QT4 CG Meeting 149 Agenda 2026-01-20

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Agenda

This meeting will be hosted on Zoom at 16:00GMT (17:00CET, 11:00EST).

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 meeting

Minutes of the previous meeting.

1.4. Next meeting

This meeting is planned for 20 January 2026.

The next meeting is planned for 27 January 2026.

1.5. Review of open action items [2/6]

  • [ ] QT4CG-143-02: MK to try to recover the ability to extract formal equivalences into tests
  • [ ] QT4CG-143-03: JK to look for C14N test suites.
  • [ ] QT4CG-144-01: MK to consider if any now lost value comparisons should be added as examples.
  • [X] QT4CG-148-01: NW to draft a PR that marks #2351 items as “at risk” with appropriate definitions at the top of the document
  • [ ] QT4CG-148-02: NW to publish a dated drafter after QT4CG-148-01 is complete.
  • [X] QT4CG-148-03: NW to revise his attempt at #2313 by using the text “node” and a link to the appropriate text

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 #2350: 708 An alternative proposal for generators
  • PR #2345: 2299 Expand pipeline to allow arrow expression in path expression
  • PR #2266: 540 system-property equivalent for XQuery
  • PR #2247: 716 Deferred Evaluation in XPath - the f:generator record
  • PR #2160: 2073 data model changes for JNodes and Sequences
  • PR #2071: 77c deep update
  • PR #2019: 1776: XSLT template rules for maps and array

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 #2383: Attempt to resolve action QT4CG-148-01
  • PR #2364: 2088 File Module: Feedback, Observations

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 #2185: Request for an `fn:xproc` function

1.6.4. Substantive PRs

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

  • PR #2387: 641 NaN/Infinity in JSON
  • PR #2379: Use exported schema to validate function catalogs
  • PR #2376: 2337 Extend xsl:mode/@typed to handle JNodes etc
  • PR #2373: 2359 No conversion to JNode in absolute paths
  • PR #2372: 2344 Change rendition of PIs in HTML5
  • PR #2363: 2349 Revert array:join
  • PR #2362: 2355 bin:infer-encoding: further alignments
  • PR #2313: 2298 XQFO rules: definition of default values
  • PR #2019: 1776: XSLT template rules for maps and array

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 #1584: Review the XML Schema and RELAX NG schemas for XSLT 4.0 for compatibility
  • Issue #1045: Functions to manage namespace usage
  • Issue #675: XSLT streaming rules for new constructs
  • Issue #272: Setting parameter values in xsl:use-package

2. Technical agenda

2.1. PR #2313: 2298 XQFO rules: definition of default values

See #2313.

(To briefly discuss CG’s comment.)

2.2. PR #2387: 641 NaN/Infinity in JSON

See #2387.

2.3. PR #2376: 2337 Extend xsl:mode/@typed to handle JNodes etc

See #2376.

2.4. PR #2373: 2359 No conversion to JNode in absolute paths

See #2373.

2.5. PR #2372: 2344 Change rendition of PIs in HTML5

See #2372.

2.6. PR #2363: 2349 Revert array:join

See #2363.

2.7. PR #2362: 2355 bin:infer-encoding: further alignments

See #2362.

2.8. PR #2379: Use exported schema to validate function catalogs

See #2379.

3. Any other business

Update from JLO about teaching XSLT at the AS Commiunications Congress.