#
# Add an extra option to set the DateFormat used in log output.
#
# Patch by Steve McIntyre <steve@einval.com>
diff -ruN cvs-1.12.13-old/doc/cvs.texinfo cvs-1.12.13/doc/cvs.texinfo
--- cvs-1.12.13-old/doc/cvs.texinfo	2005-09-23 10:02:53.000000000 +0800
+++ cvs-1.12.13/doc/cvs.texinfo	2006-02-26 23:03:05.000000000 +0800
@@ -14840,9 +14840,17 @@
 group to using @code{cvs admin} to change the default keyword
 substitution mode, lock revisions, unlock revisions, and
 replace the log message, use @samp{UserAdminOptions=klum}.
-@end table
-
 
+@cindex DateFormat, in CVSROOT/config
+@item DateFormat=@var{value}
+Control the output format of dates from cvs. cvs version 1.12.x
+changed the default format to use ``iso8601'' dates, which are
+better for many reasons. However, old scripts/programs written to
+parse the output of various cvs commands (especially cvs log) may
+not cope with the change in date format (e.g. gcvs). The default
+value of DateFormat will be ``iso8601'', but if you need temporary
+backwards-compatibility set DateFormat=old.
+@end table
 
 @c ---------------------------------------------------------------------
 @node Environment variables
diff -ruN cvs-1.12.13-old/src/log.c cvs-1.12.13/src/log.c
--- cvs-1.12.13-old/src/log.c	2005-03-22 21:19:57.000000000 +0800
+++ cvs-1.12.13/src/log.c	2006-02-26 23:03:05.000000000 +0800
@@ -1607,8 +1607,12 @@
 		  &sec);
     if (year < 1900)
 	year += 1900;
-    sprintf (buf, "%04d-%02d-%02d %02d:%02d:%02d +0000", year, mon, mday,
-	     hour, min, sec);
+    if ('-' == datesep)
+        sprintf (buf, "%04d%c%02d%c%02d %02d:%02d:%02d +0000", year, datesep,
+                 mon, datesep, mday, hour, min, sec);
+    else
+        sprintf (buf, "%04d%c%02d%c%02d %02d:%02d:%02d", year, datesep,
+                 mon, datesep, mday, hour, min, sec);
     cvs_output_tagged ("date", buf);
 
     cvs_output_tagged ("text", ";  author: ");
diff -ruN cvs-1.12.13-old/src/main.c cvs-1.12.13/src/main.c
--- cvs-1.12.13-old/src/main.c	2006-02-26 23:03:04.000000000 +0800
+++ cvs-1.12.13/src/main.c	2006-02-26 23:10:12.000000000 +0800
@@ -1371,9 +1371,19 @@
     static char buf[sizeof ("yyyy-mm-dd HH:MM:SS -HHMM")];
     /* Convert to a time in the local time zone.  */
     struct tm ltm = *(localtime (&unixtime));
-
-    if (!my_strftime (buf, sizeof (buf), "%Y-%m-%d %H:%M:%S %z", &ltm, 0, 0))
-	return NULL;
+    char *format = NULL;
+  
+    switch (datesep)
+    {
+        case '/':
+            format = "%Y/%m/%d %H:%M:%S";
+            break;
+        default:
+            format = "%Y-%m-%d %H:%M:%S %z";
+            break;
+    }
+    if (my_strftime (buf, sizeof (buf), format, &ltm, 0, 0) == 0)
+        return NULL;
 
     return xstrdup (buf);
 }
@@ -1388,9 +1398,19 @@
     static char buf[sizeof ("yyyy-mm-dd HH:MM:SS -HHMM")];
     /* Convert to a time in the local time zone.  */
     struct tm ltm = *(gmtime (&unixtime));
-
-    if (!my_strftime (buf, sizeof (buf), "%Y-%m-%d %H:%M:%S %z", &ltm, 0, 0))
-	return NULL;
+    char *format = NULL;
+  
+    switch (datesep)
+    {
+        case '/':
+            format = "%Y/%m/%d %H:%M:%S";
+            break;
+        default:
+            format = "%Y-%m-%d %H:%M:%S %z";
+            break;
+    }
+    if (my_strftime (buf, sizeof (buf), format, &ltm, 0, 0) == 0)
+        return NULL;
 
     return xstrdup (buf);
 }
diff -ruN cvs-1.12.13-old/src/parseinfo.c cvs-1.12.13/src/parseinfo.c
--- cvs-1.12.13-old/src/parseinfo.c	2005-09-06 12:40:37.000000000 +0800
+++ cvs-1.12.13/src/parseinfo.c	2006-02-26 23:03:05.000000000 +0800
@@ -626,6 +626,19 @@
 		retval->logHistory = xstrdup (p);
 	    }
 	}
+    /* grab FreeBSD date format idea */
+    else if (strcmp (line, "DateFormat") == 0)
+    {
+        if (strcmp (p, "old") == 0)
+        {
+            datesep = '/';
+        }
+        else if (strcmp (p, "iso8601") == 0)
+        {
+            datesep = '-';
+        }
+    }
+    /* end grabbing */
 	else if (strcmp (line, "RereadLogAfterVerify") == 0)
 	{
 	    if (!strcasecmp (p, "never"))
diff -ruN cvs-1.12.13-old/src/rcs.c cvs-1.12.13/src/rcs.c
--- cvs-1.12.13-old/src/rcs.c	2006-02-26 23:03:04.000000000 +0800
+++ cvs-1.12.13/src/rcs.c	2006-02-26 23:03:05.000000000 +0800
@@ -33,6 +33,8 @@
 # endif
 #endif
 
+int datesep = '-';
+
 /* The RCS -k options, and a set of enums that must match the array.
    These come first so that we can use enum kflag in function
    prototypes.  */
@@ -3537,8 +3539,8 @@
 		   &sec);
     if (year < 1900)
 	year += 1900;
-    sprintf (buf, "%04d/%02d/%02d %02d:%02d:%02d", year, mon, mday,
-	     hour, min, sec);
+    sprintf (buf, "%04d%c%02d%c%02d %02d:%02d:%02d", year, datesep, mon,
+             datesep, mday, hour, min, sec);
     return xstrdup (buf);
 }
 
diff -ruN cvs-1.12.13-old/src/rcs.h cvs-1.12.13/src/rcs.h
--- cvs-1.12.13-old/src/rcs.h	2005-03-18 06:36:24.000000000 +0800
+++ cvs-1.12.13/src/rcs.h	2006-02-26 23:03:05.000000000 +0800
@@ -254,6 +254,7 @@
 void RCS_setlocalid (const char *, unsigned int, void **, const char *arg);
 char *make_file_label (const char *, const char *, RCSNode *);
 
+extern int datesep;
 extern bool preserve_perms;
 
 /* From import.c.  */