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<!doctype html>

<title>CodeMirror: Diff mode</title>
<meta charset="utf-8"/>
<link rel=stylesheet href="../../doc/docs.css">

<link rel="stylesheet" href="../../lib/codemirror.css">
<script src="../../lib/codemirror.js"></script>
<script src="diff.js"></script>
<style>
      .CodeMirror {border-top: 1px solid #ddd; border-bottom: 1px solid #ddd;}
      span.cm-meta {color: #a0b !important;}
      span.cm-error { background-color: black; opacity: 0.4;}
      span.cm-error.cm-string { background-color: red; }
      span.cm-error.cm-tag { background-color: #2b2; }
    </style>
<div id=nav>
  <a href="https://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../../doc/logo.png"></a>

  <ul>
    <li><a href="../../index.html">Home</a>
    <li><a href="../../doc/manual.html">Manual</a>
    <li><a href="https://github.com/codemirror/codemirror">Code</a>
  </ul>
  <ul>
    <li><a href="../index.html">Language modes</a>
    <li><a class=active href="#">Diff</a>
  </ul>
</div>

<article>
<h2>Diff mode</h2>
<form><textarea id="code" name="code">
diff --git a/index.html b/index.html
index c1d9156..7764744 100644
--- a/index.html
+++ b/index.html
@@ -95,7 +95,8 @@ StringStream.prototype = {
     <script>
       var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
         lineNumbers: true,
-        autoMatchBrackets: true
+        autoMatchBrackets: true,
+      onGutterClick: function(x){console.log(x);}
       });
     </script>
   </body>
diff --git a/lib/codemirror.js b/lib/codemirror.js
index 04646a9..9a39cc7 100644
--- a/lib/codemirror.js
+++ b/lib/codemirror.js
@@ -399,10 +399,16 @@ var CodeMirror = (function() {
     }
 
     function onMouseDown(e) {
-      var start = posFromMouse(e), last = start;    
+      var start = posFromMouse(e), last = start, target = e.target();
       if (!start) return;
       setCursor(start.line, start.ch, false);
       if (e.button() != 1) return;