X-Git-Url: http://git.madism.org/?p=apps%2Fmadmutt.git;a=blobdiff_plain;f=imap%2Fmessage.c;h=1f634afb3fe009b99c401ccee39af62a7d0afdb3;hp=8412c61d2fdd2e4d3c9b916ecdc60400eeb2be97;hb=f288d1771c814e6104da83e6f0f1761a40de1224;hpb=98cf5779d8184a74541be1bc61d15c5f35efd310

diff --git a/imap/message.c b/imap/message.c
index 8412c61..1f634af 100644
--- a/imap/message.c
+++ b/imap/message.c
@@ -291,6 +291,50 @@ int imap_read_headers (IMAP_DATA * idata, int msgbegin, int msgend)
   return msgend;
 }
 
+/* move all the headers from extra not present in base into base */
+static void mutt_merge_envelopes(ENVELOPE* base, ENVELOPE** extra)
+{
+  /* copies each existing element if necessary, and sets the element
+  * to NULL in the source so that envelope_delete doesn't leave us
+  * with dangling pointers. */
+#define MOVE_ELEM(h) if (!base->h) { base->h = (*extra)->h; (*extra)->h = NULL; }
+  MOVE_ELEM(return_path);
+  MOVE_ELEM(from);
+  MOVE_ELEM(to);
+  MOVE_ELEM(cc);
+  MOVE_ELEM(bcc);
+  MOVE_ELEM(sender);
+  MOVE_ELEM(reply_to);
+  MOVE_ELEM(mail_followup_to);
+  MOVE_ELEM(list_post);
+  MOVE_ELEM(message_id);
+  MOVE_ELEM(supersedes);
+  MOVE_ELEM(date);
+  MOVE_ELEM(x_label);
+  if (!base->refs_changed) {
+    MOVE_ELEM(references);
+  }
+  if (!base->irt_changed) {
+    MOVE_ELEM(in_reply_to);
+  }
+  /* real_subj is subordinate to subject */
+  if (!base->subject) {
+    base->subject = (*extra)->subject;
+    base->real_subj = (*extra)->real_subj;
+    (*extra)->subject = NULL;
+    (*extra)->real_subj = NULL;
+  }
+  /* spam and user headers should never be hashed, and the new envelope may
+   * have better values. Use new versions regardless. */
+  mutt_buffer_free (&base->spam);
+  string_list_wipe(&base->userhdrs);
+  MOVE_ELEM(spam);
+  MOVE_ELEM(userhdrs);
+#undef MOVE_ELEM
+  
+  envelope_delete(extra);
+}
+
 int imap_fetch_message (MESSAGE * msg, CONTEXT * ctx, int msgno)
 {
   IMAP_DATA *idata;