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Date: Mon, 12 Mar 2012 21:39:52 +1300
Message-ID: <CAATnKFAAXE-v33akcGyVDvmgPBUuDf6T7zUwdoniUto9d31Dpw@mail.gmail.com>
Subject: Re: [gentoo-dev] RFD: EAPI specification in ebuilds
From: Kent Fredric <kentfredric@gmail.com>
To: gentoo-dev@lists.gentoo.org
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On 12 March 2012 21:27, Micha=C5=82 G=C3=B3rny <mgorny@gentoo.org> wrote:
> And we could just use a good regex for that instead.
>
> Something like: [eE][aA][pP][iI] <whitespace-or-symbols> [a-z0-9-+]+
>
> and just require users for this to be the first thing declared in
> an ebuild. Of course, this could make problems with stuff like:
>
> # EAPI 4 because of foobarbaz
> EAPI=3D4
>
> (on the other hand, in this particular case it will fetch '4' anyway).
>
> And this will work as well with:
>
> <eapi>15-xml</eapi>
>
> and
>
> - eapi: 15-yaml
>
Also, remember the proposal is to read it only from the first 10-30
lines of the file, and if you're *generating* YAML/XML , then this is
not necessarily guaranteed.
Some generation tools emit keys in alphanumeric ordering, others
psuedo-randomly, and the EAPI declaration line in some formats could
easily be on the very last line of the file.
And then the regexp could falsely detect something in another key the
original author had not intended as an EAPI definition, but merely a
comment, ...
ie:
<generateddata>
<comment> This is a user comment, hurr, I hate EAPI 5 </comment>
<eapi value=3D"15" />
</generateddata>
--=20
Kent
perl -e=C2=A0 "print substr( \"edrgmaM=C2=A0 SPA NOcomil.ic\\@tfrken\", \$_=
* 3,
3 ) for ( 9,8,0,7,1,6,5,4,3,2 );"