Get modern rubyfmt working

Per #627, the previous behavior of the rubyfmt formatter class included
an embedded version of the rubyfmt script. This isn't really a workable
solution anymore as the program has evolved beyond a simple ruby script
to include native modules.  This instead changes the formatter class to
rely on a `rubyfmt` executable on the user's `$PATH`.  Because rubyfmt
is not currently installable via bundler and is in a pre-release state,
users are expected to have followed the necessary installation
instructions from the [project
README](https://github.com/penelopezone/rubyfmt/blob/master/README.md#how-do-i-use-it).
The current instructions recommend adding an alias, but vscode will not
respect that (or at least vscode-ruby doesn't). Instead I have a
[commit](fables-tales/rubyfmt@19d5946)
submitted in [a PR](fables-tales/rubyfmt#201)
which will make it easier to install an actual executable shim script.

Author: wadetandy

CHANGELOG.md

@@ -75,7 +75,7 @@ Improvements:
 - Support SLIM heredocs [#274](https://github.com/rubyide/vscode-ruby/issues/274)
 - Support heredocs defined inline during a method call [#183](https://github.com/rubyide/vscode-ruby/issues/183)
 - Drop `spawn-rx` for custom version which allows greater control over failed commands
-- Support [RubyFMT](https://github.com/samphippen/rubyfmt) as a formatter [#445](https://github.com/rubyide/vscode-ruby/issues/445)
+- Support [RubyFMT](https://github.com/penelopezone/rubyfmt) as a formatter [#445](https://github.com/rubyide/vscode-ruby/issues/445)
 - Add command palette entries for viewing extension and language server logs (`Ruby: Show Output Channel` and `Ruby: Show Language Server Output Channel`)
 - Support multiline and keyword option YARD comments [#371](https://github.com/rubyide/vscode-ruby/pull/371)
 - Improve/Fix Block Parameter Highlighting [#514](https://github.com/rubyide/vscode-ruby/pull/514)

docs/formatting.md

@@ -5,7 +5,7 @@ The language server currently supports formatting via the following formatters:
 - [RuboCop](https://github.com/rubocop-hq/rubocop)
 - [Standard](https://github.com/testdouble/standard)
 - [Rufo](https://github.com/ruby-formatter/rufo)
-- [RubyFMT](https://github.com/samphippen/rubyfmt)
+- [RubyFMT](https://github.com/penelopezone/rubyfmt)
 
 ## Configuration
 

docs/language-server.md

@@ -7,7 +7,7 @@ The server is built to be extensible, accurate, and performant with such feature
 - Automatic Ruby environment detection with support for rvm, rbenv, chruby, and asdf
 - Robust language feature extraction powered by the [tree-sitter](https://tree-sitter.github.io/tree-sitter/) project
 - Lint support via RuboCop, Reek, and Standard
-- Format support via RuboCop, Standard, and Rufo
+- Format support via RuboCop, Standard, Rubyfmt, and Rufo
 - Semantic code folding support
 - Semantic highlighting support
 - Intellisense support

packages/language-server-ruby/src/formatters/RubyFMT.ts

@@ -1,15 +1,14 @@
-import path from 'path';
+import { URI } from 'vscode-uri'
 import BaseFormatter from './BaseFormatter';
 
-const RUBYFMT_PATH = path.resolve(__dirname, 'rubyfmt.rb');
-
 export default class RubyFMT extends BaseFormatter {
 	get cmd(): string {
-		return 'ruby';
+		return 'rubyfmt';
 	}
 
 	get args(): string[] {
-		return ['--disable=gems', RUBYFMT_PATH];
+		const documentPath = URI.parse(this.document.uri);
+		return [documentPath.fsPath];
 	}
 
 	get useBundler(): boolean {