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Standard ML

v0.2.0 · by Omar Jatoi · added 3 November 2026

Standard ML language support for Zed

LanguagesLanguage servers
Install in Forge SuperView the source

How to install

With Forge Super installed, the button above opens the app on this extension, where you press Install. Nothing is installed until you do.

You can also open the Extensions panel in the app and search for Standard ML. The extension's id is sml.

Don't have Forge Super yet? Download it here.

README

From the extension's repository, written by its authors and not by Mentenaz. See the source.

Zed SML Extension

This extension adds Standard ML language support to the Zed text editor.

Known Issues

There are currently a few known issues, primarily with the language server integration in this extension:

  • Formatting with millet does not currently work (see below to use smlfmt as an external formatter configured in Zed)
  • Project diagnostics do not auto resolve

You can disable the language server by configuring Zed:

{
  "languages": {
    "Standard ML": {
      "enable_language_server": false
    }
  }
}

You can also configure Zed to use smlfmt to format your buffer when you save. Install smlfmt and make sure it's accessible in your path, and add the following configuration:

{
  "languages": {
    "Standard ML": {
      "enable_language_server": false,
      "formatter": {
        "external": {
          "command": "smlfmt"
        }
      }
    }
  }
}

License

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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