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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 |
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623 |
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624 | /** |
625 | * Filters the first-row list of TinyMCE buttons (Visual tab). |
626 | * |
627 | * @since 2.0.0 |
628 | * |
629 | * @param array $buttons First-row list of buttons. |
630 | * @param string $editor_id Unique editor identifier, e.g. 'content'. |
631 | */ |
632 | $mce_buttons = apply_filters( 'mce_buttons', $mce_buttons, $editor_id ); |
633 |
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634 | $mce_buttons_2 = array( 'strikethrough', 'hr', 'forecolor', 'pastetext', 'removeformat', 'charmap', 'outdent', 'indent', 'undo', 'redo' ); |
635 |
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636 | if ( ! wp_is_mobile() ) { |
637 | $mce_buttons_2[] = 'wp_help'; |
638 | } |
639 |
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640 | /** |
641 | * Filters the second-row list of TinyMCE buttons (Visual tab). |