Report proper screen ranges on change events for folds created on wrapped lines

spec/atom/renderer-spec.coffee

@@ -42,6 +42,26 @@ describe "Renderer", ->
           expect(renderer.lineForRow(3).text).toBe '    var pivot = items.shift(), current, left = [], '
           expect(renderer.lineForRow(4).text).toBe 'right = [];'
 
+      describe "when a fold is created on the second screen line of a wrapped buffer line", ->
+        it "inserts the placeholder in the correct location and fires a change event", ->
+          fold = renderer.createFold([[3, 52], [3, 56]])
+          expect(renderer.lineForRow(3).text).toBe '    var pivot = items.shift(), current, left = [], '
+          expect(renderer.lineForRow(4).text).toBe 'r... = [];'
+          expect(renderer.lineForRow(5).text).toBe '    while(items.length > 0) {'
+
+          expect(changeHandler).toHaveBeenCalled()
+          [[event]]= changeHandler.argsForCall
+          expect(event.oldRange).toEqual([[3, 0], [4, 11]])
+          expect(event.newRange).toEqual([[3, 0], [4, 10]])
+
+          changeHandler.reset()
+          fold.destroy()
+
+          expect(changeHandler).toHaveBeenCalled()
+          [[event]]= changeHandler.argsForCall
+          expect(event.oldRange).toEqual([[3, 0], [4, 10]])
+          expect(event.newRange).toEqual([[3, 0], [4, 11]])
+
       describe "when there is a fold placeholder straddling the max length boundary", ->
         it "wraps the line before the fold placeholder", ->
           renderer.createFold([[3, 49], [6, 1]])

src/atom/renderer.coffee

@@ -63,8 +63,7 @@ class Renderer
       oldScreenRange.start.row,
       oldScreenRange.end.row,
       lines)
-    newScreenRange = @expandScreenRangeToLineEnds(
-      new Range(oldScreenRange.start.copy(), oldScreenRange.start.copy()))
+    newScreenRange = @screenLineRangeForBufferRange(bufferRange)
 
     @trigger 'change', oldRange: oldScreenRange, newRange: newScreenRange
     @trigger 'fold', bufferRange
@@ -75,7 +74,7 @@ class Renderer
     @unregisterFold(bufferRange.start.row, fold)
     startScreenRow = @screenRowForBufferRow(bufferRange.start.row)
 
-    oldScreenRange = @expandScreenRangeToLineEnds(new Range([startScreenRow, 0], [startScreenRow, 0]))
+    oldScreenRange = @screenLineRangeForBufferRange(bufferRange)
     @lineMap.replaceScreenRow(startScreenRow,
       @buildLinesForBufferRows(bufferRange.start.row, bufferRange.end.row))
     newScreenRange = @screenLineRangeForBufferRange(bufferRange)