does it happen when you open this specific file, or any other file from src/johnny? if it's only wc.c that kills it, does it kill it when you open the file directly (acme wc.c)? if it's wc.c, then is there something special that you have in that file, special french characters, perhaps? can we see wc.c?
does it happen when you start acme with a single column (acme -c1)? i just tried with /sys/src/cmd/wc.c copied in $home/src/johnny and it doesn't crash for me under X11 and OSX, but that doesn't mean much :)
