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Re: Random thanks to emacs: emacs doesn't care if the filesystem exists


From: Stefan Monnier
Subject: Re: Random thanks to emacs: emacs doesn't care if the filesystem exists
Date: Tue, 05 Apr 2022 08:36:08 -0400
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/29.0.50 (gnu/linux)

> I regularly mount and unmount the filesystem which holds my .emacs.d and
> lots of files emacs has open, and umount doesn't care, and emacs doesn't
> care, wheras most other programs need to be killed or else umount does't
> work.  Thanks.

Indeed Emacs doesn't really support "file handles": there's no way to
separate `open` from `read` in ELisp, instead we only have
`insert-file-contents` which does the open+read+close (same holds for
`write` with `write-region`).

That's a blessing and a curse,


        Stefan




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