Fix copy/paste in IE

codemirror · May 4, 2013 · 53bc4b1 · 53bc4b1
1 parent 9d92920
commit 53bc4b1
Showing 1 changed file with 7 additions and 1 deletion.
diff --git a/addon/runmode/runmode.js b/addon/runmode/runmode.js
@@ -1,13 +1,19 @@
 CodeMirror.runMode = function(string, modespec, callback, options) {
   var mode = CodeMirror.getMode(CodeMirror.defaults, modespec);
+  var isIe8OrEarlier = /\bMSIE\s(\d+)/.exec(navigator.userAgent);
+  isIe8OrEarlier = isIe8OrEarlier && +isIe8OrEarlier[1] <= 8;
 
   if (callback.nodeType == 1) {
     var tabSize = (options && options.tabSize) || CodeMirror.defaults.tabSize;
     var node = callback, col = 0;
     node.innerHTML = "";
     callback = function(text, style) {
       if (text == "\n") {
-        node.appendChild(document.createElement("br"));
+        // Emitting LF or CRLF on IE8 or earlier results in an incorrect display.
+        // Emitting a carriage return makes everything ok.
+        var newLine = isIe8OrEarlier ? '\r' : text;
+        var newLineSpan = node.appendChild(document.createElement("span"));
+        newLineSpan.appendChild( document.createTextNode(newLine));
         col = 0;
         return;
       }