Merge pull request #758 from garygreen/highlight-speed

Speed up syntax highlighting

src/Whoops/Resources/js/whoops.base.js

@@ -25,7 +25,7 @@ Zepto(function($) {
    * highlight the current line
    */
   var renderCurrentCodeblock = function(id) {
-    Prism.highlightAll();
+    Prism.highlightAllUnder(document.querySelector('.frame-code-container .frame-code.active'));
     highlightCurrentLine();
   }
 
@@ -153,9 +153,6 @@ Zepto(function($) {
     }
   });
 
-  // Render late enough for highlightCurrentLine to be ready
-  renderCurrentCodeblock();
-
   // Avoid to quit the page with some protocol (e.g. IntelliJ Platform REST API)
   $ajaxEditors.on('click', function(e){
     e.preventDefault();
@@ -185,4 +182,7 @@ Zepto(function($) {
     e.preventDefault();
     setActiveFramesTab($(this));
   });
+
+  // Render late enough for highlightCurrentLine to be ready
+  renderCurrentCodeblock();
 });