From abf5f7492f192bbb2e49ea9c14cc88a24d9bf860 Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Sun, 14 Jul 2013 08:22:15 +0400
Subject: [PATCH] recompute longestLine when vScroll changes

---
 lib/ace/virtual_renderer.js | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/lib/ace/virtual_renderer.js b/lib/ace/virtual_renderer.js
index 88f8d79a..e8c9c402 100644
--- a/lib/ace/virtual_renderer.js
+++ b/lib/ace/virtual_renderer.js
@@ -925,6 +925,16 @@ var VirtualRenderer = function(container, theme) {
 
         offset = this.scrollTop - firstRowScreen * lineHeight;
 
+        var changes = 0;
+        // Horizontal scrollbar visibility may have changed, which changes
+        // the client height of the scroller
+        if (hScrollChanged || vScrollChanged) {
+            changes = this.$updateCachedSize(true, this.gutterWidth, this.$size.width, this.$size.height);
+            this._signal("scrollbarVisibilityChanged");
+            if (vScrollChanged)
+                longestLine = this.$getLongestLine();
+        }
+        
         this.layerConfig = {
             width : longestLine,
             padding : this.$padding,
@@ -947,13 +957,6 @@ var VirtualRenderer = function(container, theme) {
         this.content.style.width = longestLine + 2 * this.$padding + "px";
         this.content.style.height = minHeight + "px";
 
-        var changes = 0;
-        // Horizontal scrollbar visibility may have changed, which changes
-        // the client height of the scroller
-        if (hScrollChanged || vScrollChanged) {
-            changes = this.$updateCachedSize(true, this.gutterWidth, this.$size.width, this.$size.height);
-            this._signal("scrollbarVisibilityChanged");
-        }
         return changes;
     };