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Don't create an undo-chain entry for a move with no effect.

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[originally from svn r7333]
This commit is contained in:
Simon Tatham
2007-02-25 13:00:58 +00:00
parent b9fd636928
commit a7408203eb
1 changed files with 6 additions and 2 deletions
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8
filling.c
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@ -962,9 +962,13 @@ static char *interpret_move(game_state *state, game_ui *ui, game_drawstate *ds,
{
const int i = w*ui->y + ui->x;
char buf[64];
sprintf(buf, "%d_%d", i, button);
ui->x = ui->y = -1;
return dupstr(buf);
if (state->board[i] == button) {
return ""; /* no change - just update ui */
} else {
sprintf(buf, "%d_%d", i, button);
return dupstr(buf);
}
}
}