This one is pretty obvious. Right now, using [w] plus a direction causes the character to _initially_ go into that direction, but the character doesn't stop or announce direction changes when hitting a corner. (On a glad note, the old "you bump into a wall" is still present, THANK YOU for that!). A toggle in the config file would be nice, so that people who use the walk mode for quick exploring and don't mind the character cornering can still do so while others who want the char to stop at corners can have that too.