Import cvs-1.10.7. There are a number of nasty bugs that have been fixed.

Obtained from:  cyclic.com

16 files changed, 141 insertions, 63 deletions

diff --git a/contrib/cvs/diff/ChangeLog b/contrib/cvs/diff/ChangeLog
index 3ebde5d..a435182 100644
--- a/contrib/cvs/diff/ChangeLog
+++ b/contrib/cvs/diff/ChangeLog
@@ -1,3 +1,70 @@
+1999-05-06  Jim Kingdon  <http://www.cyclic.com>
+
+	* Makefile.in (DISTFILES): Remove libdiff.mak.
+	* libdiff.mak: Removed; we are back to a single makefile for
+	Visual C++ version 4.
+
+1999-04-29  Jim Kingdon  <http://www.cyclic.com>
+
+	* diff.c (diff_run): Use separate statement for setjmp call and if
+	statement.  This is better style in general (IMHO) but in the case
+	of setjmp the UNICOS compiler apparently cares (I don't have the
+	standard handy, but there are lots of legitimate restrictions on
+	how you can call setjmp).
+
+1999-04-26  Jim Kingdon  <http://www.cyclic.com>
+
+	* Makefile.in (DISTFILES): Add libdiff.dsp libdiff.mak .cvsignore.
+
+1999-04-26 (submitted 1999-03-24) John O'Connor  <john@shore.net>
+
+	* libdiff.dsp: new file. MSVC project file used to build the library.
+
+	* libdiff.mak: new file. Makefile for building from the command-line.
+
+	* .cvsignore: Removed un-used entries related to MSVC.  Added
+	entries to ignore directories generated by the NT build, Debug
+	and Release.
+
+1999-03-24  Larry Jones  <larry.jones@sdrc.com>
+	and Olaf Brandes
+
+	* diff3.c (diff3_run): Use a separate stream for the input to
+	output_diff3_merge instead of reopening stdin to avoid problems
+	with leaving it open.
+
+1999-02-17  Jim Kingdon  <http://www.cyclic.com>
+	and Hallvard B Furuseth.
+
+	* util.c: Use __STDC__ consistently with ./system.h.
+	* system.h: Add comment about PARAMS.
+
+1999-01-12  Jim Kingdon  <http://www.cyclic.com>
+
+	* Makefile.in, analyze.c, cmpbuf.c, cmpbuf.h, context.c, diff.c,
+	diff.h, diff3.c, diffrun.h, dir.c, ed.c, io.c, normal.c, system.h,
+	util.c: Remove paragraph containing the old snail mail address of
+	the Free Software Foundation.
+
+1998-09-21  Jim Kingdon  <kingdon@harvey.cyclic.com>
+
+	* util.c (printf_output): Make msg static; avoids auto
+	initializer, which is not portable to SunOS4 /bin/cc.
+	Reported by Mike Sutton@SAIC.
+
+1998-09-14  Jim Kingdon  <kingdon@harvey.cyclic.com>
+
+	* Makefile.in (DISTFILES): Add diagmeet.note.
+
+1998-08-15  Jim Kingdon  <kingdon@harvey.cyclic.com>
+
+	* diffrun.h (struct diff_callbacks): Change calling convention of
+	write_output so that a zero length means to output zero bytes.
+	The cvs_output convention is just too ugly/error-prone.
+	* util.c (printf_output): Rewrite to parse format string
+	overselves rather than calling vasprintf, which cannot be
+	implemented in portable C.
+
 1998-08-06  David Masterson of kla-tencor.com
 
 	* util.c (flush_output): Don't prototype.
diff --git a/contrib/cvs/diff/Makefile.in b/contrib/cvs/diff/Makefile.in
index b47d4c1..31f4910 100644
--- a/contrib/cvs/diff/Makefile.in
+++ b/contrib/cvs/diff/Makefile.in
@@ -12,10 +12,6 @@
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 # GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU DIFF; see the file COPYING.  If not, write to
-# the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 
 #### Start of system configuration section. ####
 
@@ -47,7 +43,8 @@ SOURCES = diff.c diff3.c analyze.c cmpbuf.c cmpbuf.h io.c context.c ed.c \
 	diffrun.h
 OBJECTS = diff.o diff3.o analyze.o cmpbuf.o dir.o io.o util.o \
 	context.o ed.o ifdef.o normal.o side.o version.o
-DISTFILES = $(SOURCES) ChangeLog build_diff.com Makefile.in
+DISTFILES = $(SOURCES) ChangeLog build_diff.com Makefile.in diagmeet.note \
+	libdiff.dsp .cvsignore
 
 all: libdiff.a
 
diff --git a/contrib/cvs/diff/analyze.c b/contrib/cvs/diff/analyze.c
index 0bda3cf..f292594 100644
--- a/contrib/cvs/diff/analyze.c
+++ b/contrib/cvs/diff/analyze.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 /* The basic algorithm is described in:
    "An O(ND) Difference Algorithm and its Variations", Eugene Myers,
diff --git a/contrib/cvs/diff/cmpbuf.c b/contrib/cvs/diff/cmpbuf.c
index e95a8f9..2820dfa 100644
--- a/contrib/cvs/diff/cmpbuf.c
+++ b/contrib/cvs/diff/cmpbuf.c
@@ -11,9 +11,7 @@
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   */
 
 #include "system.h"
 #include "cmpbuf.h"
diff --git a/contrib/cvs/diff/cmpbuf.h b/contrib/cvs/diff/cmpbuf.h
index e3852b7..b7b965d 100644
--- a/contrib/cvs/diff/cmpbuf.h
+++ b/contrib/cvs/diff/cmpbuf.h
@@ -13,8 +13,6 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 size_t buffer_lcm PARAMS((size_t, size_t));
diff --git a/contrib/cvs/diff/context.c b/contrib/cvs/diff/context.c
index e843734..c4562c9 100644
--- a/contrib/cvs/diff/context.c
+++ b/contrib/cvs/diff/context.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "diff.h"
 
diff --git a/contrib/cvs/diff/diff.c b/contrib/cvs/diff/diff.c
index 3467b53..e5f7e42 100644
--- a/contrib/cvs/diff/diff.c
+++ b/contrib/cvs/diff/diff.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 /* GNU DIFF was written by Mike Haertel, David Hayes,
    Richard Stallman, Len Tower, and Paul Eggert.  */
@@ -690,7 +688,8 @@ diff_run (argc, argv, out, callbacks_arg)
 
   /* Set the jump buffer, so that diff may abort execution without
      terminating the process. */
-  if ((val = setjmp (diff_abort_buf)) != 0)
+  val = setjmp (diff_abort_buf);
+  if (val != 0)
     {
       optind = optind_old;
       if (opened_file)
diff --git a/contrib/cvs/diff/diff.h b/contrib/cvs/diff/diff.h
index 6107e62..642138d 100644
--- a/contrib/cvs/diff/diff.h
+++ b/contrib/cvs/diff/diff.h
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "system.h"
 #include <stdio.h>
diff --git a/contrib/cvs/diff/diff3.c b/contrib/cvs/diff/diff3.c
index 64867f4..e3be150 100644
--- a/contrib/cvs/diff/diff3.c
+++ b/contrib/cvs/diff/diff3.c
@@ -11,9 +11,7 @@
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU 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., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+   */
 
 /* Written by Randy Smith */
 /* Librarification by Tim Pierce */
@@ -459,13 +457,15 @@ diff3_run (argc, argv, out, callbacks_arg)
 			       tag_strings[0], tag_strings[1], tag_strings[2]);
   else if (merge)
     {
-      if (! freopen (file[rev_mapping[FILE0]], "r", stdin))
+      FILE *mfp = fopen (file[rev_mapping[FILE0]], "r");
+      if (! mfp)
 	diff3_perror_with_exit (file[rev_mapping[FILE0]]);
-      conflicts_found
-	= output_diff3_merge (stdin, diff3, mapping, rev_mapping,
+      conflicts_found = output_diff3_merge (mfp, diff3, mapping, rev_mapping,
 			      tag_strings[0], tag_strings[1], tag_strings[2]);
-      if (ferror (stdin))
+      if (ferror (mfp))
 	diff3_fatal ("read error");
+      if (fclose(mfp) != 0)
+	perror_with_name (file[rev_mapping[FILE0]]);
     }
   else
     {
diff --git a/contrib/cvs/diff/diffrun.h b/contrib/cvs/diff/diffrun.h
index 28c1f45..08fbd0d 100644
--- a/contrib/cvs/diff/diffrun.h
+++ b/contrib/cvs/diff/diffrun.h
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #ifndef DIFFRUN_H
 #define DIFFRUN_H
@@ -41,12 +39,14 @@ struct diff_callbacks
 {
   /* Write output.  This function just writes a string of a given
      length to the output file.  The default is to fwrite to OUTFILE.
-     If this callback is defined, flush_output must also be defined.  */
+     If this callback is defined, flush_output must also be defined.
+     If the length is zero, output zero bytes.  */
   void (*write_output) DIFFPARAMS((char const *, size_t));
   /* Flush output.  The default is to fflush OUTFILE.  If this
      callback is defined, write_output must also be defined.  */
   void (*flush_output) DIFFPARAMS((void));
-  /* Write to stdout.  This is called for version and help messages.  */
+  /* Write a '\0'-terminated string to stdout.
+     This is called for version and help messages.  */
   void (*write_stdout) DIFFPARAMS((char const *));
   /* Print an error message.  The first argument is a printf format,
      and the next two are parameters.  The default is to print a
diff --git a/contrib/cvs/diff/dir.c b/contrib/cvs/diff/dir.c
index 6eef9a6..fae74e8 100644
--- a/contrib/cvs/diff/dir.c
+++ b/contrib/cvs/diff/dir.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "diff.h"
 
diff --git a/contrib/cvs/diff/ed.c b/contrib/cvs/diff/ed.c
index 6b00d13..74fc2a4 100644
--- a/contrib/cvs/diff/ed.c
+++ b/contrib/cvs/diff/ed.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "diff.h"
 
diff --git a/contrib/cvs/diff/io.c b/contrib/cvs/diff/io.c
index 6605915..730c09a 100644
--- a/contrib/cvs/diff/io.c
+++ b/contrib/cvs/diff/io.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "diff.h"
 
diff --git a/contrib/cvs/diff/normal.c b/contrib/cvs/diff/normal.c
index 75dae88..b1f4955 100644
--- a/contrib/cvs/diff/normal.c
+++ b/contrib/cvs/diff/normal.c
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 
 #include "diff.h"
diff --git a/contrib/cvs/diff/system.h b/contrib/cvs/diff/system.h
index 7812b76..76bc163 100644
--- a/contrib/cvs/diff/system.h
+++ b/contrib/cvs/diff/system.h
@@ -13,9 +13,7 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 /* We must define `volatile' and `const' first (the latter inside config.h),
    so that they're used consistently in all system includes.  */
@@ -29,6 +27,9 @@ the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
 #include <sys/types.h>
 #include <sys/stat.h>
 
+/* Note that PARAMS is just internal to the diff library; diffrun.h
+   has its own mechanism, which will hopefully be less likely to
+   conflict with the library's caller's namespace.  */
 #if __STDC__
 #define PARAMS(args) args
 #define VOID void
diff --git a/contrib/cvs/diff/util.c b/contrib/cvs/diff/util.c
index 1b28170..c4d2d71 100644
--- a/contrib/cvs/diff/util.c
+++ b/contrib/cvs/diff/util.c
@@ -13,13 +13,11 @@ but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
-You should have received a copy of the GNU General Public License
-along with GNU DIFF; see the file COPYING.  If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
+*/
 
 #include "diff.h"
 
-#ifdef __STDC__
+#if __STDC__
 #include <stdarg.h>
 #else
 #include <varargs.h>
@@ -340,14 +338,14 @@ write_output (text, len)
 
 /* Printf something to the output file.  */
 
-#ifdef __STDC__
+#if __STDC__
 #define VA_START(args, lastarg) va_start(args, lastarg)
 #else /* ! __STDC__ */
 #define VA_START(args, lastarg) va_start(args)
 #endif /* __STDC__ */
 
 void
-#if defined (__STDC__)
+#if __STDC__
 printf_output (const char *format, ...)
 #else
 printf_output (format, va_alist)
@@ -360,17 +358,51 @@ printf_output (format, va_alist)
   VA_START (args, format);
   if (callbacks && callbacks->write_output)
     {
-      char *p;
+      /* We implement our own limited printf-like functionality (%s, %d,
+	 and %c only).  Callers who want something fancier can use
+	 sprintf.  */
+      const char *p = format;
+      char *q;
+      char *str;
+      int num;
+      int ch;
+      unsigned char buf[100];
+
+      while ((q = strchr (p, '%')) != NULL)
+	{
+	  static const char msg[] =
+	    "\ninternal error: bad % in printf_output\n";
+	  (*callbacks->write_output) (p, q - p);
 
-      p = NULL;
-      vasprintf (&p, format, args);
-      if (p == NULL)
-	fatal ("out of memory");
+	  switch (q[1])
+	    {
+	    case 's':
+	      str = va_arg (args, char *);
+	      (*callbacks->write_output) (str, strlen (str));
+	      break;
+	    case 'd':
+	      num = va_arg (args, int);
+	      sprintf (buf, "%d", num);
+	      (*callbacks->write_output) (buf, strlen (buf));
+	      break;
+	    case 'c':
+	      ch = va_arg (args, int);
+	      buf[0] = ch;
+	      (*callbacks->write_output) (buf, 1);
+	      break;
+	    default:
+	      (*callbacks->write_output) (msg, sizeof (msg) - 1);
+	      /* Don't just keep going, because q + 1 might point to the
+		 terminating '\0'.  */
+	      goto out;
+	    }
+	  p = q + 2;
+	}
       (*callbacks->write_output) (p, strlen (p));
-      free (p);
     }
   else
     vfprintf (outfile, format, args);
+ out:
   va_end (args);
 }