old_env_var
extern int old_env_var, old_env_value, env_auto;
if (old_env_var == OLD_ENV_VAR)
old_env_var = OLD_ENV_VALUE;
old_env_var = OLD_ENV_VAR;
old_env_var = OLD_ENV_VALUE;
int old_env_var = OLD_ENV_VAR;
old_env_var = OLD_ENV_VAR;
*opt_replyp++ = old_env_var;
extern int old_env_var, old_env_value;
if (old_env_var == OLD_ENV_VALUE)