From 0f15219a93c7f6de97223d004125fb32438ffaf7 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Sat, 12 Oct 2013 13:03:31 +0200
Subject: Fix text wrapping issue with long unwrappable lines (#1489371)

---
 program/lib/Roundcube/rcube_mime.php | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

(limited to 'program/lib/Roundcube/rcube_mime.php')

diff --git a/program/lib/Roundcube/rcube_mime.php b/program/lib/Roundcube/rcube_mime.php
index 96a8eac61..9c2220328 100644
--- a/program/lib/Roundcube/rcube_mime.php
+++ b/program/lib/Roundcube/rcube_mime.php
@@ -637,7 +637,8 @@ class rcube_mime
                     if ($nextChar === ' ' || $nextChar === $separator) {
                         $afterNextChar = mb_substr($string, $width + 1, 1);
 
-                        if ($afterNextChar === false) {
+                        // Note: mb_substr() does never return False
+                        if ($afterNextChar === false || $afterNextChar === '') {
                             $subString .= $nextChar;
                         }
 
@@ -650,24 +651,23 @@ class rcube_mime
                             $subString = mb_substr($subString, 0, $spacePos);
                             $cutLength = $spacePos + 1;
                         }
-                        else if ($cut === false && $breakPos === false) {
-                            $subString = $string;
-                            $cutLength = null;
-                        }
                         else if ($cut === false) {
                             $spacePos = mb_strpos($string, ' ', 0);
 
-                            if ($spacePos !== false && $spacePos < $breakPos) {
+                            if ($spacePos !== false && ($breakPos === false || $spacePos < $breakPos)) {
                                 $subString = mb_substr($string, 0, $spacePos);
                                 $cutLength = $spacePos + 1;
                             }
+                            else if ($breakPos === false) {
+                                $subString = $string;
+                                $cutLength = null;
+                            }
                             else {
                                 $subString = mb_substr($string, 0, $breakPos);
                                 $cutLength = $breakPos + 1;
                             }
                         }
                         else {
-                            $subString = mb_substr($subString, 0, $width);
                             $cutLength = $width;
                         }
                     }
-- 
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