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l0ng-ai 6fcf659e04 feat(search): tabbed Search Everywhere with a Sessions tab to resume agent sessions (#969)
* feat(search): replace the command palette with tabbed Search Everywhere

The palette was one flat list that every new kind of row had to be squeezed
into: tabs and SSH hosts rode along as "Switch to Tab: …" and "SSH: …"
commands, and the only way to narrow to one kind was a magic seed word.

Search Everywhere splits it into sources behind one trait — All, Actions,
Terminals, Hosts — each with its own empty-query layout and ranking. The All
tab shows each source's top rows, ordered by best match, with a row that
opens the full tab. Tab / Shift-Tab walk the tabs and keep the query.

- Terminals lists every open tab of every workspace (reusing the switcher's
  tab rows) and jumps to it wherever it lives, plus the shells and agents.
- Hosts replaces the separate "Add Connection" input: a typed address or
  full `ssh …` line offers to connect.
- Fixes Return doing nothing after a search that found nothing, or when the
  search opens pre-filtered: gpui-component re-picks the row from a stale
  frame; the delegate now re-arms the first row.
- Fixes `ssh -p 2222 me@box` being offered as a quick-connect address with
  user `ssh -p 2222 me`.

The keymap action stays `TogglePalette` so custom bindings keep working.

* feat(search): a Sessions tab to resume past agent sessions

Search Everywhere gains a Sessions tab listing the Claude Code and Codex
sessions on this computer, read from ~/.claude/projects and
~/.codex/sessions ($CODEX_HOME). Sessions that ran in the focused tab's
directory lead; the All tab offers the last three of them before anything
is typed. Return opens a new tab in the session's directory and runs the
agent's resume command with its configured launch flags.

- Only each transcript's head and tail are read, off the window thread,
  and cached by path, size and mtime: ~170ms cold for 50 sessions,
  under 1ms warm. The search opens on the cached list and fills in.
- Titles: /rename name, then the agent's own title (ai-title, Codex's
  session_index.jsonl), then the first thing typed, skipping harness
  injections. Codex rollouts it ran for itself (subagent/internal) and
  sessions never asked anything are left out.
- A session whose directory is gone is refused with a notice rather than
  resumed where the agent cannot find it.
2026-09-27 09:38:31 +08:00

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---
title: "Diffs"
description: "The diff overlay: side-by-side or unified, from the sidebar or the panel."
---
## Opening one
| From | How |
|---|---|
| The sidebar | Click a row's `+N −M` counts |
| Source Control | **Open Changes** on a file, or click the row |
| History | Click a file inside a commit's detail view |
A diff docks beside the terminal, in the same column an open file uses, so the
pane you were reading stays on screen. <kbd>Esc</kbd> closes it, and its header
right-clicks to a menu that fills the window with it if you prefer that —
[more about the column →](/window/side-panel#where-it-opens)
<Frame caption="The diff, side by side, across every changed file">
<img src="/images/diff-overlay.webp" alt="The tty7 diff overlay" />
</Frame>
## Side-by-side or unified
**Toggle Unified / Side-by-Side Diff** in Search Everywhere switches between
the two. The choice is global — one setting for every diff, the same call VS
Code's `diffEditor.renderSideBySide` makes — and persists as `diff_view` in
`config.json`.
## What it shows
- Every changed file, with its status and `+N −M`
- **Untracked files** as a preview of their contents, up to 4 MB — past that the
card says the read failed rather than showing a silently cut-off file
- A commit's files, when the diff came from the history
Two limits keep a huge diff from becoming a huge wait:
| Limit | Value | What happens |
|---|---|---|
| Files rendered | 300 | *"… and N more changed files — run git diff in the terminal to see them."* |
| Lines before auto-collapse | 400 per file | Big files start collapsed; expand the ones you care about |
Both are stated in the overlay when they apply — nothing is dropped silently.
## Turning the sidebar shortcut off
If you would rather the sidebar's counts not be clickable, turn off **Settings →
Window & Tabs → Open diff preview from sidebar counts**
(`sidebar_diff_preview: false`). The branch and counts stay on the row; they
just stop opening the overlay.