Changes in Tcl/Tk 8.6.6

Released July 27, 2016.

Tcl Changes

Updated to use Unicode 9.0.

Changes to Tcl Commands

Expanded Syntax / New Options

Modified Behavior


Tk Changes

Changes to Tk Commands

Expanded Syntax / New Options

  • TIP 443: More configuration options for text tags
  • TIP 446: More information out of text undo mechanism

Look and Feel

  • Appearance fixes for OSX/Aqua

Changes to Bundled Packages

Updated packages