Fix username/mention regexes

* Allow underscore instead of hypen
* Fix domain part handling
* Add tests for remote mention

src/client/app/common/views/components/signup.vue

@@ -76,7 +76,7 @@ export default Vue.extend({
 			}
 
 			const err =
-				!this.username.match(/^[a-zA-Z0-9\-]+$/) ? 'invalid-format' :
+				!this.username.match(/^[a-zA-Z0-9_]+$/) ? 'invalid-format' :
 				this.username.length < 3 ? 'min-range' :
 				this.username.length > 20 ? 'max-range' :
 				null;

src/client/app/dev/views/new-app.vue

@@ -65,7 +65,7 @@ export default Vue.extend({
 			}
 
 			const err =
-				!this.nid.match(/^[a-zA-Z0-9\-]+$/) ? 'invalid-format' :
+				!this.nid.match(/^[a-zA-Z0-9_]+$/) ? 'invalid-format' :
 				this.nid.length < 3                 ? 'min-range' :
 				this.nid.length > 30                ? 'max-range' :
 				null;

src/models/app.ts

@@ -24,7 +24,7 @@ export type IApp = {
 };
 
 export function isValidNameId(nameId: string): boolean {
-	return typeof nameId == 'string' && /^[a-zA-Z0-9\-]{3,30}$/.test(nameId);
+	return typeof nameId == 'string' && /^[a-zA-Z0-9_]{3,30}$/.test(nameId);
 }
 
 /**

src/models/user.ts

@@ -89,7 +89,7 @@ export const isRemoteUser = (user: any): user is IRemoteUser =>
 
 //#region Validators
 export function validateUsername(username: string): boolean {
-	return typeof username == 'string' && /^[a-zA-Z0-9\-]{3,20}$/.test(username);
+	return typeof username == 'string' && /^[a-zA-Z0-9_]{3,20}$/.test(username);
 }
 
 export function validatePassword(password: string): boolean {

src/text/parse/elements/mention.ts

@@ -4,7 +4,7 @@
 import parseAcct from '../../../acct/parse';
 
 module.exports = text => {
-	const match = text.match(/^(?:@[a-zA-Z0-9\-]+){1,2}/);
+	const match = text.match(/^@[a-z0-9_]+(?:@[a-z0-9\.\-]+[a-z0-9])?/i);
 	if (!match) return null;
 	const mention = match[0];
 	const { username, host } = parseAcct(mention.substr(1));

test/text.ts

@@ -9,9 +9,11 @@ const syntaxhighlighter = require('../built/text/parse/core/syntax-highlighter')
 
 describe('Text', () => {
 	it('can be analyzed', () => {
-		const tokens = analyze('@himawari お腹ペコい :cat: #yryr');
+		const tokens = analyze('@himawari @hima_sub@namori.net お腹ペコい :cat: #yryr');
 		assert.deepEqual([
 			{ type: 'mention', content: '@himawari', username: 'himawari', host: null },
+			{ type: 'text', content: ' '},
+			{ type: 'mention', content: '@hima_sub@namori.net', username: 'hima_sub', host: 'namori.net' },
 			{ type: 'text', content: ' お腹ペコい ' },
 			{ type: 'emoji', content: ':cat:', emoji: 'cat'},
 			{ type: 'text', content: ' '},
@@ -20,7 +22,7 @@ describe('Text', () => {
 	});
 
 	it('can be inverted', () => {
-		const text = '@himawari お腹ペコい :cat: #yryr';
+		const text = '@himawari @hima_sub@namori.net お腹ペコい :cat: #yryr';
 		assert.equal(analyze(text).map(x => x.content).join(''), text);
 	});
 
@@ -41,6 +43,14 @@ describe('Text', () => {
 			], tokens);
 		});
 
+		it('remote mention', () => {
+			const tokens = analyze('@hima_sub@namori.net お腹ペコい');
+			assert.deepEqual([
+				{ type: 'mention', content: '@hima_sub@namori.net', username: 'hima_sub', host: 'namori.net' },
+				{ type: 'text', content: ' お腹ペコい' }
+			], tokens);
+		});
+
 		it('hashtag', () => {
 			const tokens = analyze('Strawberry Pasta #alice');
 			assert.deepEqual([