fix($compile): denormalize directive templates

Since developers are allowed to customize start/end interpolation
strings, but third-party directive creators don't know about these
customizations, we should standardize on {{ }} in templates of
reusable (third-party) directives. During the compilation, these
templates are then denormalized to use whatever the custom
start/end symbol is, effectively translating the template into the
syntax of the runtime environment.

This addresses an issue raised at http://goo.gl/e8VPV

Existing code should not be affected by this change since project
that do use custom interpolation markers are not expected to use
{{ }} in existing directive templates.

1 files changed, 12 insertions, 0 deletions

diff --git a/src/ng/compile.js b/src/ng/compile.js
index 56dafc39..89f46af6 100644
--- a/src/ng/compile.js
+++ b/src/ng/compile.js
@@ -297,6 +297,15 @@ function $CompileProvider($provide) {
       }
     };
 
+    var startSymbol = $interpolate.startSymbol(),
+        endSymbol = $interpolate.endSymbol(),
+        denormalizeTemplate = (startSymbol == '{{' || endSymbol  == '}}')
+            ? identity
+            : function denormalizeTemplate(template) {
+              return template.replace(/\{\{/g, startSymbol).replace(/}}/g, endSymbol);
+            };
+
+
     return compile;
 
     //================================
@@ -579,6 +588,7 @@ function $CompileProvider($provide) {
         if ((directiveValue = directive.template)) {
           assertNoDuplicate('template', templateDirective, directive, $compileNode);
           templateDirective = directive;
+          directiveValue = denormalizeTemplate(directiveValue);
 
           if (directive.replace) {
             $template = jqLite('<div>' +
@@ -898,6 +908,8 @@ function $CompileProvider($provide) {
         success(function(content) {
           var compileNode, tempTemplateAttrs, $template;
 
+          content = denormalizeTemplate(content);
+
           if (replace) {
             $template = jqLite('<div>' + trim(content) + '</div>').contents();
             compileNode = $template[0];