Fix filename parsing on filenames with tabs

* Why would someone create files with tabs?

bower.json

@@ -1,6 +1,6 @@
 {
   "name": "diff2html",
-  "version": "2.0.0-beta2",
+  "version": "2.0.0-beta3",
   "homepage": "http://rtfpessoa.github.io/diff2html/",
   "description": "Fast Diff to colorized HTML",
   "keywords": [

package.json

@@ -1,6 +1,6 @@
 {
   "name": "diff2html",
-  "version": "2.0.0-beta2",
+  "version": "2.0.0-beta3",
   "homepage": "http://rtfpessoa.github.io/diff2html/",
   "description": "Fast Diff to colorized HTML",
   "keywords": [

src/diff-parser.js

@@ -161,10 +161,10 @@
       if (utils.startsWith(line, 'diff')) {
         startFile();
       } else if (currentFile && !currentFile.oldName && (values = getSrcFilename(line, config))) {
-        currentFile.oldName = values[1];
+        currentFile.oldName = values;
         currentFile.language = getExtension(currentFile.oldName, currentFile.language);
       } else if (currentFile && !currentFile.newName && (values = getDstFilename(line, config))) {
-        currentFile.newName = values[1];
+        currentFile.newName = values;
         currentFile.language = getExtension(currentFile.newName, currentFile.language);
       } else if (currentFile && utils.startsWith(line, '@@')) {
         startBlock(line);
@@ -227,7 +227,7 @@
   }
 
   function getSrcFilename(line, cfg) {
-    var prefixes = ["a\\/", "i\\/", "w\\/", "c\\/", "o\\/"];
+    var prefixes = ["a/", "i/", "w/", "c/", "o/"];
 
     if (cfg.srcPrefix) prefixes.push(cfg.srcPrefix);
 
@@ -235,7 +235,7 @@
   }
 
   function getDstFilename(line, cfg) {
-    var prefixes = ["b\\/", "i\\/", "w\\/", "c\\/", "o\\/"];
+    var prefixes = ["b/", "i/", "w/", "c/", "o/"];
 
     if (cfg.dstPrefix) prefixes.push(cfg.dstPrefix);
 
@@ -243,8 +243,20 @@
   }
 
   function _getFilename(linePrefix, line, prefixes) {
-    var prefixesStr = prefixes.join("|");
+    var FilenameRegExp = new RegExp('^' + linePrefix + ' "?(.+?)"?$');
-    return new RegExp('^' + linePrefix + ' "?(?:' + prefixesStr + ')(.+?)"?$').exec(line);
+
+    var filename;
+    var values = FilenameRegExp.exec(line);
+    if (values && values[1]) {
+      filename = values[1];
+      var prefix = prefixes.find(function(prefix) {
+        return filename.startsWith(prefix);
+      });
+
+      if (prefix) filename = filename.slice(prefix.length); // remove prefix if exists
+    }
+
+    return filename;
   }
 
   module.exports.DiffParser = new DiffParser();