The Trunk: ToolBuilder-Morphic-cmm.114.mcz

Chris Muller uploaded a new version of ToolBuilder-Morphic to project The Trunk:
http://source.squeak.org/trunk/ToolBuilder-Morphic-cmm.114.mcz

==================== Summary ====================

Name: ToolBuilder-Morphic-cmm.114
Author: cmm
Time: 1 April 2015, 3:05:39.686 pm
UUID: 734dc0ce-3ffa-429c-a740-12d57659e296
Ancestors: ToolBuilder-Morphic-cmm.113

No, you cannot send copyFrom: 0 to: 0 to an empty Array.  Must check for emptiness.

=============== Diff against ToolBuilder-Morphic-cmm.113 ===============

Item was changed:
  ----- Method: PluggableTreeMorph>>visibleItems (in category 'geometry') -----
  visibleItems
+ ^ self items ifNotEmpty:
+ [ : items | items
+ copyFrom: self topVisibleRowIndex
+ to: self bottomVisibleRowIndex ]!
- ^ self items
- copyFrom: self topVisibleRowIndex
- to: self bottomVisibleRowIndex!