bug#37858: bug#37880: 27.0.50; Changing font size in Info-mode messes up formatting

[Eli Zaretskii <eliz@gnu.org>]

> Cc: 37880@debbugs.gnu.org, 37858@debbugs.gnu.org
> Date: Sat, 07 May 2022 10:29:54 -0400
> From:  Stefan Monnier via "Bug reports for GNU Emacs,
>  the Swiss army knife of text editors" <bug-gnu-emacs@gnu.org>
> 
> The patch I came up with back then doesn't work right.  IIRC it's
> because we need to change both the redisplay code and the
> `current-column` code and it only changed one of the two.
> 
> IIRC, I decided then that the right fix is to rewrite the
> `current-column` code to use the redisplay code (instead of trying to
> mimic it), but I didn't get around to that (and IIRC it's not
> completely straightforward because `current-column` currently behaves
> differently *on purpose* in some cases (most importantly w.r.t treating
> ellipsis-erased text) so fixing it right will imply changes in behavior
> and figuring out how to do it without breaking existing uses).

When did you last look at what current-column does in the context of
the issue being discussed here?

I'm not sure it does what you had in mind, but some changes were done
there recently, and the behavior in similar contexts did change.