it is consistent with the code (!!!) .
/* Check the login name for validity. The login name is currently
is allowed to contain lowercase letters and numbers in any
- position and underscore characters and periods in any position
- but the first. */
+ position and underscore characters in any position but the
+ first. */
if ((strlen(login) < MIN_UNAME) || (strlen(login) > MAX_UNAME))
status = UREG_INVALID_UNAME;
}