From 25833c10ce0975a79cc93f81814f2637c1307cb6 Mon Sep 17 00:00:00 2001
From: ruibaby <i@ryanc.cc>
Date: Tue, 13 Nov 2018 16:59:22 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BB=A3=E7=A0=81=E4=BC=98=E5=8C=96?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 archives.ftl                |  2 +-
 category.ftl                |  4 ++--
 default.ftl                 |  4 ++--
 index.ftl                   | 10 +++++-----
 links.ftl                   |  2 +-
 module/comment.ftl          |  2 +-
 module/options.ftl          | 38 ++++++++++++++++++-------------------
 page.ftl                    |  2 +-
 page_author.ftl             |  8 ++++----
 partials/byline-single.ftl  |  8 ++++----
 partials/post-card.ftl      |  2 +-
 partials/post-copyright.ftl |  4 ++--
 partials/site-nav.ftl       |  6 +++---
 post.ftl                    |  4 ++--
 tag.ftl                     |  4 ++--
 15 files changed, 50 insertions(+), 50 deletions(-)

diff --git a/archives.ftl b/archives.ftl
index d169d42..a2487ac 100644
--- a/archives.ftl
+++ b/archives.ftl
@@ -1,5 +1,5 @@
 <#include "default.ftl">
-<@default title="文章归档 | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}/archives" body_class="page-template">
+<@default title="文章归档 | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}/archives" body_class="page-template">
 
 <#-- The tag above means: insert everything in this file
 into the {body} of the default.hbs template -->
diff --git a/category.ftl b/category.ftl
index 327be08..988df36 100644
--- a/category.ftl
+++ b/category.ftl
@@ -1,6 +1,6 @@
 <#include "default.ftl">
 <#include "partials/post-card.ftl">
-<@default title="分类：${category.cateName} | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}/categories/${category.cateName}" body_class="tag-template">
+<@default title="分类：${category.cateName!} | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}/categories/${category.cateName}" body_class="tag-template">
 <#-- The tag above means - insert everything in this file into the {body} of the default.hbs template -->
 <#-- The big featured header, it uses blog cover image as a BG if available -->
 <header class="site-header outer <#if options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')})<#else>no-cover</#if>">
@@ -9,7 +9,7 @@
         <div class="site-header-content">
             <h1 class="site-title">分类：${category.cateName}</h1>
             <h2 class="site-description">
-                <#if category.cateDesc?? && category.cateDesc?if_exists!=''>
+                <#if category.cateDesc?? && (category.cateDesc!'')!=''>
                     ${category.cateDesc}
                 <#else>
                     ${category.posts?size}篇文章
diff --git a/default.ftl b/default.ftl
index 6a3fbdb..28beca3 100644
--- a/default.ftl
+++ b/default.ftl
@@ -29,13 +29,13 @@
     <meta property="og:title" content="${title}" />
     <meta property="og:description" content="${desc}" />
     <meta property="og:url" content="${canonical}" />
-    <meta property="og:image" content="${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')}" />
+    <meta property="og:image" content="${options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg'}" />
     <meta property="article:publisher" content="https://www.facebook.com/ghost" />
     <meta name="twitter:card" content="summary_large_image" />
     <meta name="twitter:title" content="${title}" />
     <meta name="twitter:description" content="${desc}" />
     <meta name="twitter:url" content="${canonical}" />
-    <meta name="twitter:image" content="${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')}" />
+    <meta name="twitter:image" content="${options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg'}" />
     <meta name="twitter:site" content="@tryghost" />
     <meta property="og:image:width" content="2000" />
     <meta property="og:image:height" content="666" />
diff --git a/index.ftl b/index.ftl
index 7ee6701..72e0b52 100644
--- a/index.ftl
+++ b/index.ftl
@@ -1,21 +1,21 @@
 <#include "default.ftl">
 <#include "partials/post-card.ftl">
-<@default title="${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}" body_class="home-template">
+<@default title="${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}" body_class="home-template">
 <#-- The tag above means: insert everything in this file
 into the {body} of the default.hbs template -->
 
 <#-- The big featured header, it uses blog cover image as a BG if available -->
-<header class="site-header outer <#if options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')})<#else>no-cover</#if>">
+<header class="site-header outer <#if (options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg'})<#else>no-cover</#if>">
     <div class="inner">
         <div class="site-header-content">
             <h1 class="site-title">
                 <#if options.blog_logo??>
-                    <img class="site-logo" src="${options.blog_logo}" alt="${options.blog_title}" />
+                    <img class="site-logo" src="${options.blog_logo}" alt="${options.blog_title!}" />
                 <#else>
-                    ${options.blog_title}
+                    ${options.blog_title!}
                 </#if>
             </h1>
-            <h2 class="site-description">${user.userDesc?if_exists}</h2>
+            <h2 class="site-description">${user.userDesc!}</h2>
         </div>
         <#include "partials/site-nav.ftl">
     </div>
diff --git a/links.ftl b/links.ftl
index 3cf6456..1038ded 100644
--- a/links.ftl
+++ b/links.ftl
@@ -1,5 +1,5 @@
 <#include "default.ftl">
-<@default title="友情链接 | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}/links" body_class="page-template">
+<@default title="友情链接 | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}/links" body_class="page-template">
 
 <#-- The tag above means: insert everything in this file
 into the {body} of the default.hbs template -->
diff --git a/module/comment.ftl b/module/comment.ftl
index 7cf16a7..aae8377 100644
--- a/module/comment.ftl
+++ b/module/comment.ftl
@@ -1,4 +1,4 @@
-<#if post.allowComment?default(1)==1>
+<#if (post.allowComment!1)==1>
     <#include "/common/comment/_native_comment.ftl">
 </#if>
 
diff --git a/module/options.ftl b/module/options.ftl
index 0c0beda..6f45fbd 100644
--- a/module/options.ftl
+++ b/module/options.ftl
@@ -27,7 +27,7 @@
                                     <label for="casperGeneralCover" class="col-sm-4 control-label">首页背景图：</label>
                                     <div class="col-sm-8">
                                         <div class="input-group">
-                                            <input type="text" class="form-control" id="casperGeneralCover" name="casper_general_cover" value="${options.casper_general_cover?default('/casper/assets/images/blog-cover.jpg')}" >
+                                            <input type="text" class="form-control" id="casperGeneralCover" name="casper_general_cover" value="${options.casper_general_cover!'/casper/assets/images/blog-cover.jpg'}" >
                                             <span class="input-group-btn">
                                                 <button class="btn btn-default btn-flat" type="button" onclick="openAttach('casperGeneralCover')">选择</button>
                                             </span>
@@ -38,7 +38,7 @@
                                     <label for="casperGeneralLinksCover" class="col-sm-4 control-label">友情链接背景图：</label>
                                     <div class="col-sm-8">
                                         <div class="input-group">
-                                            <input type="text" class="form-control" id="casperGeneralLinksCover" name="casper_general_links_cover" value="${options.casper_general_links_cover?if_exists}" >
+                                            <input type="text" class="form-control" id="casperGeneralLinksCover" name="casper_general_links_cover" value="${options.casper_general_links_cover!}" >
                                             <span class="input-group-btn">
                                                 <button class="btn btn-default btn-flat" type="button" onclick="openAttach('casperGeneralLinksCover')">选择</button>
                                             </span>
@@ -49,7 +49,7 @@
                                     <label for="casperGeneralArchivesCover" class="col-sm-4 control-label">归档背景图：</label>
                                     <div class="col-sm-8">
                                         <div class="input-group">
-                                            <input type="text" class="form-control" id="casperGeneralArchivesCover" name="casper_general_archives_cover" value="${options.casper_general_archives_cover?if_exists}" >
+                                            <input type="text" class="form-control" id="casperGeneralArchivesCover" name="casper_general_archives_cover" value="${options.casper_general_archives_cover!}" >
                                             <span class="input-group-btn">
                                                 <button class="btn btn-default btn-flat" type="button" onclick="openAttach('casperGeneralArchivesCover')">选择</button>
                                             </span>
@@ -60,17 +60,17 @@
                                     <label for="casperGeneralPostCopyright" class="col-sm-4 control-label">文章版权：</label>
                                     <div class="col-sm-8">
                                         <label class="radio-inline">
-                                            <input type="radio" name="casper_general_post_copyright" id="casperGeneralPostCopyright" value="true" ${((options.casper_general_post_copyright?default('true'))=='true')?string('checked','')}> 显示
+                                            <input type="radio" name="casper_general_post_copyright" id="casperGeneralPostCopyright" value="true" ${((options.casper_general_post_copyright!'true')=='true')?string('checked','')}> 显示
                                         </label>
                                         <label class="radio-inline">
-                                            <input type="radio" name="casper_general_post_copyright" id="casperGeneralPostCopyright" value="false" ${((options.casper_general_post_copyright?if_exists)=='false')?string('checked','')}> 隐藏
+                                            <input type="radio" name="casper_general_post_copyright" id="casperGeneralPostCopyright" value="false" ${((options.casper_general_post_copyright!)=='false')?string('checked','')}> 隐藏
                                         </label>
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperGeneralLocation" class="col-sm-4 control-label">所在地：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperGeneralLocation" name="casper_general_location" value="${options.casper_general_location?if_exists}" >
+                                        <input type="text" class="form-control" id="casperGeneralLocation" name="casper_general_location" value="${options.casper_general_location!}" >
                                     </div>
                                 </div>
                             </div>
@@ -87,77 +87,77 @@
                                     <label for="casperSnsRss" class="col-sm-4 control-label">RSS：</label>
                                     <div class="col-sm-8">
                                         <label class="radio-inline">
-                                            <input type="radio" name="casper_sns_rss" id="casperSnsRss" value="true" ${((options.casper_sns_rss?default('true'))=='true')?string('checked','')}> 显示
+                                            <input type="radio" name="casper_sns_rss" id="casperSnsRss" value="true" ${((options.casper_sns_rss!'true')=='true')?string('checked','')}> 显示
                                         </label>
                                         <label class="radio-inline">
-                                            <input type="radio" name="casper_sns_rss" id="casperSnsRss" value="false" ${((options.casper_sns_rss?if_exists)=='false')?string('checked','')}> 隐藏
+                                            <input type="radio" name="casper_sns_rss" id="casperSnsRss" value="false" ${((options.casper_sns_rss!)=='false')?string('checked','')}> 隐藏
                                         </label>
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsTwitter" class="col-sm-4 control-label">Twitter：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsTwitter" name="casper_sns_twitter" value="${options.casper_sns_twitter?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsTwitter" name="casper_sns_twitter" value="${options.casper_sns_twitter!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsFacebook" class="col-sm-4 control-label">Facebook：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsFacebook" name="casper_sns_facebook" value="${options.casper_sns_facebook?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsFacebook" name="casper_sns_facebook" value="${options.casper_sns_facebook!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsInstagram" class="col-sm-4 control-label">Instagram：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsInstagram" name="casper_sns_instagram" value="${options.casper_sns_instagram?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsInstagram" name="casper_sns_instagram" value="${options.casper_sns_instagram!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsDribbble" class="col-sm-4 control-label">Dribbble：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsDribbble" name="casper_sns_dribbble" value="${options.casper_sns_dribbble?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsDribbble" name="casper_sns_dribbble" value="${options.casper_sns_dribbble!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsWeibo" class="col-sm-4 control-label">Weibo：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsWeibo" name="casper_sns_weibo" value="${options.casper_sns_weibo?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsWeibo" name="casper_sns_weibo" value="${options.casper_sns_weibo!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsEmail" class="col-sm-4 control-label">Email：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsEmail" name="casper_sns_email" value="${options.casper_sns_email?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsEmail" name="casper_sns_email" value="${options.casper_sns_email!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsGithub" class="col-sm-4 control-label">Github：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsGithub" name="casper_sns_github" value="${options.casper_sns_github?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsGithub" name="casper_sns_github" value="${options.casper_sns_github!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsQQ" class="col-sm-4 control-label">QQ：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsQQ" name="casper_sns_qq" value="${options.casper_sns_qq?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsQQ" name="casper_sns_qq" value="${options.casper_sns_qq!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsTelegram" class="col-sm-4 control-label">Telegram：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsTelegram" name="casper_sns_telegram" value="${options.casper_sns_telegram?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsTelegram" name="casper_sns_telegram" value="${options.casper_sns_telegram!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsCnBLog" class="col-sm-4 control-label">博客园：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsCnBLog" name="casper_sns_cnblog" value="${options.casper_sns_cnblog?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsCnBLog" name="casper_sns_cnblog" value="${options.casper_sns_cnblog!}" >
                                     </div>
                                 </div>
                                 <div class="form-group">
                                     <label for="casperSnsStackoverflow" class="col-sm-4 control-label">Stack Overflow：</label>
                                     <div class="col-sm-8">
-                                        <input type="text" class="form-control" id="casperSnsStackoverflow" name="casper_sns_stackoverflow" value="${options.casper_sns_stackoverflow?if_exists}" >
+                                        <input type="text" class="form-control" id="casperSnsStackoverflow" name="casper_sns_stackoverflow" value="${options.casper_sns_stackoverflow!}" >
                                     </div>
                                 </div>
                             </div>
diff --git a/page.ftl b/page.ftl
index 07e71e8..12bcf8d 100644
--- a/page.ftl
+++ b/page.ftl
@@ -1,5 +1,5 @@
 <#include "default.ftl">
-<@default title="${post.postTitle} | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${post.postSummary?if_exists}" canonical="${options.blog_url}/p/${post.postUrl}" body_class="page-template">
+<@default title="${post.postTitle} | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${post.postSummary!}" canonical="${options.blog_url}/p/${post.postUrl}" body_class="page-template">
 
 <#-- The tag above means: insert everything in this file
 into the {body} of the default.hbs template -->
diff --git a/page_author.ftl b/page_author.ftl
index 7616522..398d645 100644
--- a/page_author.ftl
+++ b/page_author.ftl
@@ -1,15 +1,15 @@
 <#include "default.ftl">
-<@default title="${post.postTitle?if_exists} | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}/p/${post.postUrl?if_exists}" body_class="page-template">
+<@default title="${post.postTitle!} | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}/p/${post.postUrl!}" body_class="page-template">
 <#-- The tag above means - insert everything in this file into the {body} of the default.hbs template -->
 <#-- Everything inside the #author tags pulls data from the author -->
 <header class="site-header outer <#if options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')})<#else>no-cover</#if>">
     <div class="inner">
         <#include "partials/site-nav.ftl">
         <div class="site-header-content">
-            <img class="author-profile-image" src="${user.userAvatar?if_exists}" alt="${user.userDisplayName?if_exists}" />
-            <h1 class="site-title">${user.userDisplayName?if_exists}</h1>
+            <img class="author-profile-image" src="${user.userAvatar!}" alt="${user.userDisplayName!}" />
+            <h1 class="site-title">${user.userDisplayName!}</h1>
             <#if user.userDesc??>
-                <h2 class="author-bio">${user.userDesc?if_exists}</h2>
+                <h2 class="author-bio">${user.userDesc!}</h2>
             </#if>
             <div class="author-meta">
             <#if options.casper_general_location??>
diff --git a/partials/byline-single.ftl b/partials/byline-single.ftl
index 76143c7..10ade27 100644
--- a/partials/byline-single.ftl
+++ b/partials/byline-single.ftl
@@ -2,22 +2,22 @@
 
 <section class="author-card">
     <#if user.userAvatar??>
-        <img class="author-profile-image" src="${user.userAvatar}" alt="${user.userDisplayName}" />
+        <img class="author-profile-image" src="${user.userAvatar!}" alt="${user.userDisplayName!}" />
     <#else >
         <span class="avatar-wrapper">
             <#include "icons/avatar.ftl">
         </span>
     </#if>
     <section class="author-card-content">
-        <h4 class="author-card-name"><a href="${options.blog_url}">${user.userDisplayName}</a></h4>
+        <h4 class="author-card-name"><a href="${options.blog_url!}">${user.userDisplayName!}</a></h4>
         <#if user.userDesc??>
             <p>${user.userDesc}</p>
         <#else>
-            <p>Read <a href="${options.blog_url}">more posts</a> by this author.</p>
+            <p>Read <a href="${options.blog_url!}">more posts</a> by this author.</p>
         </#if>
     </section>
 </section>
 <div class="post-full-footer-right">
-    <a class="author-card-button" href="${options.blog_url}">Read More</a>
+    <a class="author-card-button" href="${options.blog_url!}">Read More</a>
 </div>
 
diff --git a/partials/post-card.ftl b/partials/post-card.ftl
index f5a7ed0..b18393d 100644
--- a/partials/post-card.ftl
+++ b/partials/post-card.ftl
@@ -14,7 +14,7 @@
                 <h2 class="post-card-title">${post.postTitle}</h2>
             </header>
             <section class="post-card-excerpt">
-                <p>${post.postSummary?if_exists}</p>
+                <p>${post.postSummary!}</p>
             </section>
         </a>
         <footer class="post-card-meta">
diff --git a/partials/post-copyright.ftl b/partials/post-copyright.ftl
index 07cbd9c..e323f31 100644
--- a/partials/post-copyright.ftl
+++ b/partials/post-copyright.ftl
@@ -4,7 +4,7 @@
     <ul class="post-copyright" style="margin: 0">
         <li class="post-copyright-author" style="margin: 0">
             <strong>本文作者：</strong>
-            ${user.userDisplayName?if_exists}
+            ${user.userDisplayName!}
         </li>
         <li class="post-copyright-link" style="margin: 0">
             <strong>本文链接：</strong>
@@ -12,7 +12,7 @@
         </li>
         <li class="post-copyright-license" style="margin: 0">
             <strong>版权声明：</strong>
-            本博客所有文章除特别声明外，均采用<a href="${options.next_other_post_copyright_license_url?default('https://creativecommons.org/licenses/by-nc-sa/3.0/')}" rel="external nofollow" target="_blank">${options.next_other_post_copyright_license?default('CC BY-NC-SA 3.0')}</a> 许可协议。转载请注明出处！
+            本博客所有文章除特别声明外，均采用<a href="${options.next_other_post_copyright_license_url!'https://creativecommons.org/licenses/by-nc-sa/3.0/'}" rel="external nofollow" target="_blank">${options.next_other_post_copyright_license?default('CC BY-NC-SA 3.0')}</a> 许可协议。转载请注明出处！
         </li>
     </ul>
 </blockquote>
diff --git a/partials/site-nav.ftl b/partials/site-nav.ftl
index 93683ac..2f8e52f 100644
--- a/partials/site-nav.ftl
+++ b/partials/site-nav.ftl
@@ -2,9 +2,9 @@
     <div class="site-nav-left">
         <#if !is_index??>
             <#if options.blog_logo??>
-                <a class="site-nav-logo" href="${options.blog_url}"><img src="${options.blog_logo}" alt="${options.blog_title}" /></a>
+                <a class="site-nav-logo" href="${options.blog_url!}"><img src="${options.blog_logo!}" alt="${options.blog_title!}" /></a>
             <#else>
-                <a class="site-nav-logo" href="${options.blog_url}">${options.blog_title}</a>
+                <a class="site-nav-logo" href="${options.blog_url!}">${options.blog_title!}</a>
             </#if>
         </#if>
         <@commonTag method="menus">
@@ -84,7 +84,7 @@
                 </a>
             </#if>
         </div>
-        <#if options.casper_sns_rss?default('true')=='true'>
+        <#if (options.casper_sns_rss!'true')=='true'>
         <a class="rss-button" href="/feed.xml" target="_blank" rel="noopener">
             <#include "../partials/icons/rss.ftl">
         </a>
diff --git a/post.ftl b/post.ftl
index 76c9bc7..74b0d3d 100644
--- a/post.ftl
+++ b/post.ftl
@@ -1,7 +1,7 @@
 <#include "default.ftl">
 <#include "partials/post-card.ftl">
 <#include "partials/floating-header.ftl">
-<@default title="${post.postTitle} | ${options.blog_title}" keyword="${options.seo_keywords?if_exists},${tagWords}" desc="${post.postSummary?if_exists}" canonical="${options.blog_url}/archives/${post.postUrl}" body_class="post-template">
+<@default title="${post.postTitle} | ${options.blog_title!}" keyword="${options.seo_keywords!},${tagWords}" desc="${post.postSummary!}" canonical="${options.blog_url}/archives/${post.postUrl}" body_class="post-template">
 
 <#-- The tag above means: insert everything in this file
 into the {body} of the default.hbs template -->
@@ -36,7 +36,7 @@ into the {body} of the default.hbs template -->
 
             <section class="post-full-content">
                 <div class="post-content">
-                    ${post.postContent?if_exists}
+                    ${post.postContent!}
                     <#include "partials/post-copyright.ftl">
                 </div>
             </section>
diff --git a/tag.ftl b/tag.ftl
index fc1d1d3..bf1363f 100644
--- a/tag.ftl
+++ b/tag.ftl
@@ -1,9 +1,9 @@
 <#include "default.ftl">
 <#include "partials/post-card.ftl">
-<@default title="标签：${tag.tagName} | ${options.blog_title}" keyword="${options.seo_keywords?if_exists}" desc="${options.seo_desc?if_exists}" canonical="${options.blog_url}/tags/${tag.tagName}" body_class="tag-template">
+<@default title="标签：${tag.tagName} | ${options.blog_title!}" keyword="${options.seo_keywords!}" desc="${options.seo_desc!}" canonical="${options.blog_url}/tags/${tag.tagName}" body_class="tag-template">
 <#-- The tag above means - insert everything in this file into the {body} of the default.hbs template -->
 <#-- The big featured header, it uses blog cover image as a BG if available -->
-<header class="site-header outer <#if options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover?default('/${themeName}/assets/images/blog-cover.jpg')})<#else>no-cover</#if>">
+<header class="site-header outer <#if (options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg') != ''>" style="background-image: url(${options.casper_general_cover!'/${themeName}/assets/images/blog-cover.jpg'})<#else>no-cover</#if>">
     <div class="inner">
         <#include "partials/site-nav.ftl">
         <div class="site-header-content">