GNU bug report logs - #72176
30.0.60; icomplete-vertical-mode failed to work with Error

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From: Eli Zaretskii <eliz <at> gnu.org>
To: Robert Pluim <rpluim <at> gmail.com>, João Távora <joaotavora <at> gmail.com>
Cc: 72176 <at> debbugs.gnu.org, aqua0210 <at> foxmail.com, visuweshm <at> gmail.com
Subject: bug#72176: 30.0.60; icomplete-vertical-mode failed to work with Error
Date: Sat, 20 Jul 2024 09:05:16 +0300

> From: Robert Pluim <rpluim <at> gmail.com>
> Cc: 72176 <at> debbugs.gnu.org,  aqua0210 <at> foxmail.com,  visuweshm <at> gmail.com
> Date: Fri, 19 Jul 2024 09:15:49 +0200
> 
> >>>>> On Thu, 18 Jul 2024 18:34:35 +0300, Eli Zaretskii <eliz <at> gnu.org> said:
> 
>     Eli> (I tested on GNU/Linux as well, and couldn't reproduce.)  Why does it
>     Eli> happen to you and not to others?  What conditions should happen and
>     Eli> how to modify the recipe to reproduce this?
> 
> If I start emacs from "~", it doesnʼt happen, if I start it from eg
> "~/repos/emacs-30" via "src/emacs -Q" then it does happen.

Thanks.  I've applied the trivial band-aid on emacs-30 to avoid the
error in post-command-hook, but the real problem is not in the
function that signals the error, it's in icomplete.el where it calls
the lazy-highlight code.  The evidence is that after the fix, the
display shown in those cases that caused the error is not the expected
one, unless you set icomplete-tidy-shadowed-file-names non-nil.  It
sounds like the problem happens specifically when the minibuffer text
begins with a "~/" and there's another "~/" later in the minibuffer,
the one the user types: the code probably doesn't expect that.

Adding João, who I think wrote this code.

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