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<title>[54330] trunk/src/wp-includes/blocks.php: Editor: Correctly load RTL stylesheets in `register_block_style_handle()`.</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/54330">54330</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/54330","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>SergeyBiryukov</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2022-09-27 15:41:15 +0000 (Tue, 27 Sep 2022)</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'>Editor: Correctly load RTL stylesheets in `register_block_style_handle()`.
When setting an RTL language under Settings {U+2192} General, some RTL stylesheets were not loaded, with LTR stylesheets being loaded instead, meaning that some blocks were not displayed correctly.
This commit ensures that all appropriate RTL stylesheets are loaded when selecting an RTL language.
Additionally, this commit improves performance by only running a `file_exists()` check for an RTL stylesheet if `is_rtl()` returns true, i.e. an RTL locale is selected.
Follow-up to <a href="https://core.trac.wordpress.org/changeset/49982">[49982]</a>, <a href="https://core.trac.wordpress.org/changeset/50836">[50836]</a>.
Props zoonini, sabernhardt, maahrokh, ankit-k-gupta, aristath, poena, SergeyBiryukov.
See <a href="https://core.trac.wordpress.org/ticket/56325">#56325</a>.</pre>
<h3>Modified Paths</h3>
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<li><a href="#trunksrcwpincludesblocksphp">trunk/src/wp-includes/blocks.php</a></li>
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<h3>Diff</h3>
<a id="trunksrcwpincludesblocksphp"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/wp-includes/blocks.php</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/wp-includes/blocks.php 2022-09-27 15:21:48 UTC (rev 54329)
+++ trunk/src/wp-includes/blocks.php 2022-09-27 15:41:15 UTC (rev 54330)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -251,14 +251,13 @@
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> if ( $has_style_file ) {
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">- if ( file_exists( str_replace( '.css', '-rtl.css', $style_path_norm ) ) ) {
- wp_style_add_data( $style_handle, 'rtl', 'replace' );
- }
-
</del><span class="cx" style="display: block; padding: 0 10px"> wp_style_add_data( $style_handle, 'path', $style_path_norm );
</span><span class="cx" style="display: block; padding: 0 10px">
</span><span class="cx" style="display: block; padding: 0 10px"> $rtl_file = str_replace( "{$suffix}.css", "-rtl{$suffix}.css", $style_path_norm );
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+
</ins><span class="cx" style="display: block; padding: 0 10px"> if ( is_rtl() && file_exists( $rtl_file ) ) {
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+ wp_style_add_data( $style_handle, 'rtl', 'replace' );
+ wp_style_add_data( $style_handle, 'suffix', $suffix );
</ins><span class="cx" style="display: block; padding: 0 10px"> wp_style_add_data( $style_handle, 'path', $rtl_file );
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span><span class="cx" style="display: block; padding: 0 10px"> }
</span></span></pre>
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