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From: Vasilij Schneidermann <mail@vasilij.de>
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Subject: Re: Obtaining a database of new functionality per Emacs version
Date: Mon, 7 Dec 2020 19:11:13 +0100
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> The version info displayed in `C-h o` comes from the NEWS files.
> It's indeed approximate but I've found it surprisingly usable so far.

Hm, I couldn't find any evidence of it using it for functions, for
example `seq-first` which according to NEWS has been added in 27.1.

> Whichever solution you end up, I hope it can be used for `C-h o`
> as well.

I could imagine such a database to be included with Emacs as part of a
stable release.

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