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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 |
|---|---|
| 263 | if ( empty($feed) ) |
| 264 | $feed = get_default_feed(); |
| 265 | |
| 266 | if ( false !== strpos($feed, 'comments_') ) |
| 267 | $feed = str_replace('comments_', 'comments-', $feed); |
| 268 | |
| 269 | $output = get_option('home') . "/?feed={$feed}"; |
| 270 | } |
| 271 | |
| 272 | return apply_filters('feed_link', $output, $feed); |
| 273 | } |
| 274 | |
| 275 | function get_post_comments_feed_link($post_id = '', $feed = '') { |
| 276 | global $id; |
| 277 | |
| 278 | if ( empty($post_id) ) |
| 279 | $post_id = (int) $id; |
| 280 | |
| 281 | if ( empty($feed) ) |