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

From: Brandon Casey draf...@gmail.com 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

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

From: Brandon Casey draf...@gmail.com 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