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From:   Junio C Hamano <gitster@pobox.com>
To:     Konstantin Kharlamov <hi-angel@yandex.ru>
Cc:     git@vger.kernel.org
Subject: Re: Getting path to a file from arbitrary project directory
References: <21c8396c1441dd4f74cd2097ac970a2033b81da4.camel@yandex.ru>
Date:   Fri, 23 Jun 2023 02:52:29 -0700
In-Reply-To: <21c8396c1441dd4f74cd2097ac970a2033b81da4.camel@yandex.ru>
        (Konstantin Kharlamov's message of "Fri, 23 Jun 2023 11:52:58 +0300")
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Konstantin Kharlamov <hi-angel@yandex.ru> writes:

> 1: the usecase is I have a Emacs helper function to pick up a an
> aribtrarily mangled path to a file in the project from the primary
> clipboard and open that file. It's often "mangled", because gdb
> prints it with `../`, then logs print no path whatsoever, just a
> filename=E2=80=A6 So it's generally useful to have.

Sounds like you are looking for the top (and possibly glob) magic
pathspec, e.g. in the source tree of Git itself, I can go a few
levels down into a random directory and get exactly the same listing
of two files whose name is "rerere.c" located in two directories:

    $ cd t/helper
    $ git ls-files --full-name ':(top,glob)**/rerere.c'
    builtin/rerere.c
    rerere.c

Look for magic pathspec in "git help glossary" to learn more.