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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 |
|---|---|
| 4512 | $safe_tag = strtolower( preg_replace( '/[^a-zA-Z0-9_:]/', '', $tag_name ) ); |
| 4513 | /** |
| 4514 | * Filters a string cleaned and escaped for output as an HTML tag. |
| 4515 | * |
| 4516 | * @since 2.8.0 |
| 4517 | * |
| 4518 | * @param string $safe_tag The tag name after it has been escaped. |
| 4519 | * @param string $tag_name The text before it was escaped. |
| 4520 | */ |
| 4521 | return apply_filters( 'tag_escape', $safe_tag, $tag_name ); |
| 4522 | } |
| 4523 | |
| 4524 | /** |
| 4525 | * Convert full URL paths to absolute paths. |
| 4526 | * |
| 4527 | * Removes the http or https protocols and the domain. Keeps the path '/' at the |
| 4528 | * beginning, so it isn't a true relative link, but from the web root base. |
| 4529 | * |
| 4530 | * @since 2.1.0 |