Add forceExclusion flag to rubocop setting

readme.md

@@ -2,7 +2,7 @@
 
 [![Join the chat at https://rubyide-slackin.azurewebsites.net](./images/badge.png)](https://rubyide-slackin.azurewebsites.net) [![Build Status](https://api.travis-ci.org/rubyide/vscode-ruby.svg?branch=master)](https://travis-ci.org/rubyide/vscode-ruby) [![Build status](https://ci.appveyor.com/api/projects/status/vlgs2y7tsc4xpj4c?svg=true)](https://ci.appveyor.com/project/rebornix/vscode-ruby)
 
-This extension provides rich Ruby language and debugging support for VS Code. It's still in progress ( [GitHub](https://github.com/rubyide/vscode-ruby.git) ), please expect frequent updates with breaking changes before 1.0. 
+This extension provides rich Ruby language and debugging support for VS Code. It's still in progress ( [GitHub](https://github.com/rubyide/vscode-ruby.git) ), please expect frequent updates with breaking changes before 1.0.
 
 It started as a personal project of [@rebornix](https://github.com/rebornix), aiming to bring Ruby debugging experience to VS Code. Then it turned to be a community driven project. With his amazing commits, [@HookyQR](https://github.com/HookyQR) joined as a contributor and brought users Linting/Formatting/etc, made the debugger more robust and more! If you are interested in this project, feel free to join the [community](https://github.com/rubyide/vscode-ruby/graphs/contributors):  file [issues](https://github.com/rubyide/vscode-ruby/issues/new), fork [our project](https://github.com/rubyide/vscode-ruby) and hack it around and send us PRs, or subscribe to our [mailing list](http://eepurl.com/bTBAfv).
 
@@ -106,6 +106,7 @@ Settings available (in your VSCode workspace) for each of the linters:
 	"lint": true, //enable all lint cops.
 	"only": [/* array: Run only the specified cop(s) and/or cops in the specified departments. */],
 	"except": [/* array: Run all cops enabled by configuration except the specified cop(s) and/or departments. */],
+	"forceExclusion": true, //Add --force-exclusion option
 	"require": [/* array: Require Ruby files. */],
 	"rails": true //Run extra rails cops
 }

src/lint/lib/linters/RuboCop.js

@@ -8,6 +8,7 @@ function RuboCop(opts) {
 
 	this.args = ["-s", "{path}", "-f", "json"] ;
 
+	if (opts.forceExclusion) this.args.push("--force-exclusion")
 	if (opts.lint) this.args.push("-l");
 	if (opts.only) this.args = this.args.concat("--only", opts.only.join(','));
 	if (opts.except) this.args = this.args.concat("--except", opts.except.join(','));
@@ -20,6 +21,9 @@ RuboCop.prototype.processResult = function (data) {
 		return [];
 	}
 	let offenses = JSON.parse(data);
+	if (offenses.summary.offense_count == 0) {
+        return [];
+    }
 	return (offenses.files || [{
 		offenses: []
 	}])[0].offenses;