simon-svn: puzzles: simon

Commits to Tartarus CVS repository. tartarus-commits at
Sat Apr 2 16:36:30 BST 2011

SVN root:       svn://
Changes by:     simon
Revision:       9139
Date:           2011-04-02 16:36:30 +0100 (Sat, 02 Apr 2011)

Log message (2 lines):
Add functions provided by the midend to tell a front end whether GUI
buttons for undo and redo should currently be greyed out.

Modified files:
U   puzzles/devel.but
U   puzzles/midend.c
U   puzzles/puzzles.h


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