Re: polytonic Greek: diacritics above long vowels ᾱ, ῑ, ῡ

From: Jukka K. Korpela <>
Date: Tue, 06 Aug 2013 09:55:34 +0300

2013-08-05 23:46, Richard Wordingham wrote:

> The requirement is that conformant processes not think they are doing
> the right thing by treating canonically equivalent strings
> differently. If there is latitude in a process, e.g. rendering, I
> can't find a requirement to treat canonically equivalent strings
> identically. Can you?

The first sentence is somewhat difficult to understand. I suppose the
key is the word “the” vs. “a” in “the right thing”.

As far as I can see, the standard allows canonically equivalent strings
to be handled differently, but it says that software should not expect
other software to do so.

In particular, in rendering, a program might display U+03B5 GREEK SMALL
LETTER EPSILON U+0384 GREEK TONOS by drawing ε and placing ΄ over it,
but U+03AD GREEK SMALL LETTER EPSILON WITH TONOS by simply using a glyph
for it in the font being used. This might be regarded as being of
inferior quality, but hardly as non-conforming.

Received on Tue Aug 06 2013 - 01:57:28 CDT

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