I have a particular post type where I want the editor's default format block to be H3. So, when you create a new empty post and begin typing in the editor, the text would automatically default to being an H3.
Currently the default is set to be a Paragraph, which means even if I create some text and set it to be Heading 3 (H3), when I create a new line the block format automatically goes back to Paragraph, too.
As a test, I even removed all the block formats except for H3, but that didn't work—the block format dropdown displays "Heading 3," but the text is still formatted as a paragraph (<p>).
To be clear, I do still want control over the block format. I just want to be able to change the default.
Here's my failed attempt to remove everything except H3:
function set_h3_default($init) {
$block_formats = array(
'Heading 3=h3',
);
$init['block_formats'] = implode(';', $block_formats);
return $init;
}
add_filter('tiny_mce_before_init', 'set_h3_default');