whole_func_string: function getRangeForPrevItemInCSS(rule, offset, selRange) {
  		var tree = require('cssEditTree').parse(rule, {
  			offset: offset
  		});
  		
  		var curRange = matchedRangeForCSSProperty(tree, selRange, true);
  		
  		if (!curRange) {
  			// no matched property, try to match selector
  			var range = tree.nameRange(true);
  			if (selRange.start > range.start) {
  				return range;
  			}
  		}
  		
  		return curRange;
  	}
func_code_string: function getRangeForPrevItemInCSS(rule, offset, selRange) {
  		var tree = require('cssEditTree').parse(rule, {
  			offset: offset
  		});
  		
  		var curRange = matchedRangeForCSSProperty(tree, selRange, true);
  		
  		if (!curRange) {
  			// no matched property, try to match selector
  			var range = tree.nameRange(true);
  			if (selRange.start > range.start) {
  				return range;
  			}
  		}
  		
  		return curRange;
  	}
func_documentation_string: Returns range for item to be selected in CSS before current caret
  (selection) position
  @param {String} rule CSS rule declaration
  @param {Number} offset Rule's position index inside content
  @param {Range} selRange Selection range
  @return {Range} Returns range if previous item was found, <code>null</code> otherwise