L2/26-002R5

UTC #186 Agenda

Wednesday, January 21 to Friday, January 23, 2026

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Last updated: January 22, 2026

The UTC will be conducted as a hybrid online/in-person meeting. See the meeting logistics page for details.

Most topics are organized into categories according to working groups that have discussed topics in advance and provided recommendations. UTC discussions for the topic categories are pre-scheduled. Specific topics within each category will be discussed within the scheduled time window. In general, the schedule for individual topics may be fluid. In certain cases, however, specific topics may be scheduled for a specific time: see Scheduled Activies below.

Quorum will be verified each morning and throughout the meeting. All members need to make proxy designations in advance.

Dates and times shown are Pacific Standard time (UTC-8:00).

Meeting Timeline and Scheduled Activities

A tentative meeting timeline is provided below. The following individual topics are scheduled for discussion at specific times.

Agenda item / Topic Document Day and Time
G. Emoji L2/26-008 Wednesday, 10:45 am
F.7 Embedding metadata in plain text L2/26-042 Wednesday, 1:30 pm
E. CJK and Unihan L2/25-231 Wednesday, 3:15 pm
I.2 Proposed JWG for orthographic sequences L2/26-045 Thursday, 9:15 am
B.13 Unicode Administration Friday, 9:40 am

Timeline

🖨️

The following is a tentative timeline for the meeting (expand to see daily details):

Wednesday, January 21, 2026
Admin:
A.1 Quorum
A.2 Agenda
A.3 Review of prior meeting minutes
A.4 Review of UTC action items 		10:30 am
G. Emoji 10:45 am
Liaisons:
B.3.1 ICU-TC
B.4 CLDR
B.10 ISO/IEC JTC 1/SC 22 		morning
F. Properties & algorithms
F.1 PAG report
F.2 PRI #509 D UTS #58
F.3 PRI #510 D UTR #59
F.4 PRI #523 PD UTS #61
F.5 PRI #533 PU UTR #25
F.6 PRI #535 PU UAX #31
F.8 Other documents 		morning
Lunch 12:30 pm to 1:30 pm
F.7 Embedding metadata in plain text 1:30 pm
F. Properties & algorithms (cont’d) afternoon
I.3 Google Summer of Code 2:45 pm
Liaisons:
B.3.2 ICU4X-TC
B.12 ECMA TC 39;
B.6 IETF / ICANN 		afternoon
Break around 3:00 pm
E. CJK and Unihan 3:15 pm
Liaisons:
B.2 IRG 		afternoon

Thursday, January 22, 2026
Admin:
A.1 Quorum
A.5 Calendar review		 9:00 am
I.2 Proposed JWG for orthographic sequences 9:15 am
Liaisons:
B.5 ISO TC 37/SC 2
B.7 SEI
B.8 INFITT
B.9 LSA
B.11 ISO TC 46
B.11.1 ISO 15924/RA 		morning
C.1 Editorial WG report morning
C.2 Charts WG report morning
H.1 Release Management WG report morning
D. Scripts
D.1 SEW report
D.2 PRI #520 PD UAX #60
D.3 Leibniz project proposals 		morning
Break around 11:00 am
D. Scripts (cont’d) morning
Lunch 12:30 pm to 1:30 pm
D. Scripts (cont’d) afternoon
Break around 3:15 pm
D. Scripts (cont’d) afternoon

Friday, January 23, 2026
Admin:
A.1 Quorum 		9:30 am
Liaisons:
B.13 Unicode Administration		 9:40 am
Liaisons:
B.1 ISO/IEC JTC 1/SC 2
[CJK, PAG or script topics, as required] morning
Lunch 12:30 pm to 1:30 pm
[CJK, PAG or script topics, as required] afternoon
H.1 Release Management WG report afternoon
I.1 Other feedback afternoon
Admin:
A.6 Closing dates for PRIs
A.7 L2 representatives 		afternoon
INCITS/L2 meeting around 2:45 pm to 3:30 pm

A. Administrative Topics

Schedule: Wednesday, 10:30 am; Thursday 9:30 am; Friday 9:30 am & afternoon

Details:

A.1 Consortium membership; meeting quorum and proxies

A.2 Agenda review

A.3 Approval of minutes of prior meeting [L2/25-226]

A.4 Action item review

Documents:

A.5 Calendar review [Calendar]

A.6 PRI closing dates [Public Review Issues]

A.7 INCITS/CS&I representatives

B. Liaison Reports & Technical Topics

Schedule: various times—see meeting timeline

Details:

B.1 ISO/IEC JTC 1/SC 2

Schedule: Friday morning

Details:

B.1.1 ISO/IEC 10646 7th edition CD3 [WG2/N5347]


B.1.2 Maintenance of UCS Repertoire via a Maintenance Agency

B.2 IRG (see also IRG topics under E.1)

B.3 ICU

B.3.1 ICU-TC


B.3.2 ICU4X-TC

B.4 CLDR

B.5 ISO TC 37/SC 2

B.6 IETF / ICANN

B.7 SEI Liaison Report [Anushah Hossain, Deborah Anderson, L2/26-013]

B.8 INFITT

B.9 LSA

B.10 ISO/IEC JTC 1/SC 22

B.11 ISO TC 46

B.11.1 ISO 15924/RA

B.12 ECMA TC 39

B.13 Unicode Administration, Infrastructure Group

C. Editorial & Charts Working Groups

Schedule: Thursday afternoon

Details:

C.1 Editorial Working Group

C.1.1 Editorial Working Group Report and Recommendations for UTC #186 Meeting [EDC, L2/26-007]

Topics:

  • Unicode 18.0
  • Future plans
  • Editorial WG process
  • Archival PDF
  • UTR topics
  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) routed to Editorial Working Group [Michelle Perham, L2/26-005]

C.2 Charts Working Group

C.2.1 Charts Working Group Report for UTC #186 [CHARTS, L2/26-011]

Topics:

  • Version 18.0 progress
  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) routed to Charts Working Group [Michelle Perham, L2/26-005]
  • Infrastructure improvements

D. Scripts

Schedule: Thursday morning & afternoon

Details:

D.1 Recommendations to UTC #186 (January 2026) on Script Proposals [Jan Kučera, et al, L2/26-010]

Discussion led by Script Encoding Working Group chair, Jan Kučera, and vice-chairs, Debbie Anderson and Roozbeh Pournader


D.1.1 New Scripts

Details:
  • Final Proposal for Encoding the Mwangwego Script in the UCS [Oreen Yousuf, Daniel Yacob, L2/26-029]
  • Revised Proposal for Encoding the Shaaldaa Script in the UCS [Oreen Yousuf, Daniel Yacob, L2/26-040]
  • Leke script

    Documents:

    • Proposal to encode the Leke script into the Unicode Standard [Frank van de Kasteelen, L2/26-037]
    • Proposal to encode the Leke script into the Unicode Standard [Frank van de Kasteelen, L2/25-249]
  • Proposal to Encode the Luo Lakeside Script in the UCS (revised) [Oreen Yousuf, L2/26-027]
  • Updated proposal to encode Rma script to UCS [Eiso Chan, et al, L2/26-058]
  • Preliminary Proposal to Encode the Tanchangya Script in UTC [Biswajit Mandal, L2/26-039]
  • Preliminary Proposal to Encode the Odùduwà Script in the UCS [Oreen Yousuf, Vyshantha Simha, L2/26-026]
  • Preliminary Proposal for Encoding the N'ti Script in the UCS [Oreen Yousuf, Ibrahima Ceesay, L2/26-028]
  • Libyc script

    Documents:

    • Introduction of the Libyc Script into the Unicode Standard [The North African History Society (SHNA), L2/26-020]
    • Submission Dossier for the Libyc Script to Unicode [Société d'Histoire Nord-Africaine (SHNA), L2/24-247]

D.1.2 New Characters

Details:
  • Revised Proposal to Encode N'ko Phonetic Extensions for Bambara [Boubacar Diakite, Neil Patel, L2/26-015]
  • Response to the encoding of Jihvamuliya and Upadhmaniya in Devanagari [Srinidhi A, Sridatta A, L2/26-019]
  • Unicode request for LHM compound tone diacritic [Kirk Miller, L2/26-031]
  • Unicode request for Romance dialectology symbols [Nicolas Datua, Kirk Miller, L2/26-030]
  • Unicode request to accommodate diacritics below turned i [Nicolas Datua, Kirk Miller, L2/26-023]
  • Musical extension of cossic characters

    Documents:

    • Unicode request for f and g with loop [Kirk Miller, Gavin Jared, L2/26-021]
    • Comment on "Request for f and g with loop" by Miller & Jared [Andreas Stötzner, L2/26-022]
  • Kaithi letter ZHA

    Documents:

    • Proposal to encode the Kaithi Letter ZHA in Unicode [Biswajit Mandal, L2/26-018]
    • Proposal to Encode Two-Dot Nukta in Kaithi [Srinidhi A, Sridatta A, L2/26-051]
  • A Proposal to encode Old Kurdish Alphabet in UCS [Awira A, Eyyub Moradi, L2/25-271]
  • New letter for the Alphabetic Presentation Forms block - ct ligature [Finlay Liam Adkins, L2/26-024]
  • Hebrew Babylonian and Palistinian vocalization signs

    Documents:

    • Proposal to Encode Characters for the Babylonian and Palestinian Vocalization Systems of Hebrew [Aleksandr Andreev, et al, L2/26-038]
    • Proposal to Encode Characters for the Babylonian Vocalization System of Hebrew [Aleksandr Andreev, Christa Müller-Kessler, L2/25-268]

D.1.3 New Symbols

Details:
  • Request to Encode the Omani Rial Currency Symbol in the Unicode Standard [Central Bank of Oman, L2/26-041]
  • Alchemical symbol for calx [Kirk Miller, L2/26-017]

D.1.4 Changes to Characters

Details:
  • Anomalies regarding the representative glyphs of some characters [Eduardo Marin Silva, L2/26-016]
  • EPA names consistency
  • Glyph for U+1F76D RETORT
    • Alchemical symbol for retort [Kirk Miller, L2/26-032]
    • On revision of 1F76D ALCHEMICAL SYMBOL FOR RETORT [Andreas Stötzner, L2/26-056]
  • Ligature names in the Initial Teaching Alphabet [Kirk Miller, L2/26-025]
  • Sundanese Avagraha
    • On Unicode Character Database Update of U+1BBA [Febri Muhammad Nasrullah, L2/26-035]
  • Annotation Requests for Sundanese Characters [Febri Muhammad Nasrullah, L2/26-034]

D.1.5 Other recommendations for UTC action

Details:
  • Ordering of kEH_AltSeq

D.1.6 Public feedback

Details:
  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) routed to Script Encoding Working Group [Michelle Perham, L2/26-005]

D.1.7 Proposals in-progress

Details:
  • Comment on "Request for f and g with loop" by Miller & Jared [Andreas Stötzner, L2/26-022]
  • Ndiko Jonam
    • Proposal to Encode the Ndiko Jonam Script in the UCS [Oreen Yousuf, L2/26-027R]
    • Proposal to Encode the Ndiko Jonam Script in the UCS [Oreen Yousuf, L2/26-055]
  • Preliminary Proposal for Encoding the N'ti Script in the UCS [Oreen Yousuf, Ibrahima Ceesay, L2/26-028R]
  • On Unencoded Characters for Old Sundanese [Febri Muhammad Nasrullah, L2/26-033]
  • Updated Proposal to Encode the Lampung Script (Second Revision) [Febri Muhammad Nasrullah, L2/26-036]
  • Proposal for the encoding of « KORE SEBELI » [Mohamed Bentoura Bangoura, L2/26-050]
  • Proposal to include Luri alphabets [Mohammad Mogoei, et al, L2/26-053]

D.2 PRI #520 Proposed Draft UAX #60, Data for Non Han Ideographic Scripts

Documents:

D.3 Leibniz project proposals

  • Proposed Leibniz additions for Unicode 18.0 [Debbie Anderson, Peter Constable, L2/26-054]

D.4 Egyptian Hieroglyphs

  • Corruption of the basic sign list of Egyptian hieroglyphs in Unicode 16 [Mark-Jan Nederhof, L2/26-059]
  • Answer to document L2/26-059: Corruption of the basic sign list of Egyptian hieroglyphs in Unicode 16, revised [Michel Suignard, L2/26-060]

E. CJK and Unihan

Schedule: Wednesday, 3:15 pm

Details:

Discussion led by CJK and Unihan Group chair, Ken Lunde

E.1 CJK & Unihan Group Recommendations for UTC #186 Meeting [Ken Lunde, L2/26-009]

Details:
  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) routed to CJK & Unihan Working Group [Michelle Perham, L2/26-005]
  • Public review feedback: PRI #534 Proposed Update UAX #38 (see E.2)
  • UAX #38 Unicode Han Database (Unihan)

    Documents:

    • Descriptions vs. usage of the “GU”, “TU” and former “G9” Unihan source prefixes [Harriet Riddle, L2/25-272]
  • UAX #45 U-Source Ideographs
    • Proposal to Add Two Ideographs to UAX #45 [Chiang Chi-Ying, L2/25-270]
    • Proposal to add 1 ideograph used in Japanese ancient books [Lin Anning, L2/25-274]
    • Proposal to add 1 character related to Chinese music ICH projects of Fujian and Taiwan Provinces to UAX #45 [Eiso Chan, L2/25-275]
    • Proposal to add 56 ideographs used in Singapore and Malaysia to UAX#45 [Wang Xieyang, Wang Zirui, L2/26-014]
  • IRG Documents
    • Final proposal to encode CJK Unified Ideographs Components [China & TCA, IRG/N2878]
  • Other topics:
    • Questionable Simplified/Traditional Pairs
    • IRG document migration status
    • Updated provisional Unihan database properties

E.2 PRI #534 Proposed Update UAX #38, Unicode Han Database (Unihan)

Documents:

E.3 Other CJK documents

  • Proposal to add one ideograph to UAX #45 [Yeh Chiang, L2/26-043]
  • Proposal to add one ideograph for Japanese place names to UAX #45 [Tsukada Masaki, L2/26-044]
  • Proposal to add 8 ideographs to UAX #45 [Chiang Chi-Ying, L2/26-057]

F. Properties and Algorithms

Schedule: all items except F.7: Wednesday morning & afternoon

Details:

F.1 PAG: UTC #186 properties feedback & recommendations [Markus Scherer, et al, L2/26-006]

Details:
  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) routed to Properties and Algorithms Group [Michelle Perham, L2/26-005]
  • Stability policy for ID_Compat_Math_(Start|Continue)
  • Soft_Dotted English Phonotypic Alphabet letters
  • U+1D26A: HALF FILLED or HALF-FILLED?
  • Defective decision 184-C19 on two right triangles
  • kEH_Core classification of U+13096
  • U+1B122 KATAKANA LETTER ARCHAIC WU
    • Proposal on two alternate Katakana letters [Eiso Chan, L2/25-151R]
  • Properties for Unicode 18.0 character additions
  • Properties for character proposals
    Documents:
    • Proposal to encode one newly-identified Tangut ideograph [Andrew West, L2/25-165]
    • Adding dagesh xazaq to Hebrew [Ben Denckla, L2/25-175]
    • Changes to Unikemet properties between 17.0β and 17.0 [Robin Leroy, L2/25-178]
    • Proposal to encode Maldivian Rufiyaa Sign in the Unicode Standard [Naail Abdul Rahman, Abdulla Shafeeu, L2/25-122]
    • Technical update on Proposal to encode Jurchen Small Script characters [Viacheslav Zaytsev, Andrew West, L2/25-164]
    • Proposal to encode the Small Seal Script in UCS, 2nd revision [Michel Suignard, et al, WG2/N5344]
    • Proposal to Encode Proto-Cuneiform in Unicode [Steve Tinney, et al, L2/25-211]
    • Proposal to encode mathematical symbols L-2515 [Uwe Mayer, et al, WG2/N5331]
  • Line breaking
    • Proposed updates to Unicode line breaking [Kent Karlsson, L2/25-261]
  • Security: Immutable identifiers, default identifers, XML Name/Nmtoken
  • Security: IdentifierType.txt data organization
  • Security: Identifier_Type classification of Balinese
    • Proposal for Reclassifying the Balinese Script: Response to Unicode [PANDI, L2/25-269]
  • Security: Identifier_Type classification of Buginese
    • Proposal for Reclassifying the Buginese Script [PANDI, L2/25-273]
  • Confusables
    • High priority confusables data
    • Confusables data for dandas
    • Non-NFD confusables data
  • PRI #509 Draft UTS #58, Unicode Link Detection and Serialization—see F.2

F.2 PRI #509 Draft UTS #58, Unicode Link Detection and Serialization

F.3 PRI #510 Proposed Draft UTR #59, East Asian Spacing

F.4 PRI #523 Proposed Draft UTS #61, Unicode Set Notation

Documents:

F.5 PRI #533 Proposed Update UTR #25, Unicode Support for Mathematics

Documents:

F.6 PRI #535 Proposed Update UAX #31, Unicode Identifiers and Syntax

Documents:

F.7 Embedding metadata in plain text

Schedule: Wednesday, 1:30 pm

  • Embedded Metadata in “Plain” Text [Peter Constable, Joshua Hadley, L2/26-042]

F.8 Other documents

  • On Unicode Character Database Update of U+1BBA [Febri Muhammad Nasrullah, L2/26-035]

G. Emoji

Schedule: Wednesday 10:45 am

Details:

Discussion led by Emoji Working Group chair, Jennifer Daniel

G.1 Emoji Standard and Research Working Group Report for UTC #186 (26Q1) [ESC/Jennifer Daniel, L2/26-008]

Topics:

  • Name change to Unicode 18.0 emoji candidate

    Documents:

    • Cracked Smiling Face Emoji Proposal [Jennifer Daniel, L2/26-048]
  • CLDR emoji keyword intake
  • Interoperability audit
  • Emoji calendar

H. Unicode Release Management

Schedule: Thursday morning

Details:

H.1 Release Management Group Report to UTC #185 [Peter Constable, RMG L2/26-012]

Topics:

  • Unicode 18.0 timeline
  • Unicode 18.0 alpha
  • Recommendation of additional characters for 18.0

I. Other business

Details:

I.1 Other feedback

Schedule: Friday afternoon

Documents:

  • Comments on Public Review Issues (Oct 6, 2025 – Dec 29, 2025) [Michelle Perham, L2/26-005]

I.2 Proposed JWG for orthographic sequences

Schedule: Thursday, 9:45 am

  • Proposal: Joint working group for orthographic sequences [Peter Constable, TCG, L2/26-045]

I.3 Google Summer of Code

Schedule: Wednesday 2:45 pm

Meeting Adjournment