tree 2e16f3eb90775f980e1e34bc53df0ecb38d12e45
parent 2ea3df68e881405940596b8c299921f681f8c22c
author Lee Carver <Lee.Carver@servicenow.com> 1378853735 +0000
committer Junio C Hamano <gitster@pobox.com> 1379008851 -0700

Allow git-filter-branch to process large repositories with lots of branches.

A recommended way to move trees between repositories is to use
git-filter-branch to revise the history for a single tree:

However, this can lead to "argument list too long" errors when the
original repository has many retained branches (>6k)

    /usr/local/git/libexec/git-core/git-filter-branch: line 270:
    /usr/local/git/libexec/git-core/git: Argument list too long
    Could not get the commits

Saving the output from rev-parse and feeding it into rev-list from
its standard input avoids this problem, since the rev-parse output
is not processed as a command line argument.

Signed-off-by: Lee Carver <Lee.Carver@servicenow.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>