Re: [PATCH v2] prompt: fix show upstream with svn and zsh

> Currently the __git_ps1 git prompt gives the following error with a
> repository converted by git-svn, when used with zsh:
>
>    __git_ps1_show_upstream:19: bad pattern: svn_remote[
>    __git_ps1_show_upstream:45: bad substitution
>
> To reproduce the problem, the __git_ps1_show_upstream function can be
> executed in a repository converted with git-svn.  Both those errors are
> triggered by spaces after the '['.
>
> Zsh also doesn't support initializing an array with `local var=(...)`.
> This triggers the following error:
>
>    __git_ps1_show_upstream:41: bad pattern: svn_upstream=(commit
>
> Use
>    local -a
>    var=(...)
> instead to make is compatible.
>
> This was introduced by 6d158cba (bash completion: Support "divergence
> from upstream" messages in __git_ps1), when the script was for bash
> only.
>
> Signed-off-by: Thomas Gummerer <t.gummerer@gmail.com>