I think that a few compatibility decompositions can be salvaged
from the corpus of Jonathan's "Atomic Theory of Unicode".
Usually, there are compatibility decompositions mapping ligatures
to their component letters, and doubled and tripled symbols to their
single equivalents (except for quotation marks). The following list
are the cases where those patterns were not followed, possibly
by inadvertence. The basis is UnicodeData-3.0.0-beta.txt.
I will comment on the rest of Jonathan's proposal later.
Ligatures:
0152;LATIN CAPITAL LIGATURE OE;Lu;0;L;<compat> 004F 0045;;;;N;LATIN CAPITAL LETTER O E;;;0153;
0153;LATIN SMALL LIGATURE OE;Ll;0;L;<compat> 006F 0065;;;;N;LATIN SMALL LETTER O E;;0152;;0152
04A4;CYRILLIC CAPITAL LIGATURE EN GHE;Lu;0;L;<compat> 041D 0413;;;;N;CYRILLIC CAPITAL LETTER EN GE;;;04A5;
04A5;CYRILLIC SMALL LIGATURE EN GHE;Ll;0;L;<compat> 043D 0433;;;;N;CYRILLIC SMALL LETTER EN GE;;04A4;;04A4
04B4;CYRILLIC CAPITAL LIGATURE TE TSE;Lu;0;L;<compat> 0442 0446;;;;N;CYRILLIC CAPITAL LETTER TE TSE;Abkhasian;;04B5;
04B5;CYRILLIC SMALL LIGATURE TE TSE;Ll;0;L;<compat> 0422 0426;;;;N;CYRILLIC SMALL LETTER TE TSE;Abkhasian;04B4;;04B4
04D4;CYRILLIC CAPITAL LIGATURE A IE;Lu;0;L;<compat> 0410 0415;;;;N;;;;04D5;
04D5;CYRILLIC SMALL LIGATURE A IE;Ll;0;L;<compat> 0430 0435;;;;N;;;04D4;;04D4
05F0;HEBREW LIGATURE YIDDISH DOUBLE VAV;Lo;0;R;<compat> 05D5 05D5;;;;N;HEBREW LETTER DOUBLE VAV;;;;
05F1;HEBREW LIGATURE YIDDISH VAV YOD;Lo;0;R;<compat> 05D5 05D9;;;;N;HEBREW LETTER VAV YOD;;;;
05F2;HEBREW LIGATURE YIDDISH DOUBLE YOD;Lo;0;R;<compat> 05D9 05D9;;;;N;HEBREW LETTER DOUBLE YOD;;;;
Double and triple characters:
02BA;MODIFIER LETTER DOUBLE PRIME;Sk;0;ON;<compat> 02B9 02B9;;;;N;;;;;
2237;PROPORTION;Sm;0;ON;<compat> 2236 2236;;;;N;;;;;
226A;MUCH LESS-THAN;Sm;0;ON;<compat> 003C 003C;;;;Y;MUCH LESS THAN;;;;
226B;MUCH GREATER-THAN;Sm;0;ON;<compat> 003E 003E;;;;Y;MUCH GREATER THAN;;;;
22D8;VERY MUCH LESS-THAN;Sm;0;ON;<compat> 003C 003C 003C;;;;Y;VERY MUCH LESS THAN;;;;
22D9;VERY MUCH GREATER-THAN;Sm;0;ON;<compat> 003E 003E 003E;;;;Y;VERY MUCH GREATER THAN;;;;
Other:
2254;COLON EQUALS;Sm;0;ON;<compat> 003A 003D;;;;Y;COLON EQUAL;;;;
2255;EQUALS COLON;Sm;0;ON;<compat> 003D 003A;;;;Y;EQUAL COLON;;;;
--
John Cowan cowan@ccil.org
I am a member of a civilization. --David Brin
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