shithub: puzzles

Download patch

ref: 340c300c1dd38f3a5efe4d03bea27973aa71c563
parent: ed63f9c50efeb26f3decade7dc50c7b0efa008ae
author: Simon Tatham <anakin@pobox.com>
date: Thu Feb 2 02:18:14 EST 2012

David Nickerson reports that it's possible to lay a line over a 'no
line here' cross mark by dragging, and furthermore, that doing so puts
that grid edge into a stuck state that no UI action short of undo can
get it back out of. Fix drags to stop at crosses, and fix execute_move
to fault any move string that nonetheless somehow managed to try to
set a line over a cross without explicitly tagging it 'R'.

[originally from svn r9400]