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Equivalence only in one direction (Was: New Internet Draft on registering IDNs
On Wed, Apr 02, 2003 at 06:35:40PM -0500,
Martin Duerst <duerst@xxxxxx> wrote
a message of 690 lines which said:
> If there are two equivalent characters, and I as a registry want
> to allow a registrant to use either of these when registering,
> do I need two entries in the table?
This issue is not really clear to me in the current draft. But see
> what about tables that don't have the same base character twice,
> but may map to the same character? E.g.:
This is a special case of a more general issue, which is not clearly
stated in the current draft: equivalence goes from the Left Hand Side
to the Right Hand Side but not the reverse.
An example in French:
# Ligature oe
Every occurrence of <U+0153> is equivalent to the string "oe" but the
reverse is not true.
I suggest to clarify the draft in that respect (no, no actual