From: Jeff King <peff@peff.net>
Date: Wed, 19 Dec 2007 14:37:04 GMT
Subject: Re: [PATCH] Use pathexpand to preparse the relative pathnames in blob references
Message-ID: <20071219143704.GA13942@coredump.intra.peff.net>
In-Reply-To: <20071218205253.GF2875@steel.home>

On Tue, Dec 18, 2007 at 09:52:53PM +0100, Alex Riesen wrote:

> This, OTOH, is a bit intrusive and changes the current behaviour a bit
> too far. git-show cannot use the absolute pathnames in blob locators
> at all now, which I consider bad. An obvious way to use rev:/path is
> blocked by Johannes' get_sha1_oneline. It would have worked, though.

IMO, this is backwards. The default should be absolute naming (after
all, you have already rooted it at a tree by saying HEAD:), and you
should treat '.' as a short-hand for "my current prefix". IOW, this
works as before:

  cd t && git show HEAD:t/test-lib.sh

but this would now work:

  cd t && git show HEAD:./test-lib.sh

and of course supporting '..' could be added, as well.

This works under the assumption that you don't have tree entries of '.'
or '..'; I don't think the data structure enforces any such assumption,
but I doubt you could easily create such a tree without hacking the git
tools (and you would have to be insane to do so anyway).

-Peff

PS I didn't just think of this...I'm pretty sure this discussion came up
sometime in the past year and somebody more clever than I thought of it.