function findAbbreviation(editor) {
						var r = range(editor.getSelectionRange());
						var content = String(editor.getContent());
						if (r.length()) {
							// abbreviation is selected by user
							return r.substring(content);
						}

						// search for new abbreviation from current caret position
						var curLine = editor.getCurrentLineRange();
						return actionUtils.extractAbbreviation(content.substring(curLine.start, r.start));
					}
Search for abbreviation in editor from current caret position
@param {IEmmetEditor} editor Editor instance
@return {String}