[PATCH v2 1/2] common: cli_hush: Restore clear local variable support

[Simon Glass]

On Tue, 4 Apr 2023 at 01:50, Stefan Herbrechtsmeier
<stefan.herbrechtsmeier-oss at weidmueller.com> wrote:
>
> From: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>
>
> The u-boot hush shell doesn’t support the unset command to clear a
> variable and therefore an empty value ("c=") should be a valid value
> for the set_local_var function to clear the variable. This partial
> reverts commit aa722529635c ("common: cli_hush: avoid dead code") and
> only checks for a `=` in the string. Additionally explicit call the
> unset_local_var function to remove the variable if the value is empty.
>
> Signed-off-by: Stefan Herbrechtsmeier <stefan.herbrechtsmeier at weidmueller.com>
>
> ---
>
> Changes in v2:
> - Use `!var` instead of `var == NULL`
>
>  common/cli_hush.c | 8 +++++++-
>  1 file changed, 7 insertions(+), 1 deletion(-)

Reviewed-by: Simon Glass <sjg at chromium.org>