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## Context Sticky scroll was anchoring multiline signatures to the first outline context row instead of the row containing the symbol name, which could leave the sticky header showing unhelpful context. This change carries each outline item’s `selection_range` through the tree-sitter, LSP, multi-buffer, and editor paths, then uses that range to choose the sticky header row. This is intended to improve sticky scroll generically, not only for one language. It should help wherever symbol data distinguishes the symbol name from the larger symbol range: - tree-sitter outlines that provide a distinct `@name` capture - LSP document symbols whose `selectionRange` is more precise than `range` The actual improvement is still language-dependent, because it relies on the quality of each language’s outline query or language server symbol metadata. Closes #55587 Manual video of the test : [Screencast from 2026-05-10 14-05-46.webm](https://github.com/user-attachments/assets/40f327d3-cab2-4b85-887b-08b541a102bf) ## How to Review `crates/language/src/outline.rs`, `crates/language/src/buffer.rs`, and `crates/language/src/buffer_tests.rs`: Adds `selection_range` to tree-sitter outline items and verifies that multiline signatures can anchor sticky scroll on the symbol-name row while preserving the existing displayed outline text. `crates/project/src/lsp_store/document_symbols.rs`: Threads LSP document symbol `selection_range` into `OutlineItem`, keeping enriched labels and highlight ranges intact while preserving the distinction between the full symbol range and the selected name range. `crates/multi_buffer/src/multi_buffer.rs`, `crates/editor/src/document_symbols.rs`, `crates/editor/src/editor.rs`, `crates/outline/src/outline.rs`, and `crates/outline_panel/src/outline_panel.rs`: Propagates `selection_range` through the places that remap outline items between buffers, multi-buffers, editors, and outline views. `crates/editor/src/element.rs` and `crates/editor/src/editor_tests.rs`: Uses `selection_range` when computing sticky header rows and adds a regression test covering a multiline signature case from the issue. `crates/language/Cargo.toml` and `Cargo.lock`: Adds `tree-sitter-c` for the language-level regression test fixture. ## Self-Review Checklist - [x] I've reviewed my own diff for quality, security, and reliability - [ ] Unsafe blocks (if any) have justifying comments - [x] The content is consistent with the UI/UX checklist - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable Release Notes: - Fixed sticky scroll anchoring to unhelpful context rows for multiline signatures when symbol metadata provides a more precise name range. |
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