ARXO-2026-0472 · Reported
UAX #29 rev. 49, Section 7: the numbering example “21.01) × $BA, 21.02) × $HY” is a line-breaking rule
The example of hundredths numbering in Section 7 comes from line breaking: UAX #29 has no rule 21 and no classes BA or HY, and the segmentation test rules have no such lines. Revision 47 has the same example.
Consequence
A reader of UAX #29 cannot find the rules the example numbers.
Proposed correction
Replace the example with one from the segmentation test rules.
- Issued by
- Unicode Consortium — Unicode Technical Committee
- Act
- UAX #29 revision 49 (Unicode 18.0.0)
- Place
- Section 7, example of test rule numbering
- Record
- Discrepancy
- Class
- Text of the act
- Where it arose
- The text of the act
- Arxo's conclusion
- Confirmed
- Official text
- Unchanged at last check
- Last checked
- 2026-10-31
Evidence
Contradiction within the text. Quotations are verbatim from the official material; translations are ours and marked.
Where a rule has multiple parts (lines), each one is numbered using hundredths, such as21.01) × $BA21.02) × $HY
How to check it without Arxo's tools
- Open UAX #29 revision 49 (Unicode 18.0.0), Unicode Consortium and find Section 7, example of test rule numbering. Compare the text with the quotation above. A copy is kept in this register: 60fb49ee640a154d-tr29-49.html (SHA-256
60fb49ee640a154d9e40468306c6b283edcef73be3af5ede778107b4787bdec8, copy of the official file). - The finding holds if the quoted passages read as shown and the comparison gives the result stated at the top of this page. If it does not, write to us with the record ID.
How this finding was made
AI agents read the annexes and the data files and compared them; the examples were run through published implementations. An AI coordinator checked each place against the full annex and the trackers, and two further AI models checked the report before filing.
Responsible institutions
- Unicode Consortium — publishes the annex and the Unicode Character Database
Reported to
| Date | Institution | Channel | Reference |
|---|---|---|---|
| 2026-10-31 | Unicode Consortium — one PDF with 18 reports | Message-ID: <CAH-SH71i9Rky90g_YO=CGO3xx7NZFnEg==fkn2PuRp_7WpgjHw@mail.gmail.com> |
Responses
No response recorded.
History
- 2026-10-31Confirmed by Arxo
- 2026-10-31Entered in the register
- 2026-10-31Reported to Unicode Consortium (e-mail)
Cite this record
Arxo Law, Arxo Findings Register, ARXO-2026-0472, https://arxo.io/findings/ARXO-2026-0472/ (status as of 2026-10-31). Data: ARXO-2026-0472.json.