Accumulated Feedback on PRI #266

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Date/Time: Mon Apr 28 23:15:54 CDT 2014
Name: Emmanuel Vallois
Report Type: Public Review Issue
Opt Subject: [PRI #266] Some little things overlooked?

There's an error in the third bullet in the description of kDefaultSortKey.
“U+20000 through U+2F7FF are mapped to 0x06C00 through 0x1F4FF; that is,
0x19400 is subtracted from the Unicode Scalar Value.”
0x2F7FF - 0x19400 = 0x163FF, thus should be changed to “U+20000 through 
U+2F7FF are mapped to 0x06C00 through 0x163FF; that is, 0x19400 is subtracted 
from the Unicode Scalar Value.”

Concerning the data, the diff file shows:
kSpecializedSemanticVariant	534C	<undefined>	->	'U+2099C'
kSpecializedSemanticVariant	2098C	<undefined>	->	'U+2099C'
kSpecializedSemanticVariant	2099C	<undefined>	->	'U+5E4C U+2098C'

I think that the first line is erroneous and is about 5E4C and not 534C (a typo?), as 5E4C is indeed similar to 2099C, even for a non-specialist, whereas 534C seems unrelated.

kSemanticVariant	534C	<undefined>	->	'U+2098C<kHanYu'
kSemanticVariant	2098C	<undefined>	->	'U+5E4C<kHanYu:T'

Here again, I think first line should refer to 5E4C rather than 534C.

Date/Time: Wed Apr 30 18:03:47 CDT 2014
Name: Markus Scherer
Report Type: Error Report
Opt Subject: UAX #38 Unihan kDefaultSortKey

The code point portion of kDefaultSortKey (see
http://www.unicode.org/reports/tr38/#DatabaseDesign) sorts the
BMP compatibility characters after all of the Extensions.

UCA (http://www.unicode.org/reports/tr10/#Implicit_Weights) sorts
them between the original Unihan block and Extension A.

Is this a bug in UAX #38?

I realize that the overall order of kDefaultSortKey is different
from UCA implicit Han primaries, but it seems like the code point
portion should be parallel to UCA implicit primaries, given how small
the difference is.