On 2019-08-12 8:30 AM, Andrew West wrote:
> This issue was discussed at WG2 in 2013
> (https://www.unicode.org/L2/L2013/13128-latvian-marshal-adhoc.pdf),
> when there was a recommendation to encode precomposed letters L and N
> with cedilla*with no decomposition*, but that solution does not seem
> to have been taken up by the UTC.
Group One dots their lowercase "i" letters with little flowers and Group
Two dots theirs with little hearts. Group Two considers flowers
unacceptable and Group One rejects hearts. Because of legacy character
sets there's a precomposed character encoded called "LATIN LOWER CASE I
WITH HEART", but it was misnamed and is normally drawn with a flower
instead. Group Two tries to encode "LATIN LOWER CASE I" plus "COMBINING
HEART" to get the thing to display properly. But because there's a
decomposition involved, the font engine substitutes the glyph mapped to
"LATIN LOWER CASE I WITH HEART" in the display for the string "LATIN
LOWER CASE I" plus "COMBINING HEART". This thwarts Group Two because
they still get the flower.
The solution is to deprecate "LATIN LOWER CASE I WITH HEART". It's only
in there because of legacy. It's presence guarantees round-tripping
with legacy data but it isn't needed for modern data or display. Urge
Groups One and Two to encode their data with the desired combiner and
educate font engine developers about the deprecation. As the rendering
engines get updated, the system substitution of the wrongly named
precomposed glyph will go away.
This presumes that the premise of user communities feeling strongly
about the unacceptable aspect of the variants is valid. Since it has
been reported and nothing seems to be happening, perhaps the casual
users aren't terribly concerned. It's also possible that the various
user communities have already set up their systems to handle things
acceptably by installing appropriate fonts.
Received on Wed Aug 14 2019 - 04:06:36 CDT
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