QT4 CG Meeting 183 Agenda 2026-10-06

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Agenda

This meeting will be hosted on Zoom at 16:00BST (15:00GMT, 17:00CEST, 11:00EDT).

See the meeting logistics page for more details.

1. Administrivia

1.1. Roll call

1.2. Approve the agenda

1.3. Approve minutes of previous meetings

Minutes of the previous meeting.

1.4. Next meeting

This meeting is planned for 6 Octoberr.

The next meeting is planned for 13 October.

1.5. Review of open action items [0/9]

  • [ ] QT4CG-143-02: MK to try to recover the ability to extract formal equivalences into tests
  • [ ] QT4CG-167-07: NW to review tests for interpolated strings with edge cases in mind
  • [ ] QT4CG-167-09: NW to close all “nice to have” issues at the end of October if they haven’t progressed
  • [ ] QT4CG-170-01: RD to draft a proposal that attempts to address the lexical issues differently.
  • [ ] QT4CG-177-01: NW to put the progress graphs back in the minutes.
  • [ ] QT4CG-182-01: NW to review CG’s diff script

1.6. Review of open pull requests and issues

This section summarizes all of the issues and pull requests that need to be resolved before we can finish. See Technical Agenda below for the focus of this meeting.

1.6.1. Blocked

The following PRs are open but have merge conflicts or comments which suggest they aren’t ready for action.

  • PR #2831: 2809 fn:deep-equal, debug option: nondeterminism
  • PR #2760: 2521 URIs: unify handling of fragment identifiers
  • PR #2247: 716 Deferred Evaluation in XPath - the f:generator record

1.6.2. Merge without discussion

The following PRs are editorial, small, or otherwise appeared to be uncontroversial when the agenda was prepared. The chairs propose that these can be merged without discussion. If you think discussion is necessary, please say so.

  • PR #2963: 2960 Coercion to derived string types (whitespace)
  • PR #2959: Clarify contrast between two notation devices, ⊑ and ⊆
  • PR #2947: 2876 Editorial Notes (September 2026 edition)
  • PR #2946: 2945 FunctX, 4.0

1.6.3. Close without action

It has been proposed that the following issues be closed without action. If you think discussion is necessary, please say so.

  • Issue #2914: Define a new char/codepoint type.
  • Issue #2913: Analysis and design of restricted integer types for functions.
  • Issue #2806: Serialization `indent-unit`, `line-ending`: allowed characters

1.6.4. Substantive PRs

The following substantive PRs were open when this agenda was prepared.

  • PR #2966: 2965 Regex functions: bugs
  • PR #2964: 2937 Explain the effect of XSD 1.1 on the casting rules
  • PR #2962: 2961 CSV functions: tweaks
  • PR #2958: 2957 Constructor functions for records
  • PR #2949: 2919 fn:drop-while
  • PR #2948: 2919 fn:distinct-by
  • PR #2941: 2938 Parameter defaults: focus of the caller
  • PR #2939: 2936 Named function references: make early errors optional
  • PR #2931: 2930 fn:map-to-element: tweaks
  • PR #2920: 2813 clarifications for xsl:result-document
  • PR #2918: 2600 Options on fn:collection()
  • PR #2911: 2693 Drop type patterns (and other revisions)
  • PR #2885: 2849 xs:integer vs. restricted subtypes
  • PR #2881: 2873 fn:update: another attempt
  • PR #2350: 708 An alternative proposal for generators

1.6.5. Required for V4.0

The following issues are labeled “required for V4.0”.

  • Issue #675: XSLT streaming rules for new constructs

2. Technical agenda

2.1. PR #2966: 2965 Regex functions: bugs

See PR #2966

2.2. PR #2964: 2937 Explain the effect of XSD 1.1 on the casting rules

See PR #2964

2.3. PR #2962: 2961 CSV functions: tweaks

See PR #2962

2.4. PR #2958: 2957 Constructor functions for records

See PR #2958

2.5. PR #2949: 2919 fn:drop-while

See PR #2949

2.6. PR #2948: 2919 fn:distinct-by

See PR #2948

2.7. PR #2941: 2938 Parameter defaults: focus of the caller

See PR #2941

2.8. PR #2939: 2936 Named function references: make early errors optional

See PR #2939

2.9. PR #2931: 2930 fn:map-to-element: tweaks

See PR #2931

2.10. PR #2920: 2813 clarifications for xsl:result-document

See PR #2920

2.11. PR #2918: 2600 Options on fn:collection()

See PR #2918

2.12. PR #2911: 2693 Drop type patterns (and other revisions)

See PR #2911

2.13. PR #2885: 2849 xs:integer vs. restricted subtypes

See PR #2885

2.14. PR #2881: 2873 fn:update: another attempt

See PR #2881

2.15. PR #2350: 708 An alternative proposal for generators

See PR #2350

3. Any other business