From: Brandon Casey <drafnel@gmail.com>
Date: Thu, 22 Aug 2013 01:39:03 +0000 (-0700)
Subject: contrib/git-prompt.sh: handle missing 'printf -v' more gracefully
X-Git-Tag: v1.8.4.1~7^2
X-Git-Url: https://git.lorimer.id.au/gitweb.git/diff_plain/a44aa6930c9f3ce914f135c00a62878f9027f583?hp=a44aa6930c9f3ce914f135c00a62878f9027f583

contrib/git-prompt.sh: handle missing 'printf -v' more gracefully

Old Bash (3.0) which is distributed with RHEL 4.X and other ancient
platforms that are still in wide use, do not have a printf that
supports -v.  Neither does Zsh (which is already handled in the code).

As suggested by Junio, let's test whether printf supports the -v
option and store the result.  Then later, we can use it to
determine whether 'printf -v' can be used, or whether printf
must be called in a subshell.

Signed-off-by: Brandon Casey <drafnel@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
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