File mutt-1.5.20-bnc559525.dif of Package mutt.4421

--- sendlib.c
+++ sendlib.c	2009-12-02 11:35:43.095929251 +0000
@@ -1630,9 +1630,9 @@ static int fold_one_header (FILE *fp, co
   dprint(4,(debugfile,"mwoh: pfx=[%s], tag=[%s], flags=%d value=[%s]\n",
 	    pfx, tag, flags, value));
 
-  if (fprintf (fp, "%s%s: ", NONULL (pfx), tag) < 0)
+  if (tag && *tag && fprintf (fp, "%s%s: ", NONULL (pfx), tag) < 0)
     return -1;
-  col = mutt_strlen (tag) + 2 + mutt_strlen (pfx);
+  col = mutt_strlen (tag) + (tag && *tag ? 2 : 0) + mutt_strlen (pfx);
 
   while (p && *p)
   {
@@ -1717,9 +1717,11 @@ static int write_one_header (FILE *fp, i
 			     int flags)
 {
   char *tagbuf, *valbuf, *t;
+  int is_from = ((end - start) > 5 &&
+		ascii_strncasecmp (start, "from ", 5) == 0);
 
   /* only pass through folding machinery if necessary for sending */
-  if (!(flags & CH_DISPLAY) && pfxw + max <= wraplen)
+  if (!(flags & CH_DISPLAY) && (pfxw + max <= wraplen || is_from))
   {
     valbuf = mutt_substrdup (start, end);
     dprint(4,(debugfile,"mwoh: buf[%s%s] short enough, "
@@ -1728,6 +1730,8 @@ static int write_one_header (FILE *fp, i
     if (pfx && *pfx)
       if (fputs (pfx, fp) == EOF)
 	return -1;
+    if (!(t = strchr (valbuf, ':')))
+      return 0;
     if (print_val (fp, pfx, valbuf, flags) < 0)
     {
       FREE(&valbuf);
@@ -1738,10 +1742,22 @@ static int write_one_header (FILE *fp, i
   else
   {
     t = strchr (start, ':');
-    tagbuf = mutt_substrdup (start, t);
-    valbuf = mutt_substrdup (t + 2, end);
+    if (t > end)
+    {
+      return 0;
+    }
+    if (is_from)
+    {
+      tagbuf = NULL;
+      valbuf = mutt_substrdup (start, end);
+    }
+    else
+    {
+      tagbuf = mutt_substrdup (start, t);
+      valbuf = mutt_substrdup (t + 2, end);
+    }
     dprint(4,(debugfile,"mwoh: buf[%s%s] too long, "
-	      "max width = %d > %dn",
+	      "max width = %d > %d\n",
 	      NONULL(pfx), valbuf, max, wraplen));
     if (fold_one_header (fp, tagbuf, valbuf, pfx, wraplen, flags) < 0)
       return -1;