Function pattern_callback

builtin/grep.c:1027–1034

}

static int pattern_callback(const struct option *opt, const char *arg,
			    int unset)
{
	struct grep_opt *grep_opt = opt->value;
	BUG_ON_OPT_NEG(unset);
	append_grep_pattern(grep_opt, arg, "-e option", 0, GREP_PATTERN);
	return 0;
}

int cmd_grep(int argc,
	     const char **argv,