Re: Redisplay: NS port, high CPU load

[Eli Zaretskii]

> From: Anders Lindgren <address@hidden>
> Date: Mon, 13 Jun 2016 20:44:15 +0200
> Cc: Eli Zaretskii <address@hidden>, Alan Third <address@hidden>, emacs-devel 
> <address@hidden>
> 
> Unfortunately, I can't reproduce this either, but I have a theory on what is 
> going on.

David said that it didn't happen in "emacs -Q", but did happen in his
normal setup, and AFAIU intended to come up with a recipe.

> When it comes to the HFS coding rewrite, I still think it is valid. The 
> documentation of `define-coding-system'
> indicated that it expects the pre-write function to convert the current 
> buffer and that the two parameters are
> only there for backward compatibility. The function, before the rewrite, was 
> clearly written for an older version
> of `define-coding-system'.

That's not the issue.  The issue is what change(s) to install on the
release branch.  We've lived with the current form of the utf-8-hfs's
pre-write conversion for a long time, so if it is not the root cause
behind the CPU load, I'd like to leave it alone on the release branch,
and fix the real problem instead.