GNU bug report logs - #54001
29.0.50; abbreviate-file-name has side-effects

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From: Stefan Monnier <monnier <at> iro.umontreal.ca>
To: Jim Porter <jporterbugs <at> gmail.com>
Cc: Daniel Mendler <mail <at> daniel-mendler.de>, 54001 <at> debbugs.gnu.org
Subject: bug#54001: 29.0.50; abbreviate-file-name has side-effects
Date: Mon, 14 Feb 2022 14:48:41 -0500

>> I suggest we take a step back and think of how to get that feature
>> without having to contact any remote host during `abbreviate-file-name`.
>> Maybe we can do that by making Tramp opportunistically add entries to
>> `directory-abbrev-alist` when it performs expansion?
>
> I think Michael Albinus suggested doing that in the original bug, although
> I was concerned about modifying defcustoms invisibly like that. Is that ok
> to do?

No it's not, but we can add a non-defcustom'd variable holding
additional entries to circumvent this problem.

> Another option might be to store the abbreviations for a given
> file-name-handler somewhere internally and consult that when calling that
> file-name-handler's implementation of `abbreviate-file-name'.

That would work as well.


        Stefan

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