DevTools: [CodeMirror] roll CodeMirror to version @e20d175

Source/devtools/front_end/cm/overlay.js

Index: Source/devtools/front_end/cm/overlay.js
diff --git a/Source/devtools/front_end/cm/overlay.js b/Source/devtools/front_end/cm/overlay.js
index b7928a7bbf38bc5caf89dd4e7d7121425b9ae650..393054dfa441778fe8501d96bbe7cb8cf0167327 100644
--- a/Source/devtools/front_end/cm/overlay.js
+++ b/Source/devtools/front_end/cm/overlay.js
@@ -1,20 +1,34 @@
+// CodeMirror, copyright (c) by Marijn Haverbeke and others
+// Distributed under an MIT license: http://codemirror.net/LICENSE
+
 // Utility function that allows modes to be combined. The mode given
 // as the base argument takes care of most of the normal mode
 // functionality, but a second (typically simple) mode is used, which
 // can override the style of text. Both modes get to parse all of the
 // text, but when both assign a non-null style to a piece of code, the
-// overlay wins, unless the combine argument was true, in which case
-// the styles are combined.
+// overlay wins, unless the combine argument was true and not overridden,
+// or state.overlay.combineTokens was true, in which case the styles are
+// combined.
+
+(function(mod) {
+  if (typeof exports == "object" && typeof module == "object") // CommonJS
+    mod(require("../../lib/codemirror"));
+  else if (typeof define == "function" && define.amd) // AMD
+    define(["../../lib/codemirror"], mod);
+  else // Plain browser env
+    mod(CodeMirror);
+})(function(CodeMirror) {
+"use strict";
 
-// overlayParser is the old, deprecated name
-CodeMirror.overlayMode = CodeMirror.overlayParser = function(base, overlay, combine) {
+CodeMirror.overlayMode = function(base, overlay, combine) {
   return {
     startState: function() {
       return {
         base: CodeMirror.startState(base),
         overlay: CodeMirror.startState(overlay),
         basePos: 0, baseCur: null,
-        overlayPos: 0, overlayCur: null
+        overlayPos: 0, overlayCur: null,
+        lineSeen: null
       };
     },
     copyState: function(state) {
@@ -27,6 +41,12 @@ CodeMirror.overlayMode = CodeMirror.overlayParser = function(base, overlay, comb
     },
 
     token: function(stream, state) {
+      if (stream.sol() || stream.string != state.lineSeen ||
+          Math.min(state.basePos, state.overlayPos) < stream.start) {
+        state.lineSeen = stream.string;
+        state.basePos = state.overlayPos = stream.start;
+      }
+
       if (stream.start == state.basePos) {
         state.baseCur = base.token(stream, state.base);
         state.basePos = stream.pos;
@@ -37,10 +57,14 @@ CodeMirror.overlayMode = CodeMirror.overlayParser = function(base, overlay, comb
         state.overlayPos = stream.pos;
       }
       stream.pos = Math.min(state.basePos, state.overlayPos);
-      if (stream.eol()) state.basePos = state.overlayPos = 0;
 
+      // state.overlay.combineTokens always takes precedence over combine,
+      // unless set to null
       if (state.overlayCur == null) return state.baseCur;
-      if (state.baseCur != null && combine) return state.baseCur + " " + state.overlayCur;
+      else if (state.baseCur != null &&
+               state.overlay.combineTokens ||
+               combine && state.overlay.combineTokens == null)
+        return state.baseCur + " " + state.overlayCur;
       else return state.overlayCur;
     },
 
@@ -57,3 +81,5 @@ CodeMirror.overlayMode = CodeMirror.overlayParser = function(base, overlay, comb
     }
   };
 };
+
+});