[lawrencecchen]

Summary

• Cmd+Shift+Enter toggles zoom on the focused pane, expanding it to fill the workspace
• Splitting (Cmd+D, Cmd+Shift+D) or creating new tabs (Cmd+T) auto-unzooms
• Zoom state shown as icon indicator in sidebar tab
• Customizable shortcut via Settings (KeyboardShortcutSettings)
• Includes bonsplit zoom toggle support (vendor/bonsplit updated)

Closes #136

Test plan

• Cmd+Shift+Enter toggles zoom on focused pane
• Cmd+D / Cmd+Shift+D / Cmd+T auto-unzooms
• Zoom icon appears in sidebar tab when zoomed
• Shortcut customizable in Settings

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
cmux	Building	Preview, Comment	Feb 27, 2026 9:46am

[coderabbitai]

Warning

Rate limit exceeded

@lawrencecchen has exceeded the limit for the number of commits that can be reviewed per hour. Please wait 3 minutes and 34 seconds before requesting another review.

⌛ How to resolve this issue?

After the wait time has elapsed, a review can be triggered using the @coderabbitai review command as a PR comment. Alternatively, push new commits to this PR.

We recommend that you space out your commits to avoid hitting the rate limit.

🚦 How do rate limits work?

CodeRabbit enforces hourly rate limits for each developer per organization.

Our paid plans have higher rate limits than the trial, open-source and free plans. In all cases, we re-allow further reviews after a brief timeout.

Please see our FAQ for further information.

📥 Commits

Reviewing files that changed from the base of the PR and between dca8992 and 20cb164.

📒 Files selected for processing (6)

• Sources/AppDelegate.swift
• Sources/ContentView.swift
• Sources/KeyboardShortcutSettings.swift
• Sources/TabManager.swift
• Sources/Workspace.swift
• vendor/bonsplit

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment
• Commit unit tests in branch issue-136-zoom-pane

---

_{Comment @coderabbitai help to get the list of available commands and usage tips.}

[greptile-apps]

Greptile Summary

Implemented pane zoom/maximize functionality for split terminal layouts.

• Added Cmd+Shift+Enter keyboard shortcut to toggle zoom on the focused pane, expanding it to fill the workspace
• Integrated with bonsplit submodule (updated to c4b8f5c) for zoom state management and UI indicators
• Implemented auto-unzoom behavior when creating new splits (Cmd+D, Cmd+Shift+D) or new tabs (Cmd+T)
• Added command palette entry with context-aware availability (only shown for terminal panels with splits)
• Configured context menu shortcuts mapping for zoom, rename, and new terminal actions
• Extended keyboard shortcut system to support Return key (↩) with proper keyCode handling (36, 76 for Return and Keypad Enter)

The implementation follows existing patterns in the codebase and integrates cleanly with the BonsplitController API.

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• Clean implementation that follows existing codebase patterns. The zoom feature is well-integrated across all necessary layers (keyboard shortcuts, command palette, context menus, and workspace management). Auto-unzoom behavior prevents confusing states. The submodule update provides the core zoom functionality. No logic errors, security issues, or architectural concerns identified.
• No files require special attention

Important Files Changed

Filename	Overview
Sources/AppDelegate.swift	Added keyboard shortcut handling for toggle split zoom (Cmd+Shift+Return) and Return key support in shortcut matching
Sources/ContentView.swift	Added command palette entry for "Toggle Pane Zoom" with proper context filtering for terminal panels with splits
Sources/KeyboardShortcutSettings.swift	Added toggleSplitZoom action with Cmd+Shift+Return default, including Return key (↩) display and keyCode mappings (36, 76)
Sources/TabManager.swift	Implemented zoom toggle logic and auto-unzoom behavior when creating new surfaces, splits, or browser splits
Sources/Workspace.swift	Integrated BonsplitController zoom methods, added context menu shortcuts mapping, and handled toggleZoom context action
vendor/bonsplit	Updated bonsplit submodule to c4b8f5c to add zoom/maximize functionality for panes

Sequence Diagram

sequenceDiagram
    participant User
    participant AppDelegate
    participant TabManager
    participant Workspace
    participant BonsplitController
    
    Note over User: Cmd+Shift+Enter pressed
    User->>AppDelegate: Key event
    AppDelegate->>AppDelegate: matchShortcut(toggleSplitZoom)
    AppDelegate->>TabManager: toggleFocusedSplitZoom()
    TabManager->>Workspace: toggleSplitZoom(panelId)
    Workspace->>Workspace: paneId(forPanelId)
    Workspace->>BonsplitController: togglePaneZoom(inPane)
    BonsplitController-->>Workspace: Bool (success)
    alt Zoom succeeded
        Workspace->>Workspace: focusPanel(panelId)
        Workspace-->>TabManager: true
        TabManager-->>AppDelegate: true
    else Zoom failed
        Workspace-->>TabManager: false
        TabManager-->>AppDelegate: false
    end
    
    Note over User: Auto-unzoom on split/tab creation
    User->>AppDelegate: Cmd+D (split) or Cmd+T (new tab)
    AppDelegate->>TabManager: createSplit() or newSurface()
    TabManager->>Workspace: clearSplitZoom()
    Workspace->>BonsplitController: clearPaneZoom()
    BonsplitController-->>Workspace: Bool
    TabManager->>TabManager: Create split/surface

Loading

_{Last reviewed commit: 20cb164}

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 20cb164989

ℹ️ About Codex in GitHub

Your team has set up Codex to review pull requests in this repo. Reviews are triggered when you

• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

If Codex has suggestions, it will comment; otherwise it will react with 👍.

Codex can also answer questions or update the PR. Try commenting "@codex address that feedback".

[chatgpt-codex-connector]

Refresh context-menu shortcuts after settings updates

contextMenuShortcuts is initialized once per workspace, but shortcut values are user-editable at runtime; after changing toggleSplitZoom (or the other mapped actions) in Settings, existing workspaces keep the old context-menu key equivalents because this dictionary is never rebuilt. That leaves the UI out of sync with the active shortcuts until the workspace is recreated or the app restarts, so this should be refreshed alongside the existing shortcut-change observers.

Useful? React with 👍 / 👎.