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<title>[58148] trunk/src/wp-includes/unicode.php: Quick-fix: Normalize UTF-8 charset slug detection.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/58148">58148</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/58148","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>dmsnell</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2024-05-14 18:05:39 +0000 (Tue, 14 May 2024)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Quick-fix: Normalize UTF-8 charset slug detection.
In the merge of <a href="https://core.trac.wordpress.org/changeset/58417">[58417]</a> the new file was missed. This commit adds the missing required file.
Developed in https://github.com/WordPress/wordpress-develop/pull/6535
Discussed in https://core.trac.wordpress.org/ticket/61182
Fixes <a href="https://core.trac.wordpress.org/ticket/61182">#61182</a>.
Follow-up to <a href="https://core.trac.wordpress.org/changeset/58147">[58147]</a>.
Props dmsnell, jonsurrell.</pre>
<h3>Added Paths</h3>
<ul>
<li><a href="#trunksrcwpincludesunicodephp">trunk/src/wp-includes/unicode.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludesunicodephp"></a>
<div class="addfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Added: trunk/src/wp-includes/unicode.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/unicode.php (rev 0)
+++ trunk/src/wp-includes/unicode.php 2024-05-14 18:05:39 UTC (rev 58148)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -0,0 +1,51 @@
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+<?php
+/**
+ * WordPress API providing Unicode-relevant utilities.
+ *
+ * @since 6.6.0
+ *
+ * @package WordPress
+ */
+
+/**
+ * Indicates if a given slug for a character set represents the UTF-8
+ * text encoding. If not provided, examines the current blog's charset.
+ *
+ * A charset is considered to represent UTF-8 if it is a case-insensitive
+ * match of "UTF-8" with or without the hyphen.
+ *
+ * Example:
+ *
+ * true === is_utf8_charset( 'UTF-8' );
+ * true === is_utf8_charset( 'utf8' );
+ * false === is_utf8_charset( 'latin1' );
+ * false === is_utf8_charset( 'UTF 8' );
+ *
+ * // Only strings match.
+ * false === is_utf8_charset( [ 'charset' => 'utf-8' ] );
+ *
+ * // Without a given charset, it depends on the site option "blog_charset".
+ * $is_utf8 = is_utf8_charset();
+ *
+ * @since 6.6.0
+ *
+ * @param ?string $blog_charset Slug representing a text character encoding, or "charset".
+ * E.g. "UTF-8", "Windows-1252", "ISO-8859-1", "SJIS".
+ * @return bool Whether the slug represents the UTF-8 encoding.
+ */
+function is_utf8_charset( $blog_charset = null ) {
+ $charset_to_examine = $blog_charset ?? get_option( 'blog_charset' );
+
+ /*
+ * Only valid string values count: the absence of a charset
+ * does not imply any charset, let alone UTF-8.
+ */
+ if ( ! is_string( $charset_to_examine ) ) {
+ return false;
+ }
+
+ return (
+ 0 === strcasecmp( 'UTF-8', $charset_to_examine ) ||
+ 0 === strcasecmp( 'UTF8', $charset_to_examine )
+ );
+}
</ins><span class="cx" style="display: block; padding: 0 10px">Property changes on: trunk/src/wp-includes/unicode.php
</span><span class="cx" style="display: block; padding: 0 10px">___________________________________________________________________
</span></span></pre></div>
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<ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+native
</ins><span class="cx" style="display: block; padding: 0 10px">\ No newline at end of property
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