artist-unintersection-char

artist-unintersection-char is a compiled Lisp function in `artist.el'.

(artist-unintersection-char LINE-C BUFFER-C)

Restore character to before intersection when removing LINE-C from BUFFER-C.
Return character according to this scheme:

LINE-C BUFFER-C return
- + |
| + -
\ X /
/ X \
other combinations `artist-erase-char'.