern int __option_is_end (__const struct argp_option *__opt) __THROW;
+
+/* Return the input field for ARGP in the parser corresponding to STATE; used
+   by the help routines.  */
+extern void *_argp_input (__const struct argp *__restrict __argp,
+			  __const struct argp_state *__restrict __state)
+     __THROW;
+extern void *__argp_input (__const struct argp *__restrict __argp,
+			   __const struct argp_state *__restrict __state)
+     __THROW;
+
+/* Used for extracting the program name from argv[0] */
+extern char *_argp_basename(char *name) __THROW;
+extern char *__argp_basename(char *name) __THROW;
+
+/* Getting the program name given an argp state */
+extern char *
+_argp_short_program_name(const struct argp_state *state) __THROW;
+extern char *
+__argp_short_program_name(const struct argp_state *state) __THROW;
+
+
+#ifdef __USE_EXTERN_INLINES
+
+# if !_LIBC
+#  define __argp_usage argp_usage
+#  define __argp_state_help argp_state_help
+#  define __option_is_short _option_is_short
+#  define __option_is_end _option_is_end
+# endif
+
+# ifndef ARGP_EI
+#  define ARGP_EI extern __inline__
+# endif
+
+ARGP_EI void
+__NTH(__argp_usage (__const struct argp_state *__state))
+{
+  __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
+}
+
+ARGP_EI int
+__NTH(__option_is_short (__const struct argp_option *__opt))
+{
+  if (__opt->flags & OPTION_DOC)
+    return 0;
+  else
+    {
+      int __key = __opt->key;
+      return __key > 0 && isprint (__key);
+    }
+}
+
+ARGP_EI int
+__NTH(__option_is_end (__const struct argp_option *__opt))
+{
+  return !__opt->key && !__opt->name && !__opt->doc &&
!__opt->group;
+}
+
+# if !_LIBC
+#  undef __argp_usage
+#  undef __argp_state_help
+#  undef __option_is_short
+#  undef __option_is_end
+# endif
+#endif /* Use extern inlines.  */
+
+#ifdef  __cplusplus
+}
+#endif
+
+#endif /* argp.h */
Index: strndup.c
--- strndup.c	(revision 0)
+++ strndup.c	(revision 0)
@@ -0,0 +1,31 @@
+/* strndup.c
+ *
+ */
+
+/* Written by Niels Möller &lt;nisse(a)lysator.liu.se&gt;
+ *
+ * This file is hereby placed in the public domain.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+char *
+strndup (const char *s, size_t size)
+{
+  char *r;
+  char *end = memchr(s, 0, size);
+  
+  if (end)
+    /* Length + 1 */
+    size = end - s + 1;
+  
+  r = malloc(size);
+
+  if (size)
+    {
+      memcpy(r, s, size-1);
+      r[size-1] = '\0';
+    }
+  return r;
+}
Index: argp-parse.c
--- argp-parse.c	(revision 0)
+++ argp-parse.c	(revision 0)
@@ -0,0 +1,1303 @@
+/* Hierarchial argument parsing
+   Copyright (C) 1995, 96, 97, 98, 99, 2000,2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* AIX requires this to be the first thing in the file.  */
+#ifndef __GNUC__
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+#include <assert.h>
+
+#ifndef _
+/* This is for other GNU distributions with internationalized messages.
+   When compiling libc, the _ macro is predefined.  */
+# if defined HAVE_LIBINTL_H || defined _LIBC
+#  include <libintl.h>
+#  ifdef _LIBC
+#   undef dgettext
+#   define dgettext(domain, msgid) __dcgettext (domain, msgid, LC_MESSAGES)
+#  endif
+# else
+#  define dgettext(domain, msgid) (msgid)
+#  define gettext(msgid) (msgid)
+# endif
+#endif
+#ifndef N_
+# define N_(msgid) (msgid)
+#endif
+
+#if _LIBC - 0
+#include <bits/libc-lock.h>
+#else
+#ifdef HAVE_CTHREADS_H
+#include <cthreads.h>
+#endif
+#endif /* _LIBC */
+
+#include "argp.h"
+#include "argp-namefrob.h"
+
+
+/* The meta-argument used to prevent any further arguments being interpreted
+   as options.  */
+#define QUOTE "--"
+
+/* EZ alias for ARGP_ERR_UNKNOWN.  */
+#define EBADKEY ARGP_ERR_UNKNOWN
+
+
+/* Default options.  */
+
+/* When argp is given the --HANG switch, _ARGP_HANG is set and argp will sleep
+   for one second intervals, decrementing _ARGP_HANG until it's zero.  Thus
+   you can force the program to continue by attaching a debugger and setting
+   it to 0 yourself.  */
+volatile int _argp_hang;
+
+#define OPT_PROGNAME	-2
+#define OPT_USAGE	-3
+#define OPT_HANG	-4
+
+static const struct argp_option argp_default_options[] =
+{
+  {"help",	  '?',    	0, 0,  N_("Give this help list"), -1},
+  {"usage",	  OPT_USAGE,	0, 0,  N_("Give a short usage message"), 0
},
+  {"program-name",OPT_PROGNAME,"NAME", OPTION_HIDDEN,
+     N_("Set the program name"), 0},
+  {"HANG",	  OPT_HANG,    "SECS", OPTION_ARG_OPTIONAL |
OPTION_HIDDEN,
+     N_("Hang for SECS seconds (default 3600)"), 0 },
+  {0, 0, 0, 0, 0, 0}
+};
+
+static error_t
+argp_default_parser (int key, char *arg, struct argp_state *state)
+{
+  switch (key)
+    {
+    case '?':
+      __argp_state_help (state, state->out_stream, ARGP_HELP_STD_HELP);
+      break;
+    case OPT_USAGE:
+      __argp_state_help (state, state->out_stream,
+		       ARGP_HELP_USAGE | ARGP_HELP_EXIT_OK);
+      break;
+
+    case OPT_PROGNAME:		/* Set the program name.  */
+#if HAVE_DECL_PROGRAM_INVOCATION_NAME
+      program_invocation_name = arg;
+#endif
+      /* [Note that some systems only have PROGRAM_INVOCATION_SHORT_NAME (aka
+	 __PROGNAME), in which case, PROGRAM_INVOCATION_NAME is just defined
+	 to be that, so we have to be a bit careful here.]  */
+
+      /* Update what we use for messages.  */
+
+      state->name = __argp_basename(arg);
+      
+#if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
+      program_invocation_short_name = state->name;
+#endif
+
+      if ((state->flags & (ARGP_PARSE_ARGV0 | ARGP_NO_ERRS))
+	  == ARGP_PARSE_ARGV0)
+	/* Update what getopt uses too.  */
+	state->argv[0] = arg;
+
+      break;
+
+    case OPT_HANG:
+      _argp_hang = atoi (arg ? arg : "3600");
+      fprintf(state->err_stream, "%s: pid = %ld\n",
+	      state->name, (long) getpid());
+      while (_argp_hang-- > 0)
+	__sleep (1);
+      break;
+
+    default:
+      return EBADKEY;
+    }
+  return 0;
+}
+
+static const struct argp argp_default_argp =
+  {argp_default_options, &argp_default_parser, NULL, NULL, NULL, NULL,
"libc"};
+
+
+static const struct argp_option argp_version_options[] =
+{
+  {"version",	  'V',    	0, 0,  N_("Print program version"),
-1},
+  {0, 0, 0, 0, 0, 0 }
+};
+
+static error_t
+argp_version_parser (int key, char *arg UNUSED, struct argp_state *state)
+{
+  switch (key)
+    {
+    case 'V':
+      if (argp_program_version_hook)
+	(*argp_program_version_hook) (state->out_stream, state);
+      else if (argp_program_version)
+	fprintf (state->out_stream, "%s\n", argp_program_version);
+      else
+	__argp_error (state, dgettext (state->root_argp->argp_domain,
+				       "(PROGRAM ERROR) No version known!?"));
+      if (! (state->flags & ARGP_NO_EXIT))
+	exit (0);
+      break;
+    default:
+      return EBADKEY;
+    }
+  return 0;
+}
+
+static const struct argp argp_version_argp =
+  {argp_version_options, &argp_version_parser, NULL, NULL, NULL, NULL,
"libc"};
+
+
+
+/* The state of a `group' during parsing.  Each group corresponds to a
+   particular argp structure from the tree of such descending from the top
+   level argp passed to argp_parse.  */
+struct group
+{
+  /* This group's parsing function.  */
+  argp_parser_t parser;
+
+  /* Which argp this group is from.  */
+  const struct argp *argp;
+
+  /* The number of non-option args sucessfully handled by this parser.  */
+  unsigned args_processed;
+
+  /* This group's parser's parent's group.  */
+  struct group *parent;
+  unsigned parent_index;	/* And the our position in the parent.   */
+
+  /* These fields are swapped into and out of the state structure when
+     calling this group's parser.  */
+  void *input, **child_inputs;
+  void *hook;
+};
+
+/* Call GROUP's parser with KEY and ARG, swapping any group-specific info
+   from STATE before calling, and back into state afterwards.  If GROUP has
+   no parser, EBADKEY is returned.  */
+static error_t
+group_parse (struct group *group, struct argp_state *state, int key, char *arg)
+{
+  if (group->parser)
+    {
+      error_t err;
+      state->hook = group->hook;
+      state->input = group->input;
+      state->child_inputs = group->child_inputs;
+      state->arg_num = group->args_processed;
+      err = (*group->parser)(key, arg, state);
+      group->hook = state->hook;
+      return err;
+    }
+  else
+    return EBADKEY;
+}
+
+struct parser
+{
+  const struct argp *argp;
+
+  const char *posixly_correct;
+  
+  /* True if there are only no-option arguments left, which are just
+     passed verbatim with ARGP_KEY_ARG. This is set if we encounter a
+     quote, or the end of the proper options, but may be cleared again
+     if the user moves the next argument pointer backwards. */
+  int args_only;
+
+  /* Describe how to deal with options that follow non-option ARGV-elements.
+
+     If the caller did not specify anything, the default is
+     REQUIRE_ORDER if the environment variable POSIXLY_CORRECT is
+     defined, PERMUTE otherwise.
+
+     REQUIRE_ORDER means don't recognize them as options; stop option
+     processing when the first non-option is seen. This is what Unix
+     does. This mode of operation is selected by either setting the
+     environment variable POSIXLY_CORRECT, or using `+' as the first
+     character of the list of option characters.
+
+     PERMUTE is the default. We permute the contents of ARGV as we
+     scan, so that eventually all the non-options are at the end. This
+     allows options to be given in any order, even with programs that
+     were not written to expect this.
+
+     RETURN_IN_ORDER is an option available to programs that were
+     written to expect options and other ARGV-elements in any order
+     and that care about the ordering of the two. We describe each
+     non-option ARGV-element as if it were the argument of an option
+     with character code 1. Using `-' as the first character of the
+     list of option characters selects this mode of operation.
+
+  */
+  enum { REQUIRE_ORDER, PERMUTE, RETURN_IN_ORDER } ordering;
+
+  /* A segment of non-option arguments that have been skipped for
+     later processing, after all options. `first_nonopt' is the index
+     in ARGV of the first of them; `last_nonopt' is the index after
+     the last of them.
+
+     If quoted or args_only is non-zero, this segment should be empty. */
+
+  /* FIXME: I'd prefer to use unsigned, but it's more consistent to
+     use the same type as for state.next. */
+  int first_nonopt;
+  int last_nonopt;
+  
+  /* String of all recognized short options. Needed for ARGP_LONG_ONLY. */
+  /* FIXME: Perhaps change to a pointer to a suitable bitmap instead? */
+  char *short_opts;
+
+  /* For parsing combined short options. */
+  char *nextchar;
+  
+  /* States of the various parsing groups.  */
+  struct group *groups;
+  /* The end of the GROUPS array.  */
+  struct group *egroup;
+  /* An vector containing storage for the CHILD_INPUTS field in all groups.  */
+  void **child_inputs;
+  
+  /* State block supplied to parsing routines.  */
+  struct argp_state state;
+
+  /* Memory used by this parser.  */
+  void *storage;
+};
+
+/* Search for a group defining a short option. */
+static const struct argp_option *
+find_short_option(struct parser *parser, int key, struct group **p)
+{
+  struct group *group;
+  
+  assert(key >= 0);
+  assert(isascii(key));
+
+  for (group = parser->groups; group < parser->egroup; group++)
+    {
+      const struct argp_option *opts;
+
+      for (opts = group->argp->options; !__option_is_end(opts); opts++)
+	if (opts->key == key)
+	  {
+	    *p = group;
+	    return opts;
+	  }
+    }
+  return NULL;
+}
+
+enum match_result { MATCH_EXACT, MATCH_PARTIAL, MATCH_NO };
+
+/* If defined, allow complete.el-like abbreviations of long options. */
+#ifndef ARGP_COMPLETE
+#define ARGP_COMPLETE 0
+#endif
+
+/* Matches an encountern long-option argument ARG against an option NAME.
+ * ARG is terminated by NUL or '='. */
+static enum match_result
+match_option(const char *arg, const char *name)
+{
+  unsigned i, j;
+  for (i = j = 0;; i++, j++)
+    {
+      switch(arg[i])
+	{
+	case '\0':
+	case '=':
+	  return name[j] ? MATCH_PARTIAL : MATCH_EXACT;
+#if ARGP_COMPLETE
+	case '-':
+	  while (name[j] != '-')
+	    if (!name[j++])
+	      return MATCH_NO;
+	  break;
+#endif
+	default:
+	  if (arg[i] != name[j])
+	    return MATCH_NO;
+	}
+    }
+}
+
+static const struct argp_option *
+find_long_option(struct parser *parser,
+		 const char *arg,
+		 struct group **p)
+{
+  struct group *group;
+
+  /* Partial match found so far. */
+  struct group *matched_group = NULL;
+  const struct argp_option *matched_option = NULL;
+
+  /* Number of partial matches. */
+  int num_partial = 0;
+
+  for (group = parser->groups; group < parser->egroup; group++)
+    {
+      const struct argp_option *opts;
+
+      for (opts = group->argp->options; !__option_is_end(opts); opts++)
+	{
+	  if (!opts->name)
+	    continue;
+	  switch (match_option(arg, opts->name))
+	    {
+	    case MATCH_NO:
+	      break;
+	    case MATCH_PARTIAL:
+	      num_partial++;
+
+	      matched_group = group;
+	      matched_option = opts;
+
+	      break;
+	    case MATCH_EXACT:
+	      /* Exact match. */
+	      *p = group;
+	      return opts;
+	    }
+	}
+    }
+  if (num_partial == 1)
+    {
+      *p = matched_group;
+      return matched_option;
+    }
+
+  return NULL;
+}
+
+
+/* The next usable entries in the various parser tables being filled in by
+   convert_options.  */
+struct parser_convert_state
+{
+  struct parser *parser;
+  char *short_end;
+  void **child_inputs_end;
+};
+
+/* Initialize GROUP from ARGP. If CVT->SHORT_END is non-NULL, short
+   options are recorded in the short options string. Returns the next
+   unused group entry. CVT holds state used during the conversion. */
+static struct group *
+convert_options (const struct argp *argp,
+		 struct group *parent, unsigned parent_index,
+		 struct group *group, struct parser_convert_state *cvt)
+{
+  const struct argp_option *opt = argp->options;
+  const struct argp_child *children = argp->children;
+
+  if (opt || argp->parser)
+    {
+      /* This parser needs a group. */
+      if (cvt->short_end)
+	{
+	  /* Record any short options. */
+	  for ( ; !__option_is_end (opt); opt++)
+	    if (__option_is_short(opt))
+	      *cvt->short_end++ = opt->key;
+	}
+      
+      group->parser = argp->parser;
+      group->argp = argp;
+      group->args_processed = 0;
+      group->parent = parent;
+      group->parent_index = parent_index;
+      group->input = 0;
+      group->hook = 0;
+      group->child_inputs = 0;
+      
+      if (children)
+	/* Assign GROUP's CHILD_INPUTS field some space from
+	   CVT->child_inputs_end.*/
+	{
+	  unsigned num_children = 0;
+	  while (children[num_children].argp)
+	    num_children++;
+	  group->child_inputs = cvt->child_inputs_end;
+	  cvt->child_inputs_end += num_children;
+	}
+      parent = group++;
+    }
+  else
+    parent = 0;
+
+  if (children)
+    {
+      unsigned index = 0;
+      while (children->argp)
+	group =
+	  convert_options (children++->argp, parent, index++, group, cvt);
+    }
+
+  return group;
+}
+/* Allocate and initialize the group structures, so that they are
+   ordered as if by traversing the corresponding argp parser tree in
+   pre-order. Also build the list of short options, if that is needed. */
+static void
+parser_convert (struct parser *parser, const struct argp *argp)
+{
+  struct parser_convert_state cvt;
+
+  cvt.parser = parser;
+  cvt.short_end = parser->short_opts;
+  cvt.child_inputs_end = parser->child_inputs;
+
+  parser->argp = argp;
+
+  if (argp)
+    parser->egroup = convert_options (argp, 0, 0, parser->groups, &cvt);
+  else
+    parser->egroup = parser->groups; /* No parsers at all! */
+
+  if (parser->short_opts)
+    *cvt.short_end ='\0';
+}
+
+/* Lengths of various parser fields which we will allocated.  */
+struct parser_sizes
+{
+  /* Needed only ARGP_LONG_ONLY */
+  size_t short_len;		/* Number of short options.  */
+
+  size_t num_groups;		/* Group structures we allocate.  */
+  size_t num_child_inputs;	/* Child input slots.  */
+};
+
+/* For ARGP, increments the NUM_GROUPS field in SZS by the total
+   number of argp structures descended from it, and the SHORT_LEN by
+   the total number of short options. */
+static void
+calc_sizes (const struct argp *argp,  struct parser_sizes *szs)
+{
+  const struct argp_child *child = argp->children;
+  const struct argp_option *opt = argp->options;
+
+  if (opt || argp->parser)
+    {
+      /* This parser needs a group. */
+      szs->num_groups++;
+      if (opt)
+	{
+	  while (__option_is_short (opt++))
+	    szs->short_len++;
+	}
+    }
+
+  if (child)
+    while (child->argp)
+      {
+	calc_sizes ((child++)->argp, szs);
+	szs->num_child_inputs++;
+      }
+}
+
+/* Initializes PARSER to parse ARGP in a manner described by FLAGS.  */
+static error_t
+parser_init (struct parser *parser, const struct argp *argp,
+	     int argc, char **argv, int flags, void *input)
+{
+  error_t err = 0;
+  struct group *group;
+  struct parser_sizes szs;
+
+  parser->posixly_correct = getenv ("POSIXLY_CORRECT");
+
+  if (flags & ARGP_IN_ORDER)
+    parser->ordering = RETURN_IN_ORDER;
+  else if (flags & ARGP_NO_ARGS)
+    parser->ordering = REQUIRE_ORDER;
+  else if (parser->posixly_correct)
+    parser->ordering = REQUIRE_ORDER;
+  else
+    parser->ordering = PERMUTE;
+  
+  szs.short_len = 0;
+  szs.num_groups = 0;
+  szs.num_child_inputs = 0;
+
+  if (argp)
+    calc_sizes (argp, &szs);
+
+  if (!(flags & ARGP_LONG_ONLY))
+    /* We have no use for the short option array. */
+    szs.short_len = 0;
+  
+  /* Lengths of the various bits of storage used by PARSER.  */
+#define GLEN (szs.num_groups + 1) * sizeof (struct group)
+#define CLEN (szs.num_child_inputs * sizeof (void *))
+#define SLEN (szs.short_len + 1)
+#define STORAGE(offset) ((void *) (((char *) parser->storage) + (offset)))
+
+  parser->storage = malloc (GLEN + CLEN + SLEN);
+  if (! parser->storage)
+    return ENOMEM;
+
+  parser->groups = parser->storage;
+
+  parser->child_inputs = STORAGE(GLEN);
+  memset (parser->child_inputs, 0, szs.num_child_inputs * sizeof (void *));
+
+  if (flags & ARGP_LONG_ONLY)
+    parser->short_opts = STORAGE(GLEN + CLEN);
+  else
+    parser->short_opts = NULL;
+
+  parser_convert (parser, argp);
+
+  memset (&parser->state, 0, sizeof (struct argp_state));
+  
+  parser->state.root_argp = parser->argp;
+  parser->state.argc = argc;
+  parser->state.argv = argv;
+  parser->state.flags = flags;
+  parser->state.err_stream = stderr;
+  parser->state.out_stream = stdout;
+  parser->state.pstate = parser;
+
+  parser->args_only = 0;
+  parser->nextchar = NULL;
+  parser->first_nonopt = parser->last_nonopt = 0;
+    
+  /* Call each parser for the first time, giving it a chance to propagate
+     values to child parsers.  */
+  if (parser->groups < parser->egroup)
+    parser->groups->input = input;
+  for (group = parser->groups;
+       group < parser->egroup && (!err || err == EBADKEY);
+       group++)
+    {
+      if (group->parent)
+	/* If a child parser, get the initial input value from the parent. */
+	group->input = group->parent->child_inputs[group->parent_index];
+
+      if (!group->parser
+	  && group->argp->children &&
group->argp->children->argp)
+	/* For the special case where no parsing function is supplied for an
+	   argp, propagate its input to its first child, if any (this just
+	   makes very simple wrapper argps more convenient).  */
+	group->child_inputs[0] = group->input;
+
+      err = group_parse (group, &parser->state, ARGP_KEY_INIT, 0);
+    }
+  if (err == EBADKEY)
+    err = 0;			/* Some parser didn't understand.  */
+
+  if (err)
+    return err;
+
+  if (argv[0] && !(parser->state.flags & ARGP_PARSE_ARGV0))
+    /* There's an argv[0]; use it for messages.  */
+    {
+      parser->state.name = __argp_basename(argv[0]);
+
+      /* Don't parse it as an argument. */
+      parser->state.next = 1;
+    }
+  else
+    parser->state.name = __argp_short_program_name(NULL);
+  
+  return 0;
+}
+
+/* Free any storage consumed by PARSER (but not PARSER itself).  */
+static error_t
+parser_finalize (struct parser *parser,
+		 error_t err, int arg_ebadkey, int *end_index)
+{
+  struct group *group;
+
+  if (err == EBADKEY && arg_ebadkey)
+    /* Suppress errors generated by unparsed arguments.  */
+    err = 0;
+
+  if (! err)
+    {
+      if (parser->state.next == parser->state.argc)
+	/* We successfully parsed all arguments!  Call all the parsers again,
+	   just a few more times... */
+	{
+	  for (group = parser->groups;
+	       group < parser->egroup && (!err || err==EBADKEY);
+	       group++)
+	    if (group->args_processed == 0)
+	      err = group_parse (group, &parser->state, ARGP_KEY_NO_ARGS, 0);
+	  for (group = parser->egroup - 1;
+	       group >= parser->groups && (!err || err==EBADKEY);
+	       group--)
+	    err = group_parse (group, &parser->state, ARGP_KEY_END, 0);
+
+	  if (err == EBADKEY)
+	    err = 0;		/* Some parser didn't understand.  */
+
+	  /* Tell the user that all arguments are parsed.  */
+	  if (end_index)
+	    *end_index = parser->state.next;
+	}
+      else if (end_index)
+	/* Return any remaining arguments to the user.  */
+	*end_index = parser->state.next;
+      else
+	/* No way to return the remaining arguments, they must be bogus. */
+	{
+	  if (!(parser->state.flags & ARGP_NO_ERRS)
+	      && parser->state.err_stream)
+	    fprintf (parser->state.err_stream,
+		     dgettext (parser->argp->argp_domain,
+			       "%s: Too many arguments\n"),
+		     parser->state.name);
+	  err = EBADKEY;
+	}
+    }
+
+  /* Okay, we're all done, with either an error or success; call the parsers
+     to indicate which one.  */
+
+  if (err)
+    {
+      /* Maybe print an error message.  */
+      if (err == EBADKEY)
+	/* An appropriate message describing what the error was should have
+	   been printed earlier.  */
+	__argp_state_help (&parser->state, parser->state.err_stream,
+			   ARGP_HELP_STD_ERR);
+
+      /* Since we didn't exit, give each parser an error indication.  */
+      for (group = parser->groups; group < parser->egroup; group++)
+	group_parse (group, &parser->state, ARGP_KEY_ERROR, 0);
+    }
+  else
+    /* Notify parsers of success, and propagate back values from parsers.  */
+    {
+      /* We pass over the groups in reverse order so that child groups are
+	 given a chance to do there processing before passing back a value to
+	 the parent.  */
+      for (group = parser->egroup - 1
+	   ; group >= parser->groups && (!err || err == EBADKEY)
+	   ; group--)
+	err = group_parse (group, &parser->state, ARGP_KEY_SUCCESS, 0);
+      if (err == EBADKEY)
+	err = 0;		/* Some parser didn't understand.  */
+    }
+
+  /* Call parsers once more, to do any final cleanup.  Errors are ignored.  */
+  for (group = parser->egroup - 1; group >= parser->groups; group--)
+    group_parse (group, &parser->state, ARGP_KEY_FINI, 0);
+
+  if (err == EBADKEY)
+    err = EINVAL;
+
+  free (parser->storage);
+
+  return err;
+}
+
+/* Call the user parsers to parse the non-option argument VAL, at the
+   current position, returning any error. The state NEXT pointer
+   should point to the argument; this function will adjust it
+   correctly to reflect however many args actually end up being
+   consumed. */
+static error_t
+parser_parse_arg (struct parser *parser, char *val)
+{
+  /* Save the starting value of NEXT */
+  int index = parser->state.next;
+  error_t err = EBADKEY;
+  struct group *group;
+  int key = 0;			/* Which of ARGP_KEY_ARG[S] we used.  */
+
+  /* Try to parse the argument in each parser.  */
+  for (group = parser->groups
+       ; group < parser->egroup && err == EBADKEY
+       ; group++)
+    {
+      parser->state.next++;	/* For ARGP_KEY_ARG, consume the arg.  */
+      key = ARGP_KEY_ARG;
+      err = group_parse (group, &parser->state, key, val);
+
+      if (err == EBADKEY)
+	/* This parser doesn't like ARGP_KEY_ARG; try ARGP_KEY_ARGS instead. */
+	{
+	  parser->state.next--;	/* For ARGP_KEY_ARGS, put back the arg.  */
+	  key = ARGP_KEY_ARGS;
+	  err = group_parse (group, &parser->state, key, 0);
+	}
+    }
+
+  if (! err)
+    {
+      if (key == ARGP_KEY_ARGS)
+	/* The default for ARGP_KEY_ARGS is to assume that if NEXT isn't
+	   changed by the user, *all* arguments should be considered
+	   consumed.  */
+	parser->state.next = parser->state.argc;
+
+      if (parser->state.next > index)
+	/* Remember that we successfully processed a non-option
+	   argument -- but only if the user hasn't gotten tricky and set
+	   the clock back.  */
+	(--group)->args_processed += (parser->state.next - index);
+      else
+	/* The user wants to reparse some args, so try looking for options again.  */
+	parser->args_only = 0;
+    }
+
+  return err;
+}
+
+/* Exchange two adjacent subsequences of ARGV.
+   One subsequence is elements [first_nonopt,last_nonopt)
+   which contains all the non-options that have been skipped so far.
+   The other is elements [last_nonopt,next), which contains all
+   the options processed since those non-options were skipped.
+
+   `first_nonopt' and `last_nonopt' are relocated so that they describe
+   the new indices of the non-options in ARGV after they are moved.  */
+
+static void
+exchange (struct parser *parser)
+{
+  int bottom = parser->first_nonopt;
+  int middle = parser->last_nonopt;
+  int top = parser->state.next;
+  char **argv = parser->state.argv;
+  
+  char *tem;
+
+  /* Exchange the shorter segment with the far end of the longer segment.
+     That puts the shorter segment into the right place.
+     It leaves the longer segment in the right place overall,
+     but it consists of two parts that need to be swapped next.  */
+
+  while (top > middle && middle > bottom)
+    {
+      if (top - middle > middle - bottom)
+	{
+	  /* Bottom segment is the short one.  */
+	  int len = middle - bottom;
+	  register int i;
+
+	  /* Swap it with the top part of the top segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[top - (middle - bottom) + i];
+	      argv[top - (middle - bottom) + i] = tem;
+	    }
+	  /* Exclude the moved bottom segment from further swapping.  */
+	  top -= len;
+	}
+      else
+	{
+	  /* Top segment is the short one.  */
+	  int len = top - middle;
+	  register int i;
+
+	  /* Swap it with the bottom part of the bottom segment.  */
+	  for (i = 0; i < len; i++)
+	    {
+	      tem = argv[bottom + i];
+	      argv[bottom + i] = argv[middle + i];
+	      argv[middle + i] = tem;
+	    }
+	  /* Exclude the moved top segment from further swapping.  */
+	  bottom += len;
+	}
+    }
+
+  /* Update records for the slots the non-options now occupy.  */
+
+  parser->first_nonopt += (parser->state.next - parser->last_nonopt);
+  parser->last_nonopt = parser->state.next;
+}
+
+
+
+enum arg_type { ARG_ARG, ARG_SHORT_OPTION,
+		ARG_LONG_OPTION, ARG_LONG_ONLY_OPTION,
+		ARG_QUOTE };
+
+static enum arg_type
+classify_arg(struct parser *parser, char *arg, char **opt)
+{
+  if (arg[0] == '-')
+    /* Looks like an option... */
+    switch (arg[1])
+      {
+      case '\0':
+	/* "-" is not an option. */
+	return ARG_ARG;
+      case '-':
+	/* Long option, or quote. */
+	if (!arg[2])
+	  return ARG_QUOTE;
+	  
+	/* A long option. */
+	if (opt)
+	  *opt = arg + 2;
+	return ARG_LONG_OPTION;
+
+      default:
+	/* Short option. But if ARGP_LONG_ONLY, it can also be a long option. */
+
+	if (opt)
+	  *opt = arg + 1;
+
+	if (parser->state.flags & ARGP_LONG_ONLY)
+	  {
+	    /* Rules from getopt.c:
+
+	       If long_only and the ARGV-element has the form "-f",
+	       where f is a valid short option, don't consider it an
+	       abbreviated form of a long option that starts with f.
+	       Otherwise there would be no way to give the -f short
+	       option.
+
+	       On the other hand, if there's a long option "fubar" and
+	       the ARGV-element is "-fu", do consider that an
+	       abbreviation of the long option, just like "--fu", and
+	       not "-f" with arg "u".
+
+	       This distinction seems to be the most useful approach. */
+
+	    assert(parser->short_opts);
+	    
+	    if (arg[2] || !strchr(parser->short_opts, arg[1]))
+	      return ARG_LONG_ONLY_OPTION;
+	  }
+
+	return ARG_SHORT_OPTION;
+      }
+  
+  else
+    return ARG_ARG;
+}
+
+/* Parse the next argument in PARSER (as indicated by PARSER->state.next).
+   Any error from the parsers is returned, and *ARGP_EBADKEY indicates
+   whether a value of EBADKEY is due to an unrecognized argument (which is
+   generally not fatal).  */
+static error_t
+parser_parse_next (struct parser *parser, int *arg_ebadkey)
+{
+  if (parser->state.quoted && parser->state.next <
parser->state.quoted)
+    /* The next argument pointer has been moved to before the quoted
+       region, so pretend we never saw the quoting `--', and start
+       looking for options again. If the `--' is still there we'll just
+       process it one more time. */
+    parser->state.quoted = parser->args_only = 0;
+
+  /* Give FIRST_NONOPT & LAST_NONOPT rational values if NEXT has been
+     moved back by the user (who may also have changed the arguments).  */
+  if (parser->last_nonopt > parser->state.next)
+    parser->last_nonopt = parser->state.next;
+  if (parser->first_nonopt > parser->state.next)
+    parser->first_nonopt = parser->state.next;
+
+  if (parser->nextchar)
+    /* Deal with short options. */
+    {
+      struct group *group;
+      char c;
+      const struct argp_option *option;
+      char *value = NULL;;
+
+      assert(!parser->args_only);
+
+      c = *parser->nextchar++;
+      
+      option = find_short_option(parser, c, &group);
+      if (!option)
+	{
+	  if (parser->posixly_correct)
+	    /* 1003.2 specifies the format of this message.  */
+	    fprintf (parser->state.err_stream,
+		     dgettext(parser->state.root_argp->argp_domain,
+			      "%s: illegal option -- %c\n"),
+		     parser->state.name, c);
+	  else
+	    fprintf (parser->state.err_stream,
+		     dgettext(parser->state.root_argp->argp_domain,
+			      "%s: invalid option -- %c\n"),
+		     parser->state.name, c);
+
+	  *arg_ebadkey = 0;
+	  return EBADKEY;
+	}
+
+      if (!*parser->nextchar)
+	parser->nextchar = NULL;
+
+      if (option->arg)
+	{
+	  value = parser->nextchar;
+	  parser->nextchar = NULL;
+	      
+	  if (!value
+	      && !(option->flags & OPTION_ARG_OPTIONAL))
+	    /* We need an mandatory argument. */
+	    {
+	      if (parser->state.next == parser->state.argc)
+		/* Missing argument */
+		{
+		  /* 1003.2 specifies the format of this message.  */
+		  fprintf (parser->state.err_stream,
+			   dgettext(parser->state.root_argp->argp_domain,
+				    "%s: option requires an argument -- %c\n"),
+			   parser->state.name, c);
+
+		  *arg_ebadkey = 0;
+		  return EBADKEY;
+		}
+	      value = parser->state.argv[parser->state.next++];
+	    }
+	}
+      return group_parse(group, &parser->state,
+			 option->key, value);
+    }
+  else
+    /* Advance to the next ARGV-element.  */
+    {
+      if (parser->args_only)
+	{
+	  *arg_ebadkey = 1;
+	  if (parser->state.next >= parser->state.argc)
+	    /* We're done. */
+	    return EBADKEY;
+	  else
+	    return parser_parse_arg(parser,
+				    parser->state.argv[parser->state.next]);
+	}
+      
+      if (parser->state.next >= parser->state.argc)
+	/* Almost done. If there are non-options that we skipped
+	   previously, we should process them now. */
+	{
+	  *arg_ebadkey = 1;
+	  if (parser->first_nonopt != parser->last_nonopt)
+	    {
+	      exchange(parser);
+	      
+	      /* Start processing the arguments we skipped previously. */
+	      parser->state.next = parser->first_nonopt;
+	      
+	      parser->first_nonopt = parser->last_nonopt = 0;
+
+	      parser->args_only = 1;
+	      return 0;
+	    }
+	  else
+	    /* Indicate that we're really done. */
+	    return EBADKEY;
+	}
+      else
+	/* Look for options. */
+	{
+	  char *arg = parser->state.argv[parser->state.next];
+
+	  char *optstart;
+	  enum arg_type token = classify_arg(parser, arg, &optstart);
+	  
+	  switch (token)
+	    {
+	    case ARG_ARG:
+	      switch (parser->ordering)
+		{
+		case PERMUTE:
+		  if (parser->first_nonopt == parser->last_nonopt)
+		    /* Skipped sequence is empty; start a new one. */
+		    parser->first_nonopt = parser->last_nonopt = parser->state.next;
+
+		  else if (parser->last_nonopt != parser->state.next)
+		    /* We have a non-empty skipped sequence, and
+		       we're not at the end-point, so move it. */
+		    exchange(parser);
+
+		  assert(parser->last_nonopt == parser->state.next);
+		  
+		  /* Skip this argument for now. */
+		  parser->state.next++;
+		  parser->last_nonopt = parser->state.next; 
+		  
+		  return 0;
+
+		case REQUIRE_ORDER:
+		  /* Implicit quote before the first argument. */
+		   parser->args_only = 1;
+		   return 0;
+		   
+		case RETURN_IN_ORDER:
+		  *arg_ebadkey = 1;
+		  return parser_parse_arg(parser, arg);
+
+		default:
+		  abort();
+		}
+	    case ARG_QUOTE:
+	      /* Skip it, then exchange with any previous non-options. */
+	      parser->state.next++;
+	      assert (parser->last_nonopt != parser->state.next);
+
+	      if (parser->first_nonopt != parser->last_nonopt)
+		{
+		  exchange(parser);
+		  
+		  /* Start processing the skipped and the quoted
+		     arguments. */
+
+		  parser->state.quoted = parser->state.next = parser->first_nonopt;
+
+		  /* Also empty the skipped-list, to avoid confusion
+		     if the user resets the next pointer. */
+		  parser->first_nonopt = parser->last_nonopt = 0;
+		}
+	      else
+		parser->state.quoted = parser->state.next;
+
+	      parser->args_only = 1;	      
+	      return 0;
+
+	    case ARG_LONG_ONLY_OPTION:
+	    case ARG_LONG_OPTION:
+	      {
+		struct group *group;
+		const struct argp_option *option;
+		char *value;
+
+		parser->state.next++;
+		option = find_long_option(parser, optstart, &group);
+		
+		if (!option)
+		  {
+		    /* NOTE: This includes any "=something" in the output. */
+		    fprintf (parser->state.err_stream,
+			     dgettext(parser->state.root_argp->argp_domain,
+				      "%s: unrecognized option `%s'\n"),
+			     parser->state.name, arg);
+		    *arg_ebadkey = 0;
+		    return EBADKEY;
+		  }
+
+		value = strchr(optstart, '=');
+		if (value)
+		  value++;
+		
+		if (value && !option->arg)
+		  /* Unexpected argument. */
+		  {
+		    if (token == ARG_LONG_OPTION)
+		      /* --option */
+		      fprintf (parser->state.err_stream,
+			       dgettext(parser->state.root_argp->argp_domain,
+					"%s: option `--%s' doesn't allow an argument\n"),
+			       parser->state.name, option->name);
+		    else
+		      /* +option or -option */
+		      fprintf (parser->state.err_stream,
+			       dgettext(parser->state.root_argp->argp_domain,
+					"%s: option `%c%s' doesn't allow an argument\n"),
+			       parser->state.name, arg[0], option->name);
+
+		    *arg_ebadkey = 0;
+		    return EBADKEY;
+		  }
+		
+		if (option->arg && !value
+		    && !(option->flags & OPTION_ARG_OPTIONAL))
+		  /* We need an mandatory argument. */
+		  {
+		    if (parser->state.next == parser->state.argc)
+		      /* Missing argument */
+		      {
+			if (token == ARG_LONG_OPTION)
+			  /* --option */
+			  fprintf (parser->state.err_stream,
+				   dgettext(parser->state.root_argp->argp_domain,
+					    "%s: option `--%s' requires an argument\n"),
+				 parser->state.name, option->name);
+			else
+			  /* +option or -option */
+			  fprintf (parser->state.err_stream,
+				   dgettext(parser->state.root_argp->argp_domain,
+					    "%s: option `%c%s' requires an argument\n"),
+				   parser->state.name, arg[0], option->name);
+
+			*arg_ebadkey = 0;
+			return EBADKEY;
+		      }
+
+		    value = parser->state.argv[parser->state.next++];
+		  }
+		*arg_ebadkey = 0;
+		return group_parse(group, &parser->state,
+				   option->key, value);
+	      }
+	    case ARG_SHORT_OPTION:
+	      parser->state.next++;
+	      parser->nextchar = optstart;
+	      return 0;
+
+	    default:
+	      abort();
+	    }
+	}
+    }
+}
+
+/* Parse the options strings in ARGC & ARGV according to the argp in ARGP.
+   FLAGS is one of the ARGP_ flags above.  If END_INDEX is non-NULL, the
+   index in ARGV of the first unparsed option is returned in it.  If an
+   unknown option is present, EINVAL is returned; if some parser routine
+   returned a non-zero value, it is returned; otherwise 0 is returned.  */
+error_t
+__argp_parse (const struct argp *argp, int argc, char **argv, unsigned flags,
+	      int *end_index, void *input)
+{
+  error_t err;
+  struct parser parser;
+
+  /* If true, then err == EBADKEY is a result of a non-option argument failing
+     to be parsed (which in some cases isn't actually an error).  */
+  int arg_ebadkey = 0;
+
+  if (! (flags & ARGP_NO_HELP))
+    /* Add our own options.  */
+    {
+      struct argp_child *child = alloca (4 * sizeof (struct argp_child));
+      struct argp *top_argp = alloca (sizeof (struct argp));
+
+      /* TOP_ARGP has no options, it just serves to group the user & default
+	 argps.  */
+      memset (top_argp, 0, sizeof (*top_argp));
+      top_argp->children = child;
+
+      memset (child, 0, 4 * sizeof (struct argp_child));
+
+      if (argp)
+	(child++)->argp = argp;
+      (child++)->argp = &argp_default_argp;
+      if (argp_program_version || argp_program_version_hook)
+	(child++)->argp = &argp_version_argp;
+      child->argp = 0;
+
+      argp = top_argp;
+    }
+
+  /* Construct a parser for these arguments.  */
+  err = parser_init (&parser, argp, argc, argv, flags, input);
+
+  if (! err)
+    /* Parse! */
+    {
+      while (! err)
+	err = parser_parse_next (&parser, &arg_ebadkey);
+      err = parser_finalize (&parser, err, arg_ebadkey, end_index);
+    }
+
+  return err;
+}
+#ifdef weak_alias
+weak_alias (__argp_parse, argp_parse)
+#endif
+
+/* Return the input field for ARGP in the parser corresponding to STATE; used
+   by the help routines.  */
+void *
+__argp_input (const struct argp *argp, const struct argp_state *state)
+{
+  if (state)
+    {
+      struct group *group;
+      struct parser *parser = state->pstate;
+
+      for (group = parser->groups; group < parser->egroup; group++)
+	if (group->argp == argp)
+	  return group->input;
+    }
+
+  return 0;
+}
+#ifdef weak_alias
+weak_alias (__argp_input, _argp_input)
+#endif
+
+/* Defined here, in case a user is not inlining the definitions in
+ * argp.h */
+void
+__NTH(__argp_usage (__const struct argp_state *__state))
+{
+  __argp_state_help (__state, stderr, ARGP_HELP_STD_USAGE);
+}
+
+int
+__NTH(__option_is_short (__const struct argp_option *__opt))
+{
+  if (__opt->flags & OPTION_DOC)
+    return 0;
+  else
+    {
+      int __key = __opt->key;
+      /* FIXME: whether or not a particular key implies a short option
+       * ought not to be locale dependent. */
+      return __key > 0 && isprint (__key);
+    }
+}
+
+int
+__NTH(__option_is_end (__const struct argp_option *__opt))
+{
+  return !__opt->key && !__opt->name && !__opt->doc &&
!__opt->group;
+}
Index: argp-xinl.c
--- argp-xinl.c	(revision 0)
+++ argp-xinl.c	(revision 0)
@@ -0,0 +1,42 @@
+/* Real definitions for extern inline functions in argp.h
+   Copyright (C) 1997, 1998 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <features.h>
+
+#ifndef __USE_EXTERN_INLINES
+# define __USE_EXTERN_INLINES	1
+#endif
+#define ARGP_EI
+#undef __OPTIMIZE__
+#define __OPTIMIZE__
+#include "argp.h"
+
+/* Add weak aliases.  */
+#if _LIBC - 0 && defined (weak_alias)
+
+weak_alias (__argp_usage, argp_usage)
+weak_alias (__option_is_short, _option_is_short)
+weak_alias (__option_is_end, _option_is_end)
+
+#endif
Index: argp-test.c
--- argp-test.c	(revision 0)
+++ argp-test.c	(revision 0)
@@ -0,0 +1,254 @@
+/* Test program for argp argument parser
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <time.h>
+#include <string.h>
+#include <stdio.h>
+
+#include "argp.h"
+
+#if !HAVE_ASPRINTF
+#include <stdarg.h>
+
+static int
+asprintf (char **result, const char *format, ...)
+{
+  size_t size;
+  char *p;
+
+  for (size = 200, p = NULL;; size *= 2)
+  {
+    va_list args;
+    int written;
+    
+    p = realloc(p, size + 1);
+    if (!p)
+    {
+      fprintf(stderr, "Virtual memory exhausted.\n");
+      abort();
+    }
+
+    p[size] = '\0';
+    
+    va_start(args, format);
+    written = vsnprintf(p, size, format, args);
+    va_end(args);
+
+    if (written >= 0)
+    {
+      *result = p;
+      return written;
+    }
+  }
+}
+#endif /* !HAVE_ASPRINTF */
+
+const char *argp_program_version = "argp-test 1.0";
+
+struct argp_option sub_options[] =
+{
+  {"subopt1",       's',     0,  0, "Nested option 1", 0},
+  {"subopt2",       'S',     0,  0, "Nested option 2", 0},
+
+  { 0, 0, 0, 0, "Some more nested options:", 10},
+  {"subopt3",       'p',     0,  0, "Nested option 3", 0},
+
+  {"subopt4",       'q',     0,  0, "Nested option 4", 1},
+
+  {0, 0, 0, 0, 0, 0}
+};
+
+static const char sub_args_doc[] = "STRING...\n-";
+static const char sub_doc[] = "\vThis is the doc string from the
sub-arg-parser.";
+
+static error_t
+sub_parse_opt (int key, char *arg, struct argp_state *state UNUSED)
+{
+  switch (key)
+    {
+    case ARGP_KEY_NO_ARGS:
+      printf ("NO SUB ARGS\n");
+      break;
+    case ARGP_KEY_ARG:
+      printf ("SUB ARG: %s\n", arg);
+      break;
+
+    case 's' : case 'S': case 'p': case 'q':
+      printf ("SUB KEY %c\n", key);
+      break;
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+static char *
+sub_help_filter (int key, const char *text, void *input UNUSED)
+{
+  if (key == ARGP_KEY_HELP_EXTRA)
+    return strdup ("This is some extra text from the sub parser (note that it \
+is preceded by a blank line).");
+  else
+    return (char *)text;
+}
+
+static struct argp sub_argp = {
+  sub_options, sub_parse_opt, sub_args_doc, sub_doc, 0, sub_help_filter, 0
+};
+
+/* Structure used to communicate with the parsing functions.  */
+struct params
+{
+  unsigned foonly;		/* Value parsed for foonly.  */
+  unsigned foonly_default;	/* Default value for it.  */
+};
+
+#define OPT_PGRP 1
+#define OPT_SESS 2
+
+struct argp_option options[] =
+{
+  {"pid",       'p',     "PID", 0, "List the process
PID", 0},
+  {"pgrp",      OPT_PGRP,"PGRP",0, "List processes in the
process group PGRP", 0},
+  {"no-parent", 'P',	 0,     0, "Include processes without
parents", 0},
+  {0,           'x',     0,     OPTION_ALIAS, NULL, 0},
+  {"all-fields",'Q',     0,     0, "Don't elide unusable
fields (normally"
+				   " if there's some reason ps can't"
+				   " print a field for any process, it's"
+				   " removed from the output entirely)", 0},
+  {"reverse",   'r',    0,      0, "Reverse the order of any
sort", 0},
+  {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS, NULL, 0},
+  {"session",  OPT_SESS,"SID",  OPTION_ARG_OPTIONAL,
+				   "Add the processes from the session"
+				   " SID (which defaults to the sid of"
+				   " the current process)", 0},
+
+  {0,0,0,0, "Here are some more options:", 0},
+  {"foonly", 'f', "ZOT", OPTION_ARG_OPTIONAL, "Glork a
foonly", 0},
+  {"zaza", 'z', 0, 0, "Snit a zar", 0},
+
+  {0, 0, 0, 0, 0, 0}
+};
+
+static const char args_doc[] = "STRING";
+static const char doc[] = "Test program for argp."
+ "\vThis doc string comes after the options."
+ "\nHey!  Some manual formatting!"
+ "\nThe current time is: %s";
+
+static void
+popt (int key, char *arg)
+{
+  char buf[10];
+  if (isprint (key))
+    sprintf (buf, "%c", key);
+  else
+    sprintf (buf, "%d", key);
+  if (arg)
+    printf ("KEY %s: %s\n", buf, arg);
+  else
+    printf ("KEY %s\n", buf);
+}
+
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  struct params *params = state->input;
+
+  switch (key)
+    {
+    case ARGP_KEY_NO_ARGS:
+      printf ("NO ARGS\n");
+      break;
+
+    case ARGP_KEY_ARG:
+      if (state->arg_num > 0)
+	return ARGP_ERR_UNKNOWN; /* Leave it for the sub-arg parser.  */
+      printf ("ARG: %s\n", arg);
+      break;
+
+    case 'f':
+      if (arg)
+	params->foonly = atoi (arg);
+      else
+	params->foonly = params->foonly_default;
+      popt (key, arg);
+      break;
+
+    case 'p': case 'P': case OPT_PGRP: case 'x': case
'Q':
+    case 'r': case OPT_SESS: case 'z':
+      popt (key, arg);
+      break;
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+static char *
+help_filter (int key, const char *text, void *input)
+{
+  char *new_text;
+  struct params *params = input;
+
+  if (key == ARGP_KEY_HELP_POST_DOC && text)
+    {
+      time_t now = time (0);
+      asprintf (&new_text, text, ctime (&now));
+    }
+  else if (key == 'f')
+    /* Show the default for the --foonly option.  */
+    asprintf (&new_text, "%s (ZOT defaults to %x)",
+	      text, params->foonly_default);
+  else
+    new_text = (char *)text;
+
+  return new_text;
+}
+
+static struct argp_child argp_children[] = {
+  { &sub_argp, 0, 0, 0 }, { 0, 0, 0, 0 }
+};
+
+static struct argp argp = {
+  options, parse_opt, args_doc, doc, argp_children, help_filter, 0
+};
+
+int
+main (int argc, char **argv)
+{
+  struct params params;
+  params.foonly = 0;
+  params.foonly_default = random ();
+  argp_parse (&argp, argc, argv, 0, 0, &params);
+  printf ("After parsing: foonly = %x\n", params.foonly);
+  return 0;
+}
Index: argp-fs-xinl.c
--- argp-fs-xinl.c	(revision 0)
+++ argp-fs-xinl.c	(revision 0)
@@ -0,0 +1,41 @@
+/* Real definitions for extern inline functions in argp-fmtstream.h
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#define ARGP_FS_EI
+#undef __OPTIMIZE__
+#define __OPTIMIZE__
+#include "argp-fmtstream.h"
+
+/* Add weak aliases.  */
+#if _LIBC - 0 && !defined (ARGP_FMTSTREAM_USE_LINEWRAP) && defined
(weak_alias)
+
+weak_alias (__argp_fmtstream_putc, argp_fmtstream_putc)
+weak_alias (__argp_fmtstream_puts, argp_fmtstream_puts)
+weak_alias (__argp_fmtstream_write, argp_fmtstream_write)
+weak_alias (__argp_fmtstream_set_lmargin, argp_fmtstream_set_lmargin)
+weak_alias (__argp_fmtstream_set_rmargin, argp_fmtstream_set_rmargin)
+weak_alias (__argp_fmtstream_set_wmargin, argp_fmtstream_set_wmargin)
+weak_alias (__argp_fmtstream_point, argp_fmtstream_point)
+
+#endif
Index: testsuite/ex3.c
--- testsuite/ex3.c	(revision 0)
+++ testsuite/ex3.c	(revision 0)
@@ -0,0 +1,154 @@
+/* Argp example #3 - a program with options and arguments using argp */
+
+/* This program uses the same features as example 2, and uses options and
+   arguments.
+
+   We now use the first four fields in ARGP, so here's a description of them:
+     OPTIONS  - A pointer to a vector of struct argp_option (see below)
+     PARSER   - A function to parse a single option, called by argp
+     ARGS_DOC - A string describing how the non-option arguments should look
+     DOC      - A descriptive string about this program; if it contains a
+                 vertical tab character (\v), the part after it will be
+                 printed *following* the options
+
+   The function PARSER takes the following arguments:
+     KEY  - An integer specifying which option this is (taken
+             from the KEY field in each struct argp_option), or
+             a special key specifying something else; the only
+             special keys we use here are ARGP_KEY_ARG, meaning
+             a non-option argument, and ARGP_KEY_END, meaning
+             that all arguments have been parsed
+     ARG  - For an option KEY, the string value of its
+             argument, or NULL if it has none
+     STATE- A pointer to a struct argp_state, containing
+             various useful information about the parsing state; used here
+             are the INPUT field, which reflects the INPUT argument to
+             argp_parse, and the ARG_NUM field, which is the number of the
+             current non-option argument being parsed
+   It should return either 0, meaning success, ARGP_ERR_UNKNOWN, meaning the
+   given KEY wasn't recognized, or an errno value indicating some other
+   error.
+
+   Note that in this example, main uses a structure to communicate with the
+   parse_opt function, a pointer to which it passes in the INPUT argument to
+   argp_parse.  Of course, it's also possible to use global variables
+   instead, but this is somewhat more flexible.
+
+   The OPTIONS field contains a pointer to a vector of struct argp_option's;
+   that structure has the following fields (if you assign your option
+   structures using array initialization like this example, unspecified
+   fields will be defaulted to 0, and need not be specified):
+     NAME   - The name of this option's long option (may be zero)
+     KEY    - The KEY to pass to the PARSER function when parsing this option,
+               *and* the name of this option's short option, if it is a
+               printable ascii character
+     ARG    - The name of this option's argument, if any
+     FLAGS  - Flags describing this option; some of them are:
+                 OPTION_ARG_OPTIONAL - The argument to this option is optional
+                 OPTION_ALIAS        - This option is an alias for the
+                                        previous option
+                 OPTION_HIDDEN       - Don't show this option in -help output
+     DOC    - A documentation string for this option, shown in -help output
+
+   An options vector should be terminated by an option with all fields zero. */
+
+#include <argp.h>
+
+#include <stdlib.h>
+
+const char *argp_program_version =
+  "argp-ex3 1.0";
+const char *argp_program_bug_address =
+  &quot;&lt;bug-gnu-utils(a)gnu.org&gt;&quot;nu.org>";
+
+/* Program documentation. */
+static char doc[] =
+  "Argp example #3 -- a program with options and arguments using argp";
+
+/* A description of the arguments we accept. */
+static char args_doc[] = "ARG1 ARG2";
+
+/* The options we understand. */
+static struct argp_option options[] = {
+  {"verbose",  'v', 0,      0,  "Produce verbose output",
0},
+  {"quiet",    'q', 0,      0,  "Don't produce any
output", 0},
+  {"silent",   's', 0,      OPTION_ALIAS, 0, 0},
+  {"output",   'o', "FILE", 0,
+   "Output to FILE instead of standard output", 0},
+  {0, 0, 0, 0, 0, 0}
+};
+
+/* Used by `main' to communicate with `parse_opt'. */
+struct arguments
+{
+  char *args[2];                /* ARG1 & ARG2 */
+  int silent, verbose;
+  char *output_file;
+};
+
+/* Parse a single option. */
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  /* Get the INPUT argument from `argp_parse', which we
+     know is a pointer to our arguments structure. */
+  struct arguments *arguments = state->input;
+
+  switch (key)
+    {
+    case 'q': case 's':
+      arguments->silent = 1;
+      break;
+    case 'v':
+      arguments->verbose = 1;
+      break;
+    case 'o':
+      arguments->output_file = arg;
+      break;
+
+    case ARGP_KEY_ARG:
+      if (state->arg_num >= 2)
+        /* Too many arguments. */
+        argp_usage (state);
+
+      arguments->args[state->arg_num] = arg;
+
+      break;
+
+    case ARGP_KEY_END:
+      if (state->arg_num < 2)
+        /* Not enough arguments. */
+        argp_usage (state);
+      break;
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+/* Our argp parser. */
+static struct argp argp = { options, parse_opt, args_doc, doc, 0, 0, 0 };
+
+int main (int argc, char **argv)
+{
+  struct arguments arguments;
+
+  /* Default values. */
+  arguments.silent = 0;
+  arguments.verbose = 0;
+  arguments.output_file = "-";
+
+  /* Parse our arguments; every option seen by `parse_opt' will
+     be reflected in `arguments'. */
+  argp_parse (&argp, argc, argv, 0, 0, &arguments);
+
+  printf ("ARG1 = %s\nARG2 = %s\nOUTPUT_FILE = %s\n"
+          "VERBOSE = %s\nSILENT = %s\n",
+          arguments.args[0], arguments.args[1],
+          arguments.output_file,
+          arguments.verbose ? "yes" : "no",
+          arguments.silent ? "yes" : "no");
+
+  exit (0);
+}
Index: testsuite/ex4.c
--- testsuite/ex4.c	(revision 0)
+++ testsuite/ex4.c	(revision 0)
@@ -0,0 +1,172 @@
+/* Argp example #4 - a program with somewhat more complicated options */
+
+/* This program uses the same features as example 3, but has more
+   options, and somewhat more structure in the -help output.  It
+   also shows how you can `steal' the remainder of the input
+   arguments past a certain point, for programs that accept a
+   list of items.  It also shows the special argp KEY value
+   ARGP_KEY_NO_ARGS, which is only given if no non-option
+   arguments were supplied to the program.
+
+   For structuring the help output, two features are used,
+   *headers* which are entries in the options vector with the
+   first four fields being zero, and a two part documentation
+   string (in the variable DOC), which allows documentation both
+   before and after the options; the two parts of DOC are
+   separated by a vertical-tab character ('\v', or '\013').  By
+   convention, the documentation before the options is just a
+   short string saying what the program does, and that afterwards
+   is longer, describing the behavior in more detail.  All
+   documentation strings are automatically filled for output,
+   although newlines may be included to force a line break at a
+   particular point.  All documentation strings are also passed to
+   the `gettext' function, for possible translation into the
+   current locale. */
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <argp.h>
+
+const char *argp_program_version =
+  "argp-ex4 1.0";
+const char *argp_program_bug_address =
+  &quot;&lt;bug-gnu-utils(a)prep.ai.mit.edu&gt;&quot;it.edu>";
+
+/* Program documentation. */
+static char doc[] =
+  "Argp example #4 -- a program with somewhat more complicated\
+options\
+\vThis part of the documentation comes *after* the options;\
+ note that the text is automatically filled, but it's possible\
+ to force a line-break, e.g.\n<-- here.";
+
+/* A description of the arguments we accept. */
+static char args_doc[] = "ARG1 [STRING...]";
+
+/* Keys for options without short-options. */
+#define OPT_ABORT  1            /* -abort */
+
+/* The options we understand. */
+static struct argp_option options[] = {
+  {"verbose",  'v', 0,       0, "Produce verbose output",
0},
+  {"quiet",    'q', 0,       0, "Don't produce any
output", 0},
+  {"silent",   's', 0,       OPTION_ALIAS, 0, 0},
+  {"output",   'o', "FILE",  0,
+   "Output to FILE instead of standard output", 0},
+
+  {0,0,0,0, "The following options should be grouped together:", 0},
+  {"repeat",   'r', "COUNT", OPTION_ARG_OPTIONAL,
+   "Repeat the output COUNT (default 10) times", 0},
+  {"abort",    OPT_ABORT, 0, 0, "Abort before showing any output",
0},
+
+  {0, 0, 0, 0, 0, 0}
+};
+
+/* Used by `main' to communicate with `parse_opt'. */
+struct arguments
+{
+  char *arg1;                   /* ARG1 */
+  char **strings;               /* [STRING...] */
+  int silent, verbose, abort;   /* `-s', `-v', `--abort' */
+  char *output_file;            /* FILE arg to `--output' */
+  int repeat_count;             /* COUNT arg to `--repeat' */
+};
+
+/* Parse a single option. */
+static error_t
+parse_opt (int key, char *arg, struct argp_state *state)
+{
+  /* Get the `input' argument from `argp_parse', which we
+     know is a pointer to our arguments structure. */
+  struct arguments *arguments = state->input;
+
+  switch (key)
+    {
+    case 'q': case 's':
+      arguments->silent = 1;
+      break;
+    case 'v':
+      arguments->verbose = 1;
+      break;
+    case 'o':
+      arguments->output_file = arg;
+      break;
+    case 'r':
+      arguments->repeat_count = arg ? atoi (arg) : 10;
+      break;
+    case OPT_ABORT:
+      arguments->abort = 1;
+      break;
+
+    case ARGP_KEY_NO_ARGS:
+      argp_usage (state);
+
+    case ARGP_KEY_ARG:
+      /* Here we know that `state->arg_num == 0', since we
+         force argument parsing to end before any more arguments can
+         get here. */
+      arguments->arg1 = arg;
+
+      /* Now we consume all the rest of the arguments.
+         `state->next' is the index in `state->argv' of the
+         next argument to be parsed, which is the first STRING
+         we're interested in, so we can just use
+         `&state->argv[state->next]' as the value for
+         arguments->strings.
+
+         _In addition_, by setting `state->next' to the end
+         of the arguments, we can force argp to stop parsing here and
+         return. */
+      arguments->strings = &state->argv[state->next];
+      state->next = state->argc;
+
+      break;
+
+    default:
+      return ARGP_ERR_UNKNOWN;
+    }
+  return 0;
+}
+
+/* Our argp parser. */
+static struct argp argp = { options, parse_opt, args_doc, doc, 0, 0, 0};
+
+int main (int argc, char **argv)
+{
+  int i, j;
+  struct arguments arguments;
+
+  /* Default values. */
+  arguments.silent = 0;
+  arguments.verbose = 0;
+  arguments.output_file = "-";
+  arguments.repeat_count = 1;
+  arguments.abort = 0;
+
+  /* Parse our arguments; every option seen by `parse_opt' will be
+     reflected in `arguments'. */
+  argp_parse (&argp, argc, argv, 0, 0, &arguments);
+
+  if (arguments.abort)
+    {
+      /* The glibc example used error (10, 0, "ABORTED"), but that's
+	 not portable. */
+      fprintf(stderr, "ex4: ABORTED\n");
+      exit(10);
+    }
+
+  for (i = 0; i < arguments.repeat_count; i++)
+    {
+      printf ("ARG1 = %s\n", arguments.arg1);
+      printf ("STRINGS = ");
+      for (j = 0; arguments.strings[j]; j++)
+        printf (j == 0 ? "%s" : ", %s", arguments.strings[j]);
+      printf ("\n");
+      printf ("OUTPUT_FILE = %s\nVERBOSE = %s\nSILENT = %s\n",
+              arguments.output_file,
+              arguments.verbose ? "yes" : "no",
+              arguments.silent ? "yes" : "no");
+    }
+
+  exit (0);
+}
Index: testsuite/run-tests
--- testsuite/run-tests	(revision 0)
+++ testsuite/run-tests	(revision 0)
@@ -0,0 +1,69 @@
+#! /bin/sh
+
+failed=0
+all=0
+
+if [ -z "$srcdir" ] ; then
+  srcdir=`pwd`
+fi
+
+export srcdir
+
+find_program () {
+  if [ -x "$1" ] ; then
+    echo "./$1"
+  else
+    echo "$srcdir/$1"
+  fi
+}
+
+env_program () {
+  if [ -x "$1" ] ; then
+    if "$1"; then : ; else
+      echo FAIL: $1
+      exit 1
+    fi
+  fi
+}
+
+test_program () {
+  testname=`basename "$1" -test`
+  "$1"
+  case "$?" in
+      0)
+    	echo PASS: $testname
+	all=`expr $all + 1`
+	;;
+      77)
+      	echo SKIP: $testname
+      ;;
+      *)
+    	echo FAIL: $testname
+	failed=`expr $failed + 1`
+	all=`expr $all + 1`
+	;;
+  esac
+}
+
+env_program `find_program setup-env`
+
+if [ $# -eq 0 ] ; then
+  for f in *-test; do test_program "./$f"; done
+else
+  for f in "$@" ; do test_program `find_program "$f"`; done
+fi
+
+if [ $failed -eq 0 ] ; then
+  banner="All $all tests passed"
+else
+  banner="$failed of $all tests failed"
+fi
+dashes=`echo "$banner" | sed s/./=/g`
+echo "$dashes"
+echo "$banner"
+echo "$dashes"
+
+env_program `find_program teardown-env`
+
+[ "$failed" -eq 0 ]
+

Property changes on: testsuite/run-tests
___________________________________________________________________
Name: svn:executable
   + *

Index: testsuite/Makefile.am
--- testsuite/Makefile.am	(revision 0)
+++ testsuite/Makefile.am	(revision 0)
@@ -0,0 +1,16 @@
+TS_SH = ex1-test permute-test
+TS_PROGS =
+
+TS_ALL = $(TS_PROGS) $(TS_SH)
+
+AM_CPPFLAGS = -I$(top_srcdir)
+check_PROGRAMS = $(TS_PROGS) ex1 ex3 ex4
+
+LDADD = ../libargp.la
+
+EXTRA_DIST = $(TS_SH) run-tests
+CLEANFILES = test.out
+
+.PHONY: check
+check: $(TS_ALL) $(srcdir)/run-tests
+	srcdir="$(srcdir)" $(srcdir)/run-tests $(TS_ALL)
Index: testsuite/ex1-test
--- testsuite/ex1-test	(revision 0)
+++ testsuite/ex1-test	(revision 0)
@@ -0,0 +1,18 @@
+#! /bin/sh
+
+# Success with no args
+./ex1 || exit 1
+
+# Fail with args
+if ./ex1 foo 2>/dev/null ; then exit 1 ; fi
+
+# Respond to --help
+./ex1 --help >/dev/null || exit 1
+
+# Not using ARGP_LONG_ONLY
+if ./ex1 -help 2>/dev/null ; then exit 1 ; fi
+
+(./ex1 --help | grep Usage: >/dev/null ) || exit 1
+
+exit 0
+

Property changes on: testsuite/ex1-test
___________________________________________________________________
Name: svn:executable
   + *

Index: testsuite/ex1.c
--- testsuite/ex1.c	(revision 0)
+++ testsuite/ex1.c	(revision 0)
@@ -0,0 +1,16 @@
+/* Argp example #1 - a minimal program using argp */
+
+/* This is (probably) the smallest possible program that
+   uses argp.  It won't do much except give an error
+   messages and exit when there are any arguments, and print
+   a (rather pointless) messages for -help. */
+
+#include <argp.h>
+
+#include <stdlib.h>
+
+int main (int argc, char **argv)
+{
+  argp_parse (0, argc, argv, 0, 0, 0);
+  exit (0);
+}
Index: testsuite/permute-test
--- testsuite/permute-test	(revision 0)
+++ testsuite/permute-test	(revision 0)
@@ -0,0 +1,24 @@
+#! /bin/sh
+
+# Test the somewhat hairy permuting of arguments.
+
+cat >test.out <<EOF
+ARG1 = foo
+ARG2 = bar
+OUTPUT_FILE = -
+VERBOSE = yes
+SILENT = no
+EOF
+
+die () {
+    echo "$@" 1>&2
+    exit 1
+}
+
+for args in "-v foo bar" \
+            "-v -v foo bar" "-v foo -v bar" "-v foo bar -v"
\
+            "foo -v bar -v" "foo bar -v -v" "foo -v -v bar"
; do
+  ./ex3 $args | diff - test.out >/dev/null || die "Test failed with args
$args"
+done
+
+exit 0

Property changes on: testsuite/permute-test
___________________________________________________________________
Name: svn:executable
   + *

Index: argp-ba.c
--- argp-ba.c	(revision 0)
+++ argp-ba.c	(revision 0)
@@ -0,0 +1,26 @@
+/* Default definition for ARGP_PROGRAM_BUG_ADDRESS.
+   Copyright (C) 1996, 1997, 1999, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* If set by the user program, it should point to string that is the
+   bug-reporting address for the program.  It will be printed by argp_help if
+   the ARGP_HELP_BUG_ADDR flag is set (as it is by various standard help
+   messages), embedded in a sentence that says something like `Report bugs to
+   ADDR.'.  */
+const char *argp_program_bug_address = 0;
Index: mempcpy.c
--- mempcpy.c	(revision 0)
+++ mempcpy.c	(revision 0)
@@ -0,0 +1,18 @@
+/* strndup.c
+ *
+ */
+
+/* Written by Niels Möller &lt;nisse(a)lysator.liu.se&gt;
+ *
+ * This file is hereby placed in the public domain.
+ */
+
+#include <string.h>
+
+void *
+mempcpy (void *to, const void *from, size_t size)
+{
+  memcpy(to, from, size);
+  return (char *) to + size;
+}
+
Index: vcs/local.rb
--- vcs/local.rb	(revision 0)
+++ vcs/local.rb	(revision 0)
@@ -0,0 +1,16 @@
+class Vcs
+
+  # See http://rubyforge.org/projects/vcs
+  # and http://vcs.rubyforge.org
+
+  protocol_version '0.1'
+
+  def local_commit! ( *args )
+    common_commit!("2: <%= title %>", *args) do |subject|
+      mail!(:to => %w[projects(a)lrde.epita.fr], :subject => subject)
+    end
+  end
+  alias_command :tcci, :local_commit
+  default_commit :local_commit
+
+end # class Vcs
Index: argp-pv.c
--- argp-pv.c	(revision 0)
+++ argp-pv.c	(revision 0)
@@ -0,0 +1,25 @@
+/* Default definition for ARGP_PROGRAM_VERSION.
+   Copyright (C) 1996, 1997, 1999, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* If set by the user program to a non-zero value, then a default option
+   --version is added (unless the ARGP_NO_HELP flag is used), which will
+   print this this string followed by a newline and exit (unless the
+   ARGP_NO_EXIT flag is used).  Overridden by ARGP_PROGRAM_VERSION_HOOK.  */
+const char *argp_program_version = 0;
Index: argp-eexst.c
--- argp-eexst.c	(revision 0)
+++ argp-eexst.c	(revision 0)
@@ -0,0 +1,32 @@
+/* Default definition for ARGP_ERR_EXIT_STATUS
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <sysexits.h>
+
+#include "argp.h"
+
+/* The exit status that argp will use when exiting due to a parsing error.
+   If not defined or set by the user program, this defaults to EX_USAGE from
+   <sysexits.h>.  */
+error_t argp_err_exit_status = EX_USAGE;
Index: argp-help.c
--- argp-help.c	(revision 0)
+++ argp-help.c	(revision 0)
@@ -0,0 +1,1855 @@
+/* Hierarchial argument parsing help output
+   Copyright (C) 1995,96,97,98,99,2000, 2003 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifndef _GNU_SOURCE
+# define _GNU_SOURCE	1
+#endif
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+/* AIX requires this to be the first thing in the file.  */
+#ifndef __GNUC__
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#endif
+
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <assert.h>
+#include <stdarg.h>
+#include <ctype.h>
+/* Does any system still need malloc.h? If so, we'd need a configure
+   test. */
+
+#ifndef _
+/* This is for other GNU distributions with internationalized messages.  */
+# if defined HAVE_LIBINTL_H || defined _LIBC
+#  include <libintl.h>
+#  ifdef _LIBC
+#   undef dgettext
+#   define dgettext(domain, msgid) __dcgettext (domain, msgid, LC_MESSAGES)
+#  endif
+# else
+#  define dgettext(domain, msgid) (msgid)
+# endif
+#endif
+
+#include "argp.h"
+#include "argp-fmtstream.h"
+#include "argp-namefrob.h"
+
+
+#ifndef _LIBC
+# ifndef __strchrnul
+#  define __strchrnul strchrnul
+# endif
+# ifndef __mempcpy
+#  define __mempcpy mempcpy
+# endif
+/* We need to use a different name, as __strndup is likely a macro. */
+# define STRNDUP strndup
+# if HAVE_STRERROR
+#  define STRERROR strerror
+# else
+#  define STRERROR(x) (sys_errlist[x])
+# endif
+#else /* _LIBC */
+# define FLOCKFILE __flockfile
+# define FUNLOCKFILE __funlockfile
+# define STRNDUP __strndup
+# define STRERROR strerror
+#endif
+
+#if !_LIBC
+# if !HAVE_STRNDUP
+char *strndup (const char *s, size_t size);
+# endif /* !HAVE_STRNDUP */
+
+# if !HAVE_MEMPCPY
+void *mempcpy (void *to, const void *from, size_t size);
+# endif /* !HAVE_MEMPCPY */
+
+# if !HAVE_STRCHRNUL
+char *strchrnul(const char *s, int c);
+# endif /* !HAVE_STRCHRNUL */
+
+#endif /* !_LIBC */
+
+
+/* User-selectable (using an environment variable) formatting parameters.
+
+   These may be specified in an environment variable called `ARGP_HELP_FMT',
+   with a contents like:  VAR1=VAL1,VAR2=VAL2,BOOLVAR2,no-BOOLVAR2
+   Where VALn must be a positive integer.  The list of variables is in the
+   UPARAM_NAMES vector, below.  */
+
+/* Default parameters.  */
+#define DUP_ARGS      0		/* True if option argument can be duplicated. */
+#define DUP_ARGS_NOTE 1		/* True to print a note about duplicate args. */
+#define SHORT_OPT_COL 2		/* column in which short options start */
+#define LONG_OPT_COL  6		/* column in which long options start */
+#define DOC_OPT_COL   2		/* column in which doc options start */
+#define OPT_DOC_COL  29		/* column in which option text starts */
+#define HEADER_COL    1		/* column in which group headers are printed */
+#define USAGE_INDENT 12		/* indentation of wrapped usage lines */
+#define RMARGIN      79		/* right margin used for wrapping */
+
+/* User-selectable (using an environment variable) formatting parameters.
+   They must all be of type `int' for the parsing code to work.  */
+struct uparams
+{
+  /* If true, arguments for an option are shown with both short and long
+     options, even when a given option has both, e.g. `-x ARG, --longx=ARG'.
+     If false, then if an option has both, the argument is only shown with
+     the long one, e.g., `-x, --longx=ARG', and a message indicating that
+     this really means both is printed below the options.  */
+  int dup_args;
+
+  /* This is true if when DUP_ARGS is false, and some duplicate arguments have
+     been suppressed, an explanatory message should be printed.  */
+  int dup_args_note;
+
+  /* Various output columns.  */
+  int short_opt_col;
+  int long_opt_col;
+  int doc_opt_col;
+  int opt_doc_col;
+  int header_col;
+  int usage_indent;
+  int rmargin;
+
+  int valid;			/* True when the values in here are valid.  */
+};
+
+/* This is a global variable, as user options are only ever read once.  */
+static struct uparams uparams = {
+  DUP_ARGS, DUP_ARGS_NOTE,
+  SHORT_OPT_COL, LONG_OPT_COL, DOC_OPT_COL, OPT_DOC_COL, HEADER_COL,
+  USAGE_INDENT, RMARGIN,
+  0
+};
+
+/* A particular uparam, and what the user name is.  */
+struct uparam_name
+{
+  const char *name;		/* User name.  */
+  int is_bool;			/* Whether it's `boolean'.  */
+  size_t uparams_offs;		/* Location of the (int) field in UPARAMS.  */
+};
+
+/* The name-field mappings we know about.  */
+static const struct uparam_name uparam_names[] =
+{
+  { "dup-args",       1, offsetof (struct uparams, dup_args) },
+  { "dup-args-note",  1, offsetof (struct uparams, dup_args_note) },
+  { "short-opt-col",  0, offsetof (struct uparams, short_opt_col) },
+  { "long-opt-col",   0, offsetof (struct uparams, long_opt_col) },
+  { "doc-opt-col",    0, offsetof (struct uparams, doc_opt_col) },
+  { "opt-doc-col",    0, offsetof (struct uparams, opt_doc_col) },
+  { "header-col",     0, offsetof (struct uparams, header_col) },
+  { "usage-indent",   0, offsetof (struct uparams, usage_indent) },
+  { "rmargin",        0, offsetof (struct uparams, rmargin) },
+  { 0, 0, 0 }
+};
+
+/* Read user options from the environment, and fill in UPARAMS appropiately.  */
+static void
+fill_in_uparams (const struct argp_state *state)
+{
+  /* FIXME: Can we get away without an explicit cast? */
+  const unsigned char *var = (unsigned char *) getenv ("ARGP_HELP_FMT");
+
+#define SKIPWS(p) do { while (isspace (*p)) p++; } while (0);
+
+  if (var)
+    /* Parse var. */
+    while (*var)
+      {
+	SKIPWS (var);
+
+	if (isalpha (*var))
+	  {
+	    size_t var_len;
+	    const struct uparam_name *un;
+	    int unspec = 0, val = 0;
+	    const unsigned char *arg = var;
+
+	    while (isalnum (*arg) || *arg == '-' || *arg == '_')
+	      arg++;
+	    var_len = arg - var;
+
+	    SKIPWS (arg);
+
+	    if (*arg == '\0' || *arg == ',')
+	      unspec = 1;
+	    else if (*arg == '=')
+	      {
+		arg++;
+		SKIPWS (arg);
+	      }
+
+	    if (unspec)
+	      {
+		if (var[0] == 'n' && var[1] == 'o' && var[2] ==
'-')
+		  {
+		    val = 0;
+		    var += 3;
+		    var_len -= 3;
+		  }
+		else
+		  val = 1;
+	      }
+	    else if (isdigit (*arg))
+	      {
+		val = atoi (arg);
+		while (isdigit (*arg))
+		  arg++;
+		SKIPWS (arg);
+	      }
+
+	    for (un = uparam_names; un->name; un++)
+	      if (strlen (un->name) == var_len
+		  && strncmp (var, un->name, var_len) == 0)
+		{
+		  if (unspec && !un->is_bool)
+		    __argp_failure (state, 0, 0,
+				    dgettext (state->root_argp->argp_domain, "\
+%.*s: ARGP_HELP_FMT parameter requires a value"),
+				    (int) var_len, var);
+		  else
+		    *(int *)((char *)&uparams + un->uparams_offs) = val;
+		  break;
+		}
+	    if (! un->name)
+	      __argp_failure (state, 0, 0,
+			      dgettext (state->root_argp->argp_domain, "\
+%.*s: Unknown ARGP_HELP_FMT parameter"),
+			      (int) var_len, var);
+
+	    var = arg;
+	    if (*var == ',')
+	      var++;
+	  }
+	else if (*var)
+	  {
+	    __argp_failure (state, 0, 0,
+			    dgettext (state->root_argp->argp_domain,
+				      "Garbage in ARGP_HELP_FMT: %s"), var);
+	    break;
+	  }
+      }
+}
+
+/* Returns true if OPT hasn't been marked invisible.  Visibility only affects
+   whether OPT is displayed or used in sorting, not option shadowing.  */
+#define ovisible(opt) (! ((opt)->flags & OPTION_HIDDEN))
+
+/* Returns true if OPT is an alias for an earlier option.  */
+#define oalias(opt) ((opt)->flags & OPTION_ALIAS)
+
+/* Returns true if OPT is an documentation-only entry.  */
+#define odoc(opt) ((opt)->flags & OPTION_DOC)
+
+/* Returns true if OPT is the end-of-list marker for a list of options.  */
+#define oend(opt) __option_is_end (opt)
+
+/* Returns true if OPT has a short option.  */
+#define oshort(opt) __option_is_short (opt)
+
+/*
+   The help format for a particular option is like:
+
+     -xARG, -yARG, --long1=ARG, --long2=ARG        Documentation...
+
+   Where ARG will be omitted if there's no argument, for this option, or
+   will be surrounded by "[" and "]" appropiately if the argument is
+   optional.  The documentation string is word-wrapped appropiately, and if
+   the list of options is long enough, it will be started on a separate line.
+   If there are no short options for a given option, the first long option is
+   indented slighly in a way that's supposed to make most long options appear
+   to be in a separate column.
+
+   For example, the following output (from ps):
+
+     -p PID, --pid=PID          List the process PID
+	 --pgrp=PGRP            List processes in the process group PGRP
+     -P, -x, --no-parent        Include processes without parents
+     -Q, --all-fields           Don't elide unusable fields (normally if there's
+				some reason ps can't print a field for any
+				process, it's removed from the output entirely)
+     -r, --reverse, --gratuitously-long-reverse-option
+				Reverse the order of any sort
+	 --session[=SID]        Add the processes from the session SID (which
+				defaults to the sid of the current process)
+
+    Here are some more options:
+     -f ZOT, --foonly=ZOT       Glork a foonly
+     -z, --zaza                 Snit a zar
+
+     -?, --help                 Give this help list
+	 --usage                Give a short usage message
+     -V, --version              Print program version
+
+   The struct argp_option array for the above could look like:
+
+   {
+     {"pid",       'p',      "PID",  0, "List the
process PID"},
+     {"pgrp",      OPT_PGRP, "PGRP", 0, "List processes in the
process group PGRP"},
+     {"no-parent", 'P',	      0,     0, "Include processes without
parents"},
+     {0,           'x',       0,     OPTION_ALIAS},
+     {"all-fields",'Q',       0,     0, "Don't elide unusable
fields (normally"
+                                        " if there's some reason ps
can't"
+					" print a field for any process, it's"
+                                        " removed from the output entirely)"
},
+     {"reverse",   'r',       0,     0, "Reverse the order of any
sort"},
+     {"gratuitously-long-reverse-option", 0, 0, OPTION_ALIAS},
+     {"session",   OPT_SESS,  "SID", OPTION_ARG_OPTIONAL,
+                                        "Add the processes from the session"
+					" SID (which defaults to the sid of"
+					" the current process)" },
+
+     {0,0,0,0, "Here are some more options:"},
+     {"foonly", 'f', "ZOT", 0, "Glork a foonly"},
+     {"zaza", 'z', 0, 0, "Snit a zar"},
+
+     {0}
+   }
+
+   Note that the last three options are automatically supplied by argp_parse,
+   unless you tell it not to with ARGP_NO_HELP.
+
+*/
+
+/* Returns true if CH occurs between BEG and END.  */
+static int
+find_char (char ch, char *beg, char *end)
+{
+  while (beg < end)
+    if (*beg == ch)
+      return 1;
+    else
+      beg++;
+  return 0;
+}
+
+struct hol_cluster;		/* fwd decl */
+
+struct hol_entry
+{
+  /* First option.  */
+  const struct argp_option *opt;
+  /* Number of options (including aliases).  */
+  unsigned num;
+
+  /* A pointers into the HOL's short_options field, to the first short option
+     letter for this entry.  The order of the characters following this point
+     corresponds to the order of options pointed to by OPT, and there are at
+     most NUM.  A short option recorded in a option following OPT is only
+     valid if it occurs in the right place in SHORT_OPTIONS (otherwise it's
+     probably been shadowed by some other entry).  */
+  char *short_options;
+
+  /* Entries are sorted by their group first, in the order:
+       1, 2, ..., n, 0, -m, ..., -2, -1
+     and then alphabetically within each group.  The default is 0.  */
+  int group;
+
+  /* The cluster of options this entry belongs to, or 0 if none.  */
+  struct hol_cluster *cluster;
+
+  /* The argp from which this option came.  */
+  const struct argp *argp;
+};
+
+/* A cluster of entries to reflect the argp tree structure.  */
+struct hol_cluster
+{
+  /* A descriptive header printed before options in this cluster.  */
+  const char *header;
+
+  /* Used to order clusters within the same group with the same parent,
+     according to the order in which they occurred in the parent argp's child
+     list.  */
+  int index;
+
+  /* How to sort this cluster with respect to options and other clusters at the
+     same depth (clusters always follow options in the same group).  */
+  int group;
+
+  /* The cluster to which this cluster belongs, or 0 if it's at the base
+     level.  */
+  struct hol_cluster *parent;
+
+  /* The argp from which this cluster is (eventually) derived.  */
+  const struct argp *argp;
+
+  /* The distance this cluster is from the root.  */
+  int depth;
+
+  /* Clusters in a given hol are kept in a linked list, to make freeing them
+     possible.  */
+  struct hol_cluster *next;
+};
+
+/* A list of options for help.  */
+struct hol
+{
+  /* An array of hol_entry's.  */
+  struct hol_entry *entries;
+  /* The number of entries in this hol.  If this field is zero, the others
+     are undefined.  */
+  unsigned num_entries;
+
+  /* A string containing all short options in this HOL.  Each entry contains
+     pointers into this string, so the order can't be messed with blindly.  */
+  char *short_options;
+
+  /* Clusters of entries in this hol.  */
+  struct hol_cluster *clusters;
+};
+
+/* Create a struct hol from the options in ARGP.  CLUSTER is the
+   hol_cluster in which these entries occur, or 0, if at the root.  */
+static struct hol *
+make_hol (const struct argp *argp, struct hol_cluster *cluster)
+{
+  char *so;
+  const struct argp_option *o;
+  const struct argp_option *opts = argp->options;
+  struct hol_entry *entry;
+  unsigned num_short_options = 0;
+  struct hol *hol = malloc (sizeof (struct hol));
+
+  assert (hol);
+
+  hol->num_entries = 0;
+  hol->clusters = 0;
+
+  if (opts)
+    {
+      int cur_group = 0;
+
+      /* The first option must not be an alias.  */
+      assert (! oalias (opts));
+
+      /* Calculate the space needed.  */
+      for (o = opts; ! oend (o); o++)
+	{
+	  if (! oalias (o))
+	    hol->num_entries++;
+	  if (oshort (o))
+	    num_short_options++;	/* This is an upper bound.  */
+	}
+
+      hol->entries = malloc (sizeof (struct hol_entry) * hol->num_entries);
+      hol->short_options = malloc (num_short_options + 1);
+
+      assert (hol->entries && hol->short_options);
+
+      /* Fill in the entries.  */
+      so = hol->short_options;
+      for (o = opts, entry = hol->entries; ! oend (o); entry++)
+	{
+	  entry->opt = o;
+	  entry->num = 0;
+	  entry->short_options = so;
+	  entry->group = cur_group =
+	    o->group
+	    ? o->group
+	    : ((!o->name && !o->key)
+	       ? cur_group + 1
+	       : cur_group);
+	  entry->cluster = cluster;
+	  entry->argp = argp;
+
+	  do
+	    {
+	      entry->num++;
+	      if (oshort (o) && ! find_char (o->key, hol->short_options, so))
+		/* O has a valid short option which hasn't already been used.*/
+		*so++ = o->key;
+	      o++;
+	    }
+	  while (! oend (o) && oalias (o));
+	}
+      *so = '\0';		/* null terminated so we can find the length */
+    }
+
+  return hol;
+}
+
+/* Add a new cluster to HOL, with the given GROUP and HEADER (taken from the
+   associated argp child list entry), INDEX, and PARENT, and return a pointer
+   to it.  ARGP is the argp that this cluster results from.  */
+static struct hol_cluster *
+hol_add_cluster (struct hol *hol, int group, const char *header, int index,
+		 struct hol_cluster *parent, const struct argp *argp)
+{
+  struct hol_cluster *cl = malloc (sizeof (struct hol_cluster));
+  if (cl)
+    {
+      cl->group = group;
+      cl->header = header;
+
+      cl->index = index;
+      cl->parent = parent;
+      cl->argp = argp;
+      cl->depth = parent ? parent->depth + 1 : 0;
+
+      cl->next = hol->clusters;
+      hol->clusters = cl;
+    }
+  return cl;
+}
+
+/* Free HOL and any resources it uses.  */
+static void
+hol_free (struct hol *hol)
+{
+  struct hol_cluster *cl = hol->clusters;
+
+  while (cl)
+    {
+      struct hol_cluster *next = cl->next;
+      free (cl);
+      cl = next;
+    }
+
+  if (hol->num_entries > 0)
+    {
+      free (hol->entries);
+      free (hol->short_options);
+    }
+
+  free (hol);
+}
+
+static inline int
+hol_entry_short_iterate (const struct hol_entry *entry,
+			 int (*func)(const struct argp_option *opt,
+				     const struct argp_option *real,
+				     const char *domain, void *cookie),
+			 const char *domain, void *cookie)
+{
+  unsigned nopts;
+  int val = 0;
+  const struct argp_option *opt, *real = entry->opt;
+  char *so = entry->short_options;
+
+  for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
+    if (oshort (opt) && *so == opt->key)
+      {
+	if (!oalias (opt))
+	  real = opt;
+	if (ovisible (opt))
+	  val = (*func)(opt, real, domain, cookie);
+	so++;
+      }
+
+  return val;
+}
+
+static inline int
+hol_entry_long_iterate (const struct hol_entry *entry,
+			int (*func)(const struct argp_option *opt,
+				    const struct argp_option *real,
+				    const char *domain, void *cookie),
+			const char *domain, void *cookie)
+{
+  unsigned nopts;
+  int val = 0;
+  const struct argp_option *opt, *real = entry->opt;
+
+  for (opt = real, nopts = entry->num; nopts > 0 && !val; opt++, nopts--)
+    if (opt->name)
+      {
+	if (!oalias (opt))
+	  real = opt;
+	if (ovisible (opt))
+	  val = (*func)(opt, real, domain, cookie);
+      }
+
+  return val;
+}
+
+/* Iterator that returns true for the first short option.  */
+static inline int
+until_short (const struct argp_option *opt, const struct argp_option *real UNUSED,
+	     const char *domain UNUSED, void *cookie UNUSED)
+{
+  return oshort (opt) ? opt->key : 0;
+}
+
+/* Returns the first valid short option in ENTRY, or 0 if there is none.  */
+static char
+hol_entry_first_short (const struct hol_entry *entry)
+{
+  return hol_entry_short_iterate (entry, until_short,
+				  entry->argp->argp_domain, 0);
+}
+
+/* Returns the first valid long option in ENTRY, or 0 if there is none.  */
+static const char *
+hol_entry_first_long (const struct hol_entry *entry)
+{
+  const struct argp_option *opt;
+  unsigned num;
+  for (opt = entry->opt, num = entry->num; num > 0; opt++, num--)
+    if (opt->name && ovisible (opt))
+      return opt->name;
+  return 0;
+}
+
+/* Returns the entry in HOL with the long option name NAME, or 0 if there is
+   none.  */
+static struct hol_entry *
+hol_find_entry (struct hol *hol, const char *name)
+{
+  struct hol_entry *entry = hol->entries;
+  unsigned num_entries = hol->num_entries;
+
+  while (num_entries-- > 0)
+    {
+      const struct argp_option *opt = entry->opt;
+      unsigned num_opts = entry->num;
+
+      while (num_opts-- > 0)
+	if (opt->name && ovisible (opt) && strcmp (opt->name, name) == 0)
+	  return entry;
+	else
+	  opt++;
+
+      entry++;
+    }
+
+  return 0;
+}
+
+/* If an entry with the long option NAME occurs in HOL, set it's special
+   sort position to GROUP.  */
+static void
+hol_set_group (struct hol *hol, const char *name, int group)
+{
+  struct hol_entry *entry = hol_find_entry (hol, name);
+  if (entry)
+    entry->group = group;
+}
+
+/* Order by group:  0, 1, 2, ..., n, -m, ..., -2, -1.
+   EQ is what to return if GROUP1 and GROUP2 are the same.  */
+static int
+group_cmp (int group1, int group2, int eq)
+{
+  if (group1 == group2)
+    return eq;
+  else if ((group1 < 0 && group2 < 0) || (group1 >= 0 && group2
>= 0))
+    return group1 - group2;
+  else
+    return group2 - group1;
+}
+
+/* Compare clusters CL1 & CL2 by the order that they should appear in
+   output.  */
+static int
+hol_cluster_cmp (const struct hol_cluster *cl1, const struct hol_cluster *cl2)
+{
+  /* If one cluster is deeper than the other, use its ancestor at the same
+     level, so that finding the common ancestor is straightforward.  */
+  while (cl1->depth < cl2->depth)
+    cl1 = cl1->parent;
+  while (cl2->depth < cl1->depth)
+    cl2 = cl2->parent;
+
+  /* Now reduce both clusters to their ancestors at the point where both have
+     a common parent; these can be directly compared.  */
+  while (cl1->parent != cl2->parent)
+    cl1 = cl1->parent, cl2 = cl2->parent;
+
+  return group_cmp (cl1->group, cl2->group, cl2->index - cl1->index);
+}
+
+/* Return the ancestor of CL that's just below the root (i.e., has a parent
+   of 0).  */
+static struct hol_cluster *
+hol_cluster_base (struct hol_cluster *cl)
+{
+  while (cl->parent)
+    cl = cl->parent;
+  return cl;
+}
+
+/* Return true if CL1 is a child of CL2.  */
+static int
+hol_cluster_is_child (const struct hol_cluster *cl1,
+		      const struct hol_cluster *cl2)
+{
+  while (cl1 && cl1 != cl2)
+    cl1 = cl1->parent;
+  return cl1 == cl2;
+}
+
+/* Given the name of a OPTION_DOC option, modifies NAME to start at the tail
+   that should be used for comparisons, and returns true iff it should be
+   treated as a non-option.  */
+
+/* FIXME: Can we use unsigned char * for the argument? */
+static int
+canon_doc_option (const char **name)
+{
+  int non_opt;
+  /* Skip initial whitespace.  */
+  while (isspace ( (unsigned char) **name))
+    (*name)++;
+  /* Decide whether this looks like an option (leading `-') or not.  */
+  non_opt = (**name != '-');
+  /* Skip until part of name used for sorting.  */
+  while (**name && !isalnum ( (unsigned char) **name))
+    (*name)++;
+  return non_opt;
+}
+
+/* Order ENTRY1 & ENTRY2 by the order which they should appear in a help
+   listing.  */
+static int
+hol_entry_cmp (const struct hol_entry *entry1,
+	       const struct hol_entry *entry2)
+{
+  /* The group numbers by which the entries should be ordered; if either is
+     in a cluster, then this is just the group within the cluster.  */
+  int group1 = entry1->group, group2 = entry2->group;
+
+  if (entry1->cluster != entry2->cluster)
+    {
+      /* The entries are not within the same cluster, so we can't compare them
+	 directly, we have to use the appropiate clustering level too.  */
+      if (! entry1->cluster)
+	/* ENTRY1 is at the `base level', not in a cluster, so we have to
+	   compare it's group number with that of the base cluster in which
+	   ENTRY2 resides.  Note that if they're in the same group, the
+	   clustered option always comes laster.  */
+	return group_cmp (group1, hol_cluster_base (entry2->cluster)->group, -1);
+      else if (! entry2->cluster)
+	/* Likewise, but ENTRY2's not in a cluster.  */
+	return group_cmp (hol_cluster_base (entry1->cluster)->group, group2, 1);
+      else
+	/* Both entries are in clusters, we can just compare the clusters.  */
+	return hol_cluster_cmp (entry1->cluster, entry2->cluster);
+    }
+  else if (group1 == group2)
+    /* The entries are both in the same cluster and group, so compare them
+       alphabetically.  */
+    {
+      int short1 = hol_entry_first_short (entry1);
+      int short2 = hol_entry_first_short (entry2);
+      int doc1 = odoc (entry1->opt);
+      int doc2 = odoc (entry2->opt);
+      /* FIXME: Can we use unsigned char * instead? */
+      const char *long1 = hol_entry_first_long (entry1);
+      const char *long2 = hol_entry_first_long (entry2);
+
+      if (doc1)
+	doc1 = canon_doc_option (&long1);
+      if (doc2)
+	doc2 = canon_doc_option (&long2);
+
+      if (doc1 != doc2)
+	/* `documentation' options always follow normal options (or
+	   documentation options that *look* like normal options).  */
+	return doc1 - doc2;
+      else if (!short1 && !short2 && long1 && long2)
+	/* Only long options.  */
+	return __strcasecmp (long1, long2);
+      else
+	/* Compare short/short, long/short, short/long, using the first
+	   character of long options.  Entries without *any* valid
+	   options (such as options with OPTION_HIDDEN set) will be put
+	   first, but as they're not displayed, it doesn't matter where
+	   they are.  */
+	{
+	  unsigned char first1 = short1 ? short1 : long1 ? *long1 : 0;
+	  unsigned char first2 = short2 ? short2 : long2 ? *long2 : 0;
+#ifdef _tolower
+	  int lower_cmp = _tolower (first1) - _tolower (first2);
+#else
+	  int lower_cmp = tolower (first1) - tolower (first2);
+#endif
+	  /* Compare ignoring case, except when the options are both the
+	     same letter, in which case lower-case always comes first.  */
+	  /* NOTE: The subtraction below does the right thing
+	     even with eight-bit chars: first1 and first2 are
+	     converted to int *before* the subtraction. */
+	  return lower_cmp ? lower_cmp : first2 - first1;
+	}
+    }
+  else
+    /* Within the same cluster, but not the same group, so just compare
+       groups.  */
+    return group_cmp (group1, group2, 0);
+}
+
+/* Version of hol_entry_cmp with correct signature for qsort.  */
+static int
+hol_entry_qcmp (const void *entry1_v, const void *entry2_v)
+{
+  return hol_entry_cmp (entry1_v, entry2_v);
+}
+
+/* Sort HOL by group and alphabetically by option name (with short options
+   taking precedence over long).  Since the sorting is for display purposes
+   only, the shadowing of options isn't effected.  */
+static void
+hol_sort (struct hol *hol)
+{
+  if (hol->num_entries > 0)
+    qsort (hol->entries, hol->num_entries, sizeof (struct hol_entry),
+	   hol_entry_qcmp);
+}
+
+/* Append MORE to HOL, destroying MORE in the process.  Options in HOL shadow
+   any in MORE with the same name.  */
+static void
+hol_append (struct hol *hol, struct hol *more)
+{
+  struct hol_cluster **cl_end = &hol->clusters;
+
+  /* Steal MORE's cluster list, and add it to the end of HOL's.  */
+  while (*cl_end)
+    cl_end = &(*cl_end)->next;
+  *cl_end = more->clusters;
+  more->clusters = 0;
+
+  /* Merge entries.  */
+  if (more->num_entries > 0)
+    {
+      if (hol->num_entries == 0)
+	{
+	  hol->num_entries = more->num_entries;
+	  hol->entries = more->entries;
+	  hol->short_options = more->short_options;
+	  more->num_entries = 0;	/* Mark MORE's fields as invalid.  */
+	}
+      else
+	/* Append the entries in MORE to those in HOL, taking care to only add
+	   non-shadowed SHORT_OPTIONS values.  */
+	{
+	  unsigned left;
+	  char *so, *more_so;
+	  struct hol_entry *e;
+	  unsigned num_entries = hol->num_entries + more->num_entries;
+	  struct hol_entry *entries =
+	    malloc (num_entries * sizeof (struct hol_entry));
+	  unsigned hol_so_len = strlen (hol->short_options);
+	  char *short_options =
+	    malloc (hol_so_len + strlen (more->short_options) + 1);
+
+	  __mempcpy (__mempcpy (entries, hol->entries,
+				hol->num_entries * sizeof (struct hol_entry)),
+		     more->entries,
+		     more->num_entries * sizeof (struct hol_entry));
+
+	  __mempcpy (short_options, hol->short_options, hol_so_len);
+
+	  /* Fix up the short options pointers from HOL.  */
+	  for (e = entries, left = hol->num_entries; left > 0; e++, left--)
+	    e->short_options += (short_options - hol->short_options);
+
+	  /* Now add the short options from MORE, fixing up its entries
+	     too.  */
+	  so = short_options + hol_so_len;
+	  more_so = more->short_options;
+	  for (left = more->num_entries; left > 0; e++, left--)
+	    {
+	      int opts_left;
+	      const struct argp_option *opt;
+
+	      e->short_options = so;
+
+	      for (opts_left = e->num, opt = e->opt; opts_left; opt++, opts_left--)
+		{
+		  int ch = *more_so;
+		  if (oshort (opt) && ch == opt->key)
+		    /* The next short option in MORE_SO, CH, is from OPT.  */
+		    {
+		      if (! find_char (ch, short_options,
+				       short_options + hol_so_len))
+			/* The short option CH isn't shadowed by HOL's options,
+			   so add it to the sum.  */
+			*so++ = ch;
+		      more_so++;
+		    }
+		}
+	    }
+
+	  *so = '\0';
+
+	  free (hol->entries);
+	  free (hol->short_options);
+
+	  hol->entries = entries;
+	  hol->num_entries = num_entries;
+	  hol->short_options = short_options;
+	}
+    }
+
+  hol_free (more);
+}
+
+/* Inserts enough spaces to make sure STREAM is at column COL.  */
+static void
+indent_to (argp_fmtstream_t stream, unsigned col)
+{
+  int needed = col - __argp_fmtstream_point (stream);
+  while (needed-- > 0)
+    __argp_fmtstream_putc (stream, ' ');
+}
+
+/* Output to STREAM either a space, or a newline if there isn't room for at
+   least ENSURE characters before the right margin.  */
+static void
+space (argp_fmtstream_t stream, size_t ensure)
+{
+  if (__argp_fmtstream_point (stream) + ensure
+      >= __argp_fmtstream_rmargin (stream))
+    __argp_fmtstream_putc (stream, '\n');
+  else
+    __argp_fmtstream_putc (stream, ' ');
+}
+
+/* If the option REAL has an argument, we print it in using the printf
+   format REQ_FMT or OPT_FMT depending on whether it's a required or
+   optional argument.  */
+static void
+arg (const struct argp_option *real, const char *req_fmt, const char *opt_fmt,
+     const char *domain UNUSED, argp_fmtstream_t stream)
+{
+  if (real->arg)
+    {
+      if (real->flags & OPTION_ARG_OPTIONAL)
+	__argp_fmtstream_printf (stream, opt_fmt,
+				 dgettext (domain, real->arg));
+      else
+	__argp_fmtstream_printf (stream, req_fmt,
+				 dgettext (domain, real->arg));
+    }
+}
+
+/* Helper functions for hol_entry_help.  */
+
+/* State used during the execution of hol_help.  */
+struct hol_help_state
+{
+  /* PREV_ENTRY should contain the previous entry printed, or 0.  */
+  struct hol_entry *prev_entry;
+
+  /* If an entry is in a different group from the previous one, and SEP_GROUPS
+     is true, then a blank line will be printed before any output. */
+  int sep_groups;
+
+  /* True if a duplicate option argument was suppressed (only ever set if
+     UPARAMS.dup_args is false).  */
+  int suppressed_dup_arg;
+};
+
+/* Some state used while printing a help entry (used to communicate with
+   helper functions).  See the doc for hol_entry_help for more info, as most
+   of the fields are copied from its arguments.  */
+struct pentry_state
+{
+  const struct hol_entry *entry;
+  argp_fmtstream_t stream;
+  struct hol_help_state *hhstate;
+
+  /* True if nothing's been printed so far.  */
+  int first;
+
+  /* If non-zero, the state that was used to print this help.  */
+  const struct argp_state *state;
+};
+
+/* If a user doc filter should be applied to DOC, do so.  */
+static const char *
+filter_doc (const char *doc, int key, const struct argp *argp,
+	    const struct argp_state *state)
+{
+  if (argp->help_filter)
+    /* We must apply a user filter to this output.  */
+    {
+      void *input = __argp_input (argp, state);
+      return (*argp->help_filter) (key, doc, input);
+    }
+  else
+    /* No filter.  */
+    return doc;
+}
+
+/* Prints STR as a header line, with the margin lines set appropiately, and
+   notes the fact that groups should be separated with a blank line.  ARGP is
+   the argp that should dictate any user doc filtering to take place.  Note
+   that the previous wrap margin isn't restored, but the left margin is reset
+   to 0.  */
+static void
+print_header (const char *str, const struct argp *argp,
+	      struct pentry_state *pest)
+{
+  const char *tstr = dgettext (argp->argp_domain, str);
+  const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_HEADER, argp, pest->state);
+
+  if (fstr)
+    {
+      if (*fstr)
+	{
+	  if (pest->hhstate->prev_entry)
+	    /* Precede with a blank line.  */
+	    __argp_fmtstream_putc (pest->stream, '\n');
+	  indent_to (pest->stream, uparams.header_col);
+	  __argp_fmtstream_set_lmargin (pest->stream, uparams.header_col);
+	  __argp_fmtstream_set_wmargin (pest->stream, uparams.header_col);
+	  __argp_fmtstream_puts (pest->stream, fstr);
+	  __argp_fmtstream_set_lmargin (pest->stream, 0);
+	  __argp_fmtstream_putc (pest->stream, '\n');
+	}
+
+      pest->hhstate->sep_groups = 1; /* Separate subsequent groups. */
+    }
+
+  if (fstr != tstr)
+    free ((char *) fstr);
+}
+
+/* Inserts a comma if this isn't the first item on the line, and then makes
+   sure we're at least to column COL.  If this *is* the first item on a line,
+   prints any pending whitespace/headers that should precede this line. Also
+   clears FIRST.  */
+static void
+comma (unsigned col, struct pentry_state *pest)
+{
+  if (pest->first)
+    {
+      const struct hol_entry *pe = pest->hhstate->prev_entry;
+      const struct hol_cluster *cl = pest->entry->cluster;
+
+      if (pest->hhstate->sep_groups && pe &&
pest->entry->group != pe->group)
+	__argp_fmtstream_putc (pest->stream, '\n');
+
+      if (cl && cl->header && *cl->header
+	  && (!pe
+	      || (pe->cluster != cl
+		  && !hol_cluster_is_child (pe->cluster, cl))))
+	/* If we're changing clusters, then this must be the start of the
+	   ENTRY's cluster unless that is an ancestor of the previous one
+	   (in which case we had just popped into a sub-cluster for a bit).
+	   If so, then print the cluster's header line.  */
+	{
+	  int old_wm = __argp_fmtstream_wmargin (pest->stream);
+	  print_header (cl->header, cl->argp, pest);
+	  __argp_fmtstream_set_wmargin (pest->stream, old_wm);
+	}
+
+      pest->first = 0;
+    }
+  else
+    __argp_fmtstream_puts (pest->stream, ", ");
+
+  indent_to (pest->stream, col);
+}
+
+/* Print help for ENTRY to STREAM.  */
+static void
+hol_entry_help (struct hol_entry *entry, const struct argp_state *state,
+		argp_fmtstream_t stream, struct hol_help_state *hhstate)
+{
+  unsigned num;
+  const struct argp_option *real = entry->opt, *opt;
+  char *so = entry->short_options;
+  int have_long_opt = 0;	/* We have any long options.  */
+  /* Saved margins.  */
+  int old_lm = __argp_fmtstream_set_lmargin (stream, 0);
+  int old_wm = __argp_fmtstream_wmargin (stream);
+  /* PEST is a state block holding some of our variables that we'd like to
+     share with helper functions.  */
+
+  /* Decent initializers are a GNU extension, so don't use it here. */
+  struct pentry_state pest;
+  pest.entry = entry;
+  pest.stream = stream;
+  pest.hhstate = hhstate;
+  pest.first = 1;
+  pest.state = state;
+
+  if (! odoc (real))
+    for (opt = real, num = entry->num; num > 0; opt++, num--)
+      if (opt->name && ovisible (opt))
+	{
+	  have_long_opt = 1;
+	  break;
+	}
+
+  /* First emit short options.  */
+  __argp_fmtstream_set_wmargin (stream, uparams.short_opt_col); /* For truly bizarre
cases. */
+  for (opt = real, num = entry->num; num > 0; opt++, num--)
+    if (oshort (opt) && opt->key == *so)
+      /* OPT has a valid (non shadowed) short option.  */
+      {
+	if (ovisible (opt))
+	  {
+	    comma (uparams.short_opt_col, &pest);
+	    __argp_fmtstream_putc (stream, '-');
+	    __argp_fmtstream_putc (stream, *so);
+	    if (!have_long_opt || uparams.dup_args)
+	      arg (real, " %s", "[%s]", state->root_argp->argp_domain,
stream);
+	    else if (real->arg)
+	      hhstate->suppressed_dup_arg = 1;
+	  }
+	so++;
+      }
+
+  /* Now, long options.  */
+  if (odoc (real))
+    /* A `documentation' option.  */
+    {
+      __argp_fmtstream_set_wmargin (stream, uparams.doc_opt_col);
+      for (opt = real, num = entry->num; num > 0; opt++, num--)
+	if (opt->name && ovisible (opt))
+	  {
+	    comma (uparams.doc_opt_col, &pest);
+	    /* Calling gettext here isn't quite right, since sorting will
+	       have been done on the original; but documentation options
+	       should be pretty rare anyway...  */
+	    __argp_fmtstream_puts (stream,
+				   dgettext (state->root_argp->argp_domain,
+					     opt->name));
+	  }
+    }
+  else
+    /* A real long option.  */
+    {
+      int first_long_opt = 1;
+
+      __argp_fmtstream_set_wmargin (stream, uparams.long_opt_col);
+      for (opt = real, num = entry->num; num > 0; opt++, num--)
+	if (opt->name && ovisible (opt))
+	  {
+	    comma (uparams.long_opt_col, &pest);
+	    __argp_fmtstream_printf (stream, "--%s", opt->name);
+	    if (first_long_opt || uparams.dup_args)
+	      arg (real, "=%s", "[=%s]",
state->root_argp->argp_domain,
+		   stream);
+	    else if (real->arg)
+	      hhstate->suppressed_dup_arg = 1;
+	  }
+    }
+
+  /* Next, documentation strings.  */
+  __argp_fmtstream_set_lmargin (stream, 0);
+
+  if (pest.first)
+    {
+      /* Didn't print any switches, what's up?  */
+      if (!oshort (real) && !real->name)
+	/* This is a group header, print it nicely.  */
+	print_header (real->doc, entry->argp, &pest);
+      else
+	/* Just a totally shadowed option or null header; print nothing.  */
+	goto cleanup;		/* Just return, after cleaning up.  */
+    }
+  else
+    {
+      const char *tstr = real->doc ? dgettext (state->root_argp->argp_domain,
+					       real->doc) : 0;
+      const char *fstr = filter_doc (tstr, real->key, entry->argp, state);
+      if (fstr && *fstr)
+	{
+	  unsigned int col = __argp_fmtstream_point (stream);
+
+	  __argp_fmtstream_set_lmargin (stream, uparams.opt_doc_col);
+	  __argp_fmtstream_set_wmargin (stream, uparams.opt_doc_col);
+
+	  if (col > (unsigned int) (uparams.opt_doc_col + 3))
+	    __argp_fmtstream_putc (stream, '\n');
+	  else if (col >= (unsigned int) uparams.opt_doc_col)
+	    __argp_fmtstream_puts (stream, "   ");
+	  else
+	    indent_to (stream, uparams.opt_doc_col);
+
+	  __argp_fmtstream_puts (stream, fstr);
+	}
+      if (fstr && fstr != tstr)
+	free ((char *) fstr);
+
+      /* Reset the left margin.  */
+      __argp_fmtstream_set_lmargin (stream, 0);
+      __argp_fmtstream_putc (stream, '\n');
+    }
+
+  hhstate->prev_entry = entry;
+
+cleanup:
+  __argp_fmtstream_set_lmargin (stream, old_lm);
+  __argp_fmtstream_set_wmargin (stream, old_wm);
+}
+
+/* Output a long help message about the options in HOL to STREAM.  */
+static void
+hol_help (struct hol *hol, const struct argp_state *state,
+	  argp_fmtstream_t stream)
+{
+  unsigned num;
+  struct hol_entry *entry;
+  struct hol_help_state hhstate = { 0, 0, 0 };
+
+  for (entry = hol->entries, num = hol->num_entries; num > 0; entry++, num--)
+    hol_entry_help (entry, state, stream, &hhstate);
+
+  if (hhstate.suppressed_dup_arg && uparams.dup_args_note)
+    {
+      const char *tstr = dgettext (state->root_argp->argp_domain, "\
+Mandatory or optional arguments to long options are also mandatory or \
+optional for any corresponding short options.");
+      const char *fstr = filter_doc (tstr, ARGP_KEY_HELP_DUP_ARGS_NOTE,
+				     state ? state->root_argp : 0, state);
+      if (fstr && *fstr)
+	{
+	  __argp_fmtstream_putc (stream, '\n');
+	  __argp_fmtstream_puts (stream, fstr);
+	  __argp_fmtstream_putc (stream, '\n');
+	}
+      if (fstr && fstr != tstr)
+	free ((char *) fstr);
+    }
+}
+
+/* Helper functions for hol_usage.  */
+
+/* If OPT is a short option without an arg, append its key to the string
+   pointer pointer to by COOKIE, and advance the pointer.  */
+static int
+add_argless_short_opt (const struct argp_option *opt,
+		       const struct argp_option *real,
+		       const char *domain UNUSED, void *cookie)
+{
+  char **snao_end = cookie;
+  if (!(opt->arg || real->arg)
+      && !((opt->flags | real->flags) & OPTION_NO_USAGE))
+    *(*snao_end)++ = opt->key;
+  return 0;
+}
+
+/* If OPT is a short option with an arg, output a usage entry for it to the
+   stream pointed at by COOKIE.  */
+static int
+usage_argful_short_opt (const struct argp_option *opt,
+			const struct argp_option *real,
+			const char *domain UNUSED, void *cookie)
+{
+  argp_fmtstream_t stream = cookie;
+  const char *arg = opt->arg;
+  int flags = opt->flags | real->flags;
+
+  if (! arg)
+    arg = real->arg;
+
+  if (arg && !(flags & OPTION_NO_USAGE))
+    {
+      arg = dgettext (domain, arg);
+
+      if (flags & OPTION_ARG_OPTIONAL)
+	__argp_fmtstream_printf (stream, " [-%c[%s]]", opt->key, arg);
+      else
+	{
+	  /* Manually do line wrapping so that it (probably) won't
+	     get wrapped at the embedded space.  */
+	  space (stream, 6 + strlen (arg));
+	  __argp_fmtstream_printf (stream, "[-%c %s]", opt->key, arg);
+	}
+    }
+
+  return 0;
+}
+
+/* Output a usage entry for the long option opt to the stream pointed at by
+   COOKIE.  */
+static int
+usage_long_opt (const struct argp_option *opt,
+		const struct argp_option *real,
+		const char *domain UNUSED, void *cookie)
+{
+  argp_fmtstream_t stream = cookie;
+  const char *arg = opt->arg;
+  int flags = opt->flags | real->flags;
+
+  if (! arg)
+    arg = real->arg;
+
+  if (! (flags & OPTION_NO_USAGE))
+    {
+      if (arg)
+	{
+	  arg = dgettext (domain, arg);
+	  if (flags & OPTION_ARG_OPTIONAL)
+	    __argp_fmtstream_printf (stream, " [--%s[=%s]]", opt->name, arg);
+	  else
+	    __argp_fmtstream_printf (stream, " [--%s=%s]", opt->name, arg);
+	}
+      else
+	__argp_fmtstream_printf (stream, " [--%s]", opt->name);
+    }
+
+  return 0;
+}
+
+/* Print a short usage description for the arguments in HOL to STREAM.  */
+static void
+hol_usage (struct hol *hol, argp_fmtstream_t stream)
+{
+  if (hol->num_entries > 0)
+    {
+      unsigned nentries;
+      struct hol_entry *entry;
+      char *short_no_arg_opts = alloca (strlen (hol->short_options) + 1);
+      char *snao_end = short_no_arg_opts;
+
+      /* First we put a list of short options without arguments.  */
+      for (entry = hol->entries, nentries = hol->num_entries
+	   ; nentries > 0
+	   ; entry++, nentries--)
+	hol_entry_short_iterate (entry, add_argless_short_opt,
+				 entry->argp->argp_domain, &snao_end);
+      if (snao_end > short_no_arg_opts)
+	{
+	  *snao_end++ = 0;
+	  __argp_fmtstream_printf (stream, " [-%s]", short_no_arg_opts);
+	}
+
+      /* Now a list of short options *with* arguments.  */
+      for (entry = hol->entries, nentries = hol->num_entries
+	   ; nentries > 0
+	   ; entry++, nentries--)
+	hol_entry_short_iterate (entry, usage_argful_short_opt,
+				 entry->argp->argp_domain, stream);
+
+      /* Finally, a list of long options (whew!).  */
+      for (entry = hol->entries, nentries = hol->num_entries
+	   ; nentries > 0
+	   ; entry++, nentries--)
+	hol_entry_long_iterate (entry, usage_long_opt,
+				entry->argp->argp_domain, stream);
+    }
+}
+
+/* Make a HOL containing all levels of options in ARGP.  CLUSTER is the
+   cluster in which ARGP's entries should be clustered, or 0.  */
+static struct hol *
+argp_hol (const struct argp *argp, struct hol_cluster *cluster)
+{
+  const struct argp_child *child = argp->children;
+  struct hol *hol = make_hol (argp, cluster);
+  if (child)
+    while (child->argp)
+      {
+	struct hol_cluster *child_cluster =
+	  ((child->group || child->header)
+	   /* Put CHILD->argp within its own cluster.  */
+	   ? hol_add_cluster (hol, child->group, child->header,
+			      child - argp->children, cluster, argp)
+	   /* Just merge it into the parent's cluster.  */
+	   : cluster);
+	hol_append (hol, argp_hol (child->argp, child_cluster)) ;
+	child++;
+      }
+  return hol;
+}
+
+/* Calculate how many different levels with alternative args strings exist in
+   ARGP.  */
+static size_t
+argp_args_levels (const struct argp *argp)
+{
+  size_t levels = 0;
+  const struct argp_child *child = argp->children;
+
+  if (argp->args_doc && strchr (argp->args_doc, '\n'))
+    levels++;
+
+  if (child)
+    while (child->argp)
+      levels += argp_args_levels ((child++)->argp);
+
+  return levels;
+}
+
+/* Print all the non-option args documented in ARGP to STREAM.  Any output is
+   preceded by a space.  LEVELS is a pointer to a byte vector the length
+   returned by argp_args_levels; it should be initialized to zero, and
+   updated by this routine for the next call if ADVANCE is true.  True is
+   returned as long as there are more patterns to output.  */
+static int
+argp_args_usage (const struct argp *argp, const struct argp_state *state,
+		 char **levels, int advance, argp_fmtstream_t stream)
+{
+  char *our_level = *levels;
+  int multiple = 0;
+  const struct argp_child *child = argp->children;
+  const char *tdoc = dgettext (argp->argp_domain, argp->args_doc), *nl = 0;
+  const char *fdoc = filter_doc (tdoc, ARGP_KEY_HELP_ARGS_DOC, argp, state);
+
+  if (fdoc)
+    {
+      const char *cp = fdoc;
+      nl = __strchrnul (cp, '\n');
+      if (*nl != '\0')
+	/* This is a `multi-level' args doc; advance to the correct position
+	   as determined by our state in LEVELS, and update LEVELS.  */
+	{
+	  int i;
+	  multiple = 1;
+	  for (i = 0; i < *our_level; i++)
+	    cp = nl + 1, nl = __strchrnul (cp, '\n');
+	  (*levels)++;
+	}
+
+      /* Manually do line wrapping so that it (probably) won't get wrapped at
+	 any embedded spaces.  */
+      space (stream, 1 + nl - cp);
+
+      __argp_fmtstream_write (stream, cp, nl - cp);
+    }
+  if (fdoc && fdoc != tdoc)
+    free ((char *)fdoc);	/* Free user's modified doc string.  */
+
+  if (child)
+    while (child->argp)
+      advance = !argp_args_usage ((child++)->argp, state, levels, advance, stream);
+
+  if (advance && multiple)
+    {
+      /* Need to increment our level.  */
+      if (*nl)
+	/* There's more we can do here.  */
+	{
+	  (*our_level)++;
+	  advance = 0;		/* Our parent shouldn't advance also. */
+	}
+      else if (*our_level > 0)
+	/* We had multiple levels, but used them up; reset to zero.  */
+	*our_level = 0;
+    }
+
+  return !advance;
+}
+
+/* Print the documentation for ARGP to STREAM; if POST is false, then
+   everything preceeding a `\v' character in the documentation strings (or
+   the whole string, for those with none) is printed, otherwise, everything
+   following the `\v' character (nothing for strings without).  Each separate
+   bit of documentation is separated a blank line, and if PRE_BLANK is true,
+   then the first is as well.  If FIRST_ONLY is true, only the first
+   occurrence is output.  Returns true if anything was output.  */
+static int
+argp_doc (const struct argp *argp, const struct argp_state *state,
+	  int post, int pre_blank, int first_only,
+	  argp_fmtstream_t stream)
+{
+  const char *text;
+  const char *inp_text;
+  void *input = 0;
+  int anything = 0;
+  size_t inp_text_limit = 0;
+  const char *doc = dgettext (argp->argp_domain, argp->doc);
+  const struct argp_child *child = argp->children;
+
+  if (doc)
+    {
+      char *vt = strchr (doc, '\v');
+      inp_text = post ? (vt ? vt + 1 : 0) : doc;
+      inp_text_limit = (!post && vt) ? (vt - doc) : 0;
+    }
+  else
+    inp_text = 0;
+
+  if (argp->help_filter)
+    /* We have to filter the doc strings.  */
+    {
+      if (inp_text_limit)
+	/* Copy INP_TEXT so that it's nul-terminated.  */
+	inp_text = STRNDUP (inp_text, inp_text_limit);
+      input = __argp_input (argp, state);
+      text =
+	(*argp->help_filter) (post
+			      ? ARGP_KEY_HELP_POST_DOC
+			      : ARGP_KEY_HELP_PRE_DOC,
+			      inp_text, input);
+    }
+  else
+    text = (const char *) inp_text;
+
+  if (text)
+    {
+      if (pre_blank)
+	__argp_fmtstream_putc (stream, '\n');
+
+      if (text == inp_text && inp_text_limit)
+	__argp_fmtstream_write (stream, inp_text, inp_text_limit);
+      else
+	__argp_fmtstream_puts (stream, text);
+
+      if (__argp_fmtstream_point (stream) > __argp_fmtstream_lmargin (stream))
+	__argp_fmtstream_putc (stream, '\n');
+
+      anything = 1;
+    }
+
+  if (text && text != inp_text)
+    free ((char *) text);	/* Free TEXT returned from the help filter.  */
+  if (inp_text && inp_text_limit && argp->help_filter)
+    free ((char *) inp_text);	/* We copied INP_TEXT, so free it now.  */
+
+  if (post && argp->help_filter)
+    /* Now see if we have to output a ARGP_KEY_HELP_EXTRA text.  */
+    {
+      text = (*argp->help_filter) (ARGP_KEY_HELP_EXTRA, 0, input);
+      if (text)
+	{
+	  if (anything || pre_blank)
+	    __argp_fmtstream_putc (stream, '\n');
+	  __argp_fmtstream_puts (stream, text);
+	  free ((char *) text);
+	  if (__argp_fmtstream_point (stream)
+	      > __argp_fmtstream_lmargin (stream))
+	    __argp_fmtstream_putc (stream, '\n');
+	  anything = 1;
+	}
+    }
+
+  if (child)
+    while (child->argp && !(first_only && anything))
+      anything |=
+	argp_doc ((child++)->argp, state,
+		  post, anything || pre_blank, first_only,
+		  stream);
+
+  return anything;
+}
+
+/* Output a usage message for ARGP to STREAM.  If called from
+   argp_state_help, STATE is the relevent parsing state.  FLAGS are from the
+   set ARGP_HELP_*.  NAME is what to use wherever a `program name' is
+   needed. */
+
+static void
+_help (const struct argp *argp, const struct argp_state *state, FILE *stream,
+       unsigned flags, const char *name)
+{
+  int anything = 0;		/* Whether we've output anything.  */
+  struct hol *hol = 0;
+  argp_fmtstream_t fs;
+
+  if (! stream)
+    return;
+
+  FLOCKFILE (stream);
+
+  if (! uparams.valid)
+    fill_in_uparams (state);
+
+  fs = __argp_make_fmtstream (stream, 0, uparams.rmargin, 0);
+  if (! fs)
+    {
+      FUNLOCKFILE (stream);
+      return;
+    }
+
+  if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE | ARGP_HELP_LONG))
+    {
+      hol = argp_hol (argp, 0);
+
+      /* If present, these options always come last.  */
+      hol_set_group (hol, "help", -1);
+      hol_set_group (hol, "version", -1);
+
+      hol_sort (hol);
+    }
+
+  if (flags & (ARGP_HELP_USAGE | ARGP_HELP_SHORT_USAGE))
+    /* Print a short `Usage:' message.  */
+    {
+      int first_pattern = 1, more_patterns;
+      size_t num_pattern_levels = argp_args_levels (argp);
+      char *pattern_levels = alloca (num_pattern_levels);
+
+      memset (pattern_levels, 0, num_pattern_levels);
+
+      do
+	{
+	  int old_lm;
+	  int old_wm = __argp_fmtstream_set_wmargin (fs, uparams.usage_indent);
+	  char *levels = pattern_levels;
+
+	  if (first_pattern)
+	    __argp_fmtstream_printf (fs, "%s %s",
+				     dgettext (argp->argp_domain, "Usage:"),
+				     name);
+	  else
+	    __argp_fmtstream_printf (fs, "%s %s",
+				     dgettext (argp->argp_domain, "  or: "),
+				     name);
+
+	  /* We set the lmargin as well as the wmargin, because hol_usage
+	     manually wraps options with newline to avoid annoying breaks.  */
+	  old_lm = __argp_fmtstream_set_lmargin (fs, uparams.usage_indent);
+
+	  if (flags & ARGP_HELP_SHORT_USAGE)
+	    /* Just show where the options go.  */
+	    {
+	      if (hol->num_entries > 0)
+		__argp_fmtstream_puts (fs, dgettext (argp->argp_domain,
+						     " [OPTION...]"));
+	    }
+	  else
+	    /* Actually print the options.  */
+	    {
+	      hol_usage (hol, fs);
+	      flags |= ARGP_HELP_SHORT_USAGE; /* But only do so once.  */
+	    }
+
+	  more_patterns = argp_args_usage (argp, state, &levels, 1, fs);
+
+	  __argp_fmtstream_set_wmargin (fs, old_wm);
+	  __argp_fmtstream_set_lmargin (fs, old_lm);
+
+	  __argp_fmtstream_putc (fs, '\n');
+	  anything = 1;
+
+	  first_pattern = 0;
+	}
+      while (more_patterns);
+    }
+
+  if (flags & ARGP_HELP_PRE_DOC)
+    anything |= argp_doc (argp, state, 0, 0, 1, fs);
+
+  if (flags & ARGP_HELP_SEE)
+    {
+      __argp_fmtstream_printf (fs, dgettext (argp->argp_domain, "\
+Try `%s --help' or `%s --usage' for more information.\n"),
+			       name, name);
+      anything = 1;
+    }
+
+  if (flags & ARGP_HELP_LONG)
+    /* Print a long, detailed help message.  */
+    {
+      /* Print info about all the options.  */
+      if (hol->num_entries > 0)
+	{
+	  if (anything)
+	    __argp_fmtstream_putc (fs, '\n');
+	  hol_help (hol, state, fs);
+	  anything = 1;
+	}
+    }
+
+  if (flags & ARGP_HELP_POST_DOC)
+    /* Print any documentation strings at the end.  */
+    anything |= argp_doc (argp, state, 1, anything, 0, fs);
+
+  if ((flags & ARGP_HELP_BUG_ADDR) && argp_program_bug_address)
+    {
+      if (anything)
+	__argp_fmtstream_putc (fs, '\n');
+      __argp_fmtstream_printf (fs, dgettext (argp->argp_domain,
+					     "Report bugs to %s.\n"),
+ 			       argp_program_bug_address);
+      anything = 1;
+    }
+
+  FUNLOCKFILE (stream);
+
+  if (hol)
+    hol_free (hol);
+
+  __argp_fmtstream_free (fs);
+}
+
+/* Output a usage message for ARGP to STREAM.  FLAGS are from the set
+   ARGP_HELP_*.  NAME is what to use wherever a `program name' is needed. */
+void __argp_help (const struct argp *argp, FILE *stream,
+		  unsigned flags, char *name)
+{
+  _help (argp, 0, stream, flags, name);
+}
+#ifdef weak_alias
+weak_alias (__argp_help, argp_help)
+#endif
+
+char *__argp_basename(char *name)
+{
+  char *short_name = strrchr(name, '/');
+  return short_name ? short_name + 1 : name;
+}
+
+char *
+__argp_short_program_name(const struct argp_state *state)
+{
+  if (state)
+    return state->name;
+#if HAVE_DECL_PROGRAM_INVOCATION_SHORT_NAME
+  return program_invocation_short_name;
+#elif HAVE_DECL_PROGRAM_INVOCATION_NAME
+  return __argp_basename(program_invocation_name);
+#else /* !HAVE_DECL_PROGRAM_INVOCATION_NAME */
+  /* FIXME: What now? Miles suggests that it is better to use NULL,
+     but currently the value is passed on directly to fputs_unlocked,
+     so that requires more changes. */
+# if __GNUC__
+#  warning No reasonable value to return
+  return "";
+# endif /* __GNUC__ */
+#endif /* !HAVE_DECL_PROGRAM_INVOCATION_NAME */
+}
+
+/* Output, if appropriate, a usage message for STATE to STREAM.  FLAGS are
+   from the set ARGP_HELP_*.  */
+void
+__argp_state_help (const struct argp_state *state, FILE *stream, unsigned flags)
+{
+  if ((!state || ! (state->flags & ARGP_NO_ERRS)) && stream)
+    {
+      if (state && (state->flags & ARGP_LONG_ONLY))
+	flags |= ARGP_HELP_LONG_ONLY;
+
+      _help (state ? state->root_argp : 0, state, stream, flags,
+	     __argp_short_program_name(state));
+
+      if (!state || ! (state->flags & ARGP_NO_EXIT))
+	{
+	  if (flags & ARGP_HELP_EXIT_ERR)
+	    exit (argp_err_exit_status);
+	  if (flags & ARGP_HELP_EXIT_OK)
+	    exit (0);
+	}
+  }
+}
+#ifdef weak_alias
+weak_alias (__argp_state_help, argp_state_help)
+#endif
+
+/* If appropriate, print the printf string FMT and following args, preceded
+   by the program name and `:', to stderr, and followed by a `Try ... --help'
+   message, then exit (1).  */
+void
+__argp_error (const struct argp_state *state, const char *fmt, ...)
+{
+  if (!state || !(state->flags & ARGP_NO_ERRS))
+    {
+      FILE *stream = state ? state->err_stream : stderr;
+
+      if (stream)
+	{
+	  va_list ap;
+
+	  FLOCKFILE (stream);
+
+	  FPUTS_UNLOCKED (__argp_short_program_name(state),
+			  stream);
+	  PUTC_UNLOCKED (':', stream);
+	  PUTC_UNLOCKED (' ', stream);
+
+	  va_start (ap, fmt);
+	  vfprintf (stream, fmt, ap);
+	  va_end (ap);
+
+	  PUTC_UNLOCKED ('\n', stream);
+
+	  __argp_state_help (state, stream, ARGP_HELP_STD_ERR);
+
+	  FUNLOCKFILE (stream);
+	}
+    }
+}
+#ifdef weak_alias
+weak_alias (__argp_error, argp_error)
+#endif
+
+/* Similar to the standard gnu error-reporting function error(), but will
+   respect the ARGP_NO_EXIT and ARGP_NO_ERRS flags in STATE, and will print
+   to STATE->err_stream.  This is useful for argument parsing code that is
+   shared between program startup (when exiting is desired) and runtime
+   option parsing (when typically an error code is returned instead).  The
+   difference between this function and argp_error is that the latter is for
+   *parsing errors*, and the former is for other problems that occur during
+   parsing but don't reflect a (syntactic) problem with the input.  */
+void
+__argp_failure (const struct argp_state *state, int status, int errnum,
+		const char *fmt, ...)
+{
+  if (!state || !(state->flags & ARGP_NO_ERRS))
+    {
+      FILE *stream = state ? state->err_stream : stderr;
+
+      if (stream)
+	{
+	  FLOCKFILE (stream);
+
+	  FPUTS_UNLOCKED (__argp_short_program_name(state),
+			  stream);
+
+	  if (fmt)
+	    {
+	      va_list ap;
+
+	      PUTC_UNLOCKED (':', stream);
+	      PUTC_UNLOCKED (' ', stream);
+
+	      va_start (ap, fmt);
+	      vfprintf (stream, fmt, ap);
+	      va_end (ap);
+	    }
+
+	  if (errnum)
+	    {
+	      PUTC_UNLOCKED (':', stream);
+	      PUTC_UNLOCKED (' ', stream);
+	      fputs (STRERROR (errnum), stream);
+	    }
+
+	  PUTC_UNLOCKED ('\n', stream);
+
+	  FUNLOCKFILE (stream);
+
+	  if (status && (!state || !(state->flags & ARGP_NO_EXIT)))
+	    exit (status);
+	}
+    }
+}
+#ifdef weak_alias
+weak_alias (__argp_failure, argp_failure)
+#endif
Index: configure.ac
--- configure.ac	(revision 0)
+++ configure.ac	(revision 0)
@@ -0,0 +1,97 @@
+dnl Process this file with autoconf to produce a configure script.
+
+dnl This configure.ac is only for building a standalone argp library.
+AC_PREREQ(2.54)
+AC_INIT(argp-ba.c)
+AC_CONFIG_AUX_DIR([../build-aux])
+AM_INIT_AUTOMAKE(argp, standalone-1.3)
+AM_CONFIG_HEADER(config.h)
+
+# GNU libc defaults to supplying the ISO C library functions only. The
+# _GNU_SOURCE define enables these extensions, in particular we want
+# errno.h to declare program_invocation_name. Enable it on all
+# systems; no problems have been reported with it so far.
+AC_GNU_SOURCE
+
+# Checks for programs.
+AC_PROG_CC
+AC_PROG_MAKE_SET
+AC_PROG_LIBTOOL
+AM_PROG_CC_STDC
+
+if test "x$am_cv_prog_cc_stdc" = xno ; then
+  AC_ERROR([the C compiler doesn't handle ANSI-C])
+fi
+
+# Checks for libraries.
+
+# Checks for header files.
+AC_HEADER_STDC
+AC_CHECK_HEADERS(limits.h malloc.h unistd.h)
+
+# Checks for typedefs, structures, and compiler characteristics.
+AC_C_CONST
+AC_C_INLINE
+AC_TYPE_SIZE_T
+
+LSH_GCC_ATTRIBUTES
+
+# Checks for library functions.
+AC_FUNC_ALLOCA
+AC_FUNC_VPRINTF
+AC_CHECK_FUNCS(strerror)
+
+AC_REPLACE_FUNCS(mempcpy strndup strchrnul)
+
+dnl ARGP_CHECK_FUNC(includes, function-call [, if-found [, if-not-found]])
+AC_DEFUN([ARGP_CHECK_FUNC],
+  [AS_VAR_PUSHDEF([ac_func], m4_substr([$2], 0, m4_index([$2], [(])))
+   AS_VAR_PUSHDEF([ac_var], [ac_cv_func_call_]ac_func)
+   AH_TEMPLATE(AS_TR_CPP(HAVE_[]ac_func),
+               [Define to 1 if you have the `]ac_func[' function.])
+   AC_CACHE_CHECK([for $2], ac_var,
+     [AC_TRY_LINK([$1], [$2],
+		  [AS_VAR_SET(ac_var, yes)],
+		  [AS_VAR_SET(ac_var, no)])])
+   if test AS_VAR_GET(ac_var) = yes ; then
+     ifelse([$3],,
+	    [AC_DEFINE_UNQUOTED(AS_TR_CPP(HAVE_[]ac_func))],
+	    [$3
+])
+   else
+     ifelse([$4],, true, [$4])
+   fi
+   AS_VAR_POPDEF([ac_var])
+   AS_VAR_POPDEF([ac_func])
+   ])
+
+# At least on freebsd, putc_unlocked is a macro, so the standard
+# AC_CHECK_FUNCS doesn't work well.
+ARGP_CHECK_FUNC([#include <stdio.h>], [putc_unlocked('x', stdout)])
+
+AC_CHECK_FUNCS(flockfile)
+AC_CHECK_FUNCS(fputs_unlocked fwrite_unlocked)
+
+# Used only by argp-test.c, so don't use AC_REPLACE_FUNCS.
+AC_CHECK_FUNCS(strdup asprintf)
+
+AC_CHECK_DECLS([program_invocation_name, program_invocation_short_name],
+               [], [], [[#include <errno.h>]])
+
+# Set these flags *last*, or else the test programs won't compile
+if test x$GCC = xyes ; then
+  # Using -ggdb3 makes (some versions of) Redhat's gcc-2.96 dump core
+  if $CC --version | grep '^2\.96$' 1>/dev/null 2>&1; then
+    true
+  else
+    CFLAGS="$CFLAGS -ggdb3"
+  fi
+  CFLAGS="$CFLAGS -Wall -W \
+ -Wmissing-prototypes -Wmissing-declarations -Wstrict-prototypes \
+ -Waggregate-return \
+ -Wpointer-arith -Wbad-function-cast -Wnested-externs"
+fi
+
+CPPFLAGS="$CPPFLAGS -I$srcdir"
+
+AC_OUTPUT(Makefile testsuite/Makefile)
Index: strchrnul.c
--- strchrnul.c	(revision 0)
+++ strchrnul.c	(revision 0)
@@ -0,0 +1,21 @@
+/* strchrnul.c
+ *
+ */
+
+/* Written by Niels Möller &lt;nisse(a)lysator.liu.se&gt;
+ *
+ * This file is hereby placed in the public domain.
+ */
+
+/* FIXME: What is this function supposed to do? My guess is that it is
+ * like strchr, but returns a pointer to the NUL character, not a NULL
+ * pointer, if the character isn't found. */
+
+char *strchrnul(const char *s, int c)
+{
+  const char *p = s;
+  while (*p && (*p != c))
+    p++;
+
+  return (char *) p;
+}
Index: argp-pvh.c
--- argp-pvh.c	(revision 0)
+++ argp-pvh.c	(revision 0)
@@ -0,0 +1,32 @@
+/* Default definition for ARGP_PROGRAM_VERSION_HOOK.
+   Copyright (C) 1996, 1997, 1999, 2004 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include "argp.h"
+
+/* If set by the user program to a non-zero value, then a default option
+   --version is added (unless the ARGP_NO_HELP flag is used), which calls
+   this function with a stream to print the version to and a pointer to the
+   current parsing state, and then exits (unless the ARGP_NO_EXIT flag is
+   used).  This variable takes precedent over ARGP_PROGRAM_VERSION.  */
+void (*argp_program_version_hook) (FILE *stream, struct argp_state *state) = 0;
Index: TODO
--- TODO	(revision 0)
+++ TODO	(revision 0)
@@ -0,0 +1,2 @@
+Figure out what to do about extern inline, as it's not supported by
+newer gcc-3.x.
Index: acinclude.m4
--- acinclude.m4	(revision 0)
+++ acinclude.m4	(revision 0)
@@ -0,0 +1,968 @@
+dnl Try to detect the type of the third arg to getsockname() et al
+AC_DEFUN([LSH_TYPE_SOCKLEN_T],
+[AH_TEMPLATE([socklen_t], [Length type used by getsockopt])
+AC_CACHE_CHECK([for socklen_t in sys/socket.h], ac_cv_type_socklen_t,
+[AC_EGREP_HEADER(socklen_t, sys/socket.h,
+  [ac_cv_type_socklen_t=yes], [ac_cv_type_socklen_t=no])])
+if test $ac_cv_type_socklen_t = no; then
+        AC_MSG_CHECKING(for AIX)
+        AC_EGREP_CPP(yes, [
+#ifdef _AIX
+ yes
+#endif
+],[
+AC_MSG_RESULT(yes)
+AC_DEFINE(socklen_t, size_t)
+],[
+AC_MSG_RESULT(no)
+AC_DEFINE(socklen_t, int)
+])
+fi
+])
+
+dnl LSH_PATH_ADD(path-id, directory)
+AC_DEFUN([LSH_PATH_ADD],
+[AC_MSG_CHECKING($2)
+ac_exists=no
+if test -d "$2/." ; then
+  ac_real_dir=`cd $2 && pwd`
+  if test -n "$ac_real_dir" ; then
+    ac_exists=yes
+    for old in $1_REAL_DIRS ; do
+      ac_found=no
+      if test x$ac_real_dir = x$old ; then
+        ac_found=yes;
+	break;
+      fi
+    done
+    if test $ac_found = yes ; then
+      AC_MSG_RESULT(already added)
+    else
+      AC_MSG_RESULT(added)
+      # LDFLAGS="$LDFLAGS -L $2"
+      $1_REAL_DIRS="$ac_real_dir [$]$1_REAL_DIRS"
+      $1_DIRS="$2 [$]$1_DIRS"
+    fi
+  fi
+fi
+if test $ac_exists = no ; then
+  AC_MSG_RESULT(not found)
+fi
+])
+
+dnl LSH_RPATH_ADD(dir)
+AC_DEFUN([LSH_RPATH_ADD], [LSH_PATH_ADD(RPATH_CANDIDATE, $1)])
+
+dnl LSH_RPATH_INIT(candidates)
+AC_DEFUN([LSH_RPATH_INIT],
+[AC_MSG_CHECKING([for -R flag])
+RPATHFLAG=''
+case `uname -sr` in
+  OSF1\ V4.*)
+    RPATHFLAG="-rpath "
+    ;;
+  IRIX\ 6.*)
+    RPATHFLAG="-rpath "
+    ;;
+  IRIX\ 5.*)
+    RPATHFLAG="-rpath "
+    ;;
+  SunOS\ 5.*)
+    if test "$TCC" = "yes"; then
+      # tcc doesn't know about -R
+      RPATHFLAG="-Wl,-R,"
+    else
+      RPATHFLAG=-R
+    fi
+    ;;
+  Linux\ 2.*)
+    RPATHFLAG="-Wl,-rpath,"
+    ;;
+  *)
+    :
+    ;;
+esac
+
+if test x$RPATHFLAG = x ; then
+  AC_MSG_RESULT(none)
+else
+  AC_MSG_RESULT([using $RPATHFLAG])
+fi
+
+RPATH_CANDIDATE_REAL_DIRS=''
+RPATH_CANDIDATE_DIRS=''
+
+AC_MSG_RESULT([Searching for libraries])
+
+for d in $1 ; do
+  LSH_RPATH_ADD($d)
+done
+])    
+
+dnl Try to execute a main program, and if it fails, try adding some
+dnl -R flag.
+dnl LSH_RPATH_FIX
+AC_DEFUN([LSH_RPATH_FIX],
+[if test $cross_compiling = no -a "x$RPATHFLAG" != x ; then
+  ac_success=no
+  AC_TRY_RUN([int main(int argc, char **argv) { return 0; }],
+    ac_success=yes, ac_success=no, :)
+  
+  if test $ac_success = no ; then
+    AC_MSG_CHECKING([Running simple test program failed. Trying -R flags])
+dnl echo RPATH_CANDIDATE_DIRS = $RPATH_CANDIDATE_DIRS
+    ac_remaining_dirs=''
+    ac_rpath_save_LDFLAGS="$LDFLAGS"
+    for d in $RPATH_CANDIDATE_DIRS ; do
+      if test $ac_success = yes ; then
+  	ac_remaining_dirs="$ac_remaining_dirs $d"
+      else
+  	LDFLAGS="$RPATHFLAG$d $LDFLAGS"
+dnl echo LDFLAGS = $LDFLAGS
+  	AC_TRY_RUN([int main(int argc, char **argv) { return 0; }],
+  	  [ac_success=yes
+  	  ac_rpath_save_LDFLAGS="$LDFLAGS"
+  	  AC_MSG_RESULT([adding $RPATHFLAG$d])
+  	  ],
+  	  [ac_remaining_dirs="$ac_remaining_dirs $d"], :)
+  	LDFLAGS="$ac_rpath_save_LDFLAGS"
+      fi
+    done
+    RPATH_CANDIDATE_DIRS=$ac_remaining_dirs
+  fi
+  if test $ac_success = no ; then
+    AC_MSG_RESULT(failed)
+  fi
+fi
+])
+
+dnl Like AC_CHECK_LIB, but uses $KRB_LIBS rather than $LIBS.
+dnl LSH_CHECK_KRB_LIB(LIBRARY, FUNCTION, [, ACTION-IF-FOUND [,
+dnl                  ACTION-IF-NOT-FOUND [, OTHER-LIBRARIES]]])
+
+AC_DEFUN([LSH_CHECK_KRB_LIB],
+[AC_CHECK_LIB([$1], [$2],
+  ifelse([$3], ,
+      [[ac_tr_lib=HAVE_LIB`echo $1 | sed -e 's/[^a-zA-Z0-9_]/_/g' \
+     	    -e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/'`
+        AC_DEFINE_UNQUOTED($ac_tr_lib)
+        KRB_LIBS="-l$1 $KRB_LIBS"
+      ]], [$3]),
+  ifelse([$4], , , [$4
+])dnl
+, [$5 $KRB_LIBS])
+])
+
+dnl LSH_LIB_ARGP(ACTION-IF-OK, ACTION-IF-BAD)
+AC_DEFUN([LSH_LIB_ARGP],
+[ ac_argp_save_LIBS="$LIBS"
+  ac_argp_save_LDFLAGS="$LDFLAGS"
+  ac_argp_ok=no
+  # First check if we can link with argp.
+  AC_SEARCH_LIBS(argp_parse, argp,
+  [ LSH_RPATH_FIX
+    AC_CACHE_CHECK([for working argp],
+      lsh_cv_lib_argp_works,
+      [ AC_TRY_RUN(
+[#include <argp.h>
+#include <stdlib.h>
+
+static const struct argp_option
+options[] =
+{
+  { NULL, 0, NULL, 0, NULL, 0 }
+};
+
+struct child_state
+{
+  int n;
+};
+
+static error_t
+child_parser(int key, char *arg, struct argp_state *state)
+{
+  struct child_state *input = (struct child_state *) state->input;
+  
+  switch(key)
+    {
+    default:
+      return ARGP_ERR_UNKNOWN;
+    case ARGP_KEY_END:
+      if (!input->n)
+	input->n = 1;
+      break;
+    }
+  return 0;
+}
+
+const struct argp child_argp =
+{
+  options,
+  child_parser,
+  NULL, NULL, NULL, NULL, NULL
+};
+
+struct main_state
+{
+  struct child_state child;
+  int m;
+};
+
+static error_t
+main_parser(int key, char *arg, struct argp_state *state)
+{
+  struct main_state *input = (struct main_state *) state->input;
+
+  switch(key)
+    {
+    default:
+      return ARGP_ERR_UNKNOWN;
+    case ARGP_KEY_INIT:
+      state->child_inputs[0] = &input->child;
+      break;
+    case ARGP_KEY_END:
+      if (!input->m)
+	input->m = input->child.n;
+      
+      break;
+    }
+  return 0;
+}
+
+static const struct argp_child
+main_children[] =
+{
+  { &child_argp, 0, "", 0 },
+  { NULL, 0, NULL, 0}
+};
+
+static const struct argp
+main_argp =
+{ options, main_parser, 
+  NULL,
+  NULL,
+  main_children,
+  NULL, NULL
+};
+
+int main(int argc, char **argv)
+{
+  struct main_state input = { { 0 }, 0 };
+  char *v[2] = { "foo", NULL };
+
+  argp_parse(&main_argp, 1, v, 0, NULL, &input);
+
+  if ( (input.m == 1) && (input.child.n == 1) )
+    return 0;
+  else
+    return 1;
+}
+], lsh_cv_lib_argp_works=yes,
+   lsh_cv_lib_argp_works=no,
+   lsh_cv_lib_argp_works=no)])
+
+  if test x$lsh_cv_lib_argp_works = xyes ; then
+    ac_argp_ok=yes
+  else
+    # Reset link flags
+    LIBS="$ac_argp_save_LIBS"
+    LDFLAGS="$ac_argp_save_LDFLAGS"
+  fi])
+
+  if test x$ac_argp_ok = xyes ; then
+    ifelse([$1],, true, [$1])
+  else
+    ifelse([$2],, true, [$2])
+  fi   
+])
+
+dnl LSH_GCC_ATTRIBUTES
+dnl Check for gcc's __attribute__ construction
+
+AC_DEFUN([LSH_GCC_ATTRIBUTES],
+[AC_CACHE_CHECK(for __attribute__,
+	       lsh_cv_c_attribute,
+[ AC_TRY_COMPILE([
+#include <stdlib.h>
+],
+[
+static void foo(void) __attribute__ ((noreturn));
+
+static void __attribute__ ((noreturn))
+foo(void)
+{
+  exit(1);
+}
+],
+lsh_cv_c_attribute=yes,
+lsh_cv_c_attribute=no)])
+
+AH_TEMPLATE([HAVE_GCC_ATTRIBUTE], [Define if the compiler understands __attribute__])
+if test "x$lsh_cv_c_attribute" = "xyes"; then
+  AC_DEFINE(HAVE_GCC_ATTRIBUTE)
+fi
+
+AH_BOTTOM(
+[#if __GNUC__ && HAVE_GCC_ATTRIBUTE
+# define NORETURN __attribute__ ((__noreturn__))
+# define PRINTF_STYLE(f, a) __attribute__ ((__format__ (__printf__, f, a)))
+# define UNUSED __attribute__ ((__unused__))
+#else
+# define NORETURN
+# define PRINTF_STYLE(f, a)
+# define UNUSED
+#endif
+])])
+
+AC_DEFUN([LSH_GCC_FUNCTION_NAME],
+[# Check for gcc's __FUNCTION__ variable
+AH_TEMPLATE([HAVE_GCC_FUNCTION],
+	    [Define if the compiler understands __FUNCTION__])
+AH_BOTTOM(
+[#if HAVE_GCC_FUNCTION
+# define FUNCTION_NAME __FUNCTION__
+#else
+# define FUNCTION_NAME "Unknown"
+#endif
+])
+
+AC_CACHE_CHECK(for __FUNCTION__,
+	       lsh_cv_c_FUNCTION,
+  [ AC_TRY_COMPILE(,
+      [ #if __GNUC__ == 3
+	#  error __FUNCTION__ is broken in gcc-3
+	#endif
+        void foo(void) { char c = __FUNCTION__[0]; } ],
+      lsh_cv_c_FUNCTION=yes,
+      lsh_cv_c_FUNCTION=no)])
+
+if test "x$lsh_cv_c_FUNCTION" = "xyes"; then
+  AC_DEFINE(HAVE_GCC_FUNCTION)
+fi
+])
+
+# Check for alloca, and include the standard blurb in config.h
+AC_DEFUN([LSH_FUNC_ALLOCA],
+[AC_FUNC_ALLOCA
+AH_BOTTOM(
+[/* AIX requires this to be the first thing in the file.  */
+#ifndef __GNUC__
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# else
+#  ifdef _AIX
+ #pragma alloca
+#  else
+#   ifndef alloca /* predefined by HP cc +Olibcalls */
+char *alloca ();
+#   endif
+#  endif
+# endif
+#else /* defined __GNUC__ */
+# if HAVE_ALLOCA_H
+#  include <alloca.h>
+# endif
+#endif
+])])
+
+AC_DEFUN([LSH_FUNC_STRERROR],
+[AC_CHECK_FUNCS(strerror)
+AH_BOTTOM(
+[#if HAVE_STRERROR
+#define STRERROR strerror
+#else
+#define STRERROR(x) (sys_errlist[x])
+#endif
+])])
+
+AC_DEFUN([LSH_FUNC_STRSIGNAL],
+[AC_CHECK_FUNCS(strsignal)
+AC_CHECK_DECLS([sys_siglist, _sys_siglist])
+AH_BOTTOM(
+[#if HAVE_STRSIGNAL
+# define STRSIGNAL strsignal
+#else /* !HAVE_STRSIGNAL */
+# if HAVE_DECL_SYS_SIGLIST
+#  define STRSIGNAL(x) (sys_siglist[x])
+# else
+#  if HAVE_DECL__SYS_SIGLIST
+#   define STRSIGNAL(x) (_sys_siglist[x])
+#  else
+#   define STRSIGNAL(x) "Unknown signal"
+#   if __GNUC__
+#    warning Using dummy STRSIGNAL
+#   endif
+#  endif
+# endif
+#endif /* !HAVE_STRSIGNAL */
+])])
+
+dnl @synopsis AX_CREATE_STDINT_H [( HEADER-TO-GENERATE [, HEADERS-TO-CHECK])]
+dnl
+dnl the "ISO C9X: 7.18 Integer types <stdint.h>" section requires the
+dnl existence of an include file <stdint.h> that defines a set of 
+dnl typedefs, especially uint8_t,int32_t,uintptr_t.
+dnl Many older installations will not provide this file, but some will
+dnl have the very same definitions in <inttypes.h>. In other enviroments
+dnl we can use the inet-types in <sys/types.h> which would define the
+dnl typedefs int8_t and u_int8_t respectivly.
+dnl
+dnl This macros will create a local "_stdint.h" or the headerfile given as 
+dnl an argument. In many cases that file will just "#include <stdint.h>"

+dnl or "#include <inttypes.h>", while in other environments it will
provide 
+dnl the set of basic 'stdint's definitions/typedefs: 
+dnl   int8_t,uint8_t,int16_t,uint16_t,int32_t,uint32_t,intptr_t,uintptr_t
+dnl   int_least32_t.. int_fast32_t.. intmax_t
+dnl which may or may not rely on the definitions of other files,
+dnl or using the AC_CHECK_SIZEOF macro to determine the actual
+dnl sizeof each type.
+dnl
+dnl if your header files require the stdint-types you will want to create an
+dnl installable file mylib-int.h that all your other installable header
+dnl may include. So if you have a library package named "mylib", just use
+dnl      AX_CREATE_STDINT_H(mylib-int.h) 
+dnl in configure.ac and go to install that very header file in Makefile.am
+dnl along with the other headers (mylib.h) - and the mylib-specific headers
+dnl can simply use "#include <mylib-int.h>" to obtain the stdint-types.
+dnl
+dnl Remember, if the system already had a valid <stdint.h>, the generated
+dnl file will include it directly. No need for fuzzy HAVE_STDINT_H things...
+dnl
+dnl @, (status: used on new platforms) (see http://ac-archive.sf.net/gstdint/)
+dnl @version $Id: acinclude.m4 1289 2004-02-23 16:22:02Z akim $
+dnl @author  Guido Draheim &lt;guidod(a)gmx.de&gt; 
+
+AC_DEFUN([AX_CREATE_STDINT_H],
+[# ------ AX CREATE STDINT H -------------------------------------
+AC_MSG_CHECKING([for stdint types])
+ac_stdint_h=`echo ifelse($1, , _stdint.h, $1)`
+# try to shortcircuit - if the default include path of the compiler
+# can find a "stdint.h" header then we assume that all compilers can.
+AC_CACHE_VAL([ac_cv_header_stdint_t],[
+old_CXXFLAGS="$CXXFLAGS" ; CXXFLAGS=""
+old_CPPFLAGS="$CPPFLAGS" ; CPPFLAGS=""
+old_CFLAGS="$CFLAGS"     ; CFLAGS=""
+AC_TRY_COMPILE([#include <stdint.h>],[int_least32_t v = 0;],
+[ac_cv_stdint_result="(assuming C99 compatible system)"
+ ac_cv_header_stdint_t="stdint.h"; ],
+[ac_cv_header_stdint_t=""])
+CXXFLAGS="$old_CXXFLAGS"
+CPPFLAGS="$old_CPPFLAGS"
+CFLAGS="$old_CFLAGS" ])
+
+v="... $ac_cv_header_stdint_h"
+if test "$ac_stdint_h" = "stdint.h" ; then
+ AC_MSG_RESULT([(are you sure you want them in ./stdint.h?)])
+elif test "$ac_stdint_h" = "inttypes.h" ; then
+ AC_MSG_RESULT([(are you sure you want them in ./inttypes.h?)])
+elif test "_$ac_cv_header_stdint_t" = "_" ; then
+ AC_MSG_RESULT([(putting them into $ac_stdint_h)$v])
+else
+ ac_cv_header_stdint="$ac_cv_header_stdint_t"
+ AC_MSG_RESULT([$ac_cv_header_stdint (shortcircuit)])
+fi
+
+if test "_$ac_cv_header_stdint_t" = "_" ; then # can not
shortcircuit..
+
+dnl .....intro message done, now do a few system checks.....
+dnl btw, all CHECK_TYPE macros do automatically "DEFINE" a type, therefore
+dnl we use the autoconf implementation detail _AC CHECK_TYPE_NEW instead
+
+inttype_headers=`echo $2 | sed -e 's/,/ /g'`
+
+ac_cv_stdint_result="(no helpful system typedefs seen)"
+AC_CACHE_CHECK([for stdint uintptr_t], [ac_cv_header_stdint_x],[
+ ac_cv_header_stdint_x="" # the 1997 typedefs (inttypes.h)
+  AC_MSG_RESULT([(..)])
+  for i in stdint.h inttypes.h sys/inttypes.h $inttype_headers ; do
+   unset ac_cv_type_uintptr_t 
+   unset ac_cv_type_uint64_t
+   _AC_CHECK_TYPE_NEW(uintptr_t,[ac_cv_header_stdint_x=$i],dnl
+     continue,[#include <$i>])
+  
AC_CHECK_TYPE(uint64_t,[and64="/uint64_t"],[and64=""],[#include<$i>])
+   ac_cv_stdint_result="(seen uintptr_t$and64 in $i)"
+   break;
+  done
+  AC_MSG_CHECKING([for stdint uintptr_t])
+ ])
+
+if test "_$ac_cv_header_stdint_x" = "_" ; then
+AC_CACHE_CHECK([for stdint uint32_t], [ac_cv_header_stdint_o],[
+ ac_cv_header_stdint_o="" # the 1995 typedefs (sys/inttypes.h)
+  AC_MSG_RESULT([(..)])
+  for i in inttypes.h sys/inttypes.h stdint.h $inttype_headers ; do
+   unset ac_cv_type_uint32_t
+   unset ac_cv_type_uint64_t
+   AC_CHECK_TYPE(uint32_t,[ac_cv_header_stdint_o=$i],dnl
+     continue,[#include <$i>])
+  
AC_CHECK_TYPE(uint64_t,[and64="/uint64_t"],[and64=""],[#include<$i>])
+   ac_cv_stdint_result="(seen uint32_t$and64 in $i)"
+   break;
+  done
+  AC_MSG_CHECKING([for stdint uint32_t])
+ ])
+fi
+
+if test "_$ac_cv_header_stdint_x" = "_" ; then
+if test "_$ac_cv_header_stdint_o" = "_" ; then
+AC_CACHE_CHECK([for stdint u_int32_t], [ac_cv_header_stdint_u],[
+ ac_cv_header_stdint_u="" # the BSD typedefs (sys/types.h)
+  AC_MSG_RESULT([(..)])
+  for i in sys/types.h inttypes.h sys/inttypes.h $inttype_headers ; do
+   unset ac_cv_type_u_int32_t
+   unset ac_cv_type_u_int64_t
+   AC_CHECK_TYPE(u_int32_t,[ac_cv_header_stdint_u=$i],dnl
+     continue,[#include <$i>])
+  
AC_CHECK_TYPE(u_int64_t,[and64="/u_int64_t"],[and64=""],[#include<$i>])
+   ac_cv_stdint_result="(seen u_int32_t$and64 in $i)"
+   break;
+  done
+  AC_MSG_CHECKING([for stdint u_int32_t])
+ ])
+fi fi
+
+dnl if there was no good C99 header file, do some typedef checks...
+if test "_$ac_cv_header_stdint_x" = "_" ; then
+   AC_MSG_CHECKING([for stdint datatype model])
+   AC_MSG_RESULT([(..)])
+   AC_CHECK_SIZEOF(char)
+   AC_CHECK_SIZEOF(short)
+   AC_CHECK_SIZEOF(int)
+   AC_CHECK_SIZEOF(long)
+   AC_CHECK_SIZEOF(void*)
+   ac_cv_stdint_char_model=""
+   ac_cv_stdint_char_model="$ac_cv_stdint_char_model$ac_cv_sizeof_char"
+   ac_cv_stdint_char_model="$ac_cv_stdint_char_model$ac_cv_sizeof_short"
+   ac_cv_stdint_char_model="$ac_cv_stdint_char_model$ac_cv_sizeof_int"
+   ac_cv_stdint_long_model=""
+   ac_cv_stdint_long_model="$ac_cv_stdint_long_model$ac_cv_sizeof_int"
+   ac_cv_stdint_long_model="$ac_cv_stdint_long_model$ac_cv_sizeof_long"
+   ac_cv_stdint_long_model="$ac_cv_stdint_long_model$ac_cv_sizeof_voidp"
+   name="$ac_cv_stdint_long_model"
+   case "$ac_cv_stdint_char_model/$ac_cv_stdint_long_model" in
+    122/242)     name="$name,  IP16 (standard 16bit machine)" ;;
+    122/244)     name="$name,  LP32 (standard 32bit mac/win)" ;;
+    122/*)       name="$name        (unusual int16 model)" ;; 
+    124/444)     name="$name, ILP32 (standard 32bit unixish)" ;;
+    124/488)     name="$name,  LP64 (standard 64bit unixish)" ;;
+    124/448)     name="$name, LLP64 (unusual  64bit unixish)" ;;
+    124/*)       name="$name        (unusual int32 model)" ;; 
+    128/888)     name="$name, ILP64 (unusual  64bit numeric)" ;;
+    128/*)       name="$name        (unusual int64 model)" ;; 
+    222/*|444/*) name="$name        (unusual dsptype)" ;;
+     *)          name="$name        (very unusal model)" ;;
+   esac
+   AC_MSG_RESULT([combined for stdint datatype model...  $name])
+fi
+
+if test "_$ac_cv_header_stdint_x" != "_" ; then
+   ac_cv_header_stdint="$ac_cv_header_stdint_x"
+elif  test "_$ac_cv_header_stdint_o" != "_" ; then
+   ac_cv_header_stdint="$ac_cv_header_stdint_o"
+elif  test "_$ac_cv_header_stdint_u" != "_" ; then
+   ac_cv_header_stdint="$ac_cv_header_stdint_u"
+else
+   ac_cv_header_stdint="stddef.h"
+fi
+
+AC_MSG_CHECKING([for extra inttypes in chosen header])
+AC_MSG_RESULT([($ac_cv_header_stdint)])
+dnl see if int_least and int_fast types are present in _this_ header.
+unset ac_cv_type_int_least32_t
+unset ac_cv_type_int_fast32_t
+AC_CHECK_TYPE(int_least32_t,,,[#include <$ac_cv_header_stdint>])
+AC_CHECK_TYPE(int_fast32_t,,,[#include<$ac_cv_header_stdint>])
+AC_CHECK_TYPE(intmax_t,,,[#include <$ac_cv_header_stdint>])
+
+fi # shortcircut to system "stdint.h"
+# ------------------ PREPARE VARIABLES ------------------------------
+if test "$GCC" = "yes" ; then
+ac_cv_stdint_message="using gnu compiler "`$CC --version | head -1` 
+else
+ac_cv_stdint_message="using $CC"
+fi
+
+AC_MSG_RESULT([make use of $ac_cv_header_stdint in $ac_stdint_h dnl
+$ac_cv_stdint_result])
+
+# ----------------- DONE inttypes.h checks START header -------------
+AC_CONFIG_COMMANDS([$ac_stdint_h],[
+AC_MSG_NOTICE(creating $ac_stdint_h : $_ac_stdint_h)
+ac_stdint=$tmp/_stdint.h
+
+echo "#ifndef" $_ac_stdint_h >$ac_stdint
+echo "#define" $_ac_stdint_h "1" >>$ac_stdint
+echo "#ifndef" _GENERATED_STDINT_H >>$ac_stdint
+echo "#define" _GENERATED_STDINT_H '"'$PACKAGE
$VERSION'"' >>$ac_stdint
+echo "/* generated $ac_cv_stdint_message */" >>$ac_stdint
+if test "_$ac_cv_header_stdint_t" != "_" ; then 
+echo "#define _STDINT_HAVE_STDINT_H" "1" >>$ac_stdint
+fi
+
+cat >>$ac_stdint <<STDINT_EOF
+
+/* ................... shortcircuit part ........................... */
+
+#if defined HAVE_STDINT_H || defined _STDINT_HAVE_STDINT_H
+#include <stdint.h>
+#else
+#include <stddef.h>
+
+/* .................... configured part ............................ */
+
+STDINT_EOF
+
+echo "/* whether we have a C99 compatible stdint header file */"
>>$ac_stdint
+if test "_$ac_cv_header_stdint_x" != "_" ; then
+  ac_header="$ac_cv_header_stdint_x"
+  echo "#define _STDINT_HEADER_INTPTR"
'"'"$ac_header"'"' >>$ac_stdint
+else
+  echo "/* #undef _STDINT_HEADER_INTPTR */" >>$ac_stdint
+fi
+
+echo "/* whether we have a C96 compatible inttypes header file */"
>>$ac_stdint
+if  test "_$ac_cv_header_stdint_o" != "_" ; then
+  ac_header="$ac_cv_header_stdint_o"
+  echo "#define _STDINT_HEADER_UINT32"
'"'"$ac_header"'"' >>$ac_stdint
+else
+  echo "/* #undef _STDINT_HEADER_UINT32 */" >>$ac_stdint
+fi
+
+echo "/* whether we have a BSD compatible inet types header */"
>>$ac_stdint
+if  test "_$ac_cv_header_stdint_u" != "_" ; then
+  ac_header="$ac_cv_header_stdint_u"
+  echo "#define _STDINT_HEADER_U_INT32"
'"'"$ac_header"'"' >>$ac_stdint
+else
+  echo "/* #undef _STDINT_HEADER_U_INT32 */" >>$ac_stdint
+fi
+
+echo "" >>$ac_stdint
+
+if test "_$ac_header" != "_" ; then if test "$ac_header" !=
"stddef.h" ; then
+  echo "#include <$ac_header>" >>$ac_stdint
+  echo "" >>$ac_stdint
+fi fi
+
+echo "/* which 64bit typedef has been found */" >>$ac_stdint
+if test "$ac_cv_type_uint64_t" = "yes" ; then
+echo "#define   _STDINT_HAVE_UINT64_T" "1"  >>$ac_stdint
+else
+echo "/* #undef _STDINT_HAVE_UINT64_T */" >>$ac_stdint
+fi
+if test "$ac_cv_type_u_int64_t" = "yes" ; then
+echo "#define   _STDINT_HAVE_U_INT64_T" "1"  >>$ac_stdint
+else
+echo "/* #undef _STDINT_HAVE_U_INT64_T */" >>$ac_stdint
+fi
+echo "" >>$ac_stdint
+
+echo "/* which type model has been detected */" >>$ac_stdint
+if test "_$ac_cv_stdint_char_model" != "_" ; then
+echo "#define   _STDINT_CHAR_MODEL" "$ac_cv_stdint_char_model"
>>$ac_stdint
+echo "#define   _STDINT_LONG_MODEL" "$ac_cv_stdint_long_model"
>>$ac_stdint
+else
+echo "/* #undef _STDINT_CHAR_MODEL // skipped */" >>$ac_stdint
+echo "/* #undef _STDINT_LONG_MODEL // skipped */" >>$ac_stdint
+fi
+echo "" >>$ac_stdint
+
+echo "/* whether int_least types were detected */" >>$ac_stdint
+if test "$ac_cv_type_int_least32_t" = "yes"; then
+echo "#define   _STDINT_HAVE_INT_LEAST32_T" "1"  >>$ac_stdint
+else
+echo "/* #undef _STDINT_HAVE_INT_LEAST32_T */" >>$ac_stdint
+fi
+echo "/* whether int_fast types were detected */" >>$ac_stdint
+if test "$ac_cv_type_int_fast32_t" = "yes"; then
+echo "#define   _STDINT_HAVE_INT_FAST32_T" "1" >>$ac_stdint
+else
+echo "/* #undef _STDINT_HAVE_INT_FAST32_T */" >>$ac_stdint
+fi
+echo "/* whether intmax_t type was detected */" >>$ac_stdint
+if test "$ac_cv_type_intmax_t" = "yes"; then
+echo "#define   _STDINT_HAVE_INTMAX_T" "1" >>$ac_stdint
+else
+echo "/* #undef _STDINT_HAVE_INTMAX_T */" >>$ac_stdint
+fi
+echo "" >>$ac_stdint
+
+  cat >>$ac_stdint <<STDINT_EOF
+/* .................... detections part ............................ */
+
+/* whether we need to define bitspecific types from compiler base types */
+#ifndef _STDINT_HEADER_INTPTR
+#ifndef _STDINT_HEADER_UINT32
+#ifndef _STDINT_HEADER_U_INT32
+#define _STDINT_NEED_INT_MODEL_T
+#else
+#define _STDINT_HAVE_U_INT_TYPES
+#endif
+#endif
+#endif
+
+#ifdef _STDINT_HAVE_U_INT_TYPES
+#undef _STDINT_NEED_INT_MODEL_T
+#endif
+
+#ifdef  _STDINT_CHAR_MODEL
+#if     _STDINT_CHAR_MODEL+0 == 122 || _STDINT_CHAR_MODEL+0 == 124
+#ifndef _STDINT_BYTE_MODEL
+#define _STDINT_BYTE_MODEL 12
+#endif
+#endif
+#endif
+
+#ifndef _STDINT_HAVE_INT_LEAST32_T
+#define _STDINT_NEED_INT_LEAST_T
+#endif
+
+#ifndef _STDINT_HAVE_INT_FAST32_T
+#define _STDINT_NEED_INT_FAST_T
+#endif
+
+#ifndef _STDINT_HEADER_INTPTR
+#define _STDINT_NEED_INTPTR_T
+#ifndef _STDINT_HAVE_INTMAX_T
+#define _STDINT_NEED_INTMAX_T
+#endif
+#endif
+
+
+/* .................... definition part ............................ */
+
+/* some system headers have good uint64_t */
+#ifndef _HAVE_UINT64_T
+#if     defined _STDINT_HAVE_UINT64_T  || defined HAVE_UINT64_T
+#define _HAVE_UINT64_T
+#elif   defined _STDINT_HAVE_U_INT64_T || defined HAVE_U_INT64_T
+#define _HAVE_UINT64_T
+typedef u_int64_t uint64_t;
+#endif
+#endif
+
+#ifndef _HAVE_UINT64_T
+/* .. here are some common heuristics using compiler runtime specifics */
+#if defined __STDC_VERSION__ && defined __STDC_VERSION__ >= 199901L
+#define _HAVE_UINT64_T
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+
+#elif !defined __STRICT_ANSI__
+#if defined _MSC_VER || defined __WATCOMC__ || defined __BORLANDC__
+#define _HAVE_UINT64_T
+typedef __int64 int64_t;
+typedef unsigned __int64 uint64_t;
+
+#elif defined __GNUC__ || defined __MWERKS__ || defined __ELF__
+/* note: all ELF-systems seem to have loff-support which needs 64-bit */
+#if !defined _NO_LONGLONG
+#define _HAVE_UINT64_T
+typedef long long int64_t;
+typedef unsigned long long uint64_t;
+#endif
+
+#elif defined __alpha || (defined __mips && defined _ABIN32)
+#if !defined _NO_LONGLONG
+typedef long int64_t;
+typedef unsigned long uint64_t;
+#endif
+  /* compiler/cpu type to define int64_t */
+#endif
+#endif
+#endif
+
+#if defined _STDINT_HAVE_U_INT_TYPES
+/* int8_t int16_t int32_t defined by inet code, redeclare the u_intXX types */
+typedef u_int8_t uint8_t;
+typedef u_int16_t uint16_t;
+typedef u_int32_t uint32_t;
+
+/* glibc compatibility */
+#ifndef __int8_t_defined
+#define __int8_t_defined
+#endif
+#endif
+
+#ifdef _STDINT_NEED_INT_MODEL_T
+/* we must guess all the basic types. Apart from byte-adressable system, */
+/* there a few 32-bit-only dsp-systems that we guard with BYTE_MODEL 8-} */
+/* (btw, those nibble-addressable systems are way off, or so we assume) */
+
+dnl   /* have a look at "64bit and data size neutrality" at */
+dnl   /* http://unix.org/version2/whatsnew/login_64bit.html */
+dnl   /* (the shorthand "ILP" types always have a "P" part) */
+
+#if defined _STDINT_BYTE_MODEL
+#if _STDINT_LONG_MODEL+0 == 242
+/* 2:4:2 =  IP16 = a normal 16-bit system                */
+typedef unsigned char   uint8_t;
+typedef unsigned short  uint16_t;
+typedef unsigned long   uint32_t;
+#ifndef __int8_t_defined
+#define __int8_t_defined
+typedef          char    int8_t;
+typedef          short   int16_t;
+typedef          long    int32_t;
+#endif
+#elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL == 444
+/* 2:4:4 =  LP32 = a 32-bit system derived from a 16-bit */
+/* 4:4:4 = ILP32 = a normal 32-bit system                */
+typedef unsigned char   uint8_t;
+typedef unsigned short  uint16_t;
+typedef unsigned int    uint32_t;
+#ifndef __int8_t_defined
+#define __int8_t_defined
+typedef          char    int8_t;
+typedef          short   int16_t;
+typedef          int     int32_t;
+#endif
+#elif _STDINT_LONG_MODEL+0 == 484 || _STDINT_LONG_MODEL+0 == 488
+/* 4:8:4 =  IP32 = a 32-bit system prepared for 64-bit    */
+/* 4:8:8 =  LP64 = a normal 64-bit system                 */
+typedef unsigned char   uint8_t;
+typedef unsigned short  uint16_t;
+typedef unsigned int    uint32_t;
+#ifndef __int8_t_defined
+#define __int8_t_defined
+typedef          char    int8_t;
+typedef          short   int16_t;
+typedef          int     int32_t;
+#endif
+/* this system has a "long" of 64bit */
+#ifndef _HAVE_UINT64_T
+#define _HAVE_UINT64_T
+typedef unsigned long   uint64_t;
+typedef          long    int64_t;
+#endif
+#elif _STDINT_LONG_MODEL+0 == 448
+/*      LLP64   a 64-bit system derived from a 32-bit system */
+typedef unsigned char   uint8_t;
+typedef unsigned short  uint16_t;
+typedef unsigned int    uint32_t;
+#ifndef __int8_t_defined
+#define __int8_t_defined
+typedef          char    int8_t;
+typedef          short   int16_t;
+typedef          int     int32_t;
+#endif
+/* assuming the system has a "long long" */
+#ifndef _HAVE_UINT64_T
+#define _HAVE_UINT64_T
+typedef unsigned long long uint64_t;
+typedef          long long  int64_t;
+#endif
+#else
+#define _STDINT_NO_INT32_T
+#endif
+#else
+#define _STDINT_NO_INT8_T
+#define _STDINT_NO_INT32_T
+#endif
+#endif
+
+/*
+ * quote from SunOS-5.8 sys/inttypes.h:
+ * Use at your own risk.  As of February 1996, the committee is squarely
+ * behind the fixed sized types; the "least" and "fast" types are
still being
+ * discussed.  The probability that the "fast" types may be removed before
+ * the standard is finalized is high enough that they are not currently
+ * implemented.
+ */
+
+#if defined _STDINT_NEED_INT_LEAST_T
+typedef  int8_t    int_least8_t;
+typedef  int16_t   int_least16_t;
+typedef  int32_t   int_least32_t;
+#ifdef _HAVE_UINT64_T
+typedef  int64_t   int_least64_t;
+#endif
+
+typedef uint8_t   uint_least8_t;
+typedef uint16_t  uint_least16_t;
+typedef uint32_t  uint_least32_t;
+#ifdef _HAVE_UINT64_T
+typedef uint64_t  uint_least64_t;
+#endif
+  /* least types */
+#endif
+
+#if defined _STDINT_NEED_INT_FAST_T
+typedef  int8_t    int_fast8_t; 
+typedef  int       int_fast16_t;
+typedef  int32_t   int_fast32_t;
+#ifdef _HAVE_UINT64_T
+typedef  int64_t   int_fast64_t;
+#endif
+
+typedef uint8_t   uint_fast8_t; 
+typedef unsigned  uint_fast16_t;
+typedef uint32_t  uint_fast32_t;
+#ifdef _HAVE_UINT64_T
+typedef uint64_t  uint_fast64_t;
+#endif
+  /* fast types */
+#endif
+
+#ifdef _STDINT_NEED_INTMAX_T
+#ifdef _HAVE_UINT64_T
+typedef  int64_t       intmax_t;
+typedef uint64_t      uintmax_t;
+#else
+typedef          long  intmax_t;
+typedef unsigned long uintmax_t;
+#endif
+#endif
+
+#ifdef _STDINT_NEED_INTPTR_T
+#ifndef __intptr_t_defined
+#define __intptr_t_defined
+/* we encourage using "long" to store pointer values, never use "int"
! */
+#if   _STDINT_LONG_MODEL+0 == 242 || _STDINT_LONG_MODEL+0 == 484
+typedef  unsinged int   uintptr_t;
+typedef           int    intptr_t;
+#elif _STDINT_LONG_MODEL+0 == 244 || _STDINT_LONG_MODEL+0 == 444
+typedef  unsigned long  uintptr_t;
+typedef           long   intptr_t;
+#elif _STDINT_LONG_MODEL+0 == 448 && defined _HAVE_UINT64_T
+typedef        uint64_t uintptr_t;
+typedef         int64_t  intptr_t;
+#else /* matches typical system types ILP32 and LP64 - but not IP16 or LLP64 */
+typedef  unsigned long  uintptr_t;
+typedef           long   intptr_t;
+#endif
+#endif
+#endif
+
+  /* shortcircuit*/
+#endif
+  /* once */
+#endif
+#endif
+STDINT_EOF
+    if cmp -s $ac_stdint_h $ac_stdint 2>/dev/null; then
+      AC_MSG_NOTICE([$ac_stdint_h is unchanged])
+    else
+      ac_dir=`AS_DIRNAME(["$ac_stdint_h"])`
+      AS_MKDIR_P(["$ac_dir"])
+      rm -f $ac_stdint_h
+      mv $ac_stdint $ac_stdint_h
+    fi
+],[# variables for create stdint.h replacement
+PACKAGE="$PACKAGE"
+VERSION="$VERSION"
+ac_stdint_h="$ac_stdint_h"
+_ac_stdint_h=AS_TR_CPP(_$PACKAGE-$ac_stdint_h)
+ac_cv_stdint_message="$ac_cv_stdint_message"
+ac_cv_header_stdint_t="$ac_cv_header_stdint_t"
+ac_cv_header_stdint_x="$ac_cv_header_stdint_x"
+ac_cv_header_stdint_o="$ac_cv_header_stdint_o"
+ac_cv_header_stdint_u="$ac_cv_header_stdint_u"
+ac_cv_type_uint64_t="$ac_cv_type_uint64_t"
+ac_cv_type_u_int64_t="$ac_cv_type_u_int64_t"
+ac_cv_stdint_char_model="$ac_cv_stdint_char_model"
+ac_cv_stdint_long_model="$ac_cv_stdint_long_model"
+ac_cv_type_int_least32_t="$ac_cv_type_int_least32_t"
+ac_cv_type_int_fast32_t="$ac_cv_type_int_fast32_t"
+ac_cv_type_intmax_t="$ac_cv_type_intmax_t"
+])
+])
Index: argp-namefrob.h
--- argp-namefrob.h	(revision 0)
+++ argp-namefrob.h	(revision 0)
@@ -0,0 +1,96 @@
+/* Name frobnication for compiling argp outside of glibc
+   Copyright (C) 1997 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+#if !_LIBC
+/* This code is written for inclusion in gnu-libc, and uses names in the
+   namespace reserved for libc.  If we're not compiling in libc, define those
+   names to be the normal ones instead.  */
+
+/* argp-parse functions */
+#undef __argp_parse
+#define __argp_parse argp_parse
+#undef __option_is_end
+#define __option_is_end _option_is_end
+#undef __option_is_short
+#define __option_is_short _option_is_short
+#undef __argp_input
+#define __argp_input _argp_input
+
+/* argp-help functions */
+#undef __argp_help
+#define __argp_help argp_help
+#undef __argp_error
+#define __argp_error argp_error
+#undef __argp_failure
+#define __argp_failure argp_failure
+#undef __argp_state_help
+#define __argp_state_help argp_state_help
+#undef __argp_usage
+#define __argp_usage argp_usage
+#undef __argp_basename
+#define __argp_basename _argp_basename
+#undef __argp_short_program_name
+#define __argp_short_program_name _argp_short_program_name
+
+/* argp-fmtstream functions */
+#undef __argp_make_fmtstream
+#define __argp_make_fmtstream argp_make_fmtstream
+#undef __argp_fmtstream_free
+#define __argp_fmtstream_free argp_fmtstream_free
+#undef __argp_fmtstream_putc
+#define __argp_fmtstream_putc argp_fmtstream_putc
+#undef __argp_fmtstream_puts
+#define __argp_fmtstream_puts argp_fmtstream_puts
+#undef __argp_fmtstream_write
+#define __argp_fmtstream_write argp_fmtstream_write
+#undef __argp_fmtstream_printf
+#define __argp_fmtstream_printf argp_fmtstream_printf
+#undef __argp_fmtstream_set_lmargin
+#define __argp_fmtstream_set_lmargin argp_fmtstream_set_lmargin
+#undef __argp_fmtstream_set_rmargin
+#define __argp_fmtstream_set_rmargin argp_fmtstream_set_rmargin
+#undef __argp_fmtstream_set_wmargin
+#define __argp_fmtstream_set_wmargin argp_fmtstream_set_wmargin
+#undef __argp_fmtstream_point
+#define __argp_fmtstream_point argp_fmtstream_point
+#undef __argp_fmtstream_update
+#define __argp_fmtstream_update _argp_fmtstream_update
+#undef __argp_fmtstream_ensure
+#define __argp_fmtstream_ensure _argp_fmtstream_ensure
+#undef __argp_fmtstream_lmargin
+#define __argp_fmtstream_lmargin argp_fmtstream_lmargin
+#undef __argp_fmtstream_rmargin
+#define __argp_fmtstream_rmargin argp_fmtstream_rmargin
+#undef __argp_fmtstream_wmargin
+#define __argp_fmtstream_wmargin argp_fmtstream_wmargin
+
+/* normal libc functions we call */
+#undef __sleep
+#define __sleep sleep
+#undef __strcasecmp
+#define __strcasecmp strcasecmp
+#undef __vsnprintf
+#define __vsnprintf vsnprintf
+
+#endif /* !_LIBC */
+
+#ifndef __set_errno
+#define __set_errno(e) (errno = (e))
+#endif
Index: Versions
--- Versions	(revision 0)
+++ Versions	(revision 0)
@@ -0,0 +1,14 @@
+libc {
+  GLIBC_2.1 {
+    # variables in normal name space
+    argp_err_exit_status; argp_program_bug_address; argp_program_version;
+    argp_program_version_hook;
+
+    # a*
+    argp_error; argp_failure; argp_help; argp_parse; argp_state_help;
+    argp_usage;
+
+    # kludge for recursive argp callers that know the magic.
+    _argp_unlock_xxx;
+  }
+}
Index: Makefile.am
--- Makefile.am	(revision 0)
+++ Makefile.am	(revision 0)
@@ -0,0 +1,38 @@
+# From glibc
+
+# Copyright (C) 1997, 2003, 2004 Free Software Foundation, Inc.
+# This file is part of the GNU C Library.
+
+# The GNU C Library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Library General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+
+# The GNU C Library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Library General Public License for more details.
+
+# You should have received a copy of the GNU Library General Public
+# License along with the GNU C Library; see the file COPYING.LIB.  If
+# not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+
+AUTOMAKE_OPTIONS = foreign
+SUBDIRS = . testsuite
+ACLOCAL_AMFLAGS = -I ../build-aux
+
+noinst_LTLIBRARIES = libargp.la
+noinst_PROGRAMS = argp-test
+noinst_HEADERS = argp.h argp-fmtstream.h argp-namefrob.h # argp-comp.h
+
+EXTRA_DIST = mempcpy.c strchrnul.c strndup.c Versions
+
+# Leaves out argp-fs-xinl.c and argp-xinl.c
+libargp_la_SOURCES = argp-ba.c argp-eexst.c argp-fmtstream.c \
+		     argp-help.c argp-parse.c argp-pv.c \
+		     argp-pvh.c
+
+libargp_la_LIBADD = $(LTLIBOBJS)
+
+argp_test_LDADD = libargp.la
Index: argp-fmtstream.c
--- argp-fmtstream.c	(revision 0)
+++ argp-fmtstream.c	(revision 0)
@@ -0,0 +1,475 @@
+/* Word-wrapping and line-truncating streams
+   Copyright (C) 1997, 1998, 1999, 2001 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Written by Miles Bader &lt;miles(a)gnu.ai.mit.edu&gt;du>.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Library General Public License as
+   published by the Free Software Foundation; either version 2 of the
+   License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library General Public
+   License along with the GNU C Library; see the file COPYING.LIB.  If not,
+   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+   Boston, MA 02111-1307, USA.  */
+
+/* This package emulates glibc `line_wrap_stream' semantics for systems that
+   don't have that.  */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <stdarg.h>
+#include <ctype.h>
+
+#include "argp-fmtstream.h"
+#include "argp-namefrob.h"
+
+#ifndef ARGP_FMTSTREAM_USE_LINEWRAP
+
+#ifndef isblank
+#define isblank(ch) ((ch)==' ' || (ch)=='\t')
+#endif
+
+#if defined _LIBC && defined USE_IN_LIBIO
+# include <libio/libioP.h>
+# define __vsnprintf(s, l, f, a) _IO_vsnprintf (s, l, f, a)
+#endif
+
+#define INIT_BUF_SIZE 200
+#define PRINTF_SIZE_GUESS 150
+
+/* Return an argp_fmtstream that outputs to STREAM, and which prefixes lines
+   written on it with LMARGIN spaces and limits them to RMARGIN columns
+   total.  If WMARGIN >= 0, words that extend past RMARGIN are wrapped by
+   replacing the whitespace before them with a newline and WMARGIN spaces.
+   Otherwise, chars beyond RMARGIN are simply dropped until a newline.
+   Returns NULL if there was an error.  */
+argp_fmtstream_t
+__argp_make_fmtstream (FILE *stream,
+		       size_t lmargin, size_t rmargin, ssize_t wmargin)
+{
+  argp_fmtstream_t fs = malloc (sizeof (struct argp_fmtstream));
+  if (fs)
+    {
+      fs->stream = stream;
+
+      fs->lmargin = lmargin;
+      fs->rmargin = rmargin;
+      fs->wmargin = wmargin;
+      fs->point_col = 0;
+      fs->point_offs = 0;
+
+      fs->buf = malloc (INIT_BUF_SIZE);
+      if (! fs->buf)
+	{
+	  free (fs);
+	  fs = 0;
+	}
+      else
+	{
+	  fs->p = fs->buf;
+	  fs->end = fs->buf + INIT_BUF_SIZE;
+	}
+    }
+
+  return fs;
+}
+#ifdef weak_alias
+weak_alias (__argp_make_fmtstream, argp_make_fmtstream)
+#endif
+
+/* Flush FS to its stream, and free it (but don't close the stream).  */
+void
+__argp_fmtstream_free (argp_fmtstream_t fs)
+{
+  __argp_fmtstream_update (fs);
+  if (fs->p > fs->buf)
+    FWRITE_UNLOCKED (fs->buf, 1, fs->p - fs->buf, fs->stream);
+  free (fs->buf);
+  free (fs);
+}
+#ifdef weak_alias
+weak_alias (__argp_fmtstream_free, argp_fmtstream_free)
+#endif
+
+/* Process FS's buffer so that line wrapping is done from POINT_OFFS to the
+   end of its buffer.  This code is mostly from glibc stdio/linewrap.c.  */
+void
+__argp_fmtstream_update (argp_fmtstream_t fs)
+{
+  char *buf, *nl;
+  size_t len;
+
+  /* Scan the buffer for newlines.  */
+  buf = fs->buf + fs->point_offs;
+  while (buf < fs->p)
+    {
+      size_t r;
+
+      if (fs->point_col == 0 && fs->lmargin != 0)
+	{
+	  /* We are starting a new line.  Print spaces to the left margin.  */
+	  const size_t pad = fs->lmargin;
+	  if (fs->p + pad < fs->end)
+	    {
+	      /* We can fit in them in the buffer by moving the
+		 buffer text up and filling in the beginning.  */
+	      memmove (buf + pad, buf, fs->p - buf);
+	      fs->p += pad; /* Compensate for bigger buffer. */
+	      memset (buf, ' ', pad); /* Fill in the spaces.  */
+	      buf += pad; /* Don't bother searching them.  */
+	    }
+	  else
+	    {
+	      /* No buffer space for spaces.  Must flush.  */
+	      size_t i;
+	      for (i = 0; i < pad; i++)
+		PUTC_UNLOCKED (' ', fs->stream);
+	    }
+	  fs->point_col = pad;
+	}
+
+      len = fs->p - buf;
+      nl = memchr (buf, '\n', len);
+
+      if (fs->point_col < 0)
+	fs->point_col = 0;
+
+      if (!nl)
+	{
+	  /* The buffer ends in a partial line.  */
+
+	  if (fs->point_col + len < fs->rmargin)
+	    {
+	      /* The remaining buffer text is a partial line and fits
+		 within the maximum line width.  Advance point for the
+		 characters to be written and stop scanning.  */
+	      fs->point_col += len;
+	      break;
+	    }
+	  else
+	    /* Set the end-of-line pointer for the code below to
+	       the end of the buffer.  */
+	    nl = fs->p;
+	}
+      else if (fs->point_col + (nl - buf) < (ssize_t) fs->rmargin)
+	{
+	  /* The buffer contains a full line that fits within the maximum
+	     line width.  Reset point and scan the next line.  */
+	  fs->point_col = 0;
+	  buf = nl + 1;
+	  continue;
+	}
+
+      /* This line is too long.  */
+      r = fs->rmargin - 1;
+
+      if (fs->wmargin < 0)
+	{
+	  /* Truncate the line by overwriting the excess with the
+	     newline and anything after it in the buffer.  */
+	  if (nl < fs->p)
+	    {
+	      memmove (buf + (r - fs->point_col), nl, fs->p - nl);
+	      fs->p -= buf + (r - fs->point_col) - nl;
+	      /* Reset point for the next line and start scanning it.  */
+	      fs->point_col = 0;
+	      buf += r + 1; /* Skip full line plus \n. */
+	    }
+	  else
+	    {
+	      /* The buffer ends with a partial line that is beyond the
+		 maximum line width.  Advance point for the characters
+		 written, and discard those past the max from the buffer.  */
+	      fs->point_col += len;
+	      fs->p -= fs->point_col - r;
+	      break;
+	    }
+	}
+      else
+	{
+	  /* Do word wrap.  Go to the column just past the maximum line
+	     width and scan back for the beginning of the word there.
+	     Then insert a line break.  */
+
+	  char *p, *nextline;
+	  int i;
+
+	  p = buf + (r + 1 - fs->point_col);
+	  while (p >= buf && !isblank (*p))
+	    --p;
+	  nextline = p + 1;	/* This will begin the next line.  */
+
+	  if (nextline > buf)
+	    {
+	      /* Swallow separating blanks.  */
+	      if (p >= buf)
+		do
+		  --p;
+		while (p >= buf && isblank (*p));
+	      nl = p + 1;	/* The newline will replace the first blank. */
+	    }
+	  else
+	    {
+	      /* A single word that is greater than the maximum line width.
+		 Oh well.  Put it on an overlong line by itself.  */
+	      p = buf + (r + 1 - fs->point_col);
+	      /* Find the end of the long word.  */
+	      do
+		++p;
+	      while (p < nl && !isblank (*p));
+	      if (p == nl)
+		{
+		  /* It already ends a line.  No fussing required.  */
+		  fs->point_col = 0;
+		  buf = nl + 1;
+		  continue;
+		}
+	      /* We will move the newline to replace the first blank.  */
+	      nl = p;
+	      /* Swallow separating blanks.  */
+	      do
+		++p;
+	      while (isblank (*p));
+	      /* The next line will start here.  */
+	      nextline = p;
+	    }
+
+	  /* Note: There are a bunch of tests below for
+	     NEXTLINE == BUF + LEN + 1; this case is where NL happens to fall
+	     at the end of the buffer, and NEXTLINE is in fact empty (and so
+	     we need not be careful to maintain its contents).  */
+
+	  if (nextline == buf + len + 1
+	      ? fs->end - nl < fs->wmargin + 1
+	      : nextline - (nl + 1) < fs->wmargin)
+	    {
+	      /* The margin needs more blanks than we removed.  */
+	      if (fs->end - fs->p > fs->wmargin + 1)
+		/* Make some space for them.  */
+		{
+		  size_t mv = fs->p - nextline;
+		  memmove (nl + 1 + fs->wmargin, nextline, mv);
+		  nextline = nl + 1 + fs->wmargin;
+		  len = nextline + mv - buf;
+		  *nl++ = '\n';
+		}
+	      else
+		/* Output the first line so we can use the space.  */
+		{
+		  if (nl > fs->buf)
+		    FWRITE_UNLOCKED (fs->buf, 1, nl - fs->buf, fs->stream);
+		  PUTC_UNLOCKED ('\n', fs->stream);
+		  len += buf - fs->buf;
+		  nl = buf = fs->buf;
+		}
+	    }
+	  else
+	    /* We can fit the newline and blanks in before
+	       the next word.  */
+	    *nl++ = '\n';
+
+	  if (nextline - nl >= fs->wmargin
+	      || (nextline == buf + len + 1 && fs->end - nextline >=
fs->wmargin))
+	    /* Add blanks up to the wrap margin column.  */
+	    for (i = 0; i < fs->wmargin; ++i)
+	      *nl++ = ' ';
+	  else
+	    for (i = 0; i < fs->wmargin; ++i)
+	      PUTC_UNLOCKED (' ', fs->stream);
+
+	  /* Copy the tail of the original buffer into the current buffer
+	     position.  */
+	  if (nl < nextline)
+	    memmove (nl, nextline, buf + len - nextline);
+	  len -= nextline - buf;
+
+	  /* Continue the scan on the remaining lines in the buffer.  */
+	  buf = nl;
+
+	  /* Restore bufp to include all the remaining text.  */
+	  fs->p = nl + len;
+
+	  /* Reset the counter of what has been output this line.  If wmargin
+	     is 0, we want to avoid the lmargin getting added, so we set
+	     point_col to a magic value of -1 in that case.  */
+	  fs->point_col = fs->wmargin ? fs->wmargin : -1;
+	}
+    }
+
+  /* Remember that we've scanned as far as the end of the buffer.  */
+  fs->point_offs = fs->p - fs->buf;
+}
+
+/* Ensure that FS has space for AMOUNT more bytes in its buffer, either by
+   growing the buffer, or by flushing it.  True is returned iff we succeed. */
+int
+__argp_fmtstream_ensure (struct argp_fmtstream *fs, size_t amount)
+{
+  if ((size_t) (fs->end - fs->p) < amount)
+    {
+      ssize_t wrote;
+
+      /* Flush FS's buffer.  */
+      __argp_fmtstream_update (fs);
+
+      wrote = FWRITE_UNLOCKED (fs->buf, 1, fs->p - fs->buf, fs->stream);
+      if (wrote == fs->p - fs->buf)
+	{
+	  fs->p = fs->buf;
+	  fs->point_offs = 0;
+	}
+      else
+	{
+	  fs->p -= wrote;
+	  fs->point_offs -= wrote;
+	  memmove (fs->buf, fs->buf + wrote, fs->p - fs->buf);
+	  return 0;
+	}
+
+      if ((size_t) (fs->end - fs->buf) < amount)
+	/* Gotta grow the buffer.  */
+	{
+	  size_t new_size = fs->end - fs->buf + amount;
+	  char *new_buf = realloc (fs->buf, new_size);
+
+	  if (! new_buf)
+	    {
+	      __set_errno (ENOMEM);
+	      return 0;
+	    }
+
+	  fs->buf = new_buf;
+	  fs->end = new_buf + new_size;
+	  fs->p = fs->buf;
+	}
+    }
+
+  return 1;
+}
+
+ssize_t
+__argp_fmtstream_printf (struct argp_fmtstream *fs, const char *fmt, ...)
+{
+  size_t out;
+  size_t avail;
+  size_t size_guess = PRINTF_SIZE_GUESS; /* How much space to reserve. */
+
+  do
+    {
+      va_list args;
+
+      if (! __argp_fmtstream_ensure (fs, size_guess))
+	return -1;
+
+      va_start (args, fmt);
+      avail = fs->end - fs->p;
+      out = __vsnprintf (fs->p, avail, fmt, args);
+      va_end (args);
+      if (out >= avail)
+	size_guess = out + 1;
+    }
+  while (out >= avail);
+
+  fs->p += out;
+
+  return out;
+}
+#ifdef weak_alias
+weak_alias (__argp_fmtstream_printf, argp_fmtstream_printf)
+#endif
+
+/* Duplicate the inline definitions in argp-fmtstream.h, for compilers
+ * that don't do inlining. */
+size_t
+__argp_fmtstream_write (argp_fmtstream_t __fs,
+			__const char *__str, size_t __len)
+{
+  if (__fs->p + __len <= __fs->end || __argp_fmtstream_ensure (__fs, __len))
+    {
+      memcpy (__fs->p, __str, __len);
+      __fs->p += __len;
+      return __len;
+    }
+  else
+    return 0;
+}
+
+int
+__argp_fmtstream_puts (argp_fmtstream_t __fs, __const char *__str)
+{
+  size_t __len = strlen (__str);
+  if (__len)
+    {
+      size_t __wrote = __argp_fmtstream_write (__fs, __str, __len);
+      return __wrote == __len ? 0 : -1;
+    }
+  else
+    return 0;
+}
+
+int
+__argp_fmtstream_putc (argp_fmtstream_t __fs, int __ch)
+{
+  if (__fs->p < __fs->end || __argp_fmtstream_ensure (__fs, 1))
+    return *__fs->p++ = __ch;
+  else
+    return EOF;
+}
+
+/* Set __FS's left margin to __LMARGIN and return the old value.  */
+size_t
+__argp_fmtstream_set_lmargin (argp_fmtstream_t __fs, size_t __lmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->lmargin;
+  __fs->lmargin = __lmargin;
+  return __old;
+}
+
+/* Set __FS's right margin to __RMARGIN and return the old value.  */
+size_t
+__argp_fmtstream_set_rmargin (argp_fmtstream_t __fs, size_t __rmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->rmargin;
+  __fs->rmargin = __rmargin;
+  return __old;
+}
+
+/* Set FS's wrap margin to __WMARGIN and return the old value.  */
+size_t
+__argp_fmtstream_set_wmargin (argp_fmtstream_t __fs, size_t __wmargin)
+{
+  size_t __old;
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  __old = __fs->wmargin;
+  __fs->wmargin = __wmargin;
+  return __old;
+}
+
+/* Return the column number of the current output point in __FS.  */
+size_t
+__argp_fmtstream_point (argp_fmtstream_t __fs)
+{
+  if ((size_t) (__fs->p - __fs->buf) > __fs->point_offs)
+    __argp_fmtstream_update (__fs);
+  return __fs->point_col >= 0 ? __fs->point_col : 0;
+}
+
+#endif /* !ARGP_FMTSTREAM_USE_LINEWRAP */


    

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[Projects] 2: Original creation of argp/.