Re: [PATCH v4 05/12] sequencer.c: recognize "(cherry picked from ..." as part of s-o-b footer

> When 'cherry-pick -s' is used to append a signed-off-by line to a cherry
> picked commit, it does not currently detect the "(cherry picked from..."
> that may have been appended by a previous 'cherry-pick -x' as part of the
> s-o-b footer and it will insert a blank line before appending a new s-o-b.
>
> Let's detect "(cherry picked from...)" as part of the footer so that we
> will produce this:
> ...
> +static int is_cherry_picked_from_line(const char *buf, int len)
> +{
> +	/*
> +	 * We only care that it looks roughly like (cherry picked from ...)
> +	 */
> +	return len > strlen(cherry_picked_prefix) + 1 &&
> +		!prefixcmp(buf, cherry_picked_prefix) && buf[len - 1] == ')';
> +}