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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: [Emacs-diffs] master 61fb521: Avoid false indications from
 Flymake in .dir-locals.el files
Date: Mon, 21 Oct 2019 16:11:10 +0300
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To: Stefan Monnier <monnier@iro.umontreal.ca>
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In-reply-to: <jwvimoip980.fsf-monnier+emacs@gnu.org> (message from Stefan
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> From: Stefan Monnier <monnier@iro.umontreal.ca>
> Cc: Eli Zaretskii <eliz@gnu.org>
> Date: Mon, 21 Oct 2019 08:42:09 -0400
> 
> How/when can `fname` match "\\`\\.#" ?
> 
> AFAICT lock "files" are symlinks that point nowhere so if the user tries
> to visit one of them he gets an empty buffer and a message "Symbolic
> link that points to non-existent file".

Not on MS-Windows, AFAICT.

I got the idea from bytecomp.el, btw.  I just checked it and saw that
lock files are indeed visited in elisp-mode.

> IOW maybe we should have a general
> 
>     ("/\\.#[^/]*\\'" . fundamental-mode)
> 
> entry in auto-mode-alist?

Maybe.  But then why does bytecomp.el does this by file name?