diff -r 490d5cc509ed -r cf61fcea0001 wp/wp-admin/includes/options.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/wp/wp-admin/includes/options.php	Mon Oct 14 17:39:30 2019 +0200
@@ -0,0 +1,124 @@
+<?php
+/**
+ * WordPress Options Administration API.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ * @since 4.4.0
+ */
+
+/**
+ * Output JavaScript to toggle display of additional settings if avatars are disabled.
+ *
+ * @since 4.2.0
+ */
+function options_discussion_add_js() {
+?>
+	<script>
+	(function($){
+		var parent = $( '#show_avatars' ),
+			children = $( '.avatar-settings' );
+		parent.change(function(){
+			children.toggleClass( 'hide-if-js', ! this.checked );
+		});
+	})(jQuery);
+	</script>
+<?php
+}
+
+/**
+ * Display JavaScript on the page.
+ *
+ * @since 3.5.0
+ */
+function options_general_add_js() {
+?>
+<script type="text/javascript">
+	jQuery(document).ready(function($){
+		var $siteName = $( '#wp-admin-bar-site-name' ).children( 'a' ).first(),
+			homeURL = ( <?php echo wp_json_encode( get_home_url() ); ?> || '' ).replace( /^(https?:\/\/)?(www\.)?/, '' );
+
+		$( '#blogname' ).on( 'input', function() {
+			var title = $.trim( $( this ).val() ) || homeURL;
+
+			// Truncate to 40 characters.
+			if ( 40 < title.length ) {
+				title = title.substring( 0, 40 ) + '\u2026';
+			}
+
+			$siteName.text( title );
+		});
+
+		$("input[name='date_format']").click(function(){
+			if ( "date_format_custom_radio" != $(this).attr("id") )
+				$( 'input[name="date_format_custom"]' ).val( $( this ).val() ).closest( 'fieldset' ).find( '.example' ).text( $( this ).parent( 'label' ).children( '.format-i18n' ).text() );
+		});
+		$( 'input[name="date_format_custom"]' ).on( 'click input', function() {
+			$( '#date_format_custom_radio' ).prop( 'checked', true );
+		});
+
+		$("input[name='time_format']").click(function(){
+			if ( "time_format_custom_radio" != $(this).attr("id") )
+				$( 'input[name="time_format_custom"]' ).val( $( this ).val() ).closest( 'fieldset' ).find( '.example' ).text( $( this ).parent( 'label' ).children( '.format-i18n' ).text() );
+		});
+		$( 'input[name="time_format_custom"]' ).on( 'click input', function() {
+			$( '#time_format_custom_radio' ).prop( 'checked', true );
+		});
+		$("input[name='date_format_custom'], input[name='time_format_custom']").change( function() {
+			var format = $( this ),
+				fieldset = format.closest( 'fieldset' ),
+				example = fieldset.find( '.example' ),
+				spinner = fieldset.find( '.spinner' );
+
+			spinner.addClass( 'is-active' );
+
+			$.post( ajaxurl, {
+					action: 'date_format_custom' == format.attr( 'name' ) ? 'date_format' : 'time_format',
+					date : format.val()
+				}, function( d ) { spinner.removeClass( 'is-active' ); example.text( d ); } );
+		});
+
+		var languageSelect = $( '#WPLANG' );
+		$( 'form' ).submit( function() {
+			// Don't show a spinner for English and installed languages,
+			// as there is nothing to download.
+			if ( ! languageSelect.find( 'option:selected' ).data( 'installed' ) ) {
+				$( '#submit', this ).after( '<span class="spinner language-install-spinner is-active" />' );
+			}
+		});
+	});
+</script>
+<?php
+}
+
+/**
+ * Display JavaScript on the page.
+ *
+ * @since 3.5.0
+ */
+function options_reading_add_js() {
+?>
+<script type="text/javascript">
+	jQuery(document).ready(function($){
+		var section = $('#front-static-pages'),
+			staticPage = section.find('input:radio[value="page"]'),
+			selects = section.find('select'),
+			check_disabled = function(){
+				selects.prop( 'disabled', ! staticPage.prop('checked') );
+			};
+		check_disabled();
+ 		section.find('input:radio').change(check_disabled);
+	});
+</script>
+<?php
+}
+
+/**
+ * Render the site charset setting.
+ *
+ * @since 3.5.0
+ */
+function options_reading_blog_charset() {
+	echo '<input name="blog_charset" type="text" id="blog_charset" value="' . esc_attr( get_option( 'blog_charset' ) ) . '" class="regular-text" />';
+	echo '<p class="description">' . __( 'The <a href="https://codex.wordpress.org/Glossary#Character_set">character encoding</a> of your site (UTF-8 is recommended)' ) . '</p>';
+}