diff --git a/lib/ace/background_tokenizer.js b/lib/ace/background_tokenizer.js
index cb3ffe23..4b82f19a 100644
--- a/lib/ace/background_tokenizer.js
+++ b/lib/ace/background_tokenizer.js
@@ -32,6 +32,7 @@ define(function(require, exports, module) {
 "use strict";
 
 var oop = require("./lib/oop");
+var lang = require("./lib/lang");
 var EventEmitter = require("./lib/event_emitter").EventEmitter;
 
 
@@ -187,14 +188,15 @@ var BackgroundTokenizer = function(tokenizer, editor) {
             this.lines.splice(startRow, len + 1, null);
             this.states.splice(startRow, len + 1, null);
         } else {
-            var args = Array(len + 1);
-            args.unshift(startRow, 1);
-            this.lines.splice.apply(this.lines, args);
-            this.states.splice.apply(this.states, args);
+            this.lines.splice( startRow, 1);
+            this.states.splice(startRow, 1);
+            var toInsert = Array(len + 1);
+            lang.spliceIntoArray(this.lines,  startRow, toInsert);
+            lang.spliceIntoArray(this.states, startRow, toInsert);
         }
-
+        
         this.currentLine = Math.min(startRow, this.currentLine, this.doc.getLength());
-
+        
         this.stop();
     };
 
diff --git a/lib/ace/edit_session.js b/lib/ace/edit_session.js
index 0d4df080..cd14c1a5 100644
--- a/lib/ace/edit_session.js
+++ b/lib/ace/edit_session.js
@@ -1723,15 +1723,15 @@ var EditSession = function(text, mode) {
             } else {
                 var args;
                 if (useWrapMode) {
-                    args = [firstRow, 0];
-                    for (var i = 0; i < len; i++) args.push([]);
-                    this.$wrapData.splice.apply(this.$wrapData, args);
+                    var toInsert = [];
+                    for (var i = 0; i < len; i++)
+                        toInsert.push([]);
+                    lang.spliceIntoArray(this.$wrapData, firstRow, toInsert);
                 } else {
-                    args = Array(len);
-                    args.unshift(firstRow, 0);
-                    this.$rowLengthCache.splice.apply(this.$rowLengthCache, args);
+                    var toInsert = Array(len);
+                    lang.spliceIntoArray(this.$rowLengthCache, firstRow, toInsert);
                 }
-
+                
                 // If some new line is added inside of a foldLine, then split
                 // the fold line up.
                 var foldLines = this.$foldData;
diff --git a/lib/ace/edit_session/folding.js b/lib/ace/edit_session/folding.js
index 9df35593..1563bd67 100644
--- a/lib/ace/edit_session/folding.js
+++ b/lib/ace/edit_session/folding.js
@@ -31,6 +31,7 @@
 define(function(require, exports, module) {
 "use strict";
 
+var lang = require("../lib/lang");
 var Range = require("../range").Range;
 var FoldLine = require("./fold_line").FoldLine;
 var Fold = require("./fold").Fold;
@@ -836,9 +837,8 @@ function Folding() {
         } else if (delta.action == "delete") {
             this.foldWidgets.splice(firstRow, len + 1, null);
         } else {
-            var args = Array(len + 1);
-            args.unshift(firstRow, 1);
-            this.foldWidgets.splice.apply(this.foldWidgets, args);
+            this.foldWidgets.splice(firstRow, 1);
+            lang.spliceIntoArray(this.foldWidgets, firstRow, Array(len + 1));
         }
     };
 
diff --git a/lib/ace/layer/gutter.js b/lib/ace/layer/gutter.js
index 82dcf245..24f9c430 100644
--- a/lib/ace/layer/gutter.js
+++ b/lib/ace/layer/gutter.js
@@ -111,9 +111,8 @@ var Gutter = function(parentEl) {
         } else if (delta.action == "delete") {
             this.$annotations.splice(firstRow, len + 1, null);
         } else {
-            var args = new Array(len + 1);
-            args.unshift(firstRow, 1);
-            this.$annotations.splice.apply(this.$annotations, args);
+            this.$annotations.splice(firstRow, 1);
+            lang.spliceIntoArray(this.$annotations, firstRow, new Array(len + 1));
         }
     };
 
diff --git a/lib/ace/lib/lang.js b/lib/ace/lib/lang.js
index 4405b5c2..e0e9d826 100644
--- a/lib/ace/lib/lang.js
+++ b/lib/ace/lib/lang.js
@@ -123,6 +123,20 @@ exports.arrayRemove = function(array, value) {
   }
 };
 
+/*
+ * Splice the items in `a2` into `a1` at position `offset`.
+ */
+exports.spliceIntoArray = function(a1, offset, a2) {
+    
+    // Handle negative offsets.
+    if (offset < 0)
+        offset = Math.max(a1.length + offset, 0);
+    
+    // Splice.
+    for (var i = 0; i < a2.length; i++)
+        a1.splice(i + offset, 0, a2[i]);
+}
+
 exports.escapeRegExp = function(str) {
     return str.replace(/([.*+?^${}()|[\]\/\\])/g, '\\$1');
 };
diff --git a/lib/ace/line_widgets.js b/lib/ace/line_widgets.js
index 4023bd55..7cbe9809 100644
--- a/lib/ace/line_widgets.js
+++ b/lib/ace/line_widgets.js
@@ -32,6 +32,7 @@ define(function(require, exports, module) {
 "use strict";
 
 var oop = require("./lib/oop");
+var lang = require("./lib/lang");
 var dom = require("./lib/dom");
 var Range = require("./range").Range;
 
@@ -130,9 +131,7 @@ function LineWidgets(session) {
             }, this);
             this.$updateRows();
         } else {
-            var args = Array(len);
-            args.unshift(startRow, 0);
-            cells.splice.apply(cells, args);
+            lang.spliceIntoArray(cells, startRow, new Array(len));
             this.$updateRows();
         }
     };
diff --git a/lib/ace/mode/asciidoc_highlight_rules.js b/lib/ace/mode/asciidoc_highlight_rules.js
index c0d1a305..308fc8e4 100644
--- a/lib/ace/mode/asciidoc_highlight_rules.js
+++ b/lib/ace/mode/asciidoc_highlight_rules.js
@@ -32,6 +32,7 @@ define(function(require, exports, module) {
 "use strict";
 
 var oop = require("../lib/oop");
+var lang = require("../lib/lang");
 var TextHighlightRules = require("./text_highlight_rules").TextHighlightRules;
 
 var AsciidocHighlightRules = function() {
@@ -215,13 +216,14 @@ var AsciidocHighlightRules = function() {
         for (var i = stateRules.length; i--; ) {
             var rule = stateRules[i];
             if (rule.include || typeof rule == "string") {
-                var args = [i, 1].concat(this.$rules[rule.include || rule]);
+                var toInsert = this.$rules[rule.include || rule];
                 if (rule.noEscape) {
-                    args = args.filter(function(x) {
+                    toInsert = toInsert.filter(function(x) {
                         return !x.next;
                     });
                 }
-                stateRules.splice.apply(stateRules, args);
+                stateRules.splice(i, 1);
+                lang.spliceIntoArray(stateRules, i, toInsert);
             } else if (rule.token in tokenMap) {
                 rule.token = tokenMap[rule.token];
             }
diff --git a/lib/ace/mode/text_highlight_rules.js b/lib/ace/mode/text_highlight_rules.js
index 48e016b0..9e304a53 100644
--- a/lib/ace/mode/text_highlight_rules.js
+++ b/lib/ace/mode/text_highlight_rules.js
@@ -181,10 +181,10 @@ var TextHighlightRules = function() {
                     toInsert = rule;
 
                 if (toInsert) {
-                    var args = [i, 1].concat(toInsert);
                     if (rule.noEscape)
-                        args = args.filter(function(x) {return !x.next;});
-                    state.splice.apply(state, args);
+                        toInsert = toInsert.filter(function(x) {return !x.next;});
+                    state.splice(i, 1);
+                    lang.spliceIntoArray(state, i, toInsert);
                     // skip included rules since they are already processed
                     //i += args.length - 3;
                     i--;
diff --git a/lib/ace/snippets.js b/lib/ace/snippets.js
index ee1a5498..e5d585bb 100644
--- a/lib/ace/snippets.js
+++ b/lib/ace/snippets.js
@@ -335,12 +335,12 @@ var SnippetManager = function() {
             }
             
             var ts = tabstops[id];
-            var arg = typeof ts.value == "string" ? [ts.value] : copyValue(ts.value);
-            arg.unshift(i + 1, Math.max(0, i1 - i));
-            arg.push(p);
+            var toInsert = typeof ts.value == "string" ? [ts.value] : copyValue(ts.value);
+            toInsert.push(p);
             expanding[id] = p;
-            tokens.splice.apply(tokens, arg);
-
+            tokens.splice(i + 1, Math.max(0, i1 - i));
+            lang.spliceIntoArray(tokens, i + 1, toInsert);
+            
             if (ts.indexOf(p) === -1)
                 ts.push(p);
         };
@@ -755,7 +755,7 @@ var TabstopManager = function(editor) {
         }
 
         var i = this.index;
-        var arg = [i, 0];
+        var toInsert = [];
         var ranges = this.ranges;
         var editor = this.editor;
         tabstops.forEach(function(ts) {
@@ -776,12 +776,12 @@ var TabstopManager = function(editor) {
             }
             if (!ts.firstNonLinked)
                 ts.hasLinkedRanges = false;
-            arg.push(ts);
+            toInsert.push(ts);
             this.addTabstopMarkers(ts);
         }, this);
         // tabstop 0 is the last one
-        arg.push(arg.splice(2, 1)[0]);
-        this.tabstops.splice.apply(this.tabstops, arg);
+        toInsert.push(toInsert.splice(0, 1)[0]);
+        lang.spliceIntoArray(this.tabstops, this.index, toInsert);
     };
 
     this.addTabstopMarkers = function(ts) {