linux-kernel - Re: [PATCH] checkkconfigsymbols.py: make it Git aware

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Message-ID: <CAD3Xx4LR8pUQnFp-h5BRG08Ujkj5hKzF2G9TJRD5-C+jaNsPTQ@mail.gmail.com>
Date:	Wed, 11 Mar 2015 15:19:56 +0100
From:	Valentin Rothberg <valentinrothberg@...il.com>
To:	Paul Bolle <pebolle@...cali.nl>
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	hengelein Stefan <stefan.hengelein@....de>,
	linux-kernel@...r.kernel.org,
	Andreas Ruprecht <rupran@...server.de>
Subject: Re: [PATCH] checkkconfigsymbols.py: make it Git aware

On Wed, Mar 11, 2015 at 1:04 PM, Paul Bolle <pebolle@...cali.nl> wrote:
> On Wed, 2015-03-11 at 12:16 +0100, Valentin Rothberg wrote:
>> Note that both options require to 'git reset --hard' the user's Git
>> tree, which can lead to the loss of uncommitted data.
>
> My local "800 line perl monster" basically does
>     git ls-tree -r $commit_or_tag
>
> which allows you to generate a list of files and their corresponding
> hashes (it also helps with filtering out symlinks by the way).
>
> The you can do
>     git cat-file blob $commit:$path
>
> or just
>     git cat-file blob $hash
>
> for every file you're interested in and parse the output of that file
> (in memory, as it were). None of that messes with the current state of
> the tree you're working on.

That's a good point.  I used cat-file once in another script but
totally forgot its existence, thanks : )  The patch is already queued,
so I will change the behavior to your suggestion soon.

Kind regards,
 Valentin
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