QT4 CG Meeting 154 Agenda 2026-03-03

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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 3 March 2026.

The next meeting is planned for 10 March 2026.

1.5. Review of open action items [1/10]

  • [ ] 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.
  • [ ] QT4CG-149-01: CG to draft a new PR with the common rule note.
  • [ ] QT4CG-150-01: NW to ask Jirka for a room at XML Prague for Tuesday/Wednesday
  • [ ] QT4CG-150-04: NW to see about a status update on PR #2345; possibly schedule discussion
  • [ ] QT4CG-151-01: MK to fix the typo in the build-dateTime function.
  • [ ] QT4CG-151-03: NW to investigate why records are formatted incorrectly in XSLT
  • [ ] QT4CG-152-01: MK to add a note about the new and old syntax for names in PR #2446
  • [ ] QT4CG-153-01: MK to investigate the indentation problem.
  • [ ] QT4CG-153-02: MK to turn my suggestions on #1949 into a PR.

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 #2266: 540 system-property equivalent for XQuery
  • 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 #2493: 2408 Misc editorial corrections
  • PR #2485: 2388 Adaptive serialization of anonymous functions
  • PR #2480: 2465 Improve description of FODC0006
  • PR #2479: 2472 drop the term "potential visibility"
  • PR #2469: 2466 Adapt rules of format-number to new comparison rules
  • PR #2468: 2448 Change title of XPath 4.0 specification

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 #2018: Type-checking the result of xsl:apply-templates
  • Issue #1702: Node Updates: Functions
  • Issue #1506: Type declarations: Constructor functions?
  • Issue #1251: Allow sequence constructor in extension instructions that are implemented with named templates
  • Issue #1225: Generalization of Deep Updates
  • Issue #1045: Functions to manage namespace usage
  • Issue #641: Serialization fallback

1.6.4. Substantive PRs

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

  • PR #2492: 2052 fn:collation-available: $usage
  • PR #2491: 2484 Subtyping: abstract types vs choice types
  • PR #2490: 2443 Naming: JNodes, selectors and contents
  • PR #2483: 1479 XQuery: Default Namespace Clarifications
  • PR #2481: 1528 ambiguities in computed node constructors
  • PR #2479: 2472 drop the term "potential visibility"
  • PR #2478: 2476 guaranteed streamability
  • PR #2474: 272 Allow xsl:use-package to set parameters
  • PR #2470: 1310 Functions fn:regex and ?matching-substrings
  • PR #2467: Harmonize the fn: and file: functions that read text
  • PR #2350: 708 An alternative proposal for generators
  • PR #2345: 2299 Expand pipeline to allow arrow expression in path expression
  • PR #2313: 2298 XQFO rules: definition of default values
  • PR #2247: 716 Deferred Evaluation in XPath - the f:generator record
  • 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 #2467: Harmonize the fn: and file: functions that read text

See PR #2467

I think the high-order question here is, do we want to add fallback to the text functions, or leave them alone and add it to bin:decode-string?

2.2. PR #2470: 1310 Functions fn:regex and ?matching-substrings

See PR #2470

2.3. PR #2481: 1528 ambiguities in computed node constructors

See PR #2481

2.4. PR #2483: 1479 XQuery: Default Namespace Clarifications

See PR #2483

2.5. PR #2490: 2443 Naming: JNodes, selectors and contents

See PR #2490

2.6. PR #2491: 2484 Subtyping: abstract types vs choice types

See PR #2491

2.7. PR #2492: 2052 fn:collation-available: $usage

See PR #2492

2.8. PR #2474: 272 Allow xsl:use-package to set parameters

See PR #2474

2.9. PR #2478: 2476 guaranteed streamability

See PR #2478

2.10. PR #2479: 2472 drop the term "potential visibility"

See PR #2479

3. Any other business