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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 |
|---|---|
| 346 | if ( $file && file_exists( "$style_dir/$file" ) ) |
| 347 | $mce_css[] = "$style_uri/$file"; |
| 348 | } |
| 349 | |
| 350 | $mce_css = implode( ',', $mce_css ); |
| 351 | } else { |
| 352 | $mce_css = ''; |
| 353 | } |
| 354 | |
| 355 | $mce_css = trim( apply_filters( 'mce_css', $mce_css ), ' ,' ); |
| 356 | |
| 357 | if ( ! empty($mce_css) ) |
| 358 | self::$first_init['content_css'] = $mce_css; |
| 359 | } |
| 360 | |
| 361 | if ( $set['teeny'] ) { |
| 362 | $mce_buttons = apply_filters( 'teeny_mce_buttons', array('bold', 'italic', 'underline', 'blockquote', 'separator', 'strikethrough', 'bullist', 'numlist', 'justifyleft', 'justifycenter', 'justifyright', 'undo', 'redo', 'link', 'unlink', 'fullscreen'), $editor_id ); |
| 363 | $mce_buttons_2 = $mce_buttons_3 = $mce_buttons_4 = array(); |
| 364 | } else { |