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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 |
|---|---|
| 539 | } |
| 540 | |
| 541 | /** |
| 542 | * Filter the comma-delimited list of stylesheets to load in TinyMCE. |
| 543 | * |
| 544 | * @since 2.1.0 |
| 545 | * |
| 546 | * @param array $stylesheets Comma-delimited list of stylesheets. |
| 547 | */ |
| 548 | $mce_css = trim( apply_filters( 'mce_css', implode( ',', $mce_css ) ), ' ,' ); |
| 549 | |
| 550 | if ( ! empty($mce_css) ) |
| 551 | self::$first_init['content_css'] = $mce_css; |
| 552 | } |
| 553 | |
| 554 | if ( $set['teeny'] ) { |
| 555 | |
| 556 | /** |
| 557 | * Filter the list of teenyMCE buttons (Text tab). |