Hmm, not filtering anything. If I’m not mistaken, the section of code that needs to be altered is here under theme functions:
function portfoliopress_content_nav() {
global $wp_query;
if ( $wp_query->max_num_pages > 1 ) :
if (function_exists('wp_pagenavi') ) {
wp_pagenavi();
} else { ?>
<nav id="nav-below">
<h1 class="screen-reader-text"><?php _e( 'Post navigation', 'portfoliopress' ); ?></h1>
<div class="nav-previous"><?php next_posts_link( __( '<span class="meta-nav">←</span> Older posts', 'portfoliopress' ) ); ?></div>
<div class="nav-next"><?php previous_posts_link( __( 'Newer posts <span class="meta-nav">→</span>', 'portfoliopress' ) ); ?></div>
</nav><!-- #nav-below -->
<?php }
endif;
}
That’s the only place I can seem to find it calling for next and previous posts, but I can’t figure out what to do with that to fix it.