Maja BackmanandBennet Bo Fenner
a1e236f0c8
# Objective ACP agents (Cursor, Claude Code, Codex, etc.) start a display-only `terminal::Terminal` for each bash tool call. After the call exits, the terminal stays alive so that its output stays visible. But the `alacritty` `Grid` keeps a `Storage` cache that's never reclaimed. Across a long session this memory adds up. Partially fixes #57099 ## Solution Added `Terminal::shrink_to_used`, called from the `Exit` branch of `on_terminal_provider_event`. This calls `Grid::truncate()` on the alacritty grid, shrinking the `Storage` cache portion while leaving user-visible scrollback. ## Testing - `cargo nextest run -p terminal shrink_to_used_preserves_user_visible_scrollback` passes — exercises the path with >10K rows of scrollback. - `./script/clippy` clean. - Manually verified: ran a noisy bash tool call via an ACP agent, observed exit, then scrolled back through the output, no regression. ## Self-Review Checklist: - [x] I've reviewed my own diff for quality, security, and reliability - [x] Unsafe blocks (if any) have justifying comments - [x] The content adheres to Zed's UI standards ([UX/UI](https://github.com/zed-industries/zed/blob/main/CONTRIBUTING.md#uiux-checklist) and [icon](https://github.com/zed-industries/zed/blob/main/crates/icons/README.md) guidelines) - [x] Tests cover the new/changed behavior - [x] Performance impact has been considered and is acceptable Release Notes: - Improved memory usage of ACP terminals after the tool call exits --------- Co-authored-by: Bennet Bo Fenner <bennetbo@gmx.de>
Zed
Welcome to Zed, a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter.
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Zed source code is licensed primarily under GPL-3.0-or-later, with Apache-2.0 components where marked.
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