$NetBSD: patch-ai,v 1.1 2011/02/16 19:19:28 shattered Exp $

Highlight folded header lines properly (PR 36612)

--- states/hl/mail.st.orig	2003-03-05 08:26:33.000000000 +0100
+++ states/hl/mail.st	2007-07-05 09:08:04.000000000 +0200
@@ -27,7 +27,7 @@ state mail_header extends Highlight
   END {
     comment_face (true);
   }
-  /:/ {
+  /(:|^[ \t])/ {
     language_print ($0);
     return;
   }