Title: “%MINIFYHTML%” not replaced [Syntax-highlighting Code Block Plugin]
Last modified: August 2, 2020

---

# “%MINIFYHTML%” not replaced [Syntax-highlighting Code Block Plugin]

 *  Resolved [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/)
 * Hi,
 * I’m using Autoptimize on my site to minify the HTML, CSS, and JS. If I use the“
   Syntax-highlighting Code Block” Plugin ([https://wordpress.org/plugins/syntax-highlighting-code-block/](https://wordpress.org/plugins/syntax-highlighting-code-block/)),
   Autoptimize leaves an unreplaced %MINIFYHTML% placeholder inside the code block
   on the website’s frontend.
 * Never saw this before in any other block with Autoptimize.
 * If I set the “Autoptimize Settings” -> “Also aggregate inline CSS?” to “Yes”,
   the placeholder is replaced.
 * It looks like %MINIFYHTML43903717bc81998ee44729dd57469a6617%
 *     ```
       <pre class="wp-block-code">
         %MINIFYHTML43903717bc81998ee44729dd57469a6617%
         <div>
           <code class="hljs language-apache shcb-code-table shcb-line-numbers shcb-wrap-lines"><span class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteEngine</span></span> <span class="hljs-literal">On</span>
       </span></span>
           </code>
         </div>
       </pre>
       ```
   
 * I first reported this to the “Syntax-highlighting Code Block” support page: [https://wordpress.org/support/topic/autoptimize-leaves-minifyhtml-placeholder-in-code-block/](https://wordpress.org/support/topic/autoptimize-leaves-minifyhtml-placeholder-in-code-block/)
 * Cheers,
    Andreas
    -  This topic was modified 5 years, 9 months ago by [camya](https://wordpress.org/support/users/ecc/).

Viewing 13 replies - 1 through 13 (of 13 total)

 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13200471)
 * Interesting .. So what does the unoptimized block between `<pre></pre>` look 
   like?
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13202047)
 * The unminified markup of the “Syntax-highlighting Code Block Plugin” looks like
   this.
 *     ```
       <pre class="wp-block-code">
           <link
               rel="stylesheet"
               id="syntax-highlighting-code-block-css"
               href="/wp-content/plugins/syntax-highlighting-code-block/vendor/scrivo/highlight-php/styles/default.css?ver=1596185250"
               type="text/css"
               media="all"
           >
           <style>.wp-block-code {
               border: 0;
               padding: 0;
           }
   
           .wp-block-code > div {
               overflow: auto;
           }
   
           .hljs {
               box-sizing: border-box;
           }
   
           .hljs.shcb-code-table {
               display: table;
               width: 100%;
           }
   
           .hljs.shcb-code-table > .shcb-loc {
               color: inherit;
               display: table-row;
               width: 100%;
           }
   
           .hljs.shcb-code-table .shcb-loc > span {
               display: table-cell;
           }
   
           .wp-block-code code.hljs:not(.shcb-wrap-lines) {
               white-space: pre;
           }
   
           .wp-block-code code.hljs.shcb-wrap-lines {
               white-space: pre-wrap;
           }
   
           .hljs.shcb-line-numbers {
               border-spacing: 0;
               counter-reset: line;
           }
   
           .hljs.shcb-line-numbers > .shcb-loc {
               counter-increment: line;
           }
   
           .hljs.shcb-line-numbers .shcb-loc > span {
               padding-left: 0.75em;
           }
   
           .hljs.shcb-line-numbers .shcb-loc::before {
               border-right: 1px solid #ddd;
               content: counter(line);
               display: table-cell;
               padding: 0 0.75em;
               text-align: right;
               -webkit-user-select: none;
               -moz-user-select: none;
               -ms-user-select: none;
               user-select: none;
               white-space: nowrap;
               width: 1%;
           }
           </style>
           <style>.hljs > mark.shcb-loc {
               background-color: #ddf6ff;
           }</style>
           <div>
               <code class="hljs language-apache shcb-code-table shcb-line-numbers"><span class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteEngine</span></span> <span class="hljs-literal">On</span></span></span>
                   <mark class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteCond</span></span> <span class="hljs-variable">%{HTTP:Custom-Access-Header}</span> !^REQUIRED_ACCESS_STRING$</span></mark>
                   <span class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteRule</span></span> ^ -<span class="hljs-meta"> [F]</span></span></span>
               </code>
           </div>
       </pre>
       ```
   
    -  This reply was modified 5 years, 9 months ago by [camya](https://wordpress.org/support/users/ecc/).
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13202144)
 * OK, and can you check the PHP-errorlog for relevant errors maybe?
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13202188)
 * There is no related error log entry.
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13203608)
 * OK, can you try adding either `syntax-highlighting-code-block-css` or `.hljs`
   to the comma-separated CSS optimization exclusion field so we know which one 
   triggers the bug?
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13203978)
 * Strange. I can’t find a field to add CSS IDs or classes. The only field to add
   text is the “Exclude CSS from Autoptimize:” field. (A comma-separated list of“
   scripts”)
 * I first added “#syntax-highlighting-code-block-css”, and then “.hljs” to this
   field and hit empty cache.
 * The placeholder is still visible in both tests.
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13204691)
 * that’s the field 🙂
 * can you try just `syntax-highlighting-code-block-css`? or `scrivo/highlight-php/
   styles/default.css`?
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13205606)
 * 🙂
 * Added both entries. The placeholder was still visible in both cases.
 * Only if I activate the “Also aggregate inline CSS” option, everything looks fine.
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13206392)
 * > Only if I activate the “Also aggregate inline CSS” option, everything looks
   > fine.
 * also in the aggregated CSS? or does that just move the %MINIFYHTML43903717bc81998ee44729dd57469a6617%
   to the CSS-file?
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13206467)
 * Below is the HTML with “Also aggregate inline CSS” activated.
 * The CSS is added to the generated CSS “`/wp-content/cache/autoptimize/css/autoptimize_de0c11f5cb9efdfef064317fa7f429e5.
   css`” file.
 * The output looks like expected.
 *     ```
       <pre class="wp-block-code">
           <div>
               <code class="hljs language-apache shcb-code-table shcb-line-numbers"><span class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteEngine</span></span> <span class="hljs-literal">On</span>
       </span></span><mark class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteCond</span></span> <span class="hljs-variable">%{HTTP:Custom-Access-Header}</span> !^REQUIRED_ACCESS_STRING$
       </span></mark><span class="shcb-loc"><span><span class="hljs-attribute"><span class="hljs-nomarkup">RewriteRule</span></span> ^ -<span class="hljs-meta"> [F]</span>
       </span></span>
               </code>
           </div>
       </pre>
       ```
   
 * **Content of the generated CSS autoptimize_de0c11f5cb9efdfef064317fa7f429e5.css
   file.**
 *     ```
       .hljs{display:block;overflow-x:auto;padding:.5em;background:#f0f0f0}.hljs,.hljs-subst{color:#444}.hljs-comment{color:#888}.hljs-keyword,.hljs-attribute,.hljs-selector-tag,.hljs-meta-keyword,.hljs-doctag,.hljs-name{font-weight:700}.hljs-type,.hljs-string,.hljs-number,.hljs-selector-id,.hljs-selector-class,.hljs-quote,.hljs-template-tag,.hljs-deletion{color:#800}.hljs-title,.hljs-section{color:#800;font-weight:700}.hljs-regexp,.hljs-symbol,.hljs-variable,.hljs-template-variable,.hljs-link,.hljs-selector-attr,.hljs-selector-pseudo{color:#bc6060}.hljs-literal{color:#78a960}.hljs-built_in,.hljs-bullet,.hljs-code,.hljs-addition{color:#397300}.hljs-meta{color:#1f7199}.hljs-meta-string{color:#4d99bf}.hljs-emphasis{font-style:italic}.hljs-strong{font-weight:700}
       .wp-block-code{border:0;padding:0}.wp-block-code>div{overflow:auto}.hljs{box-sizing:border-box}.hljs.shcb-code-table{display:table;width:100%}.hljs.shcb-code-table>.shcb-loc{color:inherit;display:table-row;width:100%}.hljs.shcb-code-table .shcb-loc>span{display:table-cell}.wp-block-code code.hljs:not(.shcb-wrap-lines){white-space:pre}.wp-block-code code.hljs.shcb-wrap-lines{white-space:pre-wrap}.hljs.shcb-line-numbers{border-spacing:0;counter-reset:line}.hljs.shcb-line-numbers>.shcb-loc{counter-increment:line}.hljs.shcb-line-numbers .shcb-loc>span{padding-left:.75em}.hljs.shcb-line-numbers .shcb-loc:before{border-right:1px solid #ddd;content:counter(line);display:table-cell;padding:0 .75em;text-align:right;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none;white-space:nowrap;width:1%}
       .hljs>mark.shcb-loc{background-color:#ddf6ff}
       ```
   
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13209405)
 * OK, was able to reproduce and have a fix (in the 3rd party HTML minifier) for
   you to test; can you open `wp-content/plugins/autoptimize/classes/external/php/
   minify-html.php` and on line 161 add:
 * `$this->_placeholders = array_reverse( $this->_placeholders, true );`
 * Let me know if this fixes things for you (it seems to work on my localhost installation)?
 * frank
 *  Thread Starter [camya](https://wordpress.org/support/users/ecc/)
 * (@ecc)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13214479)
 * Hi Frank,
 * I tested the hot fix… and it works. The unreplaced placeholder is gone now.
 * Thank you for your support, and thank you for your plugin.
 * Cheers,
    Andreas
 *  Plugin Author [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * (@optimizingmatters)
 * [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13214620)
 * thanks for testing & confirming, I’ll make sure this goes into the next version!
 * frank

Viewing 13 replies - 1 through 13 (of 13 total)

The topic ‘“%MINIFYHTML%” not replaced [Syntax-highlighting Code Block Plugin]’ 
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 * 13 replies
 * 2 participants
 * Last reply from: [Optimizing Matters](https://wordpress.org/support/users/optimizingmatters/)
 * Last activity: [5 years, 9 months ago](https://wordpress.org/support/topic/minifyhtml-not-replaced-syntax-highlighting-code-block-plugin/#post-13214620)
 * Status: resolved