From 004a19855a6ca4c0636f48db28f0fb902cfe2ffc Mon Sep 17 00:00:00 2001
From: nightwing <amirjanyan@gmail.com>
Date: Thu, 20 Nov 2014 23:23:46 +0400
Subject: [PATCH] do not throw for broken anchors since that can break editor

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

diff --git a/lib/ace/anchor.js b/lib/ace/anchor.js
index ff85c13b..39b78e0f 100644
--- a/lib/ace/anchor.js
+++ b/lib/ace/anchor.js
@@ -70,7 +70,6 @@ var Anchor = exports.Anchor = function(doc, row, column) {
      * @returns {Object}
      **/
     this.getPosition = function() {
-    //process.exit(2)
         return this.$clipPositionToDocument(this.row, this.column);
     };
 
@@ -107,7 +106,7 @@ var Anchor = exports.Anchor = function(doc, row, column) {
         if (delta.start.row > this.row)
             return;
             
-        var point = this.$getTransformedPoint(delta, {row: this.row, column: this.column});
+        var point = $getTransformedPoint(delta, {row: this.row, column: this.column}, this.$insertRight);
         this.setPosition(point.row, point.column, true);
     };
     
@@ -116,14 +115,13 @@ var Anchor = exports.Anchor = function(doc, row, column) {
         return (point1.row < point2.row) || (point1.row == point2.row && bColIsAfter);
     }
             
-    this.$getTransformedPoint = function (delta, point) {
+    function $getTransformedPoint(delta, point, moveIfEqual) {
         // Get delta info.
-        var moveIfEqual   = this.$insertRight;
-        var deltaIsInsert = (delta.action == "insert")
+        var deltaIsInsert = delta.action == "insert";
         var deltaRowShift = (deltaIsInsert ? 1 : -1) * (delta.end.row    - delta.start.row);
         var deltaColShift = (deltaIsInsert ? 1 : -1) * (delta.end.column - delta.start.column);
-        var deltaStart    = delta.start;
-        var deltaEnd      = (deltaIsInsert ? deltaStart : delta.end); // Collapse insert range.
+        var deltaStart = delta.start;
+        var deltaEnd = deltaIsInsert ? deltaStart : delta.end; // Collapse insert range.
         
         // DELTA AFTER POINT: No change needed.
         if ($pointsInOrder(point, deltaStart, moveIfEqual)) {
@@ -142,14 +140,13 @@ var Anchor = exports.Anchor = function(doc, row, column) {
         }
         
         // DELTA ENVELOPS POINT (delete only): Move point to delta start.
-        if (delta.action != "remove")
-            throw "Delete action expected.";
+        // TODO warn if delta.action != "remove" ?
         
         return {
             row: deltaStart.row,
             column: deltaStart.column
         };
-    };
+    }
 
     /**
      * Sets the anchor position to the specified row and column. If `noClip` is `true`, the position is not clipped.