diff --git a/_includes/refactor-content.html b/_includes/refactor-content.html
index d691445..80844b9 100644
--- a/_includes/refactor-content.html
+++ b/_includes/refactor-content.html
@@ -8,6 +8,7 @@
   In order to allow a wide table to scroll horizontally,
   we suround the markdown table with `<div class="table-wrapper">` and `</div>`
 -->
+
 {% if _content contains '<table>' %}
   {% assign _content = _content
     | replace: '<table>', '<div class="table-wrapper"><table>'
@@ -21,6 +22,7 @@
   https://github.com/penibelst/jekyll-compress-html/issues/101
   https://github.com/penibelst/jekyll-compress-html/issues/71#issuecomment-188144901
 -->
+
 {% if _content contains '<pre class="highlight">' %}
   {% assign _content = _content
     | replace: '<div class="highlight"><pre class="highlight"><code', '<div class="highlight"><code'
@@ -29,6 +31,7 @@
 {% endif %}
 
 <!-- Add attribute 'hide-bullet' to the checkbox list -->
+
 {% if _content contains '<li class="task-list-item"><' %}
   {% assign _content = _content
     | replace: '"task-list-item"><', '"task-list-item" hide-bullet><'
@@ -36,9 +39,12 @@
 {% endif %}
 
 
+<!-- images -->
+
 {% if _content contains '<img src="' %}
 
   <!-- add CDN prefix if it exists -->
+
   {% if site.img_cdn != '' %}
     {% assign img_path_replacement = '<img src="' | append: site.img_cdn | append: '/' %}
   {% else %}
@@ -48,6 +54,7 @@
   {% assign _content = _content | replace: '<img src="/', img_path_replacement %}
 
   <!-- lazy-load images <https://github.com/ApoorvSaxena/lozad.js#usage> -->
+
   {% assign _content = _content | replace: '<img src="', '<img data-proofer-ignore data-src="' %}
 
   <!-- add image placehoder to prevent layout reflow -->
@@ -95,6 +102,29 @@
 
 {% endif %}
 
+<!-- Add lang-badge for code snippets -->
+
+{% if _content contains '<div class="language-' %}
+  {% assign _code_splits = _content | split: '<div class="language-' %}
+  {% assign _new_content = nil %}
+
+  {% for _snippet in _code_splits %}
+    {% if forloop.first %}
+      {% assign _new_content = _snippet %}
+    {% else %}
+      {% assign _lang = _snippet | split: ' ' | first %}
+      {% capture _tag_head %}<div lang="{{_lang}}" class="language-{% endcapture %}
+      {% assign _new_content = _new_content | append: _tag_head | append: _snippet %}
+    {% endif %}
+  {% endfor %}
+
+  {% if _new_content %}
+    {% assign _content = _new_content %}
+  {% endif %}
+
+{% endif %}
+
 
 <!-- return -->
+
 {{ _content }}
diff --git a/_javascript/utils/img-extra.js b/_javascript/utils/img-extra.js
index 91e7324..356f326 100644
--- a/_javascript/utils/img-extra.js
+++ b/_javascript/utils/img-extra.js
@@ -25,7 +25,7 @@ $(function() {
       const title = nextTag.prop('tagName') === 'EM' ? nextTag.text() : '';
       const src = $(this).attr('data-src'); // created by lozad.js
 
-      $(this).wrap(`<a href="${src}" title="${title}" class="popup"></a>`);
+      $(this).wrap(`<a href="${src}" title="${title}" class="popup img-link"></a>`);
     }
   );
 
@@ -42,6 +42,4 @@ $(function() {
 
   /* markup the image links */
 
-  $(`${IMG_SCOPE} a`).has("img").addClass('img-link');
-
 });
diff --git a/_javascript/utils/lang-badge.js b/_javascript/utils/lang-badge.js
deleted file mode 100644
index bad815d..0000000
--- a/_javascript/utils/lang-badge.js
+++ /dev/null
@@ -1,20 +0,0 @@
-/**
- *  Add language indicator to code snippets
- */
-
-$(function() {
-  const prefix = "language-";
-  const regex = new RegExp(`^${prefix}([a-z])+$`);
-
-  $(`div[class^=${prefix}`).each(function() {
-    let classes = $(this).attr("class").split(" ");
-
-    classes.forEach((_class) => {
-      if (regex.test(_class)) {
-        let lang = _class.substring(prefix.length);
-        $(this).attr("lang", `${lang}`);
-      }
-    });
-
-  });
-});
diff --git a/assets/js/dist/page.min.js b/assets/js/dist/page.min.js
index ada9b8f..b0ddcb8 100644
--- a/assets/js/dist/page.min.js
+++ b/assets/js/dist/page.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-function copyLink(e){e&&0!==e.length||(e=window.location.href);const o=$("<input>");$("body").append(o),o.val(e).select(),document.execCommand("copy"),o.remove(),alert("Link copied successfully!")}$(function(){$(window).scroll(()=>{$(this).scrollTop()>50&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){const e=$("#sidebar-trigger"),o=$("#search-trigger"),t=$("#search-cancel"),s=$("#search-cleaner"),a=$("#main"),l=$("#topbar-title"),n=$("#search-wrapper"),i=$("#search-result-wrapper"),c=$("#search-results"),d=$("#search-input"),r=$("#search-hints"),u=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset:()=>e}}(),p={on(){e.addClass("unloaded"),l.addClass("unloaded"),o.addClass("unloaded"),n.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),l.removeClass("unloaded"),o.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(u.block(),i.removeClass("unloaded"),a.addClass("unloaded"),e=!0)},off(){e&&(c.empty(),r.hasClass("unloaded")&&r.removeClass("unloaded"),i.addClass("unloaded"),s.removeClass("visible"),a.removeClass("unloaded"),u.release(),d.val(""),e=!1)},isVisible:()=>e}}();function h(){return t.hasClass("loaded")}o.click(function(){p.on(),f.on(),d.focus()}),t.click(function(){p.off(),f.off()}),d.focus(function(){n.addClass("input-focus")}),d.focusout(function(){n.removeClass("input-focus")}),d.on("keyup",function(e){8===e.keyCode&&""===d.val()?h()?r.removeClass("unloaded"):f.off():""!==d.val()&&(f.on(),s.hasClass("visible")||s.addClass("visible"),h()&&r.addClass("unloaded"))}),s.on("click",function(){d.val(""),h()?(r.removeClass("unloaded"),c.empty()):f.off(),d.focus(),s.removeClass("visible")})}),$(function(){const e=function(){let e=!1;const o=$("body");return{toggle(){!1===e?o.attr("sidebar-display",""):o.removeAttr("sidebar-display"),e=!e}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const e=$("#topbar-wrapper"),o=$("#toc-wrapper"),t=$(".access"),s=$("#search-input");let a,l=0;const n=5,i=e.outerHeight();$(window).scroll(function(e){$("#topbar-title").is(":hidden")&&(a=!0)}),setInterval(function(){a&&(!function(){var a=$(this).scrollTop();Math.abs(l-a)<=n||(a>l&&a>i?(e.removeClass("topbar-down").addClass("topbar-up"),o.length>0&&o.removeClass("topbar-down"),t.length>0&&t.removeClass("topbar-down"),s.is(":focus")&&s.blur()):a+$(window).height()<$(document).height()&&(e.removeClass("topbar-up").addClass("topbar-down"),o.length>0&&o.addClass("topbar-down"),t.length>0&&t.addClass("topbar-down")),l=a)}(),a=!1)},250)}),$(function(){const e=$("#topbar-title"),o=$("div.post>h1"),t=e.text().trim();let s=o.length>0?o.text().trim():$("h1").text().trim();($("#page-category").length||$("#page-tag").length)&&/\s/.test(s)&&(s=s.replace(/[0-9]/g,"").trim()),$(window).scroll(function(){if($("#post-list").length||o.is(":hidden")||e.is(":hidden")||$("#sidebar.sidebar-expand").length)return!1;$(this).scrollTop()>=95?e.text()!==s&&e.text(s):e.text()!==t&&e.text(t)}),e.click(function(){$("body,html").animate({scrollTop:0},800)})}),$(function(){$("input[type=checkbox]").addClass("unloaded"),$("input[type=checkbox][checked]").before('<i class="fas fa-check-circle checked"></i>'),$("input[type=checkbox]:not([checked])").before('<i class="far fa-circle"></i>')}),$(function(){const e="#main > div.row:first-child > div:first-child";if($(`${e} img`).length<=0)return;const o=document.querySelectorAll(`${e} img[data-src]`);lozad(o).observe(),$(`${e} p > img[data-src],${e} img[data-src].preview-img`).each(function(){let e=$(this).next();const o="EM"===e.prop("tagName")?e.text():"",t=$(this).attr("data-src");$(this).wrap(`<a href="${t}" title="${o}" class="popup"></a>`)}),$(".popup").magnificPopup({type:"image",closeOnContentClick:!0,showCloseBtn:!1,zoom:{enabled:!0,duration:300,easing:"ease-in-out"}}),$(`${e} a`).has("img").addClass("img-link")});
\ No newline at end of file
+function copyLink(e){e&&0!==e.length||(e=window.location.href);const o=$("<input>");$("body").append(o),o.val(e).select(),document.execCommand("copy"),o.remove(),alert("Link copied successfully!")}$(function(){$(window).scroll(()=>{$(this).scrollTop()>50&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){const e=$("#sidebar-trigger"),o=$("#search-trigger"),t=$("#search-cancel"),s=$("#search-cleaner"),a=$("#main"),l=$("#topbar-title"),n=$("#search-wrapper"),i=$("#search-result-wrapper"),c=$("#search-results"),d=$("#search-input"),r=$("#search-hints"),u=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset:()=>e}}(),p={on(){e.addClass("unloaded"),l.addClass("unloaded"),o.addClass("unloaded"),n.addClass("d-flex"),t.addClass("loaded")},off(){t.removeClass("loaded"),n.removeClass("d-flex"),e.removeClass("unloaded"),l.removeClass("unloaded"),o.removeClass("unloaded")}},f=function(){let e=!1;return{on(){e||(u.block(),i.removeClass("unloaded"),a.addClass("unloaded"),e=!0)},off(){e&&(c.empty(),r.hasClass("unloaded")&&r.removeClass("unloaded"),i.addClass("unloaded"),s.removeClass("visible"),a.removeClass("unloaded"),u.release(),d.val(""),e=!1)},isVisible:()=>e}}();function h(){return t.hasClass("loaded")}o.click(function(){p.on(),f.on(),d.focus()}),t.click(function(){p.off(),f.off()}),d.focus(function(){n.addClass("input-focus")}),d.focusout(function(){n.removeClass("input-focus")}),d.on("keyup",function(e){8===e.keyCode&&""===d.val()?h()?r.removeClass("unloaded"):f.off():""!==d.val()&&(f.on(),s.hasClass("visible")||s.addClass("visible"),h()&&r.addClass("unloaded"))}),s.on("click",function(){d.val(""),h()?(r.removeClass("unloaded"),c.empty()):f.off(),d.focus(),s.removeClass("visible")})}),$(function(){const e=function(){let e=!1;const o=$("body");return{toggle(){!1===e?o.attr("sidebar-display",""):o.removeAttr("sidebar-display"),e=!e}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const e=$("#topbar-wrapper"),o=$("#toc-wrapper"),t=$(".access"),s=$("#search-input");let a,l=0;const n=5,i=e.outerHeight();$(window).scroll(function(e){$("#topbar-title").is(":hidden")&&(a=!0)}),setInterval(function(){a&&(!function(){var a=$(this).scrollTop();Math.abs(l-a)<=n||(a>l&&a>i?(e.removeClass("topbar-down").addClass("topbar-up"),o.length>0&&o.removeClass("topbar-down"),t.length>0&&t.removeClass("topbar-down"),s.is(":focus")&&s.blur()):a+$(window).height()<$(document).height()&&(e.removeClass("topbar-up").addClass("topbar-down"),o.length>0&&o.addClass("topbar-down"),t.length>0&&t.addClass("topbar-down")),l=a)}(),a=!1)},250)}),$(function(){const e=$("#topbar-title"),o=$("div.post>h1"),t=e.text().trim();let s=o.length>0?o.text().trim():$("h1").text().trim();($("#page-category").length||$("#page-tag").length)&&/\s/.test(s)&&(s=s.replace(/[0-9]/g,"").trim()),$(window).scroll(function(){if($("#post-list").length||o.is(":hidden")||e.is(":hidden")||$("#sidebar.sidebar-expand").length)return!1;$(this).scrollTop()>=95?e.text()!==s&&e.text(s):e.text()!==t&&e.text(t)}),e.click(function(){$("body,html").animate({scrollTop:0},800)})}),$(function(){$("input[type=checkbox]").addClass("unloaded"),$("input[type=checkbox][checked]").before('<i class="fas fa-check-circle checked"></i>'),$("input[type=checkbox]:not([checked])").before('<i class="far fa-circle"></i>')}),$(function(){const e="#main > div.row:first-child > div:first-child";if($(`${e} img`).length<=0)return;const o=document.querySelectorAll(`${e} img[data-src]`);lozad(o).observe(),$(`${e} p > img[data-src],${e} img[data-src].preview-img`).each(function(){let e=$(this).next();const o="EM"===e.prop("tagName")?e.text():"",t=$(this).attr("data-src");$(this).wrap(`<a href="${t}" title="${o}" class="popup img-link"></a>`)}),$(".popup").magnificPopup({type:"image",closeOnContentClick:!0,showCloseBtn:!1,zoom:{enabled:!0,duration:300,easing:"ease-in-out"}})});
\ No newline at end of file
diff --git a/assets/js/dist/post.min.js b/assets/js/dist/post.min.js
index a69a3af..eb0e0cb 100644
--- a/assets/js/dist/post.min.js
+++ b/assets/js/dist/post.min.js
@@ -3,4 +3,4 @@
  * © 2019 Cotes Chung
  * MIT Licensed
  */
-function copyLink(t){t&&0!==t.length||(t=window.location.href);const e=$("<input>");$("body").append(e),e.val(t).select(),document.execCommand("copy"),e.remove(),alert("Link copied successfully!")}$(function(){$(window).scroll(()=>{$(this).scrollTop()>50&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){const t=$("#sidebar-trigger"),e=$("#search-trigger"),o=$("#search-cancel"),a=$("#search-cleaner"),s=$("#main"),n=$("#topbar-title"),l=$("#search-wrapper"),i=$("#search-result-wrapper"),r=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),u=function(){let t=0;return{block(){t=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(t)},getOffset:()=>t}}(),h={on(){t.addClass("unloaded"),n.addClass("unloaded"),e.addClass("unloaded"),l.addClass("d-flex"),o.addClass("loaded")},off(){o.removeClass("loaded"),l.removeClass("d-flex"),t.removeClass("unloaded"),n.removeClass("unloaded"),e.removeClass("unloaded")}},f=function(){let t=!1;return{on(){t||(u.block(),i.removeClass("unloaded"),s.addClass("unloaded"),t=!0)},off(){t&&(r.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),i.addClass("unloaded"),a.removeClass("visible"),s.removeClass("unloaded"),u.release(),c.val(""),t=!1)},isVisible:()=>t}}();function p(){return o.hasClass("loaded")}e.click(function(){h.on(),f.on(),c.focus()}),o.click(function(){h.off(),f.off()}),c.focus(function(){l.addClass("input-focus")}),c.focusout(function(){l.removeClass("input-focus")}),c.on("keyup",function(t){8===t.keyCode&&""===c.val()?p()?d.removeClass("unloaded"):f.off():""!==c.val()&&(f.on(),a.hasClass("visible")||a.addClass("visible"),p()&&d.addClass("unloaded"))}),a.on("click",function(){c.val(""),p()?(d.removeClass("unloaded"),r.empty()):f.off(),c.focus(),a.removeClass("visible")})}),$(function(){const t=function(){let t=!1;const e=$("body");return{toggle(){!1===t?e.attr("sidebar-display",""):e.removeAttr("sidebar-display"),t=!t}}}();$("#sidebar-trigger").click(t.toggle),$("#mask").click(t.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const t=$("#topbar-wrapper"),e=$("#toc-wrapper"),o=$(".access"),a=$("#search-input");let s,n=0;const l=5,i=t.outerHeight();$(window).scroll(function(t){$("#topbar-title").is(":hidden")&&(s=!0)}),setInterval(function(){s&&(!function(){var s=$(this).scrollTop();Math.abs(n-s)<=l||(s>n&&s>i?(t.removeClass("topbar-down").addClass("topbar-up"),e.length>0&&e.removeClass("topbar-down"),o.length>0&&o.removeClass("topbar-down"),a.is(":focus")&&a.blur()):s+$(window).height()<$(document).height()&&(t.removeClass("topbar-up").addClass("topbar-down"),e.length>0&&e.addClass("topbar-down"),o.length>0&&o.addClass("topbar-down")),n=s)}(),s=!1)},250)}),$(function(){const t=$("#topbar-title"),e=$("div.post>h1"),o=t.text().trim();let 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a`).has("img").addClass("img-link")}),$(function(){let t=$(".timeago").length,e=void 0;function o(){return $(".timeago").each(function(){if($(this).children("i").length>0){let e=$(this).children("i"),o=e.text();$(this).text(function(e,o){let a=new Date,s=new Date(e),n=void 0!==o?`${o} `:"";if(s.getFullYear()!==a.getFullYear())return t-=1,n+s.toLocaleString("en-US",{year:"numeric",month:"short",day:"numeric"});if(s.getMonth()!==a.getMonth())return t-=1,n+s.toLocaleString("en-US",{month:"short",day:"numeric"});let l=Math.floor((a-s)/1e3),i=Math.floor(l/86400);if(i>=1)return t-=1,i+" day"+(i>1?"s":"")+" ago";let r=Math.floor(l/3600);if(r>=1)return r+" hour"+(r>1?"s":"")+" ago";let c=Math.floor(l/60);return c>=1?c+" minute"+(c>1?"s":"")+" ago":"just now"}(o,$(this).attr("prep"))),$(this).append(e)}}),0===t&&void 0!==e&&clearInterval(e),t}0!==t&&o()>0&&(e=setInterval(o,6e4))}),$(function(){const t=new 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r=i<n,c=$("#topbar-wrapper").outerHeight();r&&a&&(i-=c+e/2),$("html,body").animate({scrollTop:i},800,()=>{const t=$(l);t.focus();if($("[scroll-focus=true]").length&&$("[scroll-focus=true]").attr("scroll-focus",!1),$(":target").length&&$(":target").attr("scroll-focus",!1),(s||a)&&t.attr("scroll-focus",!0),t.is(":focus"))return!1;t.attr("tabindex","-1"),t.focus()})}}})});
\ No newline at end of file
+function copyLink(e){e&&0!==e.length||(e=window.location.href);const t=$("<input>");$("body").append(t),t.val(e).select(),document.execCommand("copy"),t.remove(),alert("Link copied successfully!")}$(function(){$(window).scroll(()=>{$(this).scrollTop()>50&&"none"===$("#sidebar-trigger").css("display")?$("#back-to-top").fadeIn():$("#back-to-top").fadeOut()}),$("#back-to-top").click(()=>($("body,html").animate({scrollTop:0},800),!1))}),$(function(){const e=$("#sidebar-trigger"),t=$("#search-trigger"),o=$("#search-cancel"),a=$("#search-cleaner"),s=$("#main"),n=$("#topbar-title"),l=$("#search-wrapper"),r=$("#search-result-wrapper"),i=$("#search-results"),c=$("#search-input"),d=$("#search-hints"),u=function(){let e=0;return{block(){e=window.scrollY,$("html,body").scrollTop(0)},release(){$("html,body").scrollTop(e)},getOffset:()=>e}}(),f={on(){e.addClass("unloaded"),n.addClass("unloaded"),t.addClass("unloaded"),l.addClass("d-flex"),o.addClass("loaded")},off(){o.removeClass("loaded"),l.removeClass("d-flex"),e.removeClass("unloaded"),n.removeClass("unloaded"),t.removeClass("unloaded")}},h=function(){let e=!1;return{on(){e||(u.block(),r.removeClass("unloaded"),s.addClass("unloaded"),e=!0)},off(){e&&(i.empty(),d.hasClass("unloaded")&&d.removeClass("unloaded"),r.addClass("unloaded"),a.removeClass("visible"),s.removeClass("unloaded"),u.release(),c.val(""),e=!1)},isVisible:()=>e}}();function p(){return o.hasClass("loaded")}t.click(function(){f.on(),h.on(),c.focus()}),o.click(function(){f.off(),h.off()}),c.focus(function(){l.addClass("input-focus")}),c.focusout(function(){l.removeClass("input-focus")}),c.on("keyup",function(e){8===e.keyCode&&""===c.val()?p()?d.removeClass("unloaded"):h.off():""!==c.val()&&(h.on(),a.hasClass("visible")||a.addClass("visible"),p()&&d.addClass("unloaded"))}),a.on("click",function(){c.val(""),p()?(d.removeClass("unloaded"),i.empty()):h.off(),c.focus(),a.removeClass("visible")})}),$(function(){const e=function(){let e=!1;const t=$("body");return{toggle(){!1===e?t.attr("sidebar-display",""):t.removeAttr("sidebar-display"),e=!e}}}();$("#sidebar-trigger").click(e.toggle),$("#mask").click(e.toggle)}),$(function(){$('[data-toggle="tooltip"]').tooltip()}),$(function(){const e=$("#topbar-wrapper"),t=$("#toc-wrapper"),o=$(".access"),a=$("#search-input");let s,n=0;const l=5,r=e.outerHeight();$(window).scroll(function(e){$("#topbar-title").is(":hidden")&&(s=!0)}),setInterval(function(){s&&(!function(){var s=$(this).scrollTop();Math.abs(n-s)<=l||(s>n&&s>r?(e.removeClass("topbar-down").addClass("topbar-up"),t.length>0&&t.removeClass("topbar-down"),o.length>0&&o.removeClass("topbar-down"),a.is(":focus")&&a.blur()):s+$(window).height()<$(document).height()&&(e.removeClass("topbar-up").addClass("topbar-down"),t.length>0&&t.addClass("topbar-down"),o.length>0&&o.addClass("topbar-down")),n=s)}(),s=!1)},250)}),$(function(){const e=$("#topbar-title"),t=$("div.post>h1"),o=e.text().trim();let a=t.length>0?t.text().trim():$("h1").text().trim();($("#page-category").length||$("#page-tag").length)&&/\s/.test(a)&&(a=a.replace(/[0-9]/g,"").trim()),$(window).scroll(function(){if($("#post-list").length||t.is(":hidden")||e.is(":hidden")||$("#sidebar.sidebar-expand").length)return!1;$(this).scrollTop()>=95?e.text()!==a&&e.text(a):e.text()!==o&&e.text(o)}),e.click(function(){$("body,html").animate({scrollTop:0},800)})}),$(function(){const e="#main > div.row:first-child > div:first-child";if($(`${e} img`).length<=0)return;const t=document.querySelectorAll(`${e} img[data-src]`);lozad(t).observe(),$(`${e} p > img[data-src],${e} img[data-src].preview-img`).each(function(){let e=$(this).next();const t="EM"===e.prop("tagName")?e.text():"",o=$(this).attr("data-src");$(this).wrap(`<a href="${o}" title="${t}" class="popup img-link"></a>`)}),$(".popup").magnificPopup({type:"image",closeOnContentClick:!0,showCloseBtn:!1,zoom:{enabled:!0,duration:300,easing:"ease-in-out"}})}),$(function(){let e=$(".timeago").length,t=void 0;function o(){return $(".timeago").each(function(){if($(this).children("i").length>0){let t=$(this).children("i"),o=t.text();$(this).text(function(t,o){let a=new Date,s=new Date(t),n=void 0!==o?`${o} `:"";if(s.getFullYear()!==a.getFullYear())return e-=1,n+s.toLocaleString("en-US",{year:"numeric",month:"short",day:"numeric"});if(s.getMonth()!==a.getMonth())return e-=1,n+s.toLocaleString("en-US",{month:"short",day:"numeric"});let l=Math.floor((a-s)/1e3),r=Math.floor(l/86400);if(r>=1)return e-=1,r+" day"+(r>1?"s":"")+" ago";let i=Math.floor(l/3600);if(i>=1)return i+" hour"+(i>1?"s":"")+" ago";let c=Math.floor(l/60);return c>=1?c+" minute"+(c>1?"s":"")+" ago":"just now"}(o,$(this).attr("prep"))),$(this).append(t)}}),0===e&&void 0!==t&&clearInterval(t),e}0!==e&&o()>0&&(t=setInterval(o,6e4))}),$(function(){$("input[type=checkbox]").addClass("unloaded"),$("input[type=checkbox][checked]").before('<i class="fas fa-check-circle checked"></i>'),$("input[type=checkbox]:not([checked])").before('<i class="far fa-circle"></i>')}),$(function(){$("a[href*='#']").not("[href='#']").not("[href='#0']").click(function(e){if(this.pathname.replace(/^\//,"")===location.pathname.replace(/^\//,"")&&location.hostname===this.hostname){const t=16,o=decodeURI(this.hash);let a=RegExp(/^#fnref:/).test(o),s=RegExp(/^#fn:/).test(o),n=o.includes(":")?o.replace(/\:/,"\\:"):o,l=$(n);if(l.length){e.preventDefault(),history.pushState&&history.pushState(null,null,o);let n=$(this).offset().top,r=l.offset().top;const i=r<n,c=$("#topbar-wrapper").outerHeight();i&&a&&(r-=c+t/2),$("html,body").animate({scrollTop:r},800,()=>{const e=$(l);e.focus();if($("[scroll-focus=true]").length&&$("[scroll-focus=true]").attr("scroll-focus",!1),$(":target").length&&$(":target").attr("scroll-focus",!1),(s||a)&&e.attr("scroll-focus",!0),e.is(":focus"))return!1;e.attr("tabindex","-1"),e.focus()})}}})});
\ No newline at end of file
diff --git a/gulpfile.js/tasks/js.js b/gulpfile.js/tasks/js.js
index b464ede..3eef87e 100644
--- a/gulpfile.js/tasks/js.js
+++ b/gulpfile.js/tasks/js.js
@@ -45,7 +45,6 @@ const postJs = () => {
       `${JS_SRC}/commons/*.js`,
       `${JS_SRC}/utils/img-extra.js`,
       `${JS_SRC}/utils/timeago.js`,
-      `${JS_SRC}/utils/lang-badge.js`,
       `${JS_SRC}/utils/checkbox.js`,
       `${JS_SRC}/utils/copy-link.js`,
       // 'smooth-scroll.js' must be called after ToC is ready