Function str_lowering

common/utils.c:230–237

}

char *str_lowering(const void *ctx, const char *string TAKES)
{
	char *ret;

	ret = tal_strdup(ctx, string);
	for (char *p = ret; *p; p++) *p = tolower(*p);
	return ret;
}

char *str_uppering(const void *ctx, const char *string TAKES)
{