bug#9246: Scrolling bug with word-wrap in emacs -nw

[Eli Zaretskii]

> From: Antoine Levitt <antoine.levitt@gmail.com>
> Date: Sat, 06 Aug 2011 02:12:22 +0200
> 
> How to reproduce:
> 
> emacs -nw -Q
> (setq word-wrap t)
> M-x erc, join a random channel
> M-x erc-scrolltobottom-enable
> type in a long link (http://longlinkthatgoesoveroneline.com)
> type in random lines till window is full
> watch all hell break loose (point at top of window, last line not visible)
> 
> FWIW, this is an old bug, and probably has nothing to do with bidi.

Does it happen with Emacs 23?  (I don't use ERC, so I cannot easily
test.)  If it does, then it indeed has nothing to do with bidi-related
display changes.