Hi,

On Thu, Oct 10, 2013 at 03:32:13PM +0200, Julien Carsique wrote:
> @@ -204,6 +206,9 @@ __git_ps1_show_upstream ()
>               *)          # diverged from upstream
>                       p=" u+${count#* }-${count%      *}" ;;
>               esac
> +             if [[ -n "$count" && -n "$name" ]]; then
> +                     p+=" $(git rev-parse --abbrev-ref "$upstream" 
> 2>/dev/null)"

The '+=' operator is not supported in all Bash versions we care about.
Please write this as p="$p $(...)".

Thanks,
Gábor

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