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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: What's the line length limit in the Emacs codebase?
Date: Wed, 23 Dec 2020 17:42:09 +0200
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To: Philipp Stephani <p.stephani2@gmail.com>
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 (message from Philipp Stephani on Wed, 23 Dec 2020 10:58:32 +0100)
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> From: Philipp Stephani <p.stephani2@gmail.com>
> Date: Wed, 23 Dec 2020 10:58:32 +0100
> 
> There seem to be conflicting settings for the line length limit in the
> Emacs codebase: .dir-locals.el sets fill-column to 70, but large areas
> of the source code (including comments) seem to use 80. Can we pick
> one value and use it consistently (for new/changed code)?

70 is it, we just don't necessarily enforce it religously.

Where did you see significant deviations from that standard?