simon-svn: puzzles: simon

[Commits to Tartarus CVS repository.]

SVN root:       svn://svn.tartarus.org/sgt
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

Links:
http://svn.tartarus.org/sgt/?rev=9139&view=rev
http://svn.tartarus.org/sgt/puzzles/devel.but?rev=9139&r1=9138&r2=9139
http://svn.tartarus.org/sgt/puzzles/midend.c?rev=9139&r1=9138&r2=9139
http://svn.tartarus.org/sgt/puzzles/puzzles.h?rev=9139&r1=9138&r2=9139