Prevent trying to match a failing color body regex repeatedly.

Emails with really long lines (e.g. spam), can suffer performance if a
complicated regex is matched to no effect over and over.  If the regex
failed at the beginning, it won't match at the end of another's regex
match range, so turn it off.

1 files changed, 4 insertions, 0 deletions

diff --git a/mutt_curses.h b/mutt_curses.h
index d12b5790..bd563f7b 100644
--- a/mutt_curses.h
+++ b/mutt_curses.h
@@ -153,6 +153,10 @@ typedef struct color_line
   short bg;
   int pair;
   struct color_line *next;
+
+  unsigned int stop_matching : 1; /* used by the pager for body patterns,
+                                     to prevent the color from being retried
+                                     once it fails. */
 } COLOR_LINE;
 
 #define MUTT_PROGRESS_SIZE      (1<<0)  /* traffic-based progress */