FAQ: Regular Expression Case-sensitivity

Are Sawmill's regular expressions case-sensitive?

Short Answer

Yes.

Long Answer

Yes -- the regular expression Dog matches Dog, but not dog or DOG. If you need to match case-insensitively in a log filter, you can convert the field to lowercase first (copy it to another temporary field if you don't want to modify the original), or you can explicitly list upper and lower case values for every letter, e.g. [Dd][Oo][Gg] matches "dog" case-insensitively.