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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 78 | */ |
| 79 | $GLOBALS['post'] = $comment_post; |
| 80 | ?> |
| 81 | <item> |
| 82 | <title> |
| 83 | <?php |
| 84 | if ( ! is_singular() ) { |
| 85 | $title = get_the_title( $comment_post->ID ); |
| 86 | /** This filter is documented in wp-includes/feed.php */ |
| 87 | $title = apply_filters( 'the_title_rss', $title ); |
| 88 | /* translators: Individual comment title. 1: Post title, 2: Comment author name. */ |
| 89 | printf( ent2ncr( __( 'Comment on %1$s by %2$s' ) ), $title, get_comment_author_rss() ); |
| 90 | } else { |
| 91 | /* translators: Comment author title. %s: Comment author name. */ |
| 92 | printf( ent2ncr( __( 'By: %s' ) ), get_comment_author_rss() ); |
| 93 | } |
| 94 | ?> |
| 95 | </title> |
| 96 | <link><?php comment_link(); ?></link> |