Fix bug where word match includes colon

.travis.yml

@@ -18,4 +18,4 @@ before_script:
   - npm install -g typescript -v 2.1.5
   - npm install
   - npm run compile
-script: nvm use && npm run test-debugger
+script: nvm use && npm run test && npm run test-debugger

package.json

@@ -77,6 +77,7 @@
     "vscode:prepublish": "tsc -p ./src",
     "compile": "tsc -p ./src",
     "watch": "tsc -w -p ./src",
+    "test": "node ./node_modules/mocha/bin/mocha --recursive ./out/*.test.js",
     "test-debugger": "node ./node_modules/mocha/bin/mocha --timeout 15000 -u tdd ./out/debugger/tests/*.js",
     "postinstall": "node ./node_modules/vscode/bin/install",
     "update-all-grammars": "node scripts/update-all-grammars",

src/languageConfiguration.test.ts

@@ -0,0 +1,20 @@
+import assert = require('assert');
+import languageConfiguration from './languageConfiguration'
+
+describe('wordPattern', function () {
+	const wordPattern = languageConfiguration.wordPattern;
+
+	it('should not match leading colon in symbols (#257)', function() {
+		const text = ':fnord';
+		const matches = text.match(wordPattern);
+
+		assert.equal(matches[0], 'fnord');
+	});
+
+	it('should not match leading colons in constants (#257)', function() {
+		const text = '::Bar';
+		const matches = text.match(wordPattern);
+
+		assert.equal(matches[0], 'Bar');
+	});
+});

src/languageConfiguration.ts

@@ -0,0 +1,9 @@
+const languageConfiguration = {
+	indentationRules: {
+		increaseIndentPattern: /^(\s*(module|class|((private|protected)\s+)?def|unless|if|else|elsif|case|when|begin|rescue|ensure|for|while|until|(?=.*?\b(do|begin|case|if|unless)\b)("(\\.|[^\\"])*"|'(\\.|[^\\'])*'|[^#"'])*(\s(do|begin|case)|[-+=&|*/~%^<>~]\s*(if|unless)))\b(?![^;]*;.*?\bend\b)|("(\\.|[^\\"])*"|'(\\.|[^\\'])*'|[^#"'])*(\((?![^\)]*\))|\{(?![^\}]*\})|\[(?![^\]]*\]))).*$/,
+		decreaseIndentPattern: /^\s*([}\]]([,)]?\s*(#|$)|\.[a-zA-Z_]\w*\b)|(end|rescue|ensure|else|elsif|when)\b)/,
+	},
+	wordPattern: /(-?\d+(?:\.\d+))|([A-Za-z][^-`~@#%^&()=+[{}|;:'",<>/.*\]\s\\!?]*[!?]?)/,
+};
+
+export default languageConfiguration;

src/ruby.ts

@@ -4,6 +4,7 @@ import { ExtensionContext, languages, workspace } from 'vscode';
 
 import * as utils from './utils';
 
+import languageConfiguration from './languageConfiguration';
 import { registerCompletionProvider } from './providers/completion';
 import { registerFormatter } from './providers/formatter';
 import { registerHighlightProvider } from './providers/highlight';
@@ -20,13 +21,7 @@ export function activate(context: ExtensionContext) {
 	const subs = context.subscriptions;
 
 	// register language config
-	languages.setLanguageConfiguration('ruby', {
-		indentationRules: {
-			increaseIndentPattern: /^(\s*(module|class|((private|protected)\s+)?def|unless|if|else|elsif|case|when|begin|rescue|ensure|for|while|until|(?=.*?\b(do|begin|case|if|unless)\b)("(\\.|[^\\"])*"|'(\\.|[^\\'])*'|[^#"'])*(\s(do|begin|case)|[-+=&|*/~%^<>~]\s*(if|unless)))\b(?![^;]*;.*?\bend\b)|("(\\.|[^\\"])*"|'(\\.|[^\\'])*'|[^#"'])*(\((?![^\)]*\))|\{(?![^\}]*\})|\[(?![^\]]*\]))).*$/,
-			decreaseIndentPattern: /^\s*([}\]]([,)]?\s*(#|$)|\.[a-zA-Z_]\w*\b)|(end|rescue|ensure|else|elsif|when)\b)/,
-		},
-		wordPattern: /(-?\d+(?:\.\d+))|(:?[A-Za-z][^-`~@#%^&()=+[{}|;:'",<>/.*\]\s\\!?]*[!?]?)/,
-	});
+	languages.setLanguageConfiguration('ruby', languageConfiguration);
 
 	// Register providers
 	registerHighlightProvider(context, DOCUMENT_SELECTOR);