Wrap at phantom tokens only when moving cursor left

This prevents a weird behavior that affects selection. Before this commit, when
moving the cursor down, if it was inside a real (soft|hard)-tab of a soft
wrapped line, it would reach the end of the line rather than the beginning of
the next wrapped line.

/cc: @nathansobo

src/cursor.coffee

@@ -310,7 +310,7 @@ class Cursor extends Model
         columnCount-- # subtract 1 for the row move
 
       column = column - columnCount
-      @setScreenPosition({row, column})
+      @setScreenPosition({row, column}, wrapAtPhantomTokens: true)
 
   # Public: Moves the cursor right one screen column.
   #

src/display-buffer.coffee

@@ -819,11 +819,12 @@ class DisplayBuffer extends Model
   # options - A hash with the following values:
   #           wrapBeyondNewlines: if `true`, continues wrapping past newlines
   #           wrapAtSoftNewlines: if `true`, continues wrapping past soft newlines
+  #           wrapAtPhantomTokens: if `true`, continues wrapping before phantom tokens
   #           screenLine: if `true`, indicates that you're using a line number, not a row number
   #
   # Returns the new, clipped {Point}. Note that this could be the same as `position` if no clipping was performed.
   clipScreenPosition: (screenPosition, options={}) ->
-    { wrapBeyondNewlines, wrapAtSoftNewlines } = options
+    { wrapBeyondNewlines, wrapAtSoftNewlines, wrapAtPhantomTokens } = options
     { row, column } = Point.fromObject(screenPosition)
 
     if row < 0
@@ -845,8 +846,11 @@ class DisplayBuffer extends Model
       else
         column = screenLine.clipScreenColumn(maxScreenColumn - 1)
     else if screenLine.isColumnInsidePhantomToken(column)
-      row--
-      column = @screenLines[row].getMaxScreenColumn()
+      if wrapAtPhantomTokens
+        row--
+        column = @screenLines[row].getMaxScreenColumn()
+      else
+        column = screenLine.clipScreenColumn(0)
     else if wrapBeyondNewlines and column > maxScreenColumn and row < @getLastRow()
       row++
       column = 0