js/tinymce/tinymce.jquery.js
function (dom, node) {
      return node &&
        dom.isBlock(node) &&
        !/^(TD|TH|CAPTION|FORM)$/.test(node.nodeName) &&
        !/^(fixed|absolute)/i.test(node.style.position) &&
        dom.getContentEditable(node) !== "true";
    }
function (dom, node) {
      return node &&
        dom.isBlock(node) &&
        !/^(TD|TH|CAPTION|FORM)$/.test(node.nodeName) &&
        !/^(fixed|absolute)/i.test(node.style.position) &&
        dom.getContentEditable(node) !== "true";
    }
function ( dom , node ) { return node && dom . isBlock ( node ) && ! / ^(TD|TH|CAPTION|FORM)$ / . test ( node . nodeName ) && ! / ^(fixed|absolute) / i . test ( node . style . position ) && dom . getContentEditable ( node ) !== "true" ; }
Returns true if the block can be split into two blocks or not
Returns true if the block can be split into two blocks or not