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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 |
|---|---|
| 1361 | // Not a match |
| 1362 | if ( substr($pattern, 0, 2) != '%l' ) |
| 1363 | return $pattern; |
| 1364 | |
| 1365 | // Nothing to work with |
| 1366 | if ( empty($args) ) |
| 1367 | return ''; |
| 1368 | |
| 1369 | // Translate and filter the delimiter set (avoid ampersands and entities here) |
| 1370 | $l = apply_filters('wp_sprintf_l', array( |
| 1371 | 'between' => _c(', |between list items'), |
| 1372 | 'between_last_two' => _c(', and |between last two list items'), |
| 1373 | 'between_only_two' => _c(' and |between only two list items'), |
| 1374 | )); |
| 1375 | |
| 1376 | $args = (array) $args; |
| 1377 | $result = array_shift($args); |
| 1378 | if ( count($args) == 1 ) |
| 1379 | $result .= $l['between_only_two'] . array_shift($args); |