Re: [PATCH] builtin/log.c: prepend "RFC" on --rfc

>  static int rfc_callback(const struct option *opt, const char *arg, int unset)
>  {
> +	/*
> +	 * "avoid" leak by holding on to a reference to the memory, since we
> +	 * need the string for the lifetime of the process anyway
> +	 */
> +	static char *prefix;
> +
>  	BUG_ON_OPT_NEG(unset);
>  	BUG_ON_OPT_ARG(arg);
> -	return subject_prefix_callback(opt, "RFC PATCH", unset);
> +
> +	free(prefix);
> +	prefix = xstrfmt("RFC %s", ((struct rev_info *)opt->value)->subject_prefix);
> +
> +	return subject_prefix_callback(opt, prefix, unset);
>  }