Re: [PATCH 2/2] t/check-non-portable-shell: detect "FOO= shell_func", too

> Just like assigning a nonempty value, assigning an empty value to a
> shell variable when calling a function produces non-portable behavior:
> in some shells, the assignment lasts for the duration of the function
> invocation, and in others, it persists after the function returns.
>
> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
> ---
> diff --git a/t/check-non-portable-shell.pl b/t/check-non-portable-shell.pl
> @@ -46,7 +46,7 @@ sub err {
> -       /^\s*([A-Z0-9_]+=(\w+|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and
> +       /^\s*([A-Z0-9_]+=(\w*|(["']).*?\3)\s+)+(\w+)/ and exists($func{$4}) and
>                 err '"FOO=bar shell_func" assignment extends beyond "shell_func"';