wilderness - 11:05 pm on Feb 21, 2012 (gmt 0)
Perhaps another may clean up the syntax for you.
Don't use .* at the beginning or in the middle of a RegEx pattern. It is uncomprehensibly inefficient in its usage of server processor cycles.
[F,L] can be replaced by [F]. It's one of the few occasions when 'L' can be omitted. Another is when using [G].
Those lines (and the accompanying other lines) were in place and functioning for more than ten years and never caused any issue while functioning fine.
FWIW my reference for "perhaps another" was in regard to the
I believe the two is not necessary because the RU is specific rather than random characters within a range (i. e., [a-z] ).