fix: child data cannot sync to parent in some case, closes #235

Author: fengzilong

dist/regular.js

@@ -880,7 +880,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 	  return paramObj;
 	}
-	_.eventReg = /^on-(\w[-\w]+)$/;
+	_.eventReg = /^on-(\w[-\w]*)$/;
 
 	_.toText = function(obj){
 	  return obj == null ? "": "" + obj;
@@ -4337,7 +4337,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	    }
 
 	    if(!steps || !steps.length) return;
-	      
+
 	    for(var i = 0; i < steps.length; i++){ //init
 
 	      var splice = steps[i];
@@ -4384,7 +4384,7 @@ return /******/ (function(modules) { // webpackBootstrap
 
 	  // oldKeyMap: 复用原来的节点
 	  function updateTrack( newList, oldList, steps,  rawNewValue, oldKeyMap ){
-	    
+
 	    for(var i =0, slen = steps.length; i < slen ;i++){
 	      var step = steps[i];
 	      switch( step.mode){
@@ -4395,7 +4395,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	          addRange(step.index, step.index + step.len, newList, rawNewValue, oldKeyMap )
 	          break;
 	      }
-	    }     
+	    }
 	    var children = group.children;
 	    for(var j=1, len = children.length; j < len; j++){
 	      var child = children[j];
@@ -4405,7 +4405,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	      }
 	    }
 
-	    
+
 	  }
 
 	  function update(newValue, oldValue, steps, oldKeyMap, isSimple){
@@ -4431,13 +4431,13 @@ return /******/ (function(modules) { // webpackBootstrap
 	      if(group.get(1)){
 	        var altGroup = children.pop();
 	        if(altGroup.destroy)  altGroup.destroy(true);
-	      } 
+	      }
 	      return addRange(0, nlen, newList, rawNewValue )
 	    }
 	    // @ {#list} {#else}
 	    if( !nlen ){
 	      if(olen){
-	        removeRange(0, olen, group.children) 
+	        removeRange(0, olen, group.children)
 	      }
 	      if(alternate && alternate.length){
 	        var section = self.$compile(alternate, {
@@ -4455,7 +4455,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	    }
 
 	    if(track){
-	      
+
 	      if( track === true || (isSimple && !steps.length) ){ // track 可能走simple update
 	        updateSimple( newList, oldList,  rawNewValue );
 	      }else{
@@ -4467,15 +4467,15 @@ return /******/ (function(modules) { // webpackBootstrap
 	        }
 	        updateTrack( newList, oldList , steps, rawNewValue, oldKeyMap);
 	      }
-	      
+
 	    }else{
 	      updateLD( newList, oldList, steps, rawNewValue );
 	    }
 
 	  }
 
-	  this.$watch(ast.sequence, update, { 
-	    init: true, 
+	  this.$watch(ast.sequence, update, {
+	    init: true,
 	    keyOf: keyOf,
 	    diff: track!==true,
 	    deep: true
@@ -4691,7 +4691,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	    tag = ast.tag,
 	    Component = Constructor.component(tag),
 	    ref, group, element, mountNode;
-	    
+
 
 
 
@@ -4701,18 +4701,18 @@ return /******/ (function(modules) { // webpackBootstrap
 	  }
 
 
-	  // if inititalized with mount mode, sometime, 
+	  // if inititalized with mount mode, sometime,
 	  // browser will ignore the whitespace between node, and sometimes it won't
 	  if(cursor ){
 	    // textCOntent with Empty text
 	    if(cursor.node && cursor.node.nodeType === 3){
 	      if(_.blankReg.test(dom.text(cursor.node) ) ) cursor.next();
 	      else if( !Component && tag !== 'r-component' ) {
 	        throw Error(MSG[ERROR.UNMATCHED_AST]);
-	      } 
+	      }
 	    }
 	  }
-	  
+
 	  if(Component || tag === 'r-component'){
 	    options.Component = Component;
 	    return walkers.component.call(this, ast, options)
@@ -4816,7 +4816,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	    }
 
 
-	    // @deprecated  use 
+	    // @deprecated  use
 	    if(attr.mdf === 'cmpl'){
 	      value = _.getCompileFn(value, this, {
 	        record: true,
@@ -4833,7 +4833,7 @@ return /******/ (function(modules) { // webpackBootstrap
 	        namespace: namespace,
 	        extra: extra,
 	        outer: options.outer
-	      }) 
+	      })
 	    }
 
 	    // @if is r-component . we need to find the target Component
@@ -4911,7 +4911,10 @@ return /******/ (function(modules) { // webpackBootstrap
 	        }).bind(component, name), OPTIONS.SYNC)
 	      if( value.set && !(isolate & 1 ) )
 	        // sync the data. it force the component don't trigger attr.name's first dirty echeck
-	        component.$watch(name, self.$update.bind(self, value), OPTIONS.INIT);
+	        component.$watch(name, self.$update.bind(self, value), {
+	          init: true,
+	          last: this.data[ name ]
+	        });
 	    }
 	  }
 	  if(is && is.type === 'expression'  ){