regex wildcard for refresh_pattern

["Ritter, Nicholas" <Nicholas.Ritter@xxxxxxxxxxxxxx>]

Is the regex wildcard for refresh_pattern a '.*' or just a '.'.

I want to apply a pattern match to some specific jar files that fit a
pattern of 'name.jar-serialnumber.zip'


Would the correct pattern match then be 'refresh_pattern -i name.jar.*'
?