Characters like &,<,? does not seem to be showing correctly in some Doc pages

[kmarcink]

There seem to be something wrong with the WP coding standards page ​https://developer.wordpress.org/coding-standards/wordpress-coding-standards/php/
Characters like &,<,? does not seem to be showing correctly.

You can find them by searching for example for

• &amp;
• &lt;

[coffee2code]

Thanks for the report!

This is an outstanding issue in general that for which the likely culprit is the SyntaxHighlighter Evolved plugin's handling of code shortcodes. Its block handling is superior and doesn't have this issue, but in this case the Code Standards Handbook is fully imported from GitHub, and thus originates as text in a Markdown format.

I believe the issue would be resolved if the source documents avoided the use of code shortcodes (e.g. [php], [html], [css], [javascript], or [code]) and instead used triple backticks (with optional language hinting) without pre-encoding, e.g.

```html
<div class="hfeed">
        <article id="post-" class="">
            <!-- ... -->
        </article>
</div>
```

The Block Editor Handbook is also imported from GitHub and uses backticks (e.g. ​a source .md file and its ​resultant handbook page) which could be used for reference.

In the meantime, I'll push up a stopgap "fix" that addresses the display issue.

cc: @netweb

[coffee2code]

In 10190:

Developer, Code Standards Handbook: Fix (as a stopgap) double-encoding of HTML entities.

SyntaxHighligher Evolved's handling of HTML entities in code shortcodes is the likely culprit. Use of triple backticks in the source Markdown files to denote code blocks (as done in the Block Editor Handbook) could circumvent the issue.

Props kmarcink, coffee2code.
Fixes #5346.

[coffee2code]

In 10366:

Developer, Code Standards Handbook: Extend double-encoding fix to include single quotes.

Fixes ​https://github.com/WordPress/wpcs-docs/issues/46.
See #5346.