Re: bug zwei (P.S.)

[MOON5@MIT-AI]

MOON5@MIT-AI 01/29/79 14:30:42 Re: bug zwei (P.S.)
    In REDISPLAY, 
			 (COND ((AND (EQ LINE WINDOW-LINE)
				     (NOT TOTALLY-MUNGED-P)
				     (> (PLINE-TICK WINDOW PLINE) LINE-TICK)
    this ">" is never true, as far as I can see.  I'm not sure what this is supposed 
    to do, probably a comment would be worthwhile here.
    ---
    OK, I guess I see.  Evidently redisplay causes a redundant tick, so
    this ">" really means "=".
I must say, I don't know what you're talking about.  If you read the
thesis you should know what this code is for.  If it were never true,
ZWEI would always redisplay all lines.  If I changed it to "=", it would
never be true, and ZWEI really WOULD redisplay all lines.  If you look
at ZWEI you will see that it does in fact work.  I assume that no two
values of the clock will be equal, since every interesting event
causes the clock to tick.