WordPress 4.3 have no markdown implementation, it is only a short list of shortcuts.
The shortcuts active on default. It give no UI area to active/deactivated them.
As small hint for updates posts. I seen often, that works only on new posts, no old drafts. But I haven’t debug this.
Which Formatting Shortcuts
WordPress 4.3 came with a new feature called formatting shortcuts. It allows users to quickly add common text formatting without removing their hands from the keyboard and without writing any HTML.
- Using * or – will start an unordered list.
- Using 1. or 1) will start an ordered list.
- Using # will transform into h1. ## for h2, ### for h3 and so on.
- Using > will transform into blockquote.
Deactivate shortcuts
The only way to deactivate is a small piece of code, like in a simple custom plugin.
add_filter( 'tiny_mce_before_init', 'fb_disable_mce_wptextpattern' );
function fb_disable_mce_wptextpattern( $opt ) {
if ( isset( $opt['plugins'] ) && $opt['plugins'] ) {
$opt['plugins'] = explode( ',', $opt['plugins'] );
$opt['plugins'] = array_diff( $opt['plugins'] , array( 'wptextpattern' ) );
$opt['plugins'] = implode( ',', $opt['plugins'] );
}
return $opt;
}