Synopsis:
   $deuhc(<user@host>)

Technical:
   This function removes a *! or *!*@ from the <user@host>, if it is present.

Practical:
   It can be used as a quick way to get only the hostname from a full address
   argument.

Returns:
   arguments without *! or *!*@ in front

Examples:
   $deuhc(*!user@host)                       returns "user@host"
   $deuhc(*!*@host)                          returns "host"

See Also:
   uhc(6); match(6); userhost(6)