The Alkaline simple regular expressions extend mapping possibilities for search results. Expressions allow, for example, to show different output when no results were found. They also enable such advanced features as inserting a picture for search results from a particular location in the site. In either way, expressions help search templates designers to give their Alkaline users a look and feel of the site being searched. Variables are used in Alkaline specific extended tags and options.
Variable names can contain spaces and special characters.
In general, if the variable is empty, Elsefix is output. Otherwise, Prefix is inserted before and Postfix , after the variable value. Any of the three sections Prefix , Postfix or Elsefix can me omitted. Expression Commands Commands allow to pre-operate on the variable. This means that the variable value will be affected before it is checked for having any data for the Prefix , Postfix or Elsefix output.