Edit code in the editor

Files open in a full code editor, with syntax colors, completion, diagnostics, go to definition, rename, formatting and Git markers. It loads the first time you open a file, so a chat-only session does not pay for it.

Availability: Completion, hover, diagnostics and navigation come from a language server that Localix installs the first time you open a file of that language. See Language servers. Colors, folding, find and multi-cursor work without one.

Open a file

Pick a file in the file tree, press Cmd/Ctrl+P to go to a file by name, or click a path in a terminal or in the agent's reply. Press Cmd/Ctrl+Shift+P for the command palette. The workspace guide covers tabs, preview tabs and the editor grid.

Write with completion and hints

• Completion: the list opens as you type, after ., quotes and /. Press Ctrl+Space to ask for it by hand.
• Hover and signature help: rest the pointer on a symbol for its type and docs. Parameter hints open inside a call.
• Inlay hints: parameter names and inferred types appear inline. Turn them off in Settings → Editor → Annotations.
• Diagnostics: errors and warnings are underlined. Unused code is faded and deprecated code is struck through.
• Quick fixes: press Cmd/Ctrl+. on a problem for fixes and refactors. On an error the menu also offers Fix with Agent, which sends the problem and the code around it to the file's chat.

Move around

In the macOS desktop app, Cmd+T opens a new workspace tab, so workspace symbols are on Cmd+Option+Shift+O there; Cmd+P still goes to a file. Go back and forward answer to Alt+Left and Alt+Right when the caret is not in a text field, since inside the text they move by word; the command palette lists them as Go back and Go forward. Every key can be changed in Settings → Shortcuts; see Keyboard shortcuts.

The breadcrumb above the file shows where the caret is. Open it to browse the file's symbols, or click one to jump to its line.

Suggestions as you type

Localix can also predict your next edit with a model. It is off by default and uses model usage when on. Turn on Inline completion in the model picker's background workloads, and give it a model if the chat's model is not the one you want.

After a pause, a suggestion appears as dimmed text at the caret, or as a small diff for a change elsewhere in the file. Press Tab to accept and Escape to reject. Alt+\ asks for one now, and Alt+] and Alt+[ step between several. The chat box and the commit message use the same setting.

Settings

Settings → Editor holds the rest:

• Editing: auto save after a delay, and reusable preview tabs.
• On save: format on save (on by default; it formats with the language server and saves as usual where that server cannot format), trim trailing whitespace and insert a final newline (both off).
• Code display: Git change markers on the scrollbar and bracket pair colors (both on), word wrap and visible whitespace.
• Annotations: inline Git blame (on) and inlay hints (on).

When the agent edits a file

When the agent writes a file you have open, the editor updates in place and keeps your cursor and undo history; changed lines are highlighted until you type. If you have unsaved edits, a banner offers Compare, Overwrite disk or Discard & reload. The workspace guide has the details.

Limits

Syntax colors cover common languages such as TypeScript, JavaScript, Python, Rust, Go, Java, C, C++, Ruby, shell, Dockerfile, YAML, JSON, HTML, CSS, SQL, TOML and Markdown. Other files open as plain text. A language without a built-in server has colors but no completion; see Language servers for the list and for adding more through a plugin.