From: Peter R. Mueller-Roemer (pmr@informatik.uni-frankfurt.de)
Date: Sat Dec 11 2004 - 10:53:12 CST
Philippe Verdy wrote:㰡䑏䍔奐䔠桴浬⁐啂䱉䌠∭⼯圳䌯⽄呄⁈呍䰠㐮〱⁔牡湳楴楯
湡氯⽅丢㸼桴浬㸼桥慤㸼瑩瑬放㰯瑩瑬放㰯桥慤㸼扯摹㸼⽢潤社㰯桴浬
> The repertoire of all possible combining characters sequences is
> already infinite in Unicode, as well as the number of "default
> grapheme clusters" they can represent.
>
For a fixed length of combining character sequence (base + 3 combining
marks is the most I have seen graphically distinguishable) the repertore
is still finite.
I am enthused about some nicely distinuishable sequences e.g. u + macron
+ diaeresis shows nicely as a long long vowel u-Umlaut, whereas u +
diaeresis + macron displays as long vowel u with trema above to be
spoken as a separate vowel. BRAVO! I do not see a good reason why does
not work for all other base characters, particularly on all vowels (e,
i, o combine in undesirable fashion, a only in one newest version of a
unicode font).
I can add an accute accent to each sequence but the accent is smuged
into the previous complex characters in an ugly default overtype mode.
Another GOOD solution: The single combining Hebrew-dagesh point 'finds'
the right 'inner' place in all the Hebrew consonants and some Latin base
characters, why should overtype uglyness be allowed in many other cases.
There seems to be no difficulty to implement composition of complex
character from inside out.
Can't we join forces to request a default graphical representation, so
that legible, distinguishable complex symbols must be generated by
future unicode-fonts? The technical details are not too complex and the
expressiveness and ease of use of Unicode would be greatly enhanced.
The Greek accute and grave accents should by themselves combine centered
over any base-character; and if together with a spiritus asper or lenis
should be minimally separated from the accent horizontally and display
centered over the base character.
Hebrew vowel-points and accents also need to be fitted under any single
base characteer.
Samaritan complex characters should be composable of short combining
sequences.
Peter R. Mueller-Roemer
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