keep old delimiter compatibility

Author: yyx990803

src/config.js

@@ -132,6 +132,16 @@ Object.defineProperty(module.exports, 'delimiters', {
   },
   set: function (val) {
     delimiters = val
+    var unsafeOpen = val[0].charAt(0) + val[0]
+    var unsafeClose = val[1] + val[1].slice(-1)
+    unsafeDelimiters = [unsafeOpen, unsafeClose]
+    if (process.env.NODE_ENV !== 'production') {
+      require('./util').log(
+        'Interpolation delimiters for unsafe HTML will ' +
+        'need to be configured separately as ' +
+        'Vue.config.unsafeDelimiters in 1.0.0.'
+      )
+    }
     textParser.compileRegex()
   }
 })

test/unit/specs/parsers/text_spec.js

@@ -81,6 +81,20 @@ describe('Text Parser', function () {
     expect(res1).toBe(res2)
   })
 
+  it('custom delimiters (0.12 compat)', function () {
+    config.delimiters = ['[%', '%]']
+    assertParse({
+      text: '[%* text %] and [[% html %]]',
+      expected: [
+        { tag: true, value: 'text', html: false, oneTime: true },
+        { value: ' and ' },
+        { tag: true, value: 'html', html: true, oneTime: false }
+      ]
+    })
+    config.delimiters = ['{{', '}}']
+    config.unsafeDelimiters = ['{{{', '}}}']
+  })
+
   it('custom delimiters', function () {
     config.delimiters = ['[%', '%]']
     config.unsafeDelimiters = ['{!!', '!!}']