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Rust: Add schema migration for parenthesis nodes
Remove obsolete parenthesized expression and pattern relations when upgrading existing databases, and document the AST change. Co-authored-by: Copilot App <223556219+Copilot@users.noreply.github.com>
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‎rust/downgrades/2b1782c73acb36c74060f9e344fc6cd841face4c/old.dbscheme‎

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‎rust/downgrades/2b1782c73acb36c74060f9e344fc6cd841face4c/rust.dbscheme‎

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‎rust/downgrades/2b1782c73acb36c74060f9e344fc6cd841face4c/upgrade.properties‎

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description: Downgrade to a schema with parenthesized expression and pattern nodes
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compatibility: partial

‎rust/ql/lib/change-notes/2026-11-03-parenthesized-expressions-and-patterns.md‎

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---
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category: minorAnalysis
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* The Rust AST no longer exposes `ParenExpr` and `ParenPat` nodes. Parenthesized expressions and patterns are represented by their inner entities instead.

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