AutoIt extension for Zed Editor

[sumit-m]

I've been building AutoIt support for Zed, a fast, free, open-source editor for Windows, macOS and Linux. It's now available in Zed's extension registry: open Extensions, search for AutoIt, and install.

It uses its own tree-sitter grammar and a native language server written in Rust, so there's nothing extra to install. It picks up AutoIt and SciTE4AutoIt3 installs automatically.

What it does

• Live Au3Check diagnostics as you type. Errors and warnings show up about half a second after you stop typing, without saving.
• Hover docs for 3,542 functions (built-ins and the standard UDFs): signature, parameters, return value, and a link to the help page.
• Go to definition and find references across #included files and the whole project folder.
• Call hierarchy: see who calls a function and what it calls.
• Signature help and parameter hints inside function calls, e.g. MsgBox(flag: 0, title: "Hi", ...).
• Semantic highlighting: your own functions look different from built-in and UDF ones.
• Color swatches next to 0xRRGGBB values in GUI color functions, with RGB/BGR handled per function.
• Quick fixes: add a missing #include <...> for UDF functions, and fix function-name casing.
• Tidy formatting, #region folding, and an outline with parameters and region contents nested.
• Bundled tasks: Run, Au3Check, compile with Aut2Exe or the AutoIt3Wrapper GUI, Au3Info, Koda, and kill the running script.
• 19 snippets for common blocks (Func, If, For, Switch, #Region, MsgBox, ...).

Notes

• Diagnostics, formatting and the tasks need AutoIt/SciTE4AutoIt3, so they're Windows-only. Everything else also works on macOS and Linux.
• Call hierarchy needs Zed 1.19 or newer.
• A few features (signature help, LSP folding, the nested outline) are opt-in Zed settings; the README shows how.

Links

• Extension: https://github.com/sumit-m/zed-autoit
• Language server: https://github.com/sumit-m/autoit-lsp
• Grammar: https://github.com/sumit-m/tree-sitter-autoit

Feedback, bug reports and feature requests are welcome, either here or as GitHub issues.

[paw]

I tried it, but for some reason syntax highlighting didn't work correctly, it only worked correctly in the little preview navigation bar on the right side.

[sumit-m]

On 11/13/2026 at 6:20 PM, paw said:

I tried it, but for some reason syntax highlighting didn't work correctly, it only worked correctly in the little preview navigation bar on the right side.

Can you try the following:

> Close editor and open again

> Uninstall the AutoIt extension and reinstall

Is your Autoit installation from the official installer or through a portable archive? Which version of Windows?