67 static char *env_eol(char *env)  in env_eol()  argument
69 	while (*env && *env != '\n')  in env_eol()
70 		++env;  in env_eol()
71 	return env;  in env_eol()
74 static char *env_invalid_eol(char *env)  in env_invalid_eol()  argument
76 	char *eol = env_eol(env);  in env_invalid_eol()
80 	printf("Invalid environment variable: %s\n", env);  in env_invalid_eol()
85 static char *env_next(char *env)  in env_next()  argument
89 	if (!*env)  in env_next()
90 		return env;  in env_next()
92 	if (isalpha(*env) || *env == '_') {  in env_next()
95 		p = env + 1;  in env_next()
106 			env = env_invalid_eol(env);  in env_next()
107 			return *env ? env_next(env + 1) : env;  in env_next()
109 		return env;  in env_next()
112 	p = env;  in env_next()
120 		env = env_eol(env);  in env_next()
122 		env = env_invalid_eol(env);  in env_next()
124 	return *env ? env_next(env + 1) : env;  in env_next()
127 void setup_env(char *env, int size)  in setup_env()  argument
129 	char *eof = env + size, *p = env;  in setup_env()
138 	while (env < eof) {  in setup_env()
140 			env = env_next(env);  in setup_env()
141 		if (!*env || env >= eof)  in setup_env()
143 		__environ[i++] = env;  in setup_env()
144 		while (env < eof && *env && !(newline && *env == '\n'))  in setup_env()
145 			++env;  in setup_env()
146 		*env++ = '\0';  in setup_env()