code: function trimInlineElementsOnLeftSideOfBlock(block) {
  				var node = block, firstChilds = [], i;
  
  				// Find inner most first child ex: <p><i><b>*</b></i></p>
  				while (node = node.firstChild) {
  					if (dom.isBlock(node)) {
  						return;
  					}
  
  					if (node.nodeType == 1 && !nonEmptyElementsMap[node.nodeName.toLowerCase()]) {
  						firstChilds.push(node);
  					}
  				}
  
  				i = firstChilds.length;
  				while (i--) {
  					node = firstChilds[i];
  					if (!node.hasChildNodes() || (node.firstChild == node.lastChild && node.firstChild.nodeValue === '')) {
  						dom.remove(node);
  					} else {
  						// Remove <a> </a> see #5381
  						if (node.nodeName == "A" && (node.innerText || node.textContent) === ' ') {
  							dom.remove(node);
  						}
  					}
  				}
  			}
docs: Remove the first empty inline element of the block so this: <p><b><em></em></b>x</p> becomes this: <p>x</p>