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- To: (BUG ZWEI) at MIT-AI
- Subject: Zwei bug
- From: MOON5 at MIT-AI (David A. Moon)
- Date: Thu ,1 May 80 22:39:00 EDT
In the 183rd line of the function NZWEI:REDISPLAY, where it's deciding whether
to do an erase-to-eof, appears the test
(> (PLINE-TICK WINDOW PLINE) 0)
If the very first display ever done doesn't fill the screen (e.g. start
a fresh world and do (ed 'foo) where foo is a function defined at the end
of a file) this line gets an error because PLINE-TICK is NIL. But why
this magic zero?? In fact I don't see what this line accomplishes at all
in its containing AND.
Another random bug, while I'm at it. In Mail mode, c-; inserts a ;-comment
but c-m-; is a no-op. I think this bug was inherited from Emacs and has to
do with the difference between comment begin and comment start.