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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 |
|---|---|
| 1340 | function start_el(&$output, $category, $depth, $args) { |
| 1341 | extract($args); |
| 1342 | |
| 1343 | $cat_name = esc_attr( $category->name); |
| 1344 | $cat_name = apply_filters( 'list_cats', $cat_name, $category ); |
| 1345 | $link = '<a href="' . get_term_link( $category, $category->taxonomy ) . '" '; |
| 1346 | if ( $use_desc_for_title == 0 || empty($category->description) ) |
| 1347 | $link .= 'title="' . sprintf(__( 'View all posts filed under %s' ), $cat_name) . '"'; |
| 1348 | else |
| 1349 | $link .= 'title="' . esc_attr( strip_tags( apply_filters( 'category_description', $category->description, $category ) ) ) . '"'; |
| 1350 | $link .= '>'; |
| 1351 | $link .= $cat_name . '</a>'; |
| 1352 | |
| 1353 | if ( (! empty($feed_image)) || (! empty($feed)) ) { |
| 1354 | $link .= ' '; |
| 1355 | |
| 1356 | if ( empty($feed_image) ) |
| 1357 | $link .= '('; |
| 1358 | |