joseluis

<?php

add_action( 'admin_init', function() {

	// remove the color scheme picker
	remove_action( 'admin_color_scheme_picker', 'admin_color_scheme_picker' );

	// force all users to use the "Ectoplasm" color scheme
	add_filter( 'get_user_option_admin_color', function() {
		return 'ectoplasm';

joseluis

<?php

add_filter( 'get_user_option_admin_color', function( $color_scheme ) {

	global $_wp_admin_css_colors;

	if ( ! isset( $_wp_admin_css_colors[ $color_scheme ] ) ) {
		$color_scheme = 'ectoplasm';
	}

joseluis

<?php

add_action( 'pre_option_image_default_link_type', function() {
	return 'none'; // 'file', 'post' or 'none'
});

joseluis

<?php

add_action( 'do_feed_rdf', function() { wp_redirect( home_url(), 301 ); exit; }, 1);
add_action( 'do_feed_rss', function() { wp_redirect( home_url(), 301 ); exit; }, 1);
add_action( 'do_feed_rss2', function() { wp_redirect( home_url(), 301 ); exit; }, 1);
add_action( 'do_feed_atom', function() { wp_redirect( home_url(), 301 ); exit; }, 1);
add_action( 'init', function() {
	remove_action( 'wp_head', 'feed_links', 2 );
	remove_action( 'wp_head', 'feed_links_extra', 3 );
});

joseluis

<?php

if ( ! is_admin() ) {
	add_action( 'parse_query', function( $query ) {
		if ( $query->is_search ) {
			unset( $_GET['s'], $_POST['s'], $_REQUEST['s'] );
			$query->set( 's', '' );
			$query->is_search = false;
			$query->set_404();
			header( $_SERVER[ 'SERVER_PROTOCOL' ] . ' 404 Not Found' );

joseluis

<?php

add_action( 'template_redirect', function() {

	global $wp_query;

	if ( is_home() || $wp_query->is_singular( 'post' ) || $wp_query->is_post_type_archive( 'post' ) ) {
		header( $_SERVER[ 'SERVER_PROTOCOL' ] . ' 404 Not Found' );
		$wp_query->set_404();
	}

joseluis

<?php

// always paste as plain text
foreach ( array( 'tiny_mce_before_init', 'teeny_mce_before_init') as $filter ) {
	add_filter( $filter, function( $mceInit ) {
		$mceInit[ 'paste_text_sticky' ] = true;
		$mceInit[ 'paste_text_sticky_default' ] = true;
		return $mceInit;
	});
}