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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 |
|---|---|
| 18 | <?php |
| 19 | /** This action is documented in wp-includes/feed-atom.php */ |
| 20 | do_action( 'atom_ns' ); |
| 21 | |
| 22 | /** |
| 23 | * Fires inside the feed tag in the Atom comment feed. |
| 24 | * |
| 25 | * @since 2.8.0 |
| 26 | */ |
| 27 | do_action( 'atom_comments_ns' ); |
| 28 | ?> |
| 29 | > |
| 30 | <title type="text"> |
| 31 | <?php |
| 32 | if ( is_singular() ) { |
| 33 | /* translators: Comments feed title. %s: Post title */ |
| 34 | printf( ent2ncr( __( 'Comments on %s' ) ), get_the_title_rss() ); |
| 35 | } elseif ( is_search() ) { |
| 36 | /* translators: Comments feed title. 1: Site name, 2: Search query */ |