[mkgmap-dev] tag value within regular expression

Hi, Section 4.2.3 of the style manual shows how to compare the values of two tags, but does not indicate whether it is possible to use tag values within a regular expression. Is this possible? If the name of a highway is contained within the tag I use to contain the route name, I would like to delete the name tag. Currently I do this if the route name is the same as the highway name, but the route name can contain more than one name. Cheers, Mike