21 	const char *name;  in cmd_env_get()  local
36 		name = argv[1];  in cmd_env_get()
37 		value = getenv(name);  in cmd_env_get()
49 static bool is_shell_env_name(const char *name)  in is_shell_env_name()  argument
53 	if (name == NULL || name[0] == '\0') {  in is_shell_env_name()
57 	for (size_t i = 0, N = strlen(name); i < N; ++i) {  in is_shell_env_name()
58 		c = name[i];  in is_shell_env_name()
82 	const char *name;  in cmd_env_set()  local
86 		name = argv[1];  in cmd_env_set()
94 		name = argv[1];  in cmd_env_set()
102 	if (!is_shell_env_name(name)) {  in cmd_env_set()
107 	ret = setenv(name, value, 1);  in cmd_env_set()