Our Elixir project at AddressFinder is pretty standard, so you can probably start with ours: [ formatter.exs with rules for which file types and locations should be formatted. The format task looks for a file in your project directory named. Step 3: configure default formatting rules Give it a go on a file in your project and see the changes it makes.
The formatter is delivered as a mix task and can be easily tested by running something like: mix format You should see a message such as: Erlang/ OTP 20 Elixir 1. You can then confirm you have the upgrade by typing: elixir -version If this is the case, the the following is all you need to do: brew upgrade elixir If you are using OSX, then you have likely installed Elixir using Homebrew. Obviously, you will need to have the most recent version of Elixir installed locally. Those steps are essentially "run a command on save", and it turns out someone has already written an extension! emeraldwalk/vscode-runonsave reads Visual Studio Code settings, matches files on a regular expression, and then runs a user-supplied command.Here is a step by step guide on how to configure Visual Studio Code to automatically format your Elixir code using the new built-in formatter included in version 1.6. After about 10 minutes into the exercise, I realized that this plugin was going to be quite dumb:
I started down the path of writing my own Visual Studio Code plugin to run google-java-format as a formatter.
I also stumbled across Dev-Snippets/vscode-google-java-format-provider, which seemed promising, but I was unable to get it to register as a formatter (and I am not the only one). Worse, it modified things like license headers, rendering them invalid. While this does change the default format of the code, in my testing it did not match the output of running google-java-format directly from the command line. This seemed like a great fit, since I am already using RedHat's Java Language Support. This will instruct the editor to use the "GoogleStyle" when formatting code instead of the built-in style.
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