fix(vuejs#2725): remove duplicated decodeURIComponent

Author: mestevezdeister

examples/basic/app.js

@@ -75,7 +75,7 @@ const vueInstance = new Vue({
           </li>
         </router-link>
         <li><router-link to="/foo" replace>/foo (replace)</router-link></li>
-        <li><router-link to="/query/A%">/query/A%</router-link></li>
+        <li><router-link to="/query/A%25">/query/A%</router-link></li>
       </ul>
       <button id="navigate-btn" @click="navigateAndIncrement">On Success</button>
       <pre id="counter">{{ n }}</pre>

examples/hash-mode/app.js

@@ -68,7 +68,7 @@ const vueInstance = new Vue({
         <li><router-link to="/é/ñ">/é/ñ</router-link></li>
         <li><router-link to="/é/ñ?t=%25ñ">/é/ñ?t=%ñ</router-link></li>
         <li><router-link to="/é/ñ#é">/é/ñ#é</router-link></li>
-        <li><router-link to="/query/A%">/query/A%</router-link></li>  
+        <li><router-link to="/query/A%25">/query/A%</router-link></li>  
       </ul>
       <pre id="query-t">{{ $route.query.t }}</pre>
       <pre id="hash">{{ $route.hash }}</pre>

src/create-matcher.js

@@ -175,7 +175,7 @@ function matchRoute (
   path: string,
   params: Object
 ): boolean {
-  const m = path.match(regex)
+  const m = decodeURI(path).match(regex)
 
   if (!m) {
     return false

src/history/hash.js

@@ -124,18 +124,6 @@ export function getHash (): string {
   if (index < 0) return ''
 
   href = href.slice(index + 1)
-  // decode the hash but not the search or hash
-  // as search(query) is already decoded
-  // https://github.com/vuejs/vue-router/issues/2708
-  const searchIndex = href.indexOf('?')
-  if (searchIndex < 0) {
-    const hashIndex = href.indexOf('#')
-    if (hashIndex > -1) {
-      href = decodeURI(href.slice(0, hashIndex)) + href.slice(hashIndex)
-    } else href = decodeURI(href)
-  } else {
-    href = decodeURI(href.slice(0, searchIndex)) + href.slice(searchIndex)
-  }
 
   return href
 }

src/history/html5.js

@@ -86,7 +86,7 @@ export class HTML5History extends History {
 }
 
 export function getLocation (base: string): string {
-  let path = decodeURI(window.location.pathname)
+  let path = window.location.pathname
   if (base && path.toLowerCase().indexOf(base.toLowerCase()) === 0) {
     path = path.slice(base.length)
   }