IDNA_ALLOW_UNASSIGNED

IDNA_ALLOW_UNASSIGNED is one of the accepted parameters for:

• idn_to_ascii parameter #2 (optionally as a bitmask)
• idn_to_utf8 parameter #2 (optionally as a bitmask)

IDNA_ALLOW_UNASSIGNED — Allow processing of unassigned codepoints in the input for IDN functions.

IDNA_ALLOW_UNASSIGNED = 1;