# Exim filter if $h_subject: is "This is a very long string which isn't likely to occur when\ testing for a fixed string, but might happen if a long and complicated\ regular expression and/or lookup gets used in somebody's filter file.\ Originally the limit was 256 characters, but now we have increased it to\ a larger figure. This should exceed the old limit and check that the new\ limit is in place." then testprint "Won't happen" endif