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Re: `gzip` dependency

From: Stefan Monnier
Subject: Re: `gzip` dependency
Date: Mon, 11 Jan 2021 09:59:19 -0500
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux)

>> > The gzip thing is again your call (having gzip in the package is no
>> > big deal, IMO).
>> BTW, we don't really need a `gzip` executable as long as we have the
>> `zlib-decompress-region` function, right?
> Not necessarily, because Info files can be read outside Emacs.

I don't think we should worry about that: those who want to read Info
files with something else than Emacs may need to have `gzip` installed,
and I think it's perfectly acceptable.

My question was instead about whether or not Emacs does indeed make use
of `zlib-decompress-region` when it tries to read a gzipped Info file,
and whether the Windows build does always provide
`zlib-decompress-region` or whether that function also requires an
external dependency that may or may not be available (in which case
it's no better than using the `gzip` executable in this respect).


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