From: Kevin McCarthy <kevin@8t8.us>
Date: Fri, 28 Dec 2018 00:08:36 +0000 (-0800)
Subject: Rfc2047 encode and fold X-Label when writing updates.
X-Git-Tag: mutt-1-11-2-rel~6
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=75f2445ca5e89ea16b47982fc63304f9464f5d85;p=mutt

Rfc2047 encode and fold X-Label when writing updates.

Also, add a missing "skip" in mutt_copy_hdr() for the non-simple case.

These fixes were backported from the kevin/mutt_protected_header branch.
---

diff --git a/copy.c b/copy.c
index af6e2691..f072869b 100644
--- a/copy.c
+++ b/copy.c
@@ -108,7 +108,7 @@ mutt_copy_hdr (FILE *in, FILE *out, LOFF_T off_start, LOFF_T off_end, int flags,
 	if ((flags & CH_UPDATE_IRT) &&
 	    ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
 	  continue;
-        if (flags & CH_UPDATE_LABEL &&
+        if ((flags & CH_UPDATE_LABEL) &&
             ascii_strncasecmp ("X-Label:", buf, 8) == 0)
           continue;
 
@@ -218,6 +218,9 @@ mutt_copy_hdr (FILE *in, FILE *out, LOFF_T off_start, LOFF_T off_end, int flags,
       if ((flags & CH_UPDATE_IRT) &&
 	  ascii_strncasecmp ("In-Reply-To:", buf, 12) == 0)
 	continue;
+      if ((flags & CH_UPDATE_LABEL) &&
+          ascii_strncasecmp ("X-Label:", buf, 8) == 0)
+        continue;
 
       /* Find x -- the array entry where this header is to be saved */
       if (flags & CH_REORDER)
@@ -418,13 +421,17 @@ mutt_copy_header (FILE *in, HEADER *h, FILE *out, int flags, const char *prefix)
       fprintf (out, "Lines: %d\n", h->lines);
   }
 
-  if (flags & CH_UPDATE_LABEL)
+  if ((flags & CH_UPDATE_LABEL) && h->env->x_label)
   {
-    h->xlabel_changed = 0;
-    if (h->env->x_label != NULL)
-      if (fprintf(out, "X-Label: %s\n", h->env->x_label) !=
-		  10 + strlen(h->env->x_label))
-        return -1;
+    if (!(flags & CH_DECODE))
+      rfc2047_encode_string (&h->env->x_label);
+    if (mutt_write_one_header (out, "X-Label", h->env->x_label,
+                               flags & CH_PREFIX ? prefix : 0,
+                               mutt_window_wrap_cols (MuttIndexWindow, Wrap),
+                               flags) == -1)
+      return -1;
+    if (!(flags & CH_DECODE))
+      rfc2047_decode (&h->env->x_label);
   }
 
   if ((flags & CH_NONEWLINE) == 0)