Function: user-real-login-name

user-real-login-name is a function defined in editfns.c.

Signature

(user-real-login-name)

Documentation

Return the name of the user's real uid, as a string.

This ignores the environment variables LOGNAME and USER, so it differs from user-login-name(var)/user-login-name(fun) when running under su.

Probably introduced at or before Emacs version 14.

Source Code

// Defined in /usr/src/emacs/src/editfns.c
{
  /* Set up the user name info if we didn't do it before.
     (That can happen if Emacs is dumpable
     but you decide to run `temacs -l loadup' and not dump.  */
  if (NILP (Vuser_login_name))
    init_editfns ();
  return Vuser_real_login_name;
}