We have an analyzer that leaves "." as is in the case of numeric fields (i.e. 1.4.5), but some other fields (i.e. Abstract) applying this analyzer makes us losing matching documents if Abstract contains words with "." with no space (i.e. allergy.Studies). leaving "." in Abstract field for this case makes us can't run querystring on Abstract:"allergy" nor Abstract: "studies" because allergy.studies indexed with "." What analyzer can be used to leave "." as is in numeric field or other valid fields (i.e. author name, URL,...) but in other fields like Abstract replace "." with space?