L2/17-105

Comments on Public Review Issues
(January 19 - May 07, 2017)

The sections below contain links to permanent feedback documents for the open Public Review Issues as well as other public feedback as of May 02, 2017, since the previous cumulative document was issued prior to UTC #150 (January 2017). Some items in the Table of Contents do not have feedback here.

Contents:

The links below go directly to open PRIs and to feedback documents for them, as of May 02, 2017.

Issue Name Feedback Link
351 Combined registration of the KRName collection and of sequences in that collection (feedback) IVD
350 Unicode 10.0.0 Beta (feedback)
349 Registration of additional sequences in the Adobe-Japan1 collection (feedback) IVD
348 Proposed Update UTS #51, Unicode Emoji (feedback)
347 Proposed Update UTS #46, Unicode IDNA Compatibility Processing (feedback)
346 Proposed Update UAX #42, Unicode Character Database in XML (feedback) no feedback to date
345 Proposed Update UAX #11 East Asian Width (feedback) no feedback to date
344 New Unicode Character Property EquivalentUnifiedIdeograph (feedback) no new feedback
342 Proposed Update UAX #50 Unicode Vertical Text Layout (feedback)
341 Proposed Update UAX #29 Unicode Text Segmentation (feedback)
340 Proposed Update UAX #9 Unicode Bidirectional Algorithm (feedback) new fdbk; no new draft
339 Proposed Update UAX #45 U-source Ideographs (feedback)
338 Proposed Update UAX #38 Unicode Han Database (Unihan) (feedback)
336 Proposed Update UAX #41, Common References for Unicode Standard Annexes (feedback) no feedback to date
335 Proposed Update UAX #14, Unicode Line Breaking Algorithm (feedback)
334 Proposed Update UTS #39, Unicode Security Mechanisms (feedback)
333 Proposed Update UAX #31, Unicode Identifier and Pattern Syntax (feedback)
332 Proposed Update UTS #10, Unicode Collation Algorithm (feedback)
329 Proposed Update UAX #44, Unicode Character Database (feedback)

The links below go to locations in this document for feedback.

Feedback to UTC / Encoding Proposals
Feedback on UTRs / UAXes
Error Reports
Other Reports

Note: The section of Feedback on Encoding Proposals this time includes:
L2/17-056  L2/17-071  L2/17-077  L2/17-078  L2/17-086  L2/17-091  L2/17-092  L2/17-113 

 


Feedback to UTC / Encoding Proposals

Date/Time: Fri Mar 24 04:14:52 CDT 2017
Name: Christoph Päper
Report Type: Feedback on an Encoding Proposal
Opt Subject: L2/17-071 Gender-Neutral Human-form Emoji

(This has already been sent to the ESC)

> > 3.d.iii. U+1F9D5 person with headscarf

Unlike other role, profession and activity sequences, Office Worker and
Swimmer emojis are wearing different clothes in all current implementations of
Emoji 4.0+.

- 👨‍💼 http://emojipedia.org/male-office-worker/
- 👩‍💼 http://emojipedia.org/female-office-worker/
- 🏊‍♂️ http://emojipedia.org/man-swimming/
- 🏊‍♀️ http://emojipedia.org/woman-swimming/

These are *cultural conventions*, whereas U+1F930 Pregnant Woman and U+1F931
Breast Feeding have no male counterpart for *biological reasons*. (I'm not
sure about U+1F9D4 Bearded Person.)

Wearing a headscarf is also just a cultural thing which is not limited to
women (cf. stereotypical sheikhs). The selection factors for 3.d. hence are a
non-sequitur.

Similar considerations apply to U+1F473 Man with Turban and U+1F472 Man with
Gua Pi Mao. Both types of headwear are traditionally only worn by men. The
original JCarrier emojis were obviously intended as stereotypical
representations of Chinese and Indian men (or people). Likewise, U+1F471
Person with Blond Hair (and Long Nose) was really a stereotypical
European/Western person. One could argue that, for instance, new Woman with
Bindu and Geisha characters could be female counterparts for U+1F473/2. This
would actually already cover stereotypes for 4 out of 5 emoji skin tone
modifiers, i.e. a Person with Afro Hairdo or something like that would be
needed to not further discriminate against the darkest skin tone.

Another often overlooked emoji with gender representation issues is U+1F6B9
Mens Symbol and, less so, U+1F6BB Restroom. They are usually showing an
abstract stick figure without any gender-specific attributes. It only becomes
a representation of a man when put into contrast to a woman, i.e. either
internal in U+1F6BB or with external U+1F6BA Womens Symbol nearby, which is
usually indicated by a skirt as a culturally gender-specific token. You might
want to consider to add a recommendation to vendors for making U+1F6BB a truly
neutral variant and U+1F6B9 more obviously male.

Date/Time: Sat Apr 8 11:16:25 CDT 2017
Name: Ken Lunde
Report Type: Feedback on an Encoding Proposal
Opt Subject: L2/17-092 feedback

Although I did not submit a formal proposal, I would like to point out that I
raised the possibility of encoding these two characters in June of 2011 on the
"unicore" mailing list, and the discussion ended by stating that the existing
upper and lowercase Roman numerals were encoded for compatibility with legacy
standards, specifically East Asian ones. My interest in this is that the
Adobe-Japan1-6 character collection includes glyphs for these two characters.

-- Ken

Date/Time: Mon Apr 10 16:01:33 CDT 2017
Name: Christoph Päper
Report Type: Feedback on an Encoding Proposal
Opt Subject: L2/17-086 Emoji_Component

No emoji implementation is know to currently do so, but UTR#51 has been
mentioning the possibility to use arbitrary combining characters with emoji
characters, U+20E0 COMBINING ENCLOSING CIRCLE BACKSLASH in particular (which
matches the emoji character U+1F6AB No Entry Sign). The UTC/ESC should
consider to amend this proposal to include at least this combining character.

Date/Time: Sat Apr 15 11:51:54 CDT 2017
Name: Ken Lunde
Report Type: Feedback on an Encoding Proposal
Opt Subject: Feedback on L2/17-091 and small kana

If we were to accept Japan's suggestion in L2/17-091 to completely map out the
missing small kana and to reserve a block for them, then encoding them as
proposals come in and are accepted, the number of necessary code points
appears to be 56. 36 of these correspond to small hiragana (small versions of
きくこ*さしすせそたちてとなにぬねのはひふへほまみむめもらりるれろゐ*ゑ*を*ん -- asterisks follow those that are
currently in the pipeline), and the remaining 20 correspond to small katakana
(small versions of キコ*サセソタチテナニネノマミメモヰ*ヱ*ヲ*ン* -- asterisks follow those that
are currently in the pipeline). Their character names would be as follows (the
nine that are currently in the pipeline are marked with their tentative code
points):

HIRAGANA LETTER SMALL KI
HIRAGANA LETTER SMALL KU
HIRAGANA LETTER SMALL KO (U+1B127)
HIRAGANA LETTER SMALL SA
HIRAGANA LETTER SMALL SI
HIRAGANA LETTER SMALL SU
HIRAGANA LETTER SMALL SE
HIRAGANA LETTER SMALL SO
HIRAGANA LETTER SMALL TA
HIRAGANA LETTER SMALL TI
HIRAGANA LETTER SMALL TE
HIRAGANA LETTER SMALL TO
HIRAGANA LETTER SMALL NA
HIRAGANA LETTER SMALL NI
HIRAGANA LETTER SMALL NU
HIRAGANA LETTER SMALL NE
HIRAGANA LETTER SMALL NO
HIRAGANA LETTER SMALL HA
HIRAGANA LETTER SMALL HI
HIRAGANA LETTER SMALL HU
HIRAGANA LETTER SMALL HE
HIRAGANA LETTER SMALL HO
HIRAGANA LETTER SMALL MA
HIRAGANA LETTER SMALL MI
HIRAGANA LETTER SMALL MU
HIRAGANA LETTER SMALL ME
HIRAGANA LETTER SMALL MO
HIRAGANA LETTER SMALL RA
HIRAGANA LETTER SMALL RI
HIRAGANA LETTER SMALL RU
HIRAGANA LETTER SMALL RE
HIRAGANA LETTER SMALL RO
HIRAGANA LETTER SMALL WI (U+1B128)
HIRAGANA LETTER SMALL WE (U+1B129)
HIRAGANA LETTER SMALL WO (U+1B12A)
HIRAGANA LETTER SMALL N
KATAKANA LETTER SMALL KI
KATAKANA LETTER SMALL KO (U+ 1B12B)
KATAKANA LETTER SMALL SA
KATAKANA LETTER SMALL SE
KATAKANA LETTER SMALL SO
KATAKANA LETTER SMALL TA
KATAKANA LETTER SMALL TI
KATAKANA LETTER SMALL TE
KATAKANA LETTER SMALL NA
KATAKANA LETTER SMALL NI
KATAKANA LETTER SMALL NE
KATAKANA LETTER SMALL NO
KATAKANA LETTER SMALL MA
KATAKANA LETTER SMALL MI
KATAKANA LETTER SMALL ME
KATAKANA LETTER SMALL MO
KATAKANA LETTER SMALL WI (U+ 1B12C)
KATAKANA LETTER SMALL WE (U+ 1B12D)
KATAKANA LETTER SMALL WO (U+ 1B12E)
KATAKANA LETTER SMALL N (U+ 1B12F)

That is all.

Date/Time: Thu Apr 20 16:45:37 CDT 2017
Name: Christoph Päper
Report Type: Feedback on an Encoding Proposal
Opt Subject: [L2/17-056] Use VS-16 instead of VS-3 = East Asian Fullwidth Form and VS-2 = Centered Form

Assuming UTS#51 will soon feature a useful definition of what kind of
presentation is "Emoji" (i.e. colorful optional but common, ideographic grid
mandatory), this proposal may be able to reuse the conventional semantics
associated with VS-16, although variation selectors are generally considered
to be meaningless without their entry in StandardizedSequences.txt.

In other words, emoji glyphs are always presented in a square em cell and this
is the desired behavior of the "East Asian Fullwidth" column, so the emoji
variation selector VS-16 could be used instead of VS-3. Emojis are usually
also centered horizontally and vertically within the character cell, which is
also desired for the affected characters, except for the quotation marks, and
it is also what the second table is all about, so the use of VS-2 there could
also be substituted by VS-16.

The default (Western) form which is using VS-1 in the proposal could also be
changed to VS-15, but that's probably less convincing. To be more systematic,
VS-2 should then be replaced by VS-14.

# Western form, East Asian form, and East Asian fullwidth form variation sequences
0021 FE0E; Western form; # EXCLAMATION MARK
0021 FE0D; East Asian form; # EXCLAMATION MARK
0022 FE0E; Western form; # QUOTATION MARK
0022 FE0D; East Asian form; # QUOTATION MARK
0027 FE0E; Western form; # APOSTROPHE
0027 FE0D; East Asian form; # APOSTROPHE
0028 FE0E; Western form; # LEFT PARENTHESIS
0028 FE0D; East Asian form; # LEFT PARENTHESIS
0029 FE0E; Western form; # RIGHT PARENTHESIS
0029 FE0D; East Asian form; # RIGHT PARENTHESIS
002C FE0E; Western form; # COMMA
002C FE0D; East Asian form; # COMMA
002D FE0E; Western form; # HYPHEN-MINUS
002D FE0D; East Asian form; # HYPHEN-MINUS
002E FE0E; Western form; # FULL STOP
002E FE0D; East Asian form; # FULL STOP
002F FE0E; Western form; # SOLIDUS
002F FE0D; East Asian form; # SOLIDUS
0030 FE0E; Western form; # DIGIT ZERO
0030 FE0D; East Asian form; # DIGIT ZERO
0031 FE0E; Western form; # DIGIT ONE
0031 FE0D; East Asian form; # DIGIT ONE
0032 FE0E; Western form; # DIGIT TWO
0032 FE0D; East Asian form; # DIGIT TWO
0033 FE0E; Western form; # DIGIT THREE
0033 FE0D; East Asian form; # DIGIT THREE
0034 FE0E; Western form; # DIGIT FOUR
0034 FE0D; East Asian form; # DIGIT FOUR
0035 FE0E; Western form; # DIGIT FIVE
0035 FE0D; East Asian form; # DIGIT FIVE
0036 FE0E; Western form; # DIGIT SIX
0036 FE0D; East Asian form; # DIGIT SIX
0037 FE0E; Western form; # DIGIT SEVEN
0037 FE0D; East Asian form; # DIGIT SEVEN
0038 FE0E; Western form; # DIGIT EIGHT
0038 FE0D; East Asian form; # DIGIT EIGHT
0039 FE0E; Western form; # DIGIT NINE
0039 FE0D; East Asian form; # DIGIT NINE
003A FE0E; Western form; # COLON
003A FE0D; East Asian form; # COLON
003B FE0E; Western form; # SEMICOLON
003B FE0D; East Asian form; # SEMICOLON
003F FE0E; Western form; # QUESTION MARK
003F FE0D; East Asian form; # QUESTION MARK
005B FE0E; Western form; # LEFT SQUARE BRACKET
005B FE0D; East Asian form; # LEFT SQUARE BRACKET
005D FE0E; Western form; # RIGHT SQUARE BRACKET
005D FE0D; East Asian form; # RIGHT SQUARE BRACKET
007B FE0E; Western form; # LEFT CURLY BRACKET
007B FE0D; East Asian form; # LEFT CURLY BRACKET
007D FE0E; Western form; # RIGHT CURLY BRACKET
007D FE0D; East Asian form; # RIGHT CURLY BRACKET
007E FE0E; Western form; # TILDE
007E FE0D; East Asian form; # TILDE
00B7 FE0E; Western form; # MIDDLE DOT
00B7 FE0D; East Asian form; # MIDDLE DOT
2011 FE0E; Western form; # NON-BREAKING HYPHEN
2011 FE0D; East Asian form; # NON-BREAKING HYPHEN
2012 FE0E; Western form; # FIGURE DASH
2012 FE0D; East Asian form; # FIGURE DASH
2013 FE0E; Western form; # EN DASH
2013 FE0D; East Asian form; # EN DASH
2014 FE0E; Western form; # EM DASH
2014 FE0D; East Asian form; # EM DASH
2014 FE0F; East Asian fullwidth form; # EM DASH
2018 FE0E; Western form; # LEFT SINGLE QUOTATION MARK
2018 FE0D; East Asian form; # LEFT SINGLE QUOTATION MARK
2018 FE0F; East Asian fullwidth form; # LEFT SINGLE QUOTATION MARK
2019 FE0E; Western form; # RIGHT SINGLE QUOTATION MARK
2019 FE0D; East Asian form; # RIGHT SINGLE QUOTATION MARK
2019 FE0F; East Asian fullwidth form; # RIGHT SINGLE QUOTATION MARK
201A FE0E; Western form; # SINGLE LOW-9 QUOTATION MARK
201A FE0D; East Asian form; # SINGLE LOW-9 QUOTATION MARK
201C FE0E; Western form; # LEFT DOUBLE QUOTATION MARK
201C FE0D; East Asian form; # LEFT DOUBLE QUOTATION MARK
201C FE0F; East Asian fullwidth form; # LEFT DOUBLE QUOTATION MARK
201D FE0E; Western form; # RIGHT DOUBLE QUOTATION MARK
201D FE0D; East Asian form; # RIGHT DOUBLE QUOTATION MARK
201D FE0F; East Asian fullwidth form; # RIGHT DOUBLE QUOTATION MARK
201E FE0E; Western form; # DOUBLE LOW-9 QUOTATION MARK
201E FE0D; East Asian form; # DOUBLE LOW-9 QUOTATION MARK
2026 FE0E; Western form; # HORIZONTAL ELLIPSIS
2026 FE0D; East Asian form; # HORIZONTAL ELLIPSIS
2026 FE0F; East Asian fullwidth form; # HORIZONTAL ELLIPSIS
203C FE0E; Western form; # DOUBLE EXCLAMATION MARK
203C FE0D; East Asian form; # DOUBLE EXCLAMATION MARK
203C FE0F; East Asian fullwidth form; # DOUBLE EXCLAMATION MARK
2047 FE0E; Western form; # DOUBLE QUESTION MARK
2047 FE0D; East Asian form; # DOUBLE QUESTION MARK
2047 FE0F; East Asian fullwidth form; # DOUBLE QUESTION MARK
2048 FE0E; Western form; # QUESTION EXCLAMATION MARK
2048 FE0D; East Asian form; # QUESTION EXCLAMATION MARK
2048 FE0F; East Asian fullwidth form; # QUESTION EXCLAMATION MARK
2049 FE0E; Western form; # EXCLAMATION QUESTION MARK
2049 FE0D; East Asian form; # EXCLAMATION QUESTION MARK
2049 FE0F; East Asian fullwidth form; # EXCLAMATION QUESTION MARK
2E3A FE0E; Western form; # TWO-EM DASH
2E3A FE0D; East Asian form; # TWO-EM DASH
2E3A FE0F; East Asian fullwidth form; # TWO-EM DASH
2E3B FE0E; Western form; # THREE-EM DASH
2E3B FE0D; East Asian form; # THREE-EM DASH
2E3B FE0F; East Asian fullwidth form; # THREE-EM DASH

# Left-justified form and centered form variation sequences
3001 FE0E; left-justified form; # IDEOGRAPHIC COMMA
3001 FE0F; centered form; # IDEOGRAPHIC COMMA
3002 FE0E; left-justified form; # IDEOGRAPHIC FULL STOP
3002 FE0F; centered form; # IDEOGRAPHIC FULL STOP
FF01 FE0E; left-justified form; # FULLWIDTH EXCLAMATION MARK
FF01 FE0F; centered form; # FULLWIDTH EXCLAMATION MARK
FF0C FE0E; left-justified form; # FULLWIDTH COMMA
FF0C FE0F; centered form; # FULLWIDTH COMMA
FF0E FE0E; left-justified form; # FULLWIDTH FULL STOP
FF0E FE0F; centered form; # FULLWIDTH FULL STOP
FF1A FE0E; left-justified form; # FULLWIDTH COLON
FF1A FE0F; centered form; # FULLWIDTH COLON
FF1B FE0E; left-justified form; # FULLWIDTH SEMICOLON
FF1B FE0F; centered form; # FULLWIDTH SEMICOLON
FF1F FE0E; left-justified form; # FULLWIDTH QUESTION MARK
FF1F FE0F; centered form; # FULLWIDTH QUESTION MARK

Date/Time: Thu Apr 27 12:12:17 CDT 2017
Name: Kushim Jiang
Report Type: Feedback on an Encoding Proposal
Opt Subject: Comment on L2/17-113

1. Actually when we use a PETRI DISH, the bacteria should be grown over a
layer of culture media, which can't be shown according to the picture. So the
picture of PETRI DISH should be corrected.

2. When PI is located with the atom symbol, PI should mean PION, a kind of
elementary particle. So there should be TAUON in the block for equality, or
the PI should be deleted because there isn't a kind of specific variant for
the elementary particle.

Date/Time: Sun Apr 30 22:10:29 CDT 2017
Name: Christoph Päper
Report Type: Feedback on an Encoding Proposal
Opt Subject: [L2/17-077] Use VS-16 instead of VS-1 and VS-2

The title of L2/17-077 = [N4793] reads "Proposal to add standardized variation
sequences for chess notation", but it is really about the distinction between
chess game notation (i.e. moves) and chess board diagrams (i.e. positions).
Move notation, in European writing systems at least, works well with
proportional figurine glyphs sitting on the baseline. Position diagrams would
benefit from square glyphs with the pieces centered vertically and
horizontally within them.

Only 2D diagrams (and hence classic typefaces intended to typeset them)
regularly use the characteristic "white" and "black" backgrounds of
checkerboards, because in game notation, that information is encoded in the
[A-H][1-8] coordinates used ubiquitously. In print books, "black" is in fact
usually rendered as a diagonal hatching pattern akin U+25A8 ▨, which is
visually less heavy. Alas, this hatching pattern is elsewhere associated with
a purple, green or orange color ('purpure', 'vert' or 'orange' tincture), cf.
[N4011], [Wikicommons].

I agree with the proposal in principle, i.e. that there should be variation
sequences for existing and future chess piece characters in Unicode (cf.
L2/17-033 and 034). I strongly believe, however, that it should reuse
variation selectors VS-15 and VS-16 as canonically used for text-style and
emoji-style, respectively, instead of more arbitrary VS-1 and VS-2.


Precedents
----------

The emoji font used by Samsung, and thus on millions of devices, has colorful
bitmap glyphs for the Unicode chess pieces U+2654..F, as documented before for
[L2/16-087]/[L2/16-088]. They are "colorful" in that they are always rendered
in solid black and white, not the local foreground and backgrounds colors,
which would be the behavior for the classic Unicode terms "Black" (solid) and
"White" (hollow).

[My First HDML] is the only resource I could find which asserts that the now
[defunct Openwave Mobile Browser 6.2, as used by the Japanese telecom provider
[KDDI au, also supported chess pieces, using numeric codes 577 through 588.
[Documented emoji sets KDDI D] and KDDI F] consistently show a gap between 518
[and 700. Archived Openwave] documentation only mentions additions at 500
[through 561:

>>Icons 1 to 175 and 500 to 536 are supported by Openwave Mobile Browser
6.1 and 6.2; 537 to 561 are supported by 6.2 only. I could neither find
documentation on Openwave 7.x nor successfully get to work an emulator of
theirs.

Chess pieces have been proposed before to gain `Emoji` status in [L2/16-021].
Related action item 146-A108 has been closed 2016-05-15, but from the
documentation publicly available it is not clear to me how it has been
resolved.

There are several pairs of emoji characters for black and white squares. The
full-size ones, U+2B1B/C seem most appropriate and have default emoji
presentation.


Emoji Presentation
------------------

UTS51 is still a bit unclear about what "emoji presentation" actually means exactly.

>> ED-1. emoji — A colorful pictograph that can be used inline in text. Internally the representation is either (a) an image or (b) an encoded character.
>> 2 Design Guidelines
>>
>> ...
>> Current practice is for emoji to have a square aspect ratio, deriving from
their origin in Japanese. For interoperability, it is recommended that this
practice be continued with current and future emoji. They will typically have
about the same vertical placement and advance width as CJK ideographs. Since
there have been monochrome emojis, e.g. [Emojione B&W], [Adobe Source Emoji],
Windows 7 [Segoe UI], [Symbola] and first-generation i-mode devices, it does
not make sense to make a colorful appearance mandatory for emojis. All known
implementations of emojis, however, are using square glyphs. (A single
implementation is known to have also used double and triple wide B&W emojis)


Counter proposal
----------------

On the [Unicode mailing list], I have tried to convince the authors of this
proposal, Michael Everson and Garth Wallace, that emoji presentation of chess
pieces would be enough to satisfy the valid use cases they presented, but they
refused to endorse this change (as well as the alternative one to use the same
codepoint for an empty square regardless of its color). I showed that fonts or
higher-level technologies could algorithmically determine the correct field
color for a glyph in a row of eight characters within a chess board diagram
with almost perfect accuracy.

The changes would be made to recently introduced emoji-variation-sequences.txt instead of in StandardizedVariants.txt.

# text-style versus emoji-style variation sequences
2654 FE0E; text style;  # WHITE CHESS KING
2654 FE0F; emoji style; # WHITE CHESS KING
2655 FE0E; text style;  # WHITE CHESS QUEEN
2655 FE0F; emoji style; # WHITE CHESS QUEEN
2656 FE0E; text style;  # WHITE CHESS ROOK
2656 FE0F; emoji style; # WHITE CHESS ROOK
2657 FE0E; text style;  # WHITE CHESS BISHOP
2657 FE0F; emoji style; # WHITE CHESS BISHOP
2658 FE0E; text style;  # WHITE CHESS KNIGHT
2658 FE0F; emoji style; # WHITE CHESS KNIGHT
2659 FE0E; text style;  # WHITE CHESS PAWN
2659 FE0F; emoji style; # WHITE CHESS PAWN
265A FE0E; text style;  # BLACK CHESS KING
265A FE0F; emoji style; # BLACK CHESS KING
265B FE0E; text style;  # BLACK CHESS QUEEN
265B FE0F; emoji style; # BLACK CHESS QUEEN
265C FE0E; text style;  # BLACK CHESS ROOK
265C FE0F; emoji style; # BLACK CHESS ROOK
265D FE0E; text style;  # BLACK CHESS BISHOP
265D FE0F; emoji style; # BLACK CHESS BISHOP
265E FE0E; text style;  # BLACK CHESS KNIGHT
265E FE0F; emoji style; # BLACK CHESS KNIGHT
265F FE0E; text style;  # BLACK CHESS PAWN
265F FE0F; emoji style; # BLACK CHESS PAWN

References
----------

[UTS51]: http://www.unicode.org/reports/tr51/tr51-11.html 
[N4793]: http://www.unicode.org/L2/L2017/17077-n4793-chessboard.pdf "N4793 = L2/17-077 'Proposal to add standardized variation sequences for chess notation' by Michael Everson and Garth Wallace (2017-04-01)"
[N4011]:  http://www.unicode.org/L2/L2011/11094-n4011-hatching.pdf "N4011 = L2/11-094 'Proposal to add heraldic hatching characters to the UCS' by Michael Everson (2011-04-01)"
[Wikicommons]: https://commons.wikimedia.org/wiki/File:Coa_Illustration_Tinctures_Eng_2.svg "Table of different systems of 'hatching' (i.e. to represent heraldic tinctures using black-and-white) by User:Madboy74"
[My First HDML]: http://cgi.wap2.jp/emoji/ezweb/?act=new_pict "EZweb New Emoji, 519 to 589"
[KDDI]: https://www.au.com/ezfactory/tec/spec/3.html 
[KDDI D]: https://www.au.com/ezfactory/tec/spec/pdf/typeD.pdf 
[KDDI F]: https://www.au.com/ezfactory/tec/spec/pdf/typeF.pdf 
[Openwave]: http://web.archive.org/web/20090515011632/http://developer.openwave.com:80/documentation/xhtml_mp_css_reference/icons.html 
[Symbola]: http://users.teilar.gr/~g1951d/ 
[Emojione B&W]: https://github.com/Ranks/emojione/tree/2.2.7/assets/svg_bw 
[Adobe Source Emoji]: https://github.com/adobe-fonts/source-emoji 
[Segoe UI]: 
[L2/16-021]: http://unicode.org/L2/L2016/16021-game-pieces-emoji.pdf 
[L2/16-087]: http://unicode.org/L2/L2016/16087-provisional-value-for-emoji.pdf 
[L2/16-088]: http://unicode.org/L2/L2016/16088-chars-for-emoji-provisional.pdf 
  - https://docs.google.com/spreadsheets/d/1-XLoueD__NZtOPNz4bWl_HwOmwGIt_6aEaWV-l_I0UQ/ (broken) 
  - https://docs.google.com/spreadsheets/d/1txhi8XYKFMkCaOOFMI2z1tQkNwhzkUN-htofj-oJ1GM/ (original)
  - https://docs.google.com/spreadsheets/d/1KQDH9uArJr-8m4UvAEd02ixaX_-wauSwjy9qYCwIOvE/ (extended) 
[Unicode mailing list]: http://www.unicode.org/mail-arch/unicode-ml/y2017-m04/0000.html 

Date/Time: Sun May 7 18:45:55 CDT 2017
Name: Kent Karlsson
Report Type: Feedback on an Encoding Proposal
Opt Subject: Feedback on L2/17-077

L2/17-077 suggest using variation sequences to support "plain text" 
printing of chess game boards. While I support the proposal in principle, 
I have one strong objection.

In L2/17-077, it is proposed to use the following for borders:

2581 FE00; Chessboard box drawing; # LOWER ONE EIGHTH BLOCK
258F FE00; Chessboard box drawing; # LEFT ONE EIGHTH BLOCK
2594 FE00; Chessboard box drawing; # UPPER ONE EIGHTH BLOCK
2595 FE00; Chessboard box drawing; # RIGHT ONE EIGHTH BLOCK
2596 FE00; Chessboard box drawing; # QUADRANT LOWER LEFT
2597 FE00; Chessboard box drawing; # QUADRANT LOWER RIGHT
2598 FE00; Chessboard box drawing; # QUADRANT UPPER LEFT
259D FE00; Chessboard box drawing; # QUADRANT UPPER RIGHT

However, box drawing cannot be seen as a variation of the given characters, 
not even by a stretch.

I would instead suggest using actual box drawing characters, and "variate" them:

2500 FE00; Chessboard box drawing (top); # BOX DRAWINGS LIGHT HORIZONTAL (U+2500)
2500 FE01; Chessboard box drawing (bottom); # BOX DRAWINGS LIGHT HORIZONTAL (U+2500)
2502 FE00; Chessboard box drawing (left); # BOX DRAWINGS LIGHT VERTICAL (U+2502)
2502 FE01; Chessboard box drawing (right); # BOX DRAWINGS LIGHT VERTICAL (U+2502)
250C FE00; Chessboard box drawing; # BOX DRAWINGS LIGHT DOWN AND RIGHT (U+250C)
2510 FE00; Chessboard box drawing; # BOX DRAWINGS LIGHT DOWN AND LEFT (U+2510)
2514 FE00; Chessboard box drawing; # BOX DRAWINGS LIGHT UP AND RIGHT (U+2514)
2518 FE00; Chessboard box drawing; # BOX DRAWINGS LIGHT UP AND LEFT (U+2518)

And for double borders:

2550 FE00; Chessboard box drawing (top); # BOX DRAWINGS DOUBLE HORIZONTAL (U+2550)
2550 FE01; Chessboard box drawing (bottom); # BOX DRAWINGS DOUBLE HORIZONTAL (U+2550)
2551 FE00; Chessboard box drawing (left); # BOX DRAWINGS DOUBLE VERTICAL (U+2551)
2551 FE01; Chessboard box drawing (right); # BOX DRAWINGS DOUBLE VERTICAL (U+2551)
2554 FE00; Chessboard box drawing; # BOX DRAWINGS DOUBLE DOWN AND RIGHT (U+2554)
2557 FE00; Chessboard box drawing; # BOX DRAWINGS DOUBLE DOWN AND LEFT (U+2557)
255A FE00; Chessboard box drawing; # BOX DRAWINGS DOUBLE UP AND RIGHT (U+255A)
255D FE00; Chessboard box drawing; # BOX DRAWINGS DOUBLE UP AND LEFT (U+255D)

Note the use of both FE00 and FE01 to distinguish top/bottom and left/right.

(end of this feedback)

Date/Time: Sun May 7 18:53:24 CDT 2017
Name: Kent Karlsson
Report Type: Feedback on an Encoding Proposal
Opt Subject: A "see also" for L2/17-078

In L2/17-078 an updated ordering for Hangul is proposed.

See also CLDR ticket http://unicode.org/cldr/trac/ticket/10246 and
its attachment, giving a CLDR collation tailoring for Hangul.

Feedback on UTRs / UAXes

Date/Time: Thu Apr 27 16:59:58 CDT 2017
Name: Markus Scherer
Report Type: Error Report
Opt Subject: UTS #18 Full Properties with string values

http://www.unicode.org/reports/tr18/#Full_Properties includes ten properties
with string values that seem questionable to me as a requirement for regex
patterns:

- Lowercase_Mapping & Simple_Lowercase_Mapping
- similar for title/upper/case-folding
- Bidi_Mirroring_Glyph & Bidi_Paired_Bracket

Unicode libraries commonly implement case mapping of code points and strings,
and regex matchers commonly implement a case-insensitive mode, but these
properties seem unusual for regex patterns, that is, for selecting characters
to match.

These properties have string values (some limited to single code points) which
are not very useful for selection/matching. In addition, the full case mapping
properties are language-dependent and context-sensitive (Case_Folding has a
Turkic option), and it is therefore unclear what they mean in regex patterns.

I suggest to remove these ten properties from RL2.7 Full Properties.

If not, then please provide syntax examples for a subset that covers all cases
(e.g., Lowercase_Mapping, Case_Folding, Bidi_Mirroring_Glyph) and define the
semantics for those properties that also need language/Turkic/context to be
fully functional. Consider creating a new section beyond Full Properties,
maybe "Extended Properties" (or "unusual" or...).

Note that "full" is already somewhat misleading. There are several UCD
properties that are not listed here, for example most of the Unihan
properties. Unicode also defines properties outside the UCD, such as the emoji
properties.

Note also that the Full Properties are listed with their UCD PropertyAliases,
e.g., "Lowercase_Mapping", but section 1.2.3 Other Properties shows examples
like "[:toLowercase=a:]". It is unclear what the preferred syntax would be.

I do realize that there are other string-valued Full Properties (e.g., Name &
Block); those do make some sense to me for regex patterns.

Date/Time: Thu Apr 27 17:06:44 CDT 2017
Name: Markus Scherer
Report Type: Error Report
Opt Subject: UTS #18 vertical orientation

http://www.unicode.org/reports/tr18/ section 1.2.3 Other Properties has a 
bullet for "vertical orientation from [UTR50]"

UTR #50 is becoming UAX #50, and vo=Vertical_Orientation is a UCD property 
in Unicode 10.

I suggest changing this bullet to "Vertical_Orientation from [UAX50]".

Error Reports


Other Reports

Date/Time: Wed Apr 12 15:07:40 CDT 2017
Name: David Corbett
Report Type: Error Report
Opt Subject: Inadequate description of SignWriting

The two-page description of SignWriting in “The Unicode Standard”, version
9.0, chapter 21, is inadequate. It gives the gist of the encoding model, i.e.
rotations and fills, but not in enough detail to do anything with. For
example, according to L2/12-321 (the proposal) <U+1D9FF SIGNWRITING HEAD,
U+1DA16 SIGNWRITING EYES CLOSED, U+1DA9B SIGNWRITING FILL MODIFIER-2> is a
head with the right eye closed but there is no way to know that by reading the
standard. Also according L2/12-321, headshapes cannot take U+1DAA4 SIGNWRITING
ROTATION MODIFIER-5, but again, the standard does not say so. I suggest
creating a Unicode Technical Standard based on L2/12-321 plus an exhaustive
list of valid SignWriting sequences and their descriptions.

Date/Time: Wed Apr 12 18:53:25 CDT 2017
Name: Jaemin Chung
Report Type: Other Question, Problem, or Feedback
Opt Subject: Proposal to add an informative note to U+332C

I propose to add the following informative note to U+332C ㌬.

• This is an unused character; it is a mistake for the Thai currency 
bahts (バーツ in Japanese).

For details, please see the following post written by Dr. Ken Lunde:
https://blogs.adobe.com/CCJKType/2016/03/bahts-is-parts.html 

Date/Time: Tue Apr 25 06:49:44 CDT 2017
Name: Eiso Chan
Report Type: Public Review Issue
Opt Subject: U+2D544 & Adobe-Japan1 CID+13834

Note: This feedback added here at request of IVD Registrar, for UTC discussion.

U+2D544 in CJK Ext F and Adobe-Japan1 CID+13834 (aka <U+5C0F,U+E0102>) are the same. 
Pls add these to PRI 349 like CID+14187 & CID+14226.