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From: Grant Edwards <grant.b.edwards@gmail.com>
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Subject: Re: tab-width ignored in .dir-locals.el
Date: Fri, 12 Nov 2021 18:15:32 -0000 (UTC)
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On 2021-11-12, Grant Edwards <grant.b.edwards@gmail.com> wrote:

> How do you set the tab width for C-mode in a .dir-locals.el file?
>
> All the documentation I can find says this should work:
>
> ------------------------------------------------------------------------
> ((nil . ((indent-tabs-mode . t)
>          (tab-width . 4)
>               ))
>  (c-mode . ((c-file-style . "BSD")
>             (subdirs . t)
> 			))
>  )
> ------------------------------------------------------------------------
>
> But when I edit a .c file, the tab width is always 8.

Aargh. I just realized it's not tab size that's wrong, it's the
c-file-offsets...