C
    filter remove_matches ^\s*//
    filter call_regexp_common C
    filter remove_inline //.*$
    extension c
    extension ec
    extension pgc
    3rd_gen_scale 0.77
    end_of_line_continuation \\$
C Header
    filter remove_matches ^\s*//
    filter call_regexp_common C
    filter remove_inline //.*$
    extension h
    3rd_gen_scale 1.00
    end_of_line_continuation \\$
C++
    filter remove_matches ^\s*//
    filter remove_inline //.*$
    filter call_regexp_common C
    extension C
    extension cc
    extension cpp
    extension cxx
    extension pcc
    3rd_gen_scale 1.51
    end_of_line_continuation \\$
C++ Header
    filter remove_matches ^\s*//
    filter call_regexp_common C
    filter remove_inline //.*$
    extension H
    extension hh
    extension hpp
    extension hxx
    3rd_gen_scale 1.51
    end_of_line_continuation \\$
Fortran 77
    filter remove_f77_comments
    filter remove_inline \!.*$
    extension F
    extension F77
    extension f
    extension f77
    extension pfo
    3rd_gen_scale 0.75
Fortran 90
    filter remove_f77_comments
    filter remove_f90_comments
    filter remove_inline \!.*$
    extension F90
    extension f90
    3rd_gen_scale 1.00
Fortran 95
    filter remove_f77_comments
    filter remove_f90_comments
    filter remove_inline \!.*$
    extension F95
    extension f95
    3rd_gen_scale 1.13
Fortran 2003
    filter remove_f77_comments
    filter remove_f90_comments
    filter remove_inline \!.*$
    extension F03
    extension f03
    3rd_gen_scale 1.13
Java
    filter remove_matches ^\s*//
    filter call_regexp_common C
    filter remove_inline //.*$
    extension java
    3rd_gen_scale 1.36
    end_of_line_continuation \\$