wip: fixing capture group problems

spec/app/text-mate-grammar-spec.coffee

@@ -68,6 +68,20 @@ describe "TextMateGrammar", ->
         expect(secondTokens[0]).toEqual value: "heredoc", scopes: ['source.coffee', 'string.quoted.heredoc.coffee']
         expect(secondTokens[1]).toEqual value: "'''", scopes: ['source.coffee', 'string.quoted.heredoc.coffee', 'punctuation.definition.string.end.coffee']
 
+    describe "when the line matches a pattern with optional capture groups", ->
+      it "only returns tokens for capture groups that matched", ->
+        {tokens} = grammar.getLineTokens("class Quicksort")
+        expect(tokens.length).toBe 3
+        expect(token[0].value).toBe "class"
+        expect(token[1].value).toBe " "
+        expect(token[2].value).toBe "Quicksort"
+
+    describe "something", ->
+      fit "works", ->
+        {tokens} = grammar.getLineTokens("  destroy: ->")
+        expect(tokens.length).toBe 5
+
+
    describe "when the line matches a begin/end pattern that contains sub-patterns", ->
      it "returns tokens within the begin/end scope based on the sub-patterns", ->
        {tokens} = grammar.getLineTokens('"""heredoc with character escape \\t"""')

src/app/text-mate-grammar.coffee

@@ -137,8 +137,10 @@ class Pattern
     previousCaptureEndPosition = 0
 
     for captureIndex in _.keys(@captures)
-      currentCaptureStartPosition = match.indices[captureIndex] - match.index
       currentCaptureText = match[captureIndex]
+      continue unless currentCaptureText.length
+
+      currentCaptureStartPosition = match.indices[captureIndex] - match.index
       currentCaptureScopeName = @captures[captureIndex].name
 
       if previousCaptureEndPosition < currentCaptureStartPosition

src/app/tokenized-buffer.coffee

@@ -145,4 +145,9 @@ class TokenizedBuffer
             stop()
     position
 
+  logLines: (start=0, end=@buffer.getLastRow()) ->
+    for row in [start..end]
+      line = @lineForScreenRow(row).text
+      console.log row, line, line.length
+
 _.extend(TokenizedBuffer.prototype, EventEmitter)