feat(compiler): allow unicode characters for component name as described in #8564

src/compiler/parser/html-parser.js

@@ -11,13 +11,11 @@
 
 import { makeMap, no } from 'shared/util'
 import { isNonPhrasingTag } from 'web/compiler/util'
+import { unicodeLetters } from '../../core/util/lang'
 
 // Regular Expressions for parsing tags and attributes
 const attribute = /^\s*([^\s"'<>\/=]+)(?:\s*(=)\s*(?:"([^"]*)"+|'([^']*)'+|([^\s"'=<>`]+)))?/
-// use https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
-// except \u10000-\uEFFFF because of performance problem
-export const pcenchars = '[\\-\\.0-9_a-zA-Z\\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD]'
-const ncname = `[a-zA-Z_]${pcenchars}*`
+const ncname = `[a-zA-Z_][\\-\\.0-9_a-zA-Z${unicodeLetters}]*`
 const qnameCapture = `((?:${ncname}\\:)?${ncname})`
 const startTagOpen = new RegExp(`^<${qnameCapture}`)
 const startTagClose = /^\s*(\/?)>/

src/core/util/lang.js

@@ -1,5 +1,12 @@
 /* @flow */
 
+/**
+ * unicode letters used for parsing html tags, component names and property paths.
+ * use https://www.w3.org/TR/html53/semantics-scripting.html#potentialcustomelementname
+ * except \u10000-\uEFFFF because of performance problem
+ */
+export const unicodeLetters = 'a-zA-Z\u00B7\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u037D\u037F-\u1FFF\u200C-\u200D\u203F-\u2040\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD'
+
 /**
  * Check if a string starts with $ or _
  */
@@ -23,7 +30,7 @@ export function def (obj: Object, key: string, val: any, enumerable?: boolean) {
 /**
  * Parse simple path.
  */
-const bailRE = /[^\w.$]/
+const bailRE = new RegExp(`[^${unicodeLetters}.$]`)
 export function parsePath (path: string): any {
   if (bailRE.test(path)) {
     return

src/core/util/options.js

@@ -4,7 +4,7 @@ import config from '../config'
 import { warn } from './debug'
 import { nativeWatch } from './env'
 import { set } from '../observer/index'
-import { pcenchars } from '../../compiler/parser/html-parser'
+import { unicodeLetters } from '../../core/util/lang'
 
 import {
   ASSET_TYPES,
@@ -254,7 +254,7 @@ function checkComponents (options: Object) {
 }
 
 export function validateComponentName (name: string) {
-  if (!new RegExp(`^[a-zA-Z]${pcenchars}*$`).test(name)) {
+  if (!new RegExp(`^[a-zA-Z][\\-\\.0-9_a-zA-Z${unicodeLetters}]*$`).test(name)) {
     warn(
       'Invalid component name: "' + name + '". Component names ' +
       'should conform to valid custom element name in html5 specification.'

test/unit/features/instance/methods-data.spec.js

@@ -26,6 +26,9 @@ describe('Instance methods data', () => {
         data: {
           a: {
             b: 1
+          },
+          유니코드: {
+            なまえ: 'ok'
           }
         },
         methods: {
@@ -108,6 +111,15 @@ describe('Instance methods data', () => {
       expect(spy).toHaveBeenCalledWith(1)
     })
 
+    it('handler option in string', () => {
+      vm.$watch('유니코드.なまえ', {
+        handler: 'foo',
+        immediate: true
+      })
+      expect(spy.calls.count()).toBe(1)
+      expect(spy).toHaveBeenCalledWith('ok')
+    })
+
     it('warn expression', () => {
       vm.$watch('a + b', spy)
       expect('Watcher only accepts simple dot-delimited paths').toHaveBeenWarned()