Index: wp-includes/script-loader.php
===================================================================
--- wp-includes/script-loader.php	(revision 11710)
+++ wp-includes/script-loader.php	(working copy)
@@ -81,7 +81,8 @@
 		'enterURL' => __('Enter the URL'),
 		'enterImageURL' => __('Enter the URL of the image'),
 		'enterImageDescription' => __('Enter a description of the image'),
-		'l10n_print_after' => 'try{convertEntities(quicktagsL10n);}catch(e){};'
+		'l10n_print_after' => 'try{convertEntities(quicktagsL10n);}catch(e){};',
+		'comma' => __(',')
 	) );
 
 	$scripts->add( 'colorpicker', "/wp-includes/js/colorpicker$suffix.js", array('prototype'), '3517m' );
Index: wp-admin/admin-ajax.php
===================================================================
--- wp-admin/admin-ajax.php	(revision 11710)
+++ wp-admin/admin-ajax.php	(working copy)
@@ -56,8 +56,9 @@
 	else
 		die('0');
 
-	if ( false !== strpos( $s, ',' ) ) {
-		$s = explode( ',', $s );
+	$comma = __(',');
+	if ( false !== strpos( $s, $comma ) ) {
+		$s = explode( $comma, $s );
 		$s = $s[count( $s ) - 1];
 	}
 	$s = trim( $s );
Index: wp-admin/js/post.dev.js
===================================================================
--- wp-admin/js/post.dev.js	(revision 11710)
+++ wp-admin/js/post.dev.js	(working copy)
@@ -10,7 +10,8 @@
 }
 
 function new_tag_remove_tag() {
-	var id = jQuery( this ).attr( 'id' ), num = id.split('-check-num-')[1], taxbox = jQuery(this).parents('.tagsdiv'), current_tags = taxbox.find( '.the-tags' ).val().split(','), new_tags = [];
+	var c = quicktagsL10n.comma;
+	var id = jQuery( this ).attr( 'id' ), num = id.split('-check-num-')[1], taxbox = jQuery(this).parents('.tagsdiv'), current_tags = taxbox.find( '.the-tags' ).val().split(c), new_tags = [];
 	delete current_tags[num];
 
 	jQuery.each( current_tags, function(key, val) {
@@ -20,7 +21,7 @@
 		}
 	});
 
-	taxbox.find('.the-tags').val( new_tags.join(',').replace(/\s*,+\s*/, ',').replace(/,+/, ',').replace(/,+\s+,+/, ',').replace(/,+\s*$/, '').replace(/^\s*,+/, '') );
+	taxbox.find('.the-tags').val(eval("new_tags.join(quicktagsL10n.comma).replace(/\s+,+\s*/g, ',').replace(/,+/g, ',').replace(/,+\s+,+/g, ',').replace(/,+\s*$/g, '').replace(/^\s*,+/g, '')".replace(/','/g, "'"+c+"'").replace(/,[^ ]/g, c)));
 
 	tag_update_quickclicks(taxbox);
 	return false;
@@ -30,7 +31,7 @@
 	if ( jQuery(taxbox).find('.the-tags').length == 0 )
 		return;
 
-	var current_tags = jQuery(taxbox).find('.the-tags').val().split(',');
+	var current_tags = jQuery(taxbox).find('.the-tags').val().split(quicktagsL10n.comma);
 	jQuery(taxbox).find('.tagchecklist').empty();
 	shown = false;
 
@@ -52,6 +53,7 @@
 function tag_flush_to_text(id, a) {
 	a = a || false;
 	var taxbox, text, tags, newtags;
+	var c = quicktagsL10n.comma;
 
 	taxbox = jQuery('#'+id);
 	text = a ? jQuery(a).text() : taxbox.find('input.newtag').val();
@@ -61,11 +63,11 @@
 		return false;
 
 	tags = taxbox.find('.the-tags').val();
-	newtags = tags ? tags + ',' + text : text;
+	newtags = tags ? tags + c + text : text;
 
 	// massage
-	newtags = newtags.replace(/\s+,+\s*/g, ',').replace(/,+/g, ',').replace(/,+\s+,+/g, ',').replace(/,+\s*$/g, '').replace(/^\s*,+/g, '');
-	newtags = array_unique_noempty(newtags.split(',')).join(',');
+	newtags = eval("newtags.replace(/\s+,+\s*/g, ',').replace(/,+/g, ',').replace(/,+\s+,+/g, ',').replace(/,+\s*$/g, '').replace(/^\s*,+/g, '')".replace(/','/g, "'"+c+"'").replace(/,[^ ]/g, c));
+	newtags = array_unique_noempty(newtags.split(c)).join(c);
 	taxbox.find('.the-tags').val(newtags);
 	tag_update_quickclicks(taxbox);