[randy3k]

Release 0.3.22

Stacked on #852 (perf/startup-bundle-cache), which must be merged first. The only commit specific to this PR is the release commit.

Highlights

• Faster startup: cache the startup S3 and member metadata bundles on disk across sessions, and probe attached startup packages without loading languageserver in the child process. Bundles are reused only when every package in the dependency graph is unchanged on disk and free of load hooks, and are keyed by library paths (perf: cache startup metadata bundles and avoid loading namespace in package probe #852)
• R6 member metadata fix: fix Namespace exceeds snapshot budget errors for R6-heavy packages such as processx, httr and testthat by storing R6 private and super member tables once per class instead of copying them into every method (fix: bind R6 private environments dynamically to avoid snapshot bloat #853)
• CRAN sanitizer fix: avoid passing a null pointer to memset() when indexing empty parse data, reported by clang-UBSAN / gcc-UBSAN on 0.3.21 (fix: avoid passing null pointer to memset on empty syntax data #850)
• XPath & XML provider speedups: rewrite XPath queries to avoid broad node-set scans and use namespace-free xml2 lookup wrappers (empty_ns()), speeding up inlay hints, semantic tokens, folding ranges, document symbols, type hierarchy, and code actions (Use empty_ns() wrappers for xml2 XPath and child lookups #847, Apply xpath-style findings for efficiency, robustness #846)
• Expanded semantic token coverage: semantic tokens across both parse-data and XML paths for control-flow keywords, \ lambdas, and return() (Emit keyword semantic tokens for control-flow keywords and return() #839), more operators including => (Expand operator semantic token coverage across parse data and XML paths #840), named arguments and scoped formal parameter references (Emit parameter semantic tokens for named arguments and scoped formal references #842), readonly + defaultLibrary built-in constants and placeholders (Emit readonly defaultLibrary semantic tokens for built-in constants and placeholders #843), and {roxygen2} #' documentation, @tag macro, and @param parameter spans (Split {roxygen2} #' comments into documentation, macro, and parameter semantic tokens #844, Keep semantic token parsing compatible with R 4.0 #845)
• Shared package resolution & member metadata: deduplicate ordered package-resolution and member-metadata requests across documents, reuse recent results, coalesce repeated refreshes, and speed up member preparation (Reuse package resolution across short-lived documents #836, New documents always start a fresh R process for package resolution (follow-up to #754) #834, Fix language-feature edge cases and speed up member preparation #826)
• Diagnostics & multi-root workspace fixes: lint client-only/unavailable buffers via temporary text sources while preserving .lintr config and exclusions (Fix lintr diagnostics for files unavailable on the server #830, lintr diagstic support in Docker / remote servers (just by file content) #688), filter temporary diagnostics through symlink aliases such as macOS /var vs /private/var (Fix temporary diagnostic filtering through symlink aliases #835, Temp-directory guard in schedule_diagnostics() never matches on macOS (/var vs /private/var) #833), and resolve relative paths against owning workspace folders (Fix relative file paths in multi-root workspaces #829)
• Completion, formatting & refactoring fixes: fix quoted completion ranking and startup S3 recovery (Fix quoted completion ranking and startup S3 recovery #828, CRAN check failures in 0.3.21 on Fedora and macOS arm64 #827), preserve manual line breaks and delimiters when formatting on Enter (Preserve line breaks and delimiters when formatting on Enter #832, Inappropriate format on type for if () blocks #771, Issue with newline within function #697), rename {roxygen2} @param tags alongside function parameters (Rename roxygen parameter tags with function arguments #831, Rename roxygen @param tags at same time as argument names  #806), and fix quoted symbols, escaped completion strings, and JSON-RPC request ID handling (Fix language-feature edge cases and speed up member preparation #826)

Changes in this PR

• DESCRIPTION: Version: 0.3.22, Date: 2026-11-11
• NEWS.md: release notes for 0.3.22, including closed issues and merged pull requests since 0.3.21

[randy3k]

Holding off on CRAN submission for now — CRAN reported a clang-UBSAN / gcc-UBSAN issue on 0.3.21 (src/navigation.c:278: null pointer passed to memset() in syntax_index_c() when n == 0). Will fix this in a separate PR first and rebase the release branch once merged.