From 3b1d410b4ede2fd54be23bb47da5950535df9b04 Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Fri, 24 Jan 2014 13:05:18 -0500
Subject: [PATCH] Fix confusing intersect/filter methods naming/behaviour.

---
 program/lib/Roundcube/rcube_result_thread.php |   37 ++++++++++++++++++++++---------------
 1 files changed, 22 insertions(+), 15 deletions(-)

diff --git a/program/lib/Roundcube/rcube_result_thread.php b/program/lib/Roundcube/rcube_result_thread.php
index 7657550..ceaaf59 100644
--- a/program/lib/Roundcube/rcube_result_thread.php
+++ b/program/lib/Roundcube/rcube_result_thread.php
@@ -453,7 +453,7 @@
 
         // when sorting search result it's good to make the index smaller
         if ($index->count() != $this->count_messages()) {
-            $index->intersect($this->get());
+            $index->filter($this->get());
         }
 
         $result  = array_fill_keys($index->get(), null);
@@ -606,33 +606,39 @@
         // arrays handling is much more expensive
         // For the following structure: THREAD (2)(3 6 (4 23)(44 7 96))
         // -- 2
-        //
         // -- 3
         //     \-- 6
         //         |-- 4
         //         |    \-- 23
         //         |
         //         \-- 44
-        //              \-- 7
-        //                   \-- 96
+        //               \-- 7
+        //                    \-- 96
         //
         // The output will be: 2,3^1:6^2:4^3:23^2:44^3:7^4:96
 
         if ($str[$begin] != '(') {
-            $stop = $begin + strspn($str, '1234567890', $begin, $end - $begin);
-            $msg  = substr($str, $begin, $stop - $begin);
-            if (!$msg) {
+            // find next bracket
+            $stop      = $begin + strcspn($str, '()', $begin, $end - $begin);
+            $messages  = explode(' ', trim(substr($str, $begin, $stop - $begin)));
+
+            if (empty($messages)) {
                 return $node;
             }
 
-            $this->meta['messages']++;
-
-            $node .= ($depth ? self::SEPARATOR_ITEM.$depth.self::SEPARATOR_LEVEL : '').$msg;
-
-            if ($stop + 1 < $end) {
-                $node .= $this->parse_thread($str, $stop + 1, $end, $depth + 1);
+            foreach ($messages as $msg) {
+                if ($msg) {
+                    $node .= ($depth ? self::SEPARATOR_ITEM.$depth.self::SEPARATOR_LEVEL : '').$msg;
+                    $this->meta['messages']++;
+                    $depth++;
+                }
             }
-        } else {
+
+            if ($stop < $end) {
+                $node .= $this->parse_thread($str, $stop, $end, $depth);
+            }
+        }
+        else {
             $off = $begin;
             while ($off < $end) {
                 $start = $off;
@@ -649,7 +655,8 @@
                     if ($p1 !== false && $p1 < $p) {
                         $off = $p1 + 1;
                         $n++;
-                    } else {
+                    }
+                    else {
                         $off = $p + 1;
                         $n--;
                     }

--
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