CodeMirror Blocks

CodeMirror Blocks the_content

CodeMirror Blocks is a good plugin for displaying good-looking code blocks in WordPress (you can see it in action right here on Relevanssi.com!). There’s a problem with Relevanssi in-document highlighting and the CodeMirror block, though: enabling the highlighting will break all CodeMirror blocks on the page, even if the highlighting happens outside the block.

This problem happens because CodeMirrors stores the block parameters in a settings attribute, and Relevanssi in-document highlighting breaks that attribute. Fortunately, this is easy to fix with a filter function that runs after the Relevanssi in-document highlighting and fixes the broken attribute. Add this to your theme functions.php:

add_filter( 'the_content', 'rlv_restore_codemirror_settings', 12 );
function rlv_restore_codemirror_settings( $content ) {
    $data_settings_found = preg_match_all( '/data-setting="{(.*)}"/', $content, $data_settings );
    if ( $data_settings_found ) {
        foreach ( $data_settings[1] as $data_setting ) {
            $content = str_replace( $data_setting, htmlentities( $data_setting ), $content );
        }
    }
    return $content;
}

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