From fec4f414760ce3416a6513d002fdac19d2446cd9 Mon Sep 17 00:00:00 2001
From: stekkel <stekkel@7612ce4b-ef26-0410-bec9-ea0150e637f0>
Date: Wed, 11 Jun 2003 17:09:15 +0000
Subject: [PATCH] performance tweak

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@4994 7612ce4b-ef26-0410-bec9-ea0150e637f0
---
 functions/mime.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/functions/mime.php b/functions/mime.php
index 51d84b24..57ab2981 100644
--- a/functions/mime.php
+++ b/functions/mime.php
@@ -574,6 +574,7 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
         $encoded = false;
         /* if encoded words are not separated by a linear-space-white we still catch them */
         $j = $i-1;
+	if ($chunk{0} === '=') { /* performance, saves an unnessecarry preg call */
         while ($match = preg_match('/^(.*)=\?([^?]*)\?(Q|B)\?([^?]*)\?=(.*)$/Ui',$chunk,$res)) {
             /* if the last chunk isn't an encoded string then put back the space, otherwise don't */
             if ($iLastMatch !== $j) {
@@ -615,6 +616,7 @@ function decodeHeader ($string, $utfencode=true,$htmlsave=true) {
             $chunk = $res[5];
             $encoded = true;
         }
+	}
         if (!$encoded) {
             if ($htmlsave) {
                 $ret .= '&nbsp;';
-- 
2.25.1