Update mime fields when piping a message with $pipe_decode set.

Programs that process the message may get confused if the original
mime fields are in the output.  Add the CH_MIME flag to strip mime
headers and CH_TXTPLAIN to add decoded text mime headers in their
place, just as <decode-copy> does.

However, make sure not to add the flags when printing, as printers
highly likely won't care and users probably don't want to see those
headers in their printout.

1 files changed, 8 insertions, 1 deletions

diff --git a/commands.c b/commands.c
index b88335d1..9a27614f 100644
--- a/commands.c
+++ b/commands.c
@@ -440,14 +440,21 @@ static void pipe_set_flags (int decode, int print, int *cmflags, int *chflags)
 {
   if (decode)
   {
-    *cmflags |= MUTT_CM_DECODE | MUTT_CM_CHARCONV;
     *chflags |= CH_DECODE | CH_REORDER;
+    *cmflags |= MUTT_CM_DECODE | MUTT_CM_CHARCONV;
 
     if (option (OPTWEED))
     {
       *chflags |= CH_WEED;
       *cmflags |= MUTT_CM_WEED;
     }
+
+    /* Just as with copy-decode, we need to update the
+     * mime fields to avoid confusing programs that may
+     * process the email.  However, we don't want to force
+     * those fields to appear in printouts. */
+    if (!print)
+      *chflags |= CH_MIME | CH_TXTPLAIN;
   }
 
   if (print)