Move to gawk-3.1.1.gawk-3.1.1

4 files changed, 1363 insertions, 1143 deletions

diff --git a/missing_d/ChangeLog b/missing_d/ChangeLog
new file mode 100644
index 00000000..7220065c
--- /dev/null
+++ b/missing_d/ChangeLog
@@ -0,0 +1,15 @@
+Wed May  1 16:41:32 2002  Arnold D. Robbins  <arnold@skeeve.com>
+
+	* Release 3.1.1: Release tar file made.
+
+Tue Dec  4 17:56:46 2001  Arnold D. Robbins  <arnold@skeeve.com>
+
+	* strftime.c: Replaced with glibc version.
+	* strftime.3: Removed
+
+Fri Aug  3 09:01:19 2001  Arnold D. Robbins  <arnold@skeeve.com>
+
+	ChangeLog created.
+
+	* strtod.c (strtod): Fixed test at end for failure to
+	  be a little smarter.
diff --git a/missing_d/strftime.3 b/missing_d/strftime.3
deleted file mode 100644
index b017bf45..00000000
--- a/missing_d/strftime.3
+++ /dev/null
@@ -1,359 +0,0 @@
-.TH STRFTIME 3
-.SH NAME
-strftime \- generate formatted time information
-.SH SYNOPSIS
-.ft B
-.nf
-#include <sys/types.h>
-#include <time.h>
-.sp
-size_t strftime(char *s, size_t maxsize, const char *format,
-	const struct tm *timeptr);
-.fi
-.SH DESCRIPTION
-The following description is transcribed verbatim from the January 18, 1999
-draft standard for ISO C.
-This draft is essentially identical in technical content
-to the final version of the standard.
-.LP
-``The
-.B strftime
-function places characters into the array pointed to by
-.B s
-as controlled by the string pointed to by
-.BR format .
-The format shall be a multibyte character sequence, beginning and ending in
-its initial shift state.
-The
-.B format
-string consists of zero or more conversion specifiers and ordinary
-multibyte characters.  A conversion specifier consists of a
-.B %
-character, possibly followed by an
-.B E
-or
-.B O
-modifier character (described below),
-followed by a character that determines the behavior of the
-conversion specifier.
-All ordinary multibyte characters (including the terminating null
-character) are copied unchanged into the array.
-If copying takes place between objects that overlap the behavior is undefined.
-No more than
-.B maxsize
-characters are placed into the array.
-.PP
-``Each conversion specifier is replaced by appropriate characters as described
-in the following list.
-The appropriate characters are determined by the
-.B LC_TIME
-category of the current locale and by the values
-of zero or more members of the broken-down time
-structure pointed to by
-.BR timeptr ,
-as specified by brackets in the description.
-If any of the specified values is outside the normal range, the characters
-stored are unspecified.''
-.TP
-.B %a
-is replaced by the locale's abbreviated weekday name.
-.TP
-.B %A
-is replaced by the locale's full weekday name.
-.TP
-.B %b
-is replaced by the locale's abbreviated month name.
-.TP
-.B %B
-is replaced by the locale's full month name.
-.TP
-.B %c
-is replaced by the locale's appropriate date and time representation.
-(This is
-.B "%A %B %d %T %Y"
-in the \fB"C"\fR
-locale.)
-.TP
-.B %C
-is replaced by the year divided by 100 and truncated to an integer,
-as a decimal number
-.RB ( 00 - 99 ).
-.TP
-.B %d
-is replaced by the day of the month as a decimal number
-.RB ( 01 - 31 ).
-.TP
-.B %D
-is equivalent to
-.BR %m/%d/%y .
-.TP
-.B %e
-is replaced by the day of the month as a decimal number
-.RB ( 1 - 31 );
-a single digit is preceded by a space.
-.TP
-.B %F
-is equivalent to
-.B %Y\-%m\-%d
-(the ISO 8601 date format).
-.TP
-.B %g
-is replaced by the year without century of the ISO week number
-as a decimal number
-.RB ( 00 - 99 ).
-.TP
-.B %G
-is replaced by the year with century of the ISO week number
-as a decimal number.
-.TP
-.B %h
-is equivalent to
-.BR %b .
-.TP
-.B %H
-is replaced by the hour (24-hour clock) as a decimal number
-.RB ( 00 - 23 ).
-.TP
-.B %I
-is replaced by the hour (12-hour clock) as a decimal number
-.RB ( 01 - 12 ).
-.TP
-.B %j
-is replaced by the day of the year as a decimal number
-.RB ( 001 - 366 ).
-.TP
-.B %m
-is replaced by the month as a decimal number
-.RB ( 01 - 12 ).
-.TP
-.B %M
-is replaced by the minute as a decimal number
-.RB ( 00 - 59 ).
-.TP
-.B %n
-is replaced with a newline character (\s-1ASCII LF\s+1).
-.TP
-.B %p
-is replaced by the locale's equivalent of the AM/PM designations associated
-with a 12-hour clock.
-.TP
-.B %r
-is replaced by the locale's 12-hour clock time.
-(This is
-.B "%I:%M:%S %p"
-in the \fB"C"\fR
-locale.)
-.TP
-.B %R
-is equivalent to
-.BR %H:%M .
-.TP
-.B %S
-is replaced by the second as a decimal number
-.RB ( 00 - 60 ).
-.TP
-.B %t
-is replaced with a \s-1TAB\s+1 character.
-.TP
-.B %T
-is equivalent to
-.BR %H:%M:%S .
-.TP
-.B %u
-is replaced by the ISO 8601 weekday as a decimal number
-.RB [ "1 " (Monday)- 7 ].
-.TP
-.B %U
-is replaced by the week number of the year (the first Sunday as the first
-day of week 1) as a decimal number
-.RB ( 00 - 53 ).
-.TP
-.B %V
-is replaced by the ISO 8601 week number of the year (the first Monday as the first
-day of week 1) as a decimal number
-.RB ( 01 - 53 ).
-.TP
-.B %w
-is replaced by the weekday as a decimal number
-.RB [ "0 " (Sunday)- 6 ].
-.TP
-.B %W
-is replaced by the week number of the year (the first Monday as the first
-day of week 1) as a decimal number
-.RB ( 00 - 53 ).
-.TP
-.B %x
-is replaced by the locale's appropriate date representation.
-(This is
-.B "%A %B %d %Y"
-in the \fB"C"\fR
-locale.)
-.TP
-.B %X
-is replaced by the locale's appropriate time representation.
-(This is
-.B "%T"
-in the \fB"C"\fR
-locale.)
-.TP
-.B %y
-is replaced by the year without century as a decimal number
-.RB ( 00 - 99 ).
-.TP
-.B %Y
-is replaced by the year with century as a decimal number.
-.TP
-.B %z
-The timezone offset in a +HHMM format (e.g. the format necessary to
-produce RFC-822/RFC-1036 date headers).
-.TP
-.B %Z
-is replaced by the time zone name or abbreviation, or by no characters if
-no time zone is determinable.
-.TP
-.B %%
-is replaced by
-.BR % .
-.LP
-If a conversion specifier is not one of the above, the behavior is
-undefined.
-.SH RETURNS
-If the total number of resulting characters including the terminating null
-character is not more than
-.BR maxsize ,
-the
-.B strftime
-function returns the number of characters placed into the array pointed to
-by
-.B s
-not including the terminating null character.
-Otherwise, zero is returned and the contents of the array are indeterminate.
-.SH ISO 8601
-The method for determining the week number as specified by ISO 8601 is:
-if the week containing January 1 has four or more days in the
-new year, then it is week 1, otherwise it is the highest numbered
-week of the previous year (52 or 53)
-and the next week is week 1.
-All days in a new year preceding the first Monday are considered to be
-in week 0.
-.PP
-For example, January 1, 1993, is in week 53 of 1992. Thus, the year
-of its ISO week number is 1992, even though its year is 1993.
-Similarly, December 31, 1973, is in week 1 of 1974. Thus, the year
-of its ISO week number is 1974, even though its year is 1973.
-.SH ALTERNATE REPRESENTATIONS
-The alternate representations
-.BR %Ec ,
-.BR %EC ,
-.BR %Ex ,
-.BR %EX ,
-.BR %Ey ,
-.BR %EY ,
-.BR %Od ,
-.BR %Oe ,
-.BR %OH ,
-.BR %OI ,
-.BR %Om ,
-.BR %OM ,
-.BR %OS ,
-.BR %Ou ,
-.BR %OU ,
-.BR %OV ,
-.BR %Ow ,
-.BR %OW ,
-and
-.B %Oy
-are recognized, but their normal representations are used.
-.SH NON-ISO EXTENSIONS
-.SS SunOS Extensions
-If
-.B SUNOS_EXT
-is defined when the routine is compiled, then the following additional
-conversions will be available.
-These are borrowed from the SunOS version of
-.IR strftime .
-.TP
-.B %k
-is replaced by the hour (24-hour clock) as a decimal number
-.RB ( 0 - 23 ).
-Single digit numbers are padded with a blank.
-.TP
-.B %l
-is replaced by the hour (12-hour clock) as a decimal number
-.RB ( 1 - 12 ).
-Single digit numbers are padded with a blank.
-.SS HP/UX Extensions
-If
-.B HPUX_EXT
-is defined when the routine is compiled, then the following additional
-conversions will be available.
-These are borrowed from the HP-UX version of
-.IR date .
-.TP
-.B %N
-The ``Emporer/Era'' name.
-Typically, this is equivalent to the century
-(same as
-.B %C ).
-.TP
-.B %o
-The ``Emporer/Era'' year.
-Typically, this is equivalent to the year
-(same as
-.B %y ).
-.SS VMS Extensions
-If
-.B VMS_EXT
-is defined, then the following additional conversion is available:
-.TP
-.B %v
-The date in VMS format (e.g. 20-JUN-1991).
-.SS Other Extensions
-If
-.B HAVE_MKTIME
-is defined, then this conversion is available:
-.TP
-.B %s
-The time in ``seconds since the Epoch,''
-usually Midnight January 1, 1970, UTC.
-.SH SEE ALSO
-.IR time (2),
-.IR ctime (3),
-.IR localtime (3),
-.IR mktime (3),
-.IR tzset (3)
-.SH BUGS
-This version does not handle multibyte characters or pay attention to the
-setting of the
-.B LC_TIME
-environment variable.
-.LP
-The ``appropriate'' values used for
-.BR %c ,
-.BR %x ,
-are
-.B %X
-are always those specified by the 1999 ISO C standard for the \fB"C"\fR locale.
-.SH CAVEATS
-The pre-processor symbol
-.B POSIX_SEMANTICS
-is automatically defined, which forces the code to call
-.IR tzset (3)
-whenever the
-.B TZ
-environment variable has changed.
-If this routine will be used in an application that will not be changing
-.BR TZ ,
-then there may be some performance improvements by not defining
-.BR POSIX_SEMANTICS .
-.SH AUTHOR
-Arnold Robbins <arnold@skeeve.com>
-.SH ACKNOWLEDGEMENTS
-Thanks to Geoff Clare <gwc@root.co.uk> for helping debug earlier
-versions of this routine, and for advice about POSIX semantics.
-Additional thanks to Arthur David Olsen <ado@elsie.nci.nih.gov>
-for some code improvements.
-Thanks also to Tor Lillqvist <tml@tik.vtt.fi>
-for code fixes to the ISO 8601 code.
-Thanks to Hume Smith for pointing out a problem with the ISO 8601 code
-and to Arthur David Olsen for further discussions.
diff --git a/missing_d/strftime.c b/missing_d/strftime.c
index d291e8fd..18350461 100644
--- a/missing_d/strftime.c
+++ b/missing_d/strftime.c
@@ -1,850 +1,1411 @@
-/*
- * strftime.c
- *
- * Public-domain implementation of ISO C library routine.
- *
- * If you can't do prototypes, get GCC.
- *
- * The C99 standard now specifies just about all of the formats
- * that were additional in the earlier versions of this file.
- *
- * For extensions from SunOS, add SUNOS_EXT.
- * For extensions from HP/UX, add HPUX_EXT.
- * For VMS dates, add VMS_EXT.
- * For complete POSIX semantics, add POSIX_SEMANTICS.
- *
- * The code for %c, %x, and %X follows the C99 specification for
- * the "C" locale.
- *
- * This version ignores LOCALE information.
- * It also doesn't worry about multi-byte characters.
- * So there.
- *
- * This file is also shipped with GAWK (GNU Awk), gawk specific bits of
- * code are included if GAWK is defined.
- *
- * Arnold Robbins
- * January, February, March, 1991
- * Updated March, April 1992
- * Updated April, 1993
- * Updated February, 1994
- * Updated May, 1994
- * Updated January, 1995
- * Updated September, 1995
- * Updated January, 1996
- * Updated July, 1997
- * Updated October, 1999
- * Updated September, 2000
- *
- * Fixes from ado@elsie.nci.nih.gov,
- * February 1991, May 1992
- * Fixes from Tor Lillqvist tml@tik.vtt.fi,
- * May 1993
- * Further fixes from ado@elsie.nci.nih.gov,
- * February 1994
- * %z code from chip@chinacat.unicom.com,
- * Applied September 1995
- * %V code fixed (again) and %G, %g added,
- * January 1996
- * %v code fixed, better configuration,
- * July 1997
- * Moved to C99 specification.
- * September 2000
- */
-
-#ifndef GAWK
-#include <stdio.h>
+/* Copyright (C) 1991-1999, 2000, 2001 Free Software Foundation, Inc.
+
+   NOTE: The canonical source of this file is maintained with the GNU C Library.
+   Bugs can be reported to bug-glibc@prep.ai.mit.edu.
+
+   This program is free software; you can redistribute it and/or modify it
+   under the terms of the GNU General Public License as published by the
+   Free Software Foundation; either version 2, or (at your option) any
+   later version.
+
+   This program 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 General Public License
+   along with this program; 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
+
+#ifdef _LIBC
+# define HAVE_LIMITS_H 1
+# define HAVE_MBLEN 1
+# define HAVE_MBRLEN 1
+# define HAVE_STRUCT_ERA_ENTRY 1
+# define HAVE_TM_GMTOFF 1
+# define HAVE_TM_ZONE 1
+# define HAVE_TZNAME 1
+# define HAVE_TZSET 1
+# define MULTIBYTE_IS_FORMAT_SAFE 1
+# define STDC_HEADERS 1
+# include "../locale/localeinfo.h"
+#endif
+
+#if defined emacs && !defined HAVE_BCOPY
+# define HAVE_MEMCPY 1
+#endif
+
 #include <ctype.h>
-#include <time.h>
+#ifdef TIME_T_IN_SYS_TYPES_H
+#include <sys/types.h>		/* Some systems define `time_t' here.  */
+#endif /* HAVE_SYS_TYPES_H */
+
+#ifdef TIME_WITH_SYS_TIME
+# include <sys/time.h>
+# include <time.h>
+#else
+# ifdef HAVE_SYS_TIME_H
+#  include <sys/time.h>
+# else
+#  include <time.h>
+# endif
 #endif
-#if defined(TM_IN_SYS_TIME) || ! defined(GAWK)
-#include <sys/types.h>
-#include <sys/time.h>
+#if HAVE_TZNAME
+extern char *tzname[];
 #endif
 
-#include <stdlib.h>
-#include <string.h>
+/* Do multibyte processing if multibytes are supported, unless
+   multibyte sequences are safe in formats.  Multibyte sequences are
+   safe if they cannot contain byte sequences that look like format
+   conversion specifications.  The GNU C Library uses UTF8 multibyte
+   encoding, which is safe for formats, but strftime.c can be used
+   with other C libraries that use unsafe encodings.  */
+#define DO_MULTIBYTE (HAVE_MBLEN && ! MULTIBYTE_IS_FORMAT_SAFE)
+
+#if DO_MULTIBYTE
+# if HAVE_MBRLEN
+#  include <wchar.h>
+# else
+   /* Simulate mbrlen with mblen as best we can.  */
+#  define mbstate_t int
+#  define mbrlen(s, n, ps) mblen (s, n)
+#  define mbsinit(ps) (*(ps) == 0)
+# endif
+  static const mbstate_t mbstate_zero;
+#endif
 
-/* defaults: season to taste */
-#define SUNOS_EXT	1	/* stuff in SunOS strftime routine */
-#define VMS_EXT		1	/* include %v for VMS date format */
-#define HPUX_EXT	1	/* non-conflicting stuff in HP-UX date */
-#ifndef GAWK
-#define POSIX_SEMANTICS	1	/* call tzset() if TZ changes */
+#if HAVE_LIMITS_H
+# include <limits.h>
 #endif
 
-#undef strchr	/* avoid AIX weirdness */
+#if STDC_HEADERS
+# include <stddef.h>
+# include <stdlib.h>
+# include <string.h>
+#else
+# ifndef HAVE_MEMCPY
+#  define memcpy(d, s, n) bcopy ((s), (d), (n))
+# endif
+#endif
 
-extern void tzset(void);
-static int weeknumber(const struct tm *timeptr, int firstweekday);
-static int iso8601wknum(const struct tm *timeptr);
+#undef TOUPPER
+#undef TOLOWER
+#undef ISDIGIT
+#ifdef COMPILE_WIDE
+# include <endian.h>
+# define CHAR_T wchar_t
+# define UCHAR_T unsigned int
+# define L_(Str) L##Str
+# define NLW(Sym) _NL_W##Sym
+
+# define MEMCPY(d, s, n) __wmemcpy (d, s, n)
+# define STRLEN(s) __wcslen (s)
 
-#ifdef __GNUC__
-#define inline	__inline__
 #else
-#define inline	/**/
+# define CHAR_T char
+# define UCHAR_T unsigned char
+# define L_(Str) Str
+# define NLW(Sym) Sym
+
+# if !defined STDC_HEADERS && !defined HAVE_MEMCPY
+#  define MEMCPY(d, s, n) bcopy ((s), (d), (n))
+# else
+#  define MEMCPY(d, s, n) memcpy ((d), (s), (n))
+# endif
+# define STRLEN(s) strlen (s)
+
+# ifdef _LIBC
+#  define MEMPCPY(d, s, n) __mempcpy (d, s, n)
+# else
+#  ifndef HAVE_MEMPCPY
+#   define MEMPCPY(d, s, n) ((void *) ((char *) memcpy (d, s, n) + (n)))
+#  endif
+# endif
+#endif
+
+#ifndef __P
+# if defined __GNUC__ || (defined __STDC__ && __STDC__)
+#  define __P(args) args
+# else
+#  define __P(args) ()
+# endif  /* GCC.  */
+#endif  /* Not __P.  */
+
+#ifndef PTR
+# ifdef __STDC__
+#  define PTR void *
+# else
+#  define PTR char *
+# endif
+#endif
+
+#ifndef CHAR_BIT
+# define CHAR_BIT 8
+#endif
+
+#ifndef NULL
+# define NULL 0
 #endif
 
-#define range(low, item, hi)	max(low, min(item, hi))
+#define TYPE_SIGNED(t) ((t) -1 < 0)
+
+/* Bound on length of the string representing an integer value of type t.
+   Subtract one for the sign bit if t is signed;
+   302 / 1000 is log10 (2) rounded up;
+   add one for integer division truncation;
+   add one more for a minus sign if t is signed.  */
+#define INT_STRLEN_BOUND(t) \
+ ((sizeof (t) * CHAR_BIT - TYPE_SIGNED (t)) * 302 / 1000 + 1 + TYPE_SIGNED (t))
+
+#define TM_YEAR_BASE 1900
+
+#ifndef __isleap
+/* Nonzero if YEAR is a leap year (every 4 years,
+   except every 100th isn't, and every 400th is).  */
+# define __isleap(year)	\
+  ((year) % 4 == 0 && ((year) % 100 != 0 || (year) % 400 == 0))
+#endif
+
+
+#ifdef _LIBC
+# define my_strftime_gmtime_r __gmtime_r
+# define my_strftime_localtime_r __localtime_r
+# define tzname __tzname
+# define tzset __tzset
+#else
+
+/* If we're a strftime substitute in a GNU program, then prefer gmtime
+   to gmtime_r, since many gmtime_r implementations are buggy.
+   Similarly for localtime_r.  */
+
+# if ! HAVE_TM_GMTOFF
+static struct tm *my_strftime_gmtime_r __P ((const time_t *, struct tm *));
+static struct tm *
+my_strftime_gmtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
+{
+  struct tm *l = gmtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+# endif /* ! HAVE_TM_GMTOFF */
+
+static struct tm *my_strftime_localtime_r __P ((const time_t *, struct tm *));
+static struct tm *
+my_strftime_localtime_r (t, tp)
+     const time_t *t;
+     struct tm *tp;
+{
+  struct tm *l = localtime (t);
+  if (! l)
+    return 0;
+  *tp = *l;
+  return tp;
+}
+#endif /* ! defined _LIBC */
+
+
+#if !defined memset && !defined HAVE_MEMSET && !defined _LIBC
+/* Some systems lack the `memset' function and we don't want to
+   introduce additional dependencies.  */
+/* The SGI compiler reportedly barfs on the trailing null
+   if we use a string constant as the initializer.  28 June 1997, rms.  */
+static const CHAR_T spaces[16] = /* "                " */
+{
+  L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),
+  L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' '),L_(' ')
+};
+static const CHAR_T zeroes[16] = /* "0000000000000000" */
+{
+  L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),
+  L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0'),L_('0')
+};
 
-#if !defined(OS2) && !defined(MSDOS) && defined(HAVE_TZNAME)
-extern char *tzname[2];
-extern int daylight;
-#if defined(SOLARIS) || defined(mips)
-extern long int timezone, altzone;
+# define memset_space(P, Len) \
+  do {									      \
+    int _len = (Len);							      \
+									      \
+    do									      \
+      {									      \
+	int _this = _len > 16 ? 16 : _len;				      \
+	(P) = MEMPCPY ((P), spaces, _this * sizeof (CHAR_T));		      \
+	_len -= _this;							      \
+      }									      \
+    while (_len > 0);							      \
+  } while (0)
+
+# define memset_zero(P, Len) \
+  do {									      \
+    int _len = (Len);							      \
+									      \
+    do									      \
+      {									      \
+	int _this = _len > 16 ? 16 : _len;				      \
+	(P) = MEMPCPY ((P), zeroes, _this * sizeof (CHAR_T));		      \
+	_len -= _this;							      \
+      }									      \
+    while (_len > 0);							      \
+  } while (0)
 #else
-extern int timezone, altzone;
+# ifdef COMPILE_WIDE
+#  define memset_space(P, Len) (wmemset ((P), L' ', (Len)), (P) += (Len))
+#  define memset_zero(P, Len) (wmemset ((P), L'0', (Len)), (P) += (Len))
+# else
+#  define memset_space(P, Len) (memset ((P), ' ', (Len)), (P) += (Len))
+#  define memset_zero(P, Len) (memset ((P), '0', (Len)), (P) += (Len))
+# endif
 #endif
+
+#define add(n, f)							      \
+  do									      \
+    {									      \
+      int _n = (n);							      \
+      int _delta = width - _n;						      \
+      int _incr = _n + (_delta > 0 ? _delta : 0);			      \
+      if (i + _incr >= maxsize)						      \
+	return 0;							      \
+      if (p)								      \
+	{								      \
+	  if (_delta > 0)						      \
+	    {								      \
+	      if (pad == L_('0'))					      \
+		memset_zero (p, _delta);				      \
+	      else							      \
+		memset_space (p, _delta);				      \
+	    }								      \
+	  f;								      \
+	  p += _n;							      \
+	}								      \
+      i += _incr;							      \
+    } while (0)
+
+#define cpy(n, s) \
+    add ((n),								      \
+	 if (to_lowcase)						      \
+	   memcpy_lowcase (p, (s), _n);					      \
+	 else if (to_uppcase)						      \
+	   memcpy_uppcase (p, (s), _n);					      \
+	 else								      \
+	   MEMCPY ((PTR) p, (const PTR) (s), _n))
+
+#ifdef COMPILE_WIDE
+# define widen(os, ws, l) \
+  {									      \
+    mbstate_t __st;							      \
+    const char *__s = os;						      \
+    memset (&__st, '\0', sizeof (__st));				      \
+    l = __mbsrtowcs (NULL, &__s, 0, &__st);				      \
+    ws = alloca ((l + 1) * sizeof (wchar_t));				      \
+    (void) __mbsrtowcs (ws, &__s, l, &__st);				      \
+  }
 #endif
 
-#undef min	/* just in case */
 
-/* min --- return minimum of two numbers */
+#ifdef COMPILE_WIDE
+# define TOUPPER(Ch) towupper (Ch)
+# define TOLOWER(Ch) towlower (Ch)
+#else
+# ifdef _LIBC
+#  define TOUPPER(Ch) toupper (Ch)
+#  define TOLOWER(Ch) tolower (Ch)
+# else
+#  define TOUPPER(Ch) (islower (Ch) ? toupper (Ch) : (Ch))
+#  define TOLOWER(Ch) (isupper (Ch) ? tolower (Ch) : (Ch))
+# endif
+#endif
+/* We don't use `isdigit' here since the locale dependent
+   interpretation is not what we want here.  We only need to accept
+   the arabic digits in the ASCII range.  One day there is perhaps a
+   more reliable way to accept other sets of digits.  */
+#define ISDIGIT(Ch) ((unsigned int) (Ch) - L_('0') <= 9)
+
+static CHAR_T *memcpy_lowcase __P ((CHAR_T *dest, const CHAR_T *src,
+				    size_t len));
+
+static CHAR_T *
+memcpy_lowcase (dest, src, len)
+     CHAR_T *dest;
+     const CHAR_T *src;
+     size_t len;
+{
+  while (len-- > 0)
+    dest[len] = TOLOWER ((UCHAR_T) src[len]);
+  return dest;
+}
+
+static CHAR_T *memcpy_uppcase __P ((CHAR_T *dest, const CHAR_T *src,
+				    size_t len));
+
+static CHAR_T *
+memcpy_uppcase (dest, src, len)
+     CHAR_T *dest;
+     const CHAR_T *src;
+     size_t len;
+{
+  while (len-- > 0)
+    dest[len] = TOUPPER ((UCHAR_T) src[len]);
+  return dest;
+}
+
 
-static inline int
-min(int a, int b)
+#if ! HAVE_TM_GMTOFF
+/* Yield the difference between *A and *B,
+   measured in seconds, ignoring leap seconds.  */
+# define tm_diff ftime_tm_diff
+static int tm_diff __P ((const struct tm *, const struct tm *));
+static int
+tm_diff (a, b)
+     const struct tm *a;
+     const struct tm *b;
 {
-	return (a < b ? a : b);
+  /* Compute intervening leap days correctly even if year is negative.
+     Take care to avoid int overflow in leap day calculations,
+     but it's OK to assume that A and B are close to each other.  */
+  int a4 = (a->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (a->tm_year & 3);
+  int b4 = (b->tm_year >> 2) + (TM_YEAR_BASE >> 2) - ! (b->tm_year & 3);
+  int a100 = a4 / 25 - (a4 % 25 < 0);
+  int b100 = b4 / 25 - (b4 % 25 < 0);
+  int a400 = a100 >> 2;
+  int b400 = b100 >> 2;
+  int intervening_leap_days = (a4 - b4) - (a100 - b100) + (a400 - b400);
+  int years = a->tm_year - b->tm_year;
+  int days = (365 * years + intervening_leap_days
+	      + (a->tm_yday - b->tm_yday));
+  return (60 * (60 * (24 * days + (a->tm_hour - b->tm_hour))
+		+ (a->tm_min - b->tm_min))
+	  + (a->tm_sec - b->tm_sec));
 }
+#endif /* ! HAVE_TM_GMTOFF */
 
-#undef max	/* also, just in case */
 
-/* max --- return maximum of two numbers */
 
-static inline int
-max(int a, int b)
+/* The number of days from the first day of the first ISO week of this
+   year to the year day YDAY with week day WDAY.  ISO weeks start on
+   Monday; the first ISO week has the year's first Thursday.  YDAY may
+   be as small as YDAY_MINIMUM.  */
+#define ISO_WEEK_START_WDAY 1 /* Monday */
+#define ISO_WEEK1_WDAY 4 /* Thursday */
+#define YDAY_MINIMUM (-366)
+static int iso_week_days __P ((int, int));
+#ifdef __GNUC__
+__inline__
+#endif
+static int
+iso_week_days (yday, wday)
+     int yday;
+     int wday;
 {
-	return (a > b ? a : b);
+  /* Add enough to the first operand of % to make it nonnegative.  */
+  int big_enough_multiple_of_7 = (-YDAY_MINIMUM / 7 + 2) * 7;
+  return (yday
+	  - (yday - wday + ISO_WEEK1_WDAY + big_enough_multiple_of_7) % 7
+	  + ISO_WEEK1_WDAY - ISO_WEEK_START_WDAY);
 }
 
-/* strftime --- produce formatted time */
 
+#if !(defined _NL_CURRENT || HAVE_STRFTIME)
+static CHAR_T const weekday_name[][10] =
+  {
+    L_("Sunday"), L_("Monday"), L_("Tuesday"), L_("Wednesday"),
+    L_("Thursday"), L_("Friday"), L_("Saturday")
+  };
+static CHAR_T const month_name[][10] =
+  {
+    L_("January"), L_("February"), L_("March"), L_("April"), L_("May"),
+    L_("June"), L_("July"), L_("August"), L_("September"), L_("October"),
+    L_("November"), L_("December")
+  };
+#endif
+
+
+/* When compiling this file, GNU applications can #define my_strftime
+   to a symbol (typically nstrftime) to get an extended strftime with
+   extra arguments UT and NS.  Emacs is a special case for now, but
+   this Emacs-specific code can be removed once Emacs's config.h
+   defines my_strftime.  */
+#if defined emacs && !defined my_strftime
+# define my_strftime nstrftime
+#endif
+
+#ifdef my_strftime
+# define extra_args , ut, ns
+# define extra_args_spec int ut; int ns;
+# define extra_args_spec_iso , int ut, int ns
+#else
+# ifdef COMPILE_WIDE
+#  define my_strftime wcsftime
+# else
+#  define my_strftime strftime
+# endif
+# define extra_args
+# define extra_args_spec
+# define extra_args_spec_iso
+/* We don't have this information in general.  */
+# define ut 0
+# define ns 0
+#endif
+
+#if !defined _LIBC && HAVE_TZNAME && HAVE_TZSET
+  /* Solaris 2.5 tzset sometimes modifies the storage returned by localtime.
+     Work around this bug by copying *tp before it might be munged.  */
+  size_t _strftime_copytm __P ((char *, size_t, const char *,
+			        const struct tm * extra_args_spec_iso));
+  size_t
+  my_strftime (s, maxsize, format, tp extra_args)
+      CHAR_T *s;
+      size_t maxsize;
+      const CHAR_T *format;
+      const struct tm *tp;
+      extra_args_spec
+  {
+    struct tm tmcopy;
+    tmcopy = *tp;
+    return _strftime_copytm (s, maxsize, format, &tmcopy extra_args);
+  }
+# undef my_strftime
+# define my_strftime _strftime_copytm
+#endif
+
+
+/* Write information from TP into S according to the format
+   string FORMAT, writing no more that MAXSIZE characters
+   (including the terminating '\0') and returning number of
+   characters written.  If S is NULL, nothing will be written
+   anywhere, so to determine how many characters would be
+   written, use NULL for S and (size_t) UINT_MAX for MAXSIZE.  */
 size_t
-strftime(char *s, size_t maxsize, const char *format, const struct tm *timeptr)
+my_strftime (s, maxsize, format, tp extra_args)
+      CHAR_T *s;
+      size_t maxsize;
+      const CHAR_T *format;
+      const struct tm *tp;
+      extra_args_spec
 {
-	char *endp = s + maxsize;
-	char *start = s;
-	auto char tbuf[100];
-	long off;
-	int i, w, y;
-	static short first = 1;
-#ifdef POSIX_SEMANTICS
-	static char *savetz = NULL;
-	static int savetzlen = 0;
-	char *tz;
-#endif /* POSIX_SEMANTICS */
-#ifndef HAVE_TM_ZONE
-#ifndef HAVE_TM_NAME
-#ifndef HAVE_TZNAME
-	extern char *timezone();
-	struct timeval tv;
-	struct timezone zone;
-#endif /* HAVE_TZNAME */
-#endif /* HAVE_TM_NAME */
-#endif /* HAVE_TM_ZONE */
-
-	/* various tables, useful in North America */
-	static const char *days_a[] = {
-		"Sun", "Mon", "Tue", "Wed",
-		"Thu", "Fri", "Sat",
-	};
-	static const char *days_l[] = {
-		"Sunday", "Monday", "Tuesday", "Wednesday",
-		"Thursday", "Friday", "Saturday",
-	};
-	static const char *months_a[] = {
-		"Jan", "Feb", "Mar", "Apr", "May", "Jun",
-		"Jul", "Aug", "Sep", "Oct", "Nov", "Dec",
-	};
-	static const char *months_l[] = {
-		"January", "February", "March", "April",
-		"May", "June", "July", "August", "September",
-		"October", "November", "December",
-	};
-	static const char *ampm[] = { "AM", "PM", };
-
-	if (s == NULL || format == NULL || timeptr == NULL || maxsize == 0)
-		return 0;
-
-	/* quick check if we even need to bother */
-	if (strchr(format, '%') == NULL && strlen(format) + 1 >= maxsize)
-		return 0;
-
-#ifndef POSIX_SEMANTICS
-	if (first) {
-		tzset();
-		first = 0;
+  int hour12 = tp->tm_hour;
+#ifdef _NL_CURRENT
+  /* We cannot make the following values variables since we must delay
+     the evaluation of these values until really needed since some
+     expressions might not be valid in every situation.  The `struct tm'
+     might be generated by a strptime() call that initialized
+     only a few elements.  Dereference the pointers only if the format
+     requires this.  Then it is ok to fail if the pointers are invalid.  */
+# define a_wkday \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABDAY_1) + tp->tm_wday))
+# define f_wkday \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(DAY_1) + tp->tm_wday))
+# define a_month \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ABMON_1) + tp->tm_mon))
+# define f_month \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(MON_1) + tp->tm_mon))
+# define ampm \
+  ((const CHAR_T *) _NL_CURRENT (LC_TIME, tp->tm_hour > 11		      \
+				 ? NLW(PM_STR) : NLW(AM_STR)))
+
+# define aw_len STRLEN (a_wkday)
+# define am_len STRLEN (a_month)
+# define ap_len STRLEN (ampm)
+#else
+# if !HAVE_STRFTIME
+#  define f_wkday (weekday_name[tp->tm_wday])
+#  define f_month (month_name[tp->tm_mon])
+#  define a_wkday f_wkday
+#  define a_month f_month
+#  define ampm (L_("AMPM") + 2 * (tp->tm_hour > 11))
+
+  size_t aw_len = 3;
+  size_t am_len = 3;
+  size_t ap_len = 2;
+# endif
+#endif
+  const char *zone;
+  size_t i = 0;
+  CHAR_T *p = s;
+  const CHAR_T *f;
+#if DO_MULTIBYTE && !defined COMPILE_WIDE
+  const char *format_end = NULL;
+#endif
+
+  zone = NULL;
+#if HAVE_TM_ZONE
+  /* The POSIX test suite assumes that setting
+     the environment variable TZ to a new value before calling strftime()
+     will influence the result (the %Z format) even if the information in
+     TP is computed with a totally different time zone.
+     This is bogus: though POSIX allows bad behavior like this,
+     POSIX does not require it.  Do the right thing instead.  */
+  zone = (const char *) tp->tm_zone;
+#endif
+#if HAVE_TZNAME
+  if (ut)
+    {
+      if (! (zone && *zone))
+	zone = "GMT";
+    }
+  else
+    {
+      /* POSIX.1 8.1.1 requires that whenever strftime() is called, the
+	 time zone names contained in the external variable `tzname' shall
+	 be set as if the tzset() function had been called.  */
+# if HAVE_TZSET
+      tzset ();
+# endif
+    }
+#endif
+
+  if (hour12 > 12)
+    hour12 -= 12;
+  else
+    if (hour12 == 0)
+      hour12 = 12;
+
+  for (f = format; *f != '\0'; ++f)
+    {
+      int pad = 0;		/* Padding for number ('-', '_', or 0).  */
+      int modifier;		/* Field modifier ('E', 'O', or 0).  */
+      int digits;		/* Max digits for numeric format.  */
+      int number_value; 	/* Numeric value to be printed.  */
+      int negative_number;	/* 1 if the number is negative.  */
+      const CHAR_T *subfmt;
+      CHAR_T *bufp;
+      CHAR_T buf[1 + (sizeof (int) < sizeof (time_t)
+		      ? INT_STRLEN_BOUND (time_t)
+		      : INT_STRLEN_BOUND (int))];
+      int width = -1;
+      int to_lowcase = 0;
+      int to_uppcase = 0;
+      int change_case = 0;
+      int format_char;
+
+#if DO_MULTIBYTE && !defined COMPILE_WIDE
+      switch (*f)
+	{
+	case L_('%'):
+	  break;
+
+	case L_('\b'): case L_('\t'): case L_('\n'):
+	case L_('\v'): case L_('\f'): case L_('\r'):
+	case L_(' '): case L_('!'): case L_('"'): case L_('#'): case L_('&'):
+	case L_('\''): case L_('('): case L_(')'): case L_('*'): case L_('+'):
+	case L_(','): case L_('-'): case L_('.'): case L_('/'): case L_('0'):
+	case L_('1'): case L_('2'): case L_('3'): case L_('4'): case L_('5'):
+	case L_('6'): case L_('7'): case L_('8'): case L_('9'): case L_(':'):
+	case L_(';'): case L_('<'): case L_('='): case L_('>'): case L_('?'):
+	case L_('A'): case L_('B'): case L_('C'): case L_('D'): case L_('E'):
+	case L_('F'): case L_('G'): case L_('H'): case L_('I'): case L_('J'):
+	case L_('K'): case L_('L'): case L_('M'): case L_('N'): case L_('O'):
+	case L_('P'): case L_('Q'): case L_('R'): case L_('S'): case L_('T'):
+	case L_('U'): case L_('V'): case L_('W'): case L_('X'): case L_('Y'):
+	case L_('Z'): case L_('['): case L_('\\'): case L_(']'): case L_('^'):
+	case L_('_'): case L_('a'): case L_('b'): case L_('c'): case L_('d'):
+	case L_('e'): case L_('f'): case L_('g'): case L_('h'): case L_('i'):
+	case L_('j'): case L_('k'): case L_('l'): case L_('m'): case L_('n'):
+	case L_('o'): case L_('p'): case L_('q'): case L_('r'): case L_('s'):
+	case L_('t'): case L_('u'): case L_('v'): case L_('w'): case L_('x'):
+	case L_('y'): case L_('z'): case L_('{'): case L_('|'): case L_('}'):
+	case L_('~'):
+	  /* The C Standard requires these 98 characters (plus '%') to
+	     be in the basic execution character set.  None of these
+	     characters can start a multibyte sequence, so they need
+	     not be analyzed further.  */
+	  add (1, *p = *f);
+	  continue;
+
+	default:
+	  /* Copy this multibyte sequence until we reach its end, find
+	     an error, or come back to the initial shift state.  */
+	  {
+	    mbstate_t mbstate = mbstate_zero;
+	    size_t len = 0;
+	    size_t fsize;
+
+	    if (! format_end)
+	      format_end = f + strlen (f) + 1;
+	    fsize = format_end - f;
+
+	    do
+	      {
+		size_t bytes = mbrlen (f + len, fsize - len, &mbstate);
+
+		if (bytes == 0)
+		  break;
+
+		if (bytes == (size_t) -2)
+		  {
+		    len += strlen (f + len);
+		    break;
+		  }
+
+		if (bytes == (size_t) -1)
+		  {
+		    len++;
+		    break;
+		  }
+
+		len += bytes;
+	      }
+	    while (! mbsinit (&mbstate));
+
+	    cpy (len, f);
+	    f += len - 1;
+	    continue;
+	  }
 	}
-#else	/* POSIX_SEMANTICS */
-	tz = getenv("TZ");
-	if (first) {
-		if (tz != NULL) {
-			int tzlen = strlen(tz);
-
-			savetz = (char *) malloc(tzlen + 1);
-			if (savetz != NULL) {
-				savetzlen = tzlen + 1;
-				strcpy(savetz, tz);
-			}
-		}
-		tzset();
-		first = 0;
+
+#else /* ! DO_MULTIBYTE */
+
+      /* Either multibyte encodings are not supported, they are
+	 safe for formats, so any non-'%' byte can be copied through,
+	 or this is the wide character version.  */
+      if (*f != L_('%'))
+	{
+	  add (1, *p = *f);
+	  continue;
 	}
-	/* if we have a saved TZ, and it is different, recapture and reset */
-	if (tz && savetz && (tz[0] != savetz[0] || strcmp(tz, savetz) != 0)) {
-		i = strlen(tz) + 1;
-		if (i > savetzlen) {
-			savetz = (char *) realloc(savetz, i);
-			if (savetz) {
-				savetzlen = i;
-				strcpy(savetz, tz);
-			}
-		} else
-			strcpy(savetz, tz);
-		tzset();
+
+#endif /* ! DO_MULTIBYTE */
+
+      /* Check for flags that can modify a format.  */
+      while (1)
+	{
+	  switch (*++f)
+	    {
+	      /* This influences the number formats.  */
+	    case L_('_'):
+	    case L_('-'):
+	    case L_('0'):
+	      pad = *f;
+	      continue;
+
+	      /* This changes textual output.  */
+	    case L_('^'):
+	      to_uppcase = 1;
+	      continue;
+	    case L_('#'):
+	      change_case = 1;
+	      continue;
+
+	    default:
+	      break;
+	    }
+	  break;
 	}
-#endif	/* POSIX_SEMANTICS */
 
-	for (; *format && s < endp - 1; format++) {
-		tbuf[0] = '\0';
-		if (*format != '%') {
-			*s++ = *format;
-			continue;
-		}
-	again:
-		switch (*++format) {
-		case '\0':
-			*s++ = '%';
-			goto out;
-
-		case '%':
-			*s++ = '%';
-			continue;
-
-		case 'a':	/* abbreviated weekday name */
-			if (timeptr->tm_wday < 0 || timeptr->tm_wday > 6)
-				strcpy(tbuf, "?");
-			else
-				strcpy(tbuf, days_a[timeptr->tm_wday]);
-			break;
-
-		case 'A':	/* full weekday name */
-			if (timeptr->tm_wday < 0 || timeptr->tm_wday > 6)
-				strcpy(tbuf, "?");
-			else
-				strcpy(tbuf, days_l[timeptr->tm_wday]);
-			break;
-
-		case 'b':	/* abbreviated month name */
-		short_month:
-			if (timeptr->tm_mon < 0 || timeptr->tm_mon > 11)
-				strcpy(tbuf, "?");
-			else
-				strcpy(tbuf, months_a[timeptr->tm_mon]);
-			break;
-
-		case 'B':	/* full month name */
-			if (timeptr->tm_mon < 0 || timeptr->tm_mon > 11)
-				strcpy(tbuf, "?");
-			else
-				strcpy(tbuf, months_l[timeptr->tm_mon]);
-			break;
-
-		case 'c':	/* appropriate date and time representation */
-			/*
-			 * This used to be:
-			 *
-			 * strftime(tbuf, sizeof tbuf, "%a %b %e %H:%M:%S %Y", timeptr);
-			 *
-			 * Now, per the ISO 1999 C standard, it this:
-			 */
-			strftime(tbuf, sizeof tbuf, "%A %B %d %T %Y", timeptr);
-			break;
-
-		case 'C':
-		century:
-			sprintf(tbuf, "%02d", (timeptr->tm_year + 1900) / 100);
-			break;
-
-		case 'd':	/* day of the month, 01 - 31 */
-			i = range(1, timeptr->tm_mday, 31);
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 'D':	/* date as %m/%d/%y */
-			strftime(tbuf, sizeof tbuf, "%m/%d/%y", timeptr);
-			break;
-
-		case 'e':	/* day of month, blank padded */
-			sprintf(tbuf, "%2d", range(1, timeptr->tm_mday, 31));
-			break;
-
-		case 'E':
-			/* POSIX (now C99) locale extensions, ignored for now */
-			goto again;
-
-		case 'F':	/* ISO 8601 date representation */
-			strftime(tbuf, sizeof tbuf, "%Y-%m-%d", timeptr);
-			break;
-
-		case 'g':
-		case 'G':
-			/*
-			 * Year of ISO week.
-			 *
-			 * If it's December but the ISO week number is one,
-			 * that week is in next year.
-			 * If it's January but the ISO week number is 52 or
-			 * 53, that week is in last year.
-			 * Otherwise, it's this year.
-			 */
-			w = iso8601wknum(timeptr);
-			if (timeptr->tm_mon == 11 && w == 1)
-				y = 1900 + timeptr->tm_year + 1;
-			else if (timeptr->tm_mon == 0 && w >= 52)
-				y = 1900 + timeptr->tm_year - 1;
-			else
-				y = 1900 + timeptr->tm_year;
-
-			if (*format == 'G')
-				sprintf(tbuf, "%d", y);
-			else
-				sprintf(tbuf, "%02d", y % 100);
-			break;
-
-		case 'h':	/* abbreviated month name */
-			goto short_month;
-
-		case 'H':	/* hour, 24-hour clock, 00 - 23 */
-			i = range(0, timeptr->tm_hour, 23);
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 'I':	/* hour, 12-hour clock, 01 - 12 */
-			i = range(0, timeptr->tm_hour, 23);
-			if (i == 0)
-				i = 12;
-			else if (i > 12)
-				i -= 12;
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 'j':	/* day of the year, 001 - 366 */
-			sprintf(tbuf, "%03d", timeptr->tm_yday + 1);
-			break;
-
-		case 'm':	/* month, 01 - 12 */
-			i = range(0, timeptr->tm_mon, 11);
-			sprintf(tbuf, "%02d", i + 1);
-			break;
-
-		case 'M':	/* minute, 00 - 59 */
-			i = range(0, timeptr->tm_min, 59);
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 'n':	/* same as \n */
-			tbuf[0] = '\n';
-			tbuf[1] = '\0';
-			break;
-
-		case 'O':
-			/* POSIX (now C99) locale extensions, ignored for now */
-			goto again;
-
-		case 'p':	/* am or pm based on 12-hour clock */
-			i = range(0, timeptr->tm_hour, 23);
-			if (i < 12)
-				strcpy(tbuf, ampm[0]);
-			else
-				strcpy(tbuf, ampm[1]);
-			break;
-
-		case 'r':	/* time as %I:%M:%S %p */
-			strftime(tbuf, sizeof tbuf, "%I:%M:%S %p", timeptr);
-			break;
-
-		case 'R':	/* time as %H:%M */
-			strftime(tbuf, sizeof tbuf, "%H:%M", timeptr);
-			break;
-
-#if defined(HAVE_MKTIME) || defined(GAWK)
-		case 's':	/* time as seconds since the Epoch */
+      /* As a GNU extension we allow to specify the field width.  */
+      if (ISDIGIT (*f))
+	{
+	  width = 0;
+	  do
+	    {
+	      width *= 10;
+	      width += *f - L_('0');
+	      ++f;
+	    }
+	  while (ISDIGIT (*f));
+	}
+
+      /* Check for modifiers.  */
+      switch (*f)
+	{
+	case L_('E'):
+	case L_('O'):
+	  modifier = *f++;
+	  break;
+
+	default:
+	  modifier = 0;
+	  break;
+	}
+
+      /* Now do the specified format.  */
+      format_char = *f;
+      switch (format_char)
+	{
+#define DO_NUMBER(d, v) \
+	  digits = width == -1 ? d : width;				      \
+	  number_value = v; goto do_number
+#define DO_NUMBER_SPACEPAD(d, v) \
+	  digits = width == -1 ? d : width;				      \
+	  number_value = v; goto do_number_spacepad
+
+	case L_('%'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  add (1, *p = *f);
+	  break;
+
+	case L_('a'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (aw_len, a_wkday);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case 'A':
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (STRLEN (f_wkday), f_wkday);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('b'):
+	case L_('h'):		/* POSIX.2 extension.  */
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+	  if (modifier != 0)
+	    goto bad_format;
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (am_len, a_month);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('B'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  if (change_case)
+	    {
+	      to_uppcase = 1;
+	      to_lowcase = 0;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (STRLEN (f_month), f_month);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
+
+	case L_('c'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == 'E'
+		 && (*(subfmt =
+		       (const CHAR_T *) _NL_CURRENT (LC_TIME,
+						     NLW(ERA_D_T_FMT)))
+		     != '\0')))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_T_FMT));
+#else
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  subfmt = L_("%a %b %e %H:%M:%S %Y");
+# endif
+#endif
+
+	subformat:
+	  {
+	    CHAR_T *old_start = p;
+	    size_t len = my_strftime (NULL, (size_t) -1, subfmt,
+				      tp extra_args);
+	    add (len, my_strftime (p, maxsize - i, subfmt,
+				   tp extra_args));
+
+	    if (to_uppcase)
+	      while (old_start < p)
 		{
-			struct tm non_const_timeptr;
+		  *old_start = TOUPPER ((UCHAR_T) *old_start);
+		  ++old_start;
+		}
+	  }
+	  break;
+
+#if HAVE_STRFTIME && ! (defined _NL_CURRENT && HAVE_STRUCT_ERA_ENTRY)
+	underlying_strftime:
+	  {
+	    /* The relevant information is available only via the
+	       underlying strftime implementation, so use that.  */
+	    char ufmt[4];
+	    char *u = ufmt;
+	    char ubuf[1024]; /* enough for any single format in practice */
+	    size_t len;
+	    /* Make sure we're calling the actual underlying strftime.
+	       In some cases, config.h contains something like
+	       "#define strftime rpl_strftime".  */
+# ifdef strftime
+#  undef strftime
+	    size_t strftime ();
+# endif
+
+	    *u++ = '%';
+	    if (modifier != 0)
+	      *u++ = modifier;
+	    *u++ = format_char;
+	    *u = '\0';
+	    len = strftime (ubuf, sizeof ubuf, ufmt, tp);
+	    if (len == 0 && ubuf[0] != '\0')
+	      return 0;
+	    cpy (len, ubuf);
+	  }
+	  break;
+#endif
 
-			non_const_timeptr = *timeptr;
-			sprintf(tbuf, "%ld", mktime(& non_const_timeptr));
-			break;
+	case L_('C'):		/* POSIX.2 extension.  */
+	  if (modifier == L_('O'))
+	    goto bad_format;
+	  if (modifier == L_('E'))
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp);
+	      if (era)
+		{
+# ifdef COMPILE_WIDE
+		  size_t len = __wcslen (era->era_wname);
+		  cpy (len, era->era_wname);
+# else
+		  size_t len = strlen (era->era_name);
+		  cpy (len, era->era_name);
+# endif
+		  break;
 		}
-#endif /* defined(HAVE_MKTIME) || defined(GAWK) */
-
-		case 'S':	/* second, 00 - 60 */
-			i = range(0, timeptr->tm_sec, 60);
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 't':	/* same as \t */
-			tbuf[0] = '\t';
-			tbuf[1] = '\0';
-			break;
-
-		case 'T':	/* time as %H:%M:%S */
-		the_time:
-			strftime(tbuf, sizeof tbuf, "%H:%M:%S", timeptr);
-			break;
-
-		case 'u':
-		/* ISO 8601: Weekday as a decimal number [1 (Monday) - 7] */
-			sprintf(tbuf, "%d", timeptr->tm_wday == 0 ? 7 :
-					timeptr->tm_wday);
-			break;
-
-		case 'U':	/* week of year, Sunday is first day of week */
-			sprintf(tbuf, "%02d", weeknumber(timeptr, 0));
-			break;
-
-		case 'V':	/* week of year according ISO 8601 */
-			sprintf(tbuf, "%02d", iso8601wknum(timeptr));
-			break;
-
-		case 'w':	/* weekday, Sunday == 0, 0 - 6 */
-			i = range(0, timeptr->tm_wday, 6);
-			sprintf(tbuf, "%d", i);
-			break;
-
-		case 'W':	/* week of year, Monday is first day of week */
-			sprintf(tbuf, "%02d", weeknumber(timeptr, 1));
-			break;
-
-		case 'x':	/* appropriate date representation */
-			strftime(tbuf, sizeof tbuf, "%A %B %d %Y", timeptr);
-			break;
-
-		case 'X':	/* appropriate time representation */
-			goto the_time;
-			break;
-
-		case 'y':	/* year without a century, 00 - 99 */
-		year:
-			i = timeptr->tm_year % 100;
-			sprintf(tbuf, "%02d", i);
-			break;
-
-		case 'Y':	/* year with century */
-		fullyear:
-			sprintf(tbuf, "%d", 1900 + timeptr->tm_year);
-			break;
-
-		/*
-		 * From: Chip Rosenthal <chip@chinacat.unicom.com>
-		 * Date: Sun, 19 Mar 1995 00:33:29 -0600 (CST)
-		 * 
-		 * Warning: the %z [code] is implemented by inspecting the
-		 * timezone name conditional compile settings, and
-		 * inferring a method to get timezone offsets. I've tried
-		 * this code on a couple of machines, but I don't doubt
-		 * there is some system out there that won't like it.
-		 * Maybe the easiest thing to do would be to bracket this
-		 * with an #ifdef that can turn it off. The %z feature
-		 * would be an admittedly obscure one that most folks can
-		 * live without, but it would be a great help to those of
-		 * us that muck around with various message processors.
-		 */
- 		case 'z':	/* time zone offset east of GMT e.g. -0600 */
-#ifdef HAVE_TM_NAME
-			/*
-			 * Systems with tm_name probably have tm_tzadj as
-			 * secs west of GMT.  Convert to mins east of GMT.
-			 */
-			off = -timeptr->tm_tzadj / 60;
-#else /* !HAVE_TM_NAME */
-#ifdef HAVE_TM_ZONE
-			/*
-			 * Systems with tm_zone probably have tm_gmtoff as
-			 * secs east of GMT.  Convert to mins east of GMT.
-			 */
-			off = timeptr->tm_gmtoff / 60;
-#else /* !HAVE_TM_ZONE */
-#if HAVE_TZNAME
-			/*
-			 * Systems with tzname[] probably have timezone as
-			 * secs west of GMT.  Convert to mins east of GMT.
-			 */
-			off = -(daylight ? timezone : altzone) / 60;
-#else /* !HAVE_TZNAME */
-			off = -zone.tz_minuteswest;
-#endif /* !HAVE_TZNAME */
-#endif /* !HAVE_TM_ZONE */
-#endif /* !HAVE_TM_NAME */
-			if (off < 0) {
-				tbuf[0] = '-';
-				off = -off;
-			} else {
-				tbuf[0] = '+';
-			}
-			sprintf(tbuf+1, "%02d%02d", off/60, off%60);
-			break;
-
-		case 'Z':	/* time zone name or abbrevation */
-#ifdef HAVE_TZNAME
-			i = (daylight && timeptr->tm_isdst > 0); /* 0 or 1 */
-			strcpy(tbuf, tzname[i]);
 #else
-#ifdef HAVE_TM_ZONE
-			strcpy(tbuf, timeptr->tm_zone);
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+
+	  {
+	    int year = tp->tm_year + TM_YEAR_BASE;
+	    DO_NUMBER (1, year / 100 - (year % 100 < 0));
+	  }
+
+	case L_('x'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == L_('E')
+		 && (*(subfmt =
+		       (const CHAR_T *)_NL_CURRENT (LC_TIME, NLW(ERA_D_FMT)))
+		     != L_('\0'))))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(D_FMT));
+	  goto subformat;
 #else
-#ifdef HAVE_TM_NAME
-			strcpy(tbuf, timeptr->tm_name);
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  /* Fall through.  */
+# endif
+#endif
+	case L_('D'):		/* POSIX.2 extension.  */
+	  if (modifier != 0)
+	    goto bad_format;
+	  subfmt = L_("%m/%d/%y");
+	  goto subformat;
+
+	case L_('d'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_mday);
+
+	case L_('e'):		/* POSIX.2 extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER_SPACEPAD (2, tp->tm_mday);
+
+	  /* All numeric formats set DIGITS and NUMBER_VALUE and then
+	     jump to one of these two labels.  */
+
+	do_number_spacepad:
+	  /* Force `_' flag unless overwritten by `0' flag.  */
+	  if (pad != L_('0'))
+	    pad = L_('_');
+
+	do_number:
+	  /* Format the number according to the MODIFIER flag.  */
+
+	  if (modifier == L_('O') && 0 <= number_value)
+	    {
+#ifdef _NL_CURRENT
+	      /* Get the locale specific alternate representation of
+		 the number NUMBER_VALUE.  If none exist NULL is returned.  */
+# ifdef COMPILE_WIDE
+	      const wchar_t *cp = _nl_get_walt_digit (number_value);
+# else
+	      const char *cp = _nl_get_alt_digit (number_value);
+# endif
+
+	      if (cp != NULL)
+		{
+		  size_t digitlen = STRLEN (cp);
+		  if (digitlen != 0)
+		    {
+		      cpy (digitlen, cp);
+		      break;
+		    }
+		}
 #else
-			gettimeofday(& tv, & zone);
-			strcpy(tbuf, timezone(zone.tz_minuteswest,
-						timeptr->tm_isdst > 0));
-#endif /* HAVE_TM_NAME */
-#endif /* HAVE_TM_ZONE */
-#endif /* HAVE_TZNAME */
-			break;
-
-#ifdef SUNOS_EXT
-		case 'k':	/* hour, 24-hour clock, blank pad */
-			sprintf(tbuf, "%2d", range(0, timeptr->tm_hour, 23));
-			break;
-
-		case 'l':	/* hour, 12-hour clock, 1 - 12, blank pad */
-			i = range(0, timeptr->tm_hour, 23);
-			if (i == 0)
-				i = 12;
-			else if (i > 12)
-				i -= 12;
-			sprintf(tbuf, "%2d", i);
-			break;
-#endif
-
-#ifdef HPUX_EXT
-		case 'N':	/* Emperor/Era name */
-			/* this is essentially the same as the century */
-			goto century;	/* %C */
-
-		case 'o':	/* Emperor/Era year */
-			goto year;	/* %y */
-#endif /* HPUX_EXT */
-
-
-#ifdef VMS_EXT
-		case 'v':	/* date as dd-bbb-YYYY */
-			sprintf(tbuf, "%2d-%3.3s-%4d",
-				range(1, timeptr->tm_mday, 31),
-				months_a[range(0, timeptr->tm_mon, 11)],
-				timeptr->tm_year + 1900);
-			for (i = 3; i < 6; i++)
-				if (islower(tbuf[i]))
-					tbuf[i] = toupper(tbuf[i]);
-			break;
-#endif
-
-		default:
-			tbuf[0] = '%';
-			tbuf[1] = *format;
-			tbuf[2] = '\0';
-			break;
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  {
+	    unsigned int u = number_value;
+
+	    bufp = buf + sizeof (buf) / sizeof (buf[0]);
+	    negative_number = number_value < 0;
+
+	    if (negative_number)
+	      u = -u;
+
+	    do
+	      *--bufp = u % 10 + L_('0');
+	    while ((u /= 10) != 0);
+  	  }
+
+	do_number_sign_and_padding:
+	  if (negative_number)
+	    *--bufp = L_('-');
+
+	  if (pad != L_('-'))
+	    {
+	      int padding = digits - (buf + (sizeof (buf) / sizeof (buf[0]))
+				      - bufp);
+
+	      if (pad == L_('_'))
+		{
+		  while (0 < padding--)
+		    *--bufp = L_(' ');
 		}
-		i = strlen(tbuf);
-		if (i) {
-			if (s + i < endp - 1) {
-				strcpy(s, tbuf);
-				s += i;
-			} else
-				return 0;
+	      else
+		{
+		  bufp += negative_number;
+		  while (0 < padding--)
+		    *--bufp = L_('0');
+		  if (negative_number)
+		    *--bufp = L_('-');
 		}
-	}
-out:
-	if (s < endp && *format == '\0') {
-		*s = '\0';
-		return (s - start);
-	} else
-		return 0;
-}
+	    }
 
-/* isleap --- is a year a leap year? */
+	  cpy (buf + sizeof (buf) / sizeof (buf[0]) - bufp, bufp);
+	  break;
 
-static int
-isleap(int year)
-{
-	return ((year % 4 == 0 && year % 100 != 0) || year % 400 == 0);
-}
+	case L_('F'):
+	  if (modifier != 0)
+	    goto bad_format;
+	  subfmt = L_("%Y-%m-%d");
+	  goto subformat;
 
+	case L_('H'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-/* iso8601wknum --- compute week number according to ISO 8601 */
+	  DO_NUMBER (2, tp->tm_hour);
 
-static int
-iso8601wknum(const struct tm *timeptr)
-{
-	/*
-	 * From 1003.2:
-	 *	If the week (Monday to Sunday) containing January 1
-	 *	has four or more days in the new year, then it is week 1;
-	 *	otherwise it is the highest numbered week of the previous
-	 *	year (52 or 53), and the next week is week 1.
-	 *
-	 * ADR: This means if Jan 1 was Monday through Thursday,
-	 *	it was week 1, otherwise week 52 or 53.
-	 *
-	 * XPG4 erroneously included POSIX.2 rationale text in the
-	 * main body of the standard. Thus it requires week 53.
-	 */
-
-	int weeknum, jan1day, diff;
-
-	/* get week number, Monday as first day of the week */
-	weeknum = weeknumber(timeptr, 1);
-
-	/*
-	 * With thanks and tip of the hatlo to tml@tik.vtt.fi
-	 *
-	 * What day of the week does January 1 fall on?
-	 * We know that
-	 *	(timeptr->tm_yday - jan1.tm_yday) MOD 7 ==
-	 *		(timeptr->tm_wday - jan1.tm_wday) MOD 7
-	 * and that
-	 * 	jan1.tm_yday == 0
-	 * and that
-	 * 	timeptr->tm_wday MOD 7 == timeptr->tm_wday
-	 * from which it follows that. . .
- 	 */
-	jan1day = timeptr->tm_wday - (timeptr->tm_yday % 7);
-	if (jan1day < 0)
-		jan1day += 7;
-
-	/*
-	 * If Jan 1 was a Monday through Thursday, it was in
-	 * week 1.  Otherwise it was last year's highest week, which is
-	 * this year's week 0.
-	 *
-	 * What does that mean?
-	 * If Jan 1 was Monday, the week number is exactly right, it can
-	 *	never be 0.
-	 * If it was Tuesday through Thursday, the weeknumber is one
-	 *	less than it should be, so we add one.
-	 * Otherwise, Friday, Saturday or Sunday, the week number is
-	 * OK, but if it is 0, it needs to be 52 or 53.
-	 */
-	switch (jan1day) {
-	case 1:		/* Monday */
-		break;
-	case 2:		/* Tuesday */
-	case 3:		/* Wednesday */
-	case 4:		/* Thursday */
-		weeknum++;
-		break;
-	case 5:		/* Friday */
-	case 6:		/* Saturday */
-	case 0:		/* Sunday */
-		if (weeknum == 0) {
-#ifdef USE_BROKEN_XPG4
-			/* XPG4 (as of March 1994) says 53 unconditionally */
-			weeknum = 53;
-#else
-			/* get week number of last week of last year */
-			struct tm dec31ly;	/* 12/31 last year */
-			dec31ly = *timeptr;
-			dec31ly.tm_year--;
-			dec31ly.tm_mon = 11;
-			dec31ly.tm_mday = 31;
-			dec31ly.tm_wday = (jan1day == 0) ? 6 : jan1day - 1;
-			dec31ly.tm_yday = 364 + isleap(dec31ly.tm_year + 1900);
-			weeknum = iso8601wknum(& dec31ly);
-#endif
-		}
-		break;
-	}
+	case L_('I'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-	if (timeptr->tm_mon == 11) {
-		/*
-		 * The last week of the year
-		 * can be in week 1 of next year.
-		 * Sigh.
-		 *
-		 * This can only happen if
-		 *	M   T  W
-		 *	29  30 31
-		 *	30  31
-		 *	31
-		 */
-		int wday, mday;
-
-		wday = timeptr->tm_wday;
-		mday = timeptr->tm_mday;
-		if (   (wday == 1 && (mday >= 29 && mday <= 31))
-		    || (wday == 2 && (mday == 30 || mday == 31))
-		    || (wday == 3 &&  mday == 31))
-			weeknum = 1;
-	}
+	  DO_NUMBER (2, hour12);
 
-	return weeknum;
-}
+	case L_('k'):		/* GNU extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-/* weeknumber --- figure how many weeks into the year */
+	  DO_NUMBER_SPACEPAD (2, tp->tm_hour);
 
-/* With thanks and tip of the hatlo to ado@elsie.nci.nih.gov */
+	case L_('l'):		/* GNU extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-static int
-weeknumber(const struct tm *timeptr, int firstweekday)
-{
-	int wday = timeptr->tm_wday;
-	int ret;
-
-	if (firstweekday == 1) {
-		if (wday == 0)	/* sunday */
-			wday = 6;
-		else
-			wday--;
-	}
-	ret = ((timeptr->tm_yday + 7 - wday) / 7);
-	if (ret < 0)
-		ret = 0;
-	return ret;
-}
+	  DO_NUMBER_SPACEPAD (2, hour12);
 
-#if 0
-/* ADR --- I'm loathe to mess with ado's code ... */
-
-Date:         Wed, 24 Apr 91 20:54:08 MDT
-From: Michal Jaegermann <audfax!emory!vm.ucs.UAlberta.CA!NTOMCZAK>
-To: arnold@audiofax.com
-
-Hi Arnold,
-in a process of fixing of strftime() in libraries on Atari ST I grabbed
-some pieces of code from your own strftime.  When doing that it came
-to mind that your weeknumber() function compiles a little bit nicer
-in the following form:
-/*
- * firstweekday is 0 if starting in Sunday, non-zero if in Monday
- */
-{
-    return (timeptr->tm_yday - timeptr->tm_wday +
-	    (firstweekday ? (timeptr->tm_wday ? 8 : 1) : 7)) / 7;
-}
-How nicer it depends on a compiler, of course, but always a tiny bit.
-
-   Cheers,
-   Michal
-   ntomczak@vm.ucs.ualberta.ca
-#endif
-
-#ifdef	TEST_STRFTIME
-
-/*
- * NAME:
- *	tst
- *
- * SYNOPSIS:
- *	tst
- *
- * DESCRIPTION:
- *	"tst" is a test driver for the function "strftime".
- *
- * OPTIONS:
- *	None.
- *
- * AUTHOR:
- *	Karl Vogel
- *	Control Data Systems, Inc.
- *	vogelke@c-17igp.wpafb.af.mil
- *
- * BUGS:
- *	None noticed yet.
- *
- * COMPILE:
- *	cc -o tst -DTEST_STRFTIME strftime.c
- */
-
-/* ADR: I reformatted this to my liking, and deleted some unneeded code. */
+	case L_('j'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-#ifndef NULL
-#include	<stdio.h>
-#endif
-#include	<sys/time.h>
-#include	<string.h>
+	  DO_NUMBER (3, 1 + tp->tm_yday);
 
-#define		MAXTIME		132
+	case L_('M'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-/*
- * Array of time formats.
- */
+	  DO_NUMBER (2, tp->tm_min);
 
-static char *array[] =
-{
-	"(%%A)      full weekday name, var length (Sunday..Saturday)  %A",
-	"(%%B)       full month name, var length (January..December)  %B",
-	"(%%C)                                               Century  %C",
-	"(%%D)                                       date (%%m/%%d/%%y)  %D",
-	"(%%E)                           Locale extensions (ignored)  %E",
-	"(%%F)       full month name, var length (January..December)  %F",
-	"(%%H)                          hour (24-hour clock, 00..23)  %H",
-	"(%%I)                          hour (12-hour clock, 01..12)  %I",
-	"(%%M)                                       minute (00..59)  %M",
-	"(%%N)                                      Emporer/Era Name  %N",
-	"(%%O)                           Locale extensions (ignored)  %O",
-	"(%%R)                                 time, 24-hour (%%H:%%M)  %R",
-	"(%%S)                                       second (00..60)  %S",
-	"(%%T)                              time, 24-hour (%%H:%%M:%%S)  %T",
-	"(%%U)    week of year, Sunday as first day of week (00..53)  %U",
-	"(%%V)                    week of year according to ISO 8601  %V",
-	"(%%W)    week of year, Monday as first day of week (00..53)  %W",
-	"(%%X)     appropriate locale time representation (%H:%M:%S)  %X",
-	"(%%Y)                           year with century (1970...)  %Y",
-	"(%%Z) timezone (EDT), or blank if timezone not determinable  %Z",
-	"(%%a)          locale's abbreviated weekday name (Sun..Sat)  %a",
-	"(%%b)            locale's abbreviated month name (Jan..Dec)  %b",
-	"(%%c)           full date (Sat Nov  4 12:02:33 1989)%n%t%t%t  %c",
-	"(%%d)                             day of the month (01..31)  %d",
-	"(%%e)               day of the month, blank-padded ( 1..31)  %e",
-	"(%%h)                                should be same as (%%b)  %h",
-	"(%%j)                            day of the year (001..366)  %j",
-	"(%%k)               hour, 24-hour clock, blank pad ( 0..23)  %k",
-	"(%%l)               hour, 12-hour clock, blank pad ( 0..12)  %l",
-	"(%%m)                                        month (01..12)  %m",
-	"(%%o)                                      Emporer/Era Year  %o",
-	"(%%p)              locale's AM or PM based on 12-hour clock  %p",
-	"(%%r)                   time, 12-hour (same as %%I:%%M:%%S %%p)  %r",
-	"(%%u) ISO 8601: Weekday as decimal number [1 (Monday) - 7]   %u",
-	"(%%v)                                VMS date (dd-bbb-YYYY)  %v",
-	"(%%w)                       day of week (0..6, Sunday == 0)  %w",
-	"(%%x)                appropriate locale date representation  %x",
-	"(%%y)                      last two digits of year (00..99)  %y",
-	"(%%z)      timezone offset east of GMT as HHMM (e.g. -0500)  %z",
-	(char *) NULL
-};
+	case L_('m'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-/* main routine. */
+	  DO_NUMBER (2, tp->tm_mon + 1);
 
-int
-main(argc, argv)
-int argc;
-char **argv;
-{
-	long time();
+	case L_('N'):		/* GNU extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
 
-	char *next;
-	char string[MAXTIME];
+	  number_value = ns;
+	  if (width != -1)
+	    {
+	      /* Take an explicit width less than 9 as a precision.  */
+	      int j;
+	      for (j = width; j < 9; j++)
+		number_value /= 10;
+	    }
 
-	int k;
-	int length;
+	  DO_NUMBER (9, number_value);
 
-	struct tm *tm;
+	case L_('n'):		/* POSIX.2 extension.  */
+	  add (1, *p = L_('\n'));
+	  break;
 
-	long clock;
+	case L_('P'):
+	  to_lowcase = 1;
+#if !defined _NL_CURRENT && HAVE_STRFTIME
+	  format_char = L_('p');
+#endif
+	  /* FALLTHROUGH */
+
+	case L_('p'):
+	  if (change_case)
+	    {
+	      to_uppcase = 0;
+	      to_lowcase = 1;
+	    }
+#if defined _NL_CURRENT || !HAVE_STRFTIME
+	  cpy (ap_len, ampm);
+	  break;
+#else
+	  goto underlying_strftime;
+#endif
 
-	/* Call the function. */
+	case L_('R'):		/* ISO C99 extension.  */
+	  subfmt = L_("%H:%M");
+	  goto subformat;
 
-	clock = time((long *) 0);
-	tm = localtime(&clock);
+	case L_('r'):		/* POSIX.2 extension.  */
+#ifdef _NL_CURRENT
+	  if (*(subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME,
+						       NLW(T_FMT_AMPM)))
+	      == L_('\0'))
+#endif
+	    subfmt = L_("%I:%M:%S %p");
+	  goto subformat;
+
+	case L_('S'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, tp->tm_sec);
+
+	case L_('s'):		/* GNU extension.  */
+  	  {
+	    struct tm ltm;
+	    time_t t;
+
+	    ltm = *tp;
+	    t = mktime (&ltm);
+
+	    /* Generate string value for T using time_t arithmetic;
+	       this works even if sizeof (long) < sizeof (time_t).  */
+
+	    bufp = buf + sizeof (buf) / sizeof (buf[0]);
+	    negative_number = t < 0;
+
+	    do
+	      {
+		int d = t % 10;
+		t /= 10;
+
+		if (negative_number)
+		  {
+		    d = -d;
+
+		    /* Adjust if division truncates to minus infinity.  */
+		    if (0 < -1 % 10 && d < 0)
+		      {
+			t++;
+			d += 10;
+		      }
+		  }
+
+		*--bufp = d + L_('0');
+	      }
+	    while (t != 0);
+
+	    digits = 1;
+	    goto do_number_sign_and_padding;
+	  }
+
+	case L_('X'):
+	  if (modifier == L_('O'))
+	    goto bad_format;
+#ifdef _NL_CURRENT
+	  if (! (modifier == L_('E')
+		 && (*(subfmt =
+		       (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(ERA_T_FMT)))
+		     != L_('\0'))))
+	    subfmt = (const CHAR_T *) _NL_CURRENT (LC_TIME, NLW(T_FMT));
+	  goto subformat;
+#else
+# if HAVE_STRFTIME
+	  goto underlying_strftime;
+# else
+	  /* Fall through.  */
+# endif
+#endif
+	case L_('T'):		/* POSIX.2 extension.  */
+	  subfmt = L_("%H:%M:%S");
+	  goto subformat;
+
+	case L_('t'):		/* POSIX.2 extension.  */
+	  add (1, *p = L_('\t'));
+	  break;
+
+	case L_('u'):		/* POSIX.2 extension.  */
+	  DO_NUMBER (1, (tp->tm_wday - 1 + 7) % 7 + 1);
+
+	case L_('U'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, (tp->tm_yday - tp->tm_wday + 7) / 7);
+
+	case L_('V'):
+	case L_('g'):		/* ISO C99 extension.  */
+	case L_('G'):		/* ISO C99 extension.  */
+	  if (modifier == L_('E'))
+	    goto bad_format;
+	  {
+	    int year = tp->tm_year + TM_YEAR_BASE;
+	    int days = iso_week_days (tp->tm_yday, tp->tm_wday);
+
+	    if (days < 0)
+	      {
+		/* This ISO week belongs to the previous year.  */
+		year--;
+		days = iso_week_days (tp->tm_yday + (365 + __isleap (year)),
+				      tp->tm_wday);
+	      }
+	    else
+	      {
+		int d = iso_week_days (tp->tm_yday - (365 + __isleap (year)),
+				       tp->tm_wday);
+		if (0 <= d)
+		  {
+		    /* This ISO week belongs to the next year.  */
+		    year++;
+		    days = d;
+		  }
+	      }
+
+	    switch (*f)
+	      {
+	      case L_('g'):
+		DO_NUMBER (2, (year % 100 + 100) % 100);
+
+	      case L_('G'):
+		DO_NUMBER (1, year);
+
+	      default:
+		DO_NUMBER (2, days / 7 + 1);
+	      }
+	  }
+
+	case L_('W'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (2, (tp->tm_yday - (tp->tm_wday - 1 + 7) % 7 + 7) / 7);
+
+	case L_('w'):
+	  if (modifier == L_('E'))
+	    goto bad_format;
+
+	  DO_NUMBER (1, tp->tm_wday);
+
+	case L_('Y'):
+	  if (modifier == 'E')
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp);
+	      if (era)
+		{
+# ifdef COMPILE_WIDE
+		  subfmt = era->era_wformat;
+# else
+		  subfmt = era->era_format;
+# endif
+		  goto subformat;
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  if (modifier == L_('O'))
+	    goto bad_format;
+	  else
+	    DO_NUMBER (1, tp->tm_year + TM_YEAR_BASE);
+
+	case L_('y'):
+	  if (modifier == L_('E'))
+	    {
+#if HAVE_STRUCT_ERA_ENTRY
+	      struct era_entry *era = _nl_get_era_entry (tp);
+	      if (era)
+		{
+		  int delta = tp->tm_year - era->start_date[0];
+		  DO_NUMBER (1, (era->offset
+				 + delta * era->absolute_direction));
+		}
+#else
+# if HAVE_STRFTIME
+	      goto underlying_strftime;
+# endif
+#endif
+	    }
+	  DO_NUMBER (2, (tp->tm_year % 100 + 100) % 100);
+
+	case L_('Z'):
+	  if (change_case)
+	    {
+	      to_uppcase = 0;
+	      to_lowcase = 1;
+	    }
+
+#if HAVE_TZNAME
+	  /* The tzset() call might have changed the value.  */
+	  if (!(zone && *zone) && tp->tm_isdst >= 0)
+	    zone = tzname[tp->tm_isdst];
+#endif
+	  if (! zone)
+	    zone = "";		/* POSIX.2 requires the empty string here.  */
+
+#ifdef COMPILE_WIDE
+	  {
+	    /* The zone string is always given in multibyte form.  We have
+	       to transform it first.  */
+	    wchar_t *wczone;
+	    size_t len;
+	    widen (zone, wczone, len);
+	    cpy (len, wczone);
+	  }
+#else
+	  cpy (strlen (zone), zone);
+#endif
+	  break;
 
-	for (k = 0; next = array[k]; k++) {
-		length = strftime(string, MAXTIME, next, tm);
-		printf("%s\n", string);
+	case L_('z'):		/* ISO C99 extension.  */
+	  if (tp->tm_isdst < 0)
+	    break;
+
+	  {
+	    int diff;
+#if HAVE_TM_GMTOFF
+	    diff = tp->tm_gmtoff;
+#else
+	    if (ut)
+	      diff = 0;
+	    else
+	      {
+		struct tm gtm;
+		struct tm ltm;
+		time_t lt;
+
+		ltm = *tp;
+		lt = mktime (&ltm);
+
+		if (lt == (time_t) -1)
+		  {
+		    /* mktime returns -1 for errors, but -1 is also a
+		       valid time_t value.  Check whether an error really
+		       occurred.  */
+		    struct tm tm;
+
+		    if (! my_strftime_localtime_r (&lt, &tm)
+			|| ((ltm.tm_sec ^ tm.tm_sec)
+			    | (ltm.tm_min ^ tm.tm_min)
+			    | (ltm.tm_hour ^ tm.tm_hour)
+			    | (ltm.tm_mday ^ tm.tm_mday)
+			    | (ltm.tm_mon ^ tm.tm_mon)
+			    | (ltm.tm_year ^ tm.tm_year)))
+		      break;
+		  }
+
+		if (! my_strftime_gmtime_r (&lt, &gtm))
+		  break;
+
+		diff = tm_diff (&ltm, &gtm);
+	      }
+#endif
+
+	    if (diff < 0)
+	      {
+		add (1, *p = L_('-'));
+		diff = -diff;
+	      }
+	    else
+	      add (1, *p = L_('+'));
+
+	    diff /= 60;
+	    DO_NUMBER (4, (diff / 60) * 100 + diff % 60);
+	  }
+
+	case L_('\0'):		/* GNU extension: % at end of format.  */
+	    --f;
+	    /* Fall through.  */
+	default:
+	  /* Unknown format; output the format, including the '%',
+	     since this is most likely the right thing to do if a
+	     multibyte string has been misparsed.  */
+	bad_format:
+	  {
+	    int flen;
+	    for (flen = 1; f[1 - flen] != L_('%'); flen++)
+	      continue;
+	    cpy (flen, &f[1 - flen]);
+	  }
+	  break;
 	}
+    }
+
+  if (p && maxsize != 0)
+    *p = L_('\0');
+  return i;
+}
+
 
-	exit(0);
+#ifdef emacs
+/* For Emacs we have a separate interface which corresponds to the normal
+   strftime function plus the ut argument, but without the ns argument.  */
+size_t
+emacs_strftimeu (s, maxsize, format, tp, ut)
+      char *s;
+      size_t maxsize;
+      const char *format;
+      const struct tm *tp;
+      int ut;
+{
+  return my_strftime (s, maxsize, format, tp, ut, 0);
 }
-#endif	/* TEST_STRFTIME */
+#endif
diff --git a/missing_d/strtod.c b/missing_d/strtod.c
index cdcefe9f..2c4ee574 100644
--- a/missing_d/strtod.c
+++ b/missing_d/strtod.c
@@ -22,6 +22,9 @@
  *
  * Fall 2000: Changed to enforce C89 semantics, so that 0x... returns 0.
  * C99 has hexadecimal floating point numbers.
+ *
+ * Summer 2001. Try to make it smarter, so that a string like "0000"
+ * doesn't look like we failed. Sigh.
  */
 
 #if 0
@@ -36,8 +39,8 @@ register const char *s;
 register const char **ptr;
 {
 	double ret = 0.0;
-	const char *start = s;
-	const char *begin = NULL;
+	const char *start = s;		/* save original start of string */
+	const char *begin = NULL;	/* where the number really begins */
 	int success = 0;
 
 	/* optional white space */
@@ -98,7 +101,7 @@ register const char **ptr;
 	ret = atof(begin);
 
 out:
-	if (! success)
+	if (! success && s == begin)
 		s = start;	/* in case all we did was skip whitespace */
 
 	if (ptr)