Reverse page order in wp_list_comments() with newest comments first

[Ninos Ego]

Hey there,
since wp 4.4 there were lots of bugs in the wp_list_comments()-function. Some of them are already fixed, now I found another one.
If you change the comments order from default (oldest first) to newest first, the page order is wrong (reverse page order).

Example

You have 4 pages by sending following param you get these pages:

page=1 -> 4
page=2 -> 3
page=3 -> 2
page=4 -> 1

How I call this function

Inside the post-loop I'm calling:

<?php
while ( have_posts() ) : the_post();
    get_template_part( 'templates/content', 'comment' );

The template file templates/content-comment.php has following content:

<?php if ( ! defined( 'ABSPATH' ) ) {
        exit;
} ?>

<?php global $withcomments; ?>
<?php $withcomments = 1; ?>
<?php add_filter( 'comments_template', '__return_true' ); ?>

<?php if ( comments_open() || get_comments_number() ) : ?>
        <div class="entry-comment">
                <?php comments_template( '/comments-content.php' ); ?>
        </div>
<?php endif; ?>

And comments-content.php has following part:

<?php
wp_list_comments( array(
        'page'     => $cpaged, // Variable defined before, default: 1
        'per_page' => 2
) );
?>

PS: In ticketing system the version 4.4.2 is not available :-)

[boonebgorges]

Thanks for the ticket. I'll review.

[chriscct7]

@boonebgorges have you reviewed the patch, or should we punt this a release per discussion in ticket triage?

[boonebgorges]

Replying to chriscct7:

@boonebgorges have you reviewed the patch, or should we punt this a release per discussion in ticket triage?

There's no patch to review. We'll have to punt.

[Ninos Ego]

Will this bug be fixed in new version 4.5? :)

[boonebgorges]

Replying to Ninos Ego:

Will this bug be fixed in new version 4.5? :)

No, unfortunately. I haven't yet been able to find a suitable solution. If you have ideas, please feel free to post them here. Otherwise we'll try for 4.6.

Removed the $start/$end swap after array_reverse() in both paths of Walker::paged_walk() (flat and threaded). Previously page 1 selected the last window of the reversed array (oldest comments displayed newest-first), which is why pages ran backwards. Now pagination follows display order directly: page 1 of a newest-first list starts with the newest comments.

Trac ticket: https://core.trac.wordpress.org/ticket/35805

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