Fold placeholder lines are treated as if they're empty

spec/app/renderer-spec.coffee

@@ -395,6 +395,10 @@ describe "Renderer", ->
         expect(renderer.clipScreenPosition([0, 30], wrapBeyondNewlines: true)).toEqual [1, 0]
         expect(renderer.clipScreenPosition([0, 1000], wrapBeyondNewlines: true)).toEqual [1, 0]
 
+      it "wraps positions in the middle of fold lines to the next screen line", ->
+        renderer.createFold(3, 5)
+        expect(renderer.clipScreenPosition([3, 5], wrapBeyondNewlines: true)).toEqual [4, 0]
+
     describe "when wrapAtSoftNewlines is false (the default)", ->
       it "clips positions at the end of soft-wrapped lines to the character preceding the end of the line", ->
         expect(renderer.clipScreenPosition([3, 50])).toEqual [3, 50]

src/app/line-map.coffee

@@ -121,8 +121,8 @@ class LineMap
     targetDelta = traversalResult[targetDeltaType]
 
     return targetDelta unless lastLineFragment
-    maxSourceColumn = sourceDelta.column + lastLineFragment.text.length
-    maxTargetColumn = targetDelta.column + lastLineFragment.text.length
+    maxSourceColumn = sourceDelta.column + lastLineFragment.textLength()
+    maxTargetColumn = targetDelta.column + lastLineFragment.textLength()
 
     if lastLineFragment.isSoftWrapped() and sourcePosition.column >= maxSourceColumn
       if wrapAtSoftNewlines

src/app/screen-line-fragment.coffee

@@ -49,11 +49,7 @@ class ScreenLineFragment
 
   translateColumn: (sourceDeltaType, targetDeltaType, sourceColumn, options={}) ->
     { skipAtomicTokens } = options
-    if @fold
-      textLength = 0
-    else
-      textLength = @text.length
-    sourceColumn = Math.min(sourceColumn, textLength)
+    sourceColumn = Math.min(sourceColumn, @textLength())
 
     currentSourceColumn = 0
     currentTargetColumn = 0
@@ -75,6 +71,12 @@ class ScreenLineFragment
       remainingColumns = sourceColumn - currentSourceColumn
       currentTargetColumn + remainingColumns
 
+  textLength: ->
+    if @fold
+      textLength = 0
+    else
+      textLength = @text.length
+
   isSoftWrapped: ->
     @screenDelta.row == 1 and @bufferDelta.row == 0