Checking from an external file?

People,

Part of my .mailfilter looks like this:

# .spam ^Subject: Uppper {{{3
if ( /^Subject:  INQ /:h \
     || /^Subject:  \(/:h \
     || /^Subject: (Top|Luxury) Watches/:h \
     || /^Subject: 180/:h \
     || /^Subject: 4mJ/:h \
     || /^Subject: =?UTF/:h \
     || /^Subject: ? eat this.../:h \
     || /^Subject: \*\*/:h \
     || /^Subject: \.You/:h \
     || /^Subject: \[CONFINDENTIAL\]/:h \
     || /^Subject: \[Mayo Clinic Research\]/:h \
     || /^Subject: A .*(reverse|Daily).*(payment|Sprinkle)/:h \
     || /^Subject: Action Required/:h \
     || /^Subject: ACH/:h \
     || /^Subject: ACTIVEZ/:h \

etc.

Is it possible to have a separate file with all the lines in so that 
section of .mailfilter could be reduced to something like:

# .spam ^Subject: Uppper {{{3
if ( /^Subject:  "/home/phr/Maildir/spam_upper.txt" /:h )

?

Thanks,

Phil.

-- 
Philip Rhoades

PO Box 896
Cowra  NSW  2794
Australia
E-mail:  [email protected]