# Method Standards.IDNA.nameprep()

Method nameprep

  ``string` nameprep(`string` `s`, `bool`|`void` `allow_unassigned`)`

Description

  Prepare a Unicode string for ACE transcoding. Used by to_ascii. Nameprep is a profile of Stringprep, which is described in RFC 3454.

Parameter `s`

  The string to prep.

Parameter `allow_unassigned`

  Set this flag the the string to transform is a "query string", and not a "stored string". See RFC 3454.