better check for arrays in markdown plugin

diff --git a/plugin/markdown/markdown.js b/plugin/markdown/markdown.js
index 4cf0cc583628a1ce9dc54a7d3e948e032cbb6bda..61d698795e0f95d1b635e3f8f7e1196c79ab2ee0 100755 (executable)
--- a/plugin/markdown/markdown.js
+++ b/plugin/markdown/markdown.js
@@ -171,7 +171,7 @@
                // flatten the hierarchical stack, and insert <section data-markdown> tags
                for( var i = 0, len = sectionStack.length; i < len; i++ ) {
                        // vertical
-                       if( sectionStack[i].propertyIsEnumerable( 'length' ) && typeof sectionStack[i].splice === 'function' ) {
+                       if( sectionStack[i] instanceof Array ) {
                                markdownSections += '<section '+ options.attributes +'>';
 
                                sectionStack[i].forEach( function( child ) {