[bugfix] XQuery 3.1 mandatory fixes from v2/xq4-core-functions (audit extract #3 subset)#6344

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joewiz:extract/xq4-core-functions-3-1-subset

Commits on May 11, 2026

[bugfix] Improve XPath regex compliance: validate patterns and support XQ4 lookaround

joewiz
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claude
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[feature] Improve fn:unparsed-text conformance and add function type checking

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[bugfix] Fix function call/ref XQTS failures: reserved names, context, promotions

joewiz
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claude
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[bugfix] Fix variable declaration error codes for XQuery 3.1 compliance

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[feature] Version-aware XPath regex validation with XQ4 extensions

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[bugfix] Fix fn:contains-token collation parameter to accept empty sequence

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[bugfix] fn:load-xquery-module: check loaded module's own version

joewiz
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[bugfix] Tighten XPath regex validation to reject more invalid constructs

joewiz
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[bugfix] XPath regex: validate back-references and tighten char class grammar

joewiz
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[test] LoadXQueryModuleContentTest: align with backward-compat semantics

joewiz
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[bugfix] Adapt v2/xq4-core-functions extraction for develop's XQ 3.1-only parser

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claude
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[refactor] Address Codacy findings from PR #6344 review

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Commits on May 12, 2026