QT4 CG Meeting 179 Agenda 2026-09-08

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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 8 September.

The next meeting is planned for 15 September.

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-176-01: NW to see about improving the linking for record types.
  • [ ] QT4CG-177-01: NW to put the progress graphs back in the agendas.
  • [ ] QT4CG-178-01: CG to review the functx library for uses of node()

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 #2071: 77c deep update
  • PR #2247: 716 Deferred Evaluation in XPath - the f:generator record
  • PR #2350: 708 An alternative proposal for generators
  • PR #2760: 2521 URIs: unify handling of fragment identifiers
  • PR #2789: 2787 XQuery changes to merge declare record and declare type
  • PR #2815: 2567 Extended and restricted record types
  • PR #2862: 2861 Clarify CSV serialization edge cases

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 #2892: 2891 Oxford comma: inconsistencies
  • PR #2890: 2872 Refine supports-dtd option
  • PR #2889: 2887 Fix bad JSON example

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 #2879: Rename fn:system-properties()?#supports-xinclude to match scope

1.6.4. Substantive PRs

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

  • PR #2797: 2699 fn:element-to-map: validation
  • PR #2831: 2809 fn:deep-equal, debug option: nondeterminism
  • PR #2868: 2867 fn:current everywhere
  • PR #2869: 2820 Revise cast expressions to avoid the need for occurrence indicators
  • PR #2875: 2874 Formal equivalencies: bugs
  • PR #2878: 2073 JNodes and Sequences
  • PR #2881: 2873 fn:update: another attempt
  • PR #2885: 2849 xs:integer vs. restricted subtypes
  • PR #2886: 1459 Function properties and arities
  • PR #2889: 2887 Fix bad JSON example
  • PR #2890: 2872 Refine supports-dtd option

1.6.5. Required for V4.0

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

  • Issue #1777: Shallow copy in XSLT with maps and arrays
  • Issue #675: XSLT streaming rules for new constructs

2. Technical agenda

Let’s continue our oldest-to-newest pass from last week.

2.1. PR #2797: 2699 fn:element-to-map: validation

See PR #2797

2.2. PR #2831: 2809 fn:deep-equal, debug option: nondeterminism

See PR #2831

2.3. PR #2868: 2867 fn:current everywhere

See PR #2868

2.4. PR #2869: 2820 Revise cast expressions to avoid the need for occurrence indicators

See PR #2869

2.5. PR #2875: 2874 Formal equivalencies: bugs

See PR #2875

2.6. PR #2878: 2073 JNodes and Sequences

See PR #2878

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

See PR #2881

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

See PR #2885

2.9. PR #2886: 1459 Function properties and arities

See PR #2886

2.10. PR #2889: 2887 Fix bad JSON example

See PR #2889

2.11. PR #2890: 2872 Refine supports-dtd option

See PR #2890

3. Any other business