Avoid escaping existing non-ascii characters in templates. [closes #278]

Former-commit-id: a56581f3e323c0c47e4f26ef8dce13e90fb6c15c

build/minify.js

@@ -375,6 +375,7 @@
         isAdvanced = mode == 'advanced',
         isMapped = this.isMapped,
         isSilent = this.isSilent,
+        isTemplate = this.isTemplate,
         options = closureOptions.slice(),
         outputPath = this.outputPath,
         mapPath = getMapPath(outputPath),
@@ -400,6 +401,9 @@
     if (isMapped) {
       options.push('--create_source_map=' + mapPath, '--source_map_format=V3');
     }
+    if (isTemplate) {
+      options.push('--charset=UTF-8');
+    }
 
     getJavaOptions(function(javaOptions) {
       var compiler = cp.spawn('java', javaOptions.concat('-jar', closurePath, options));
@@ -497,7 +501,7 @@
       // 4. output
       // restrict lines to 500 characters for consistency with the Closure Compiler
       var stream = uglifyJS.OutputStream({
-        'ascii_only': true,
+        'ascii_only': !this.isTemplate,
         'comments': /@cc_on|@license|@preserve/i,
         'max_line_len': 500,
       });

test/template/d.tpl

@@ -1 +1 @@
-Hello {{ name }}!
+Hallå {{ name }}!

test/test-build.js

@@ -652,7 +652,7 @@
           vm.runInContext(data.source, context);
 
           equal(moduleId, expectedId, basename);
-          equal(_.templates.d(object.d), 'Hello Mustache!', basename);
+          equal(_.templates.d(object.d), 'Hallå Mustache!', basename);
           delete _.templates;
           start();
         });