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By default, Relevanssi replaces slashes with spaces, so “AC/DC” becomes “AC DC” and isn’t indexed, because the words are too short.
Add this to your site:
add_filter( 'relevanssi_punctuation_filter', 'rlv_adjust_punctuation' );
function rlv_adjust_punctuation( $replacements ) {
$replacements['/'] = '';
return $replacements;
}
Rebuild the index, and now “AC/DC” is indexed as “ACDC”.
Mikko – you’re awesome. Thanks so much!