If anybody ever has the energy to look at the redisplay routine

[Leigh L. Klotz <KLOTZ @ MIT-MC>]

I suspect this bug has to do with the TYO HASH, but it may be unfixable
and just part of the algorithm - it's been with us for ages, but it
seems to me that I don't remember it happening three years ago or so.

Type ^R on this message and modify a line.  They type M-X ^G.
The line will be needlessly redisplayed.  It works for more than one
line, too.  ^U-^L will give the same effect, so it's presumably
it's just the redisplay routine.  When I look at the FS TYO HASH
of the affected lines, they are -1.  So does this mean that the
tyo hash isn't validated until there's a honest full redisplay, or
something like it?

Leigh.