#!/tools/local/perl5.7.0 -w
use strict;
my $pat  = join('|',@ARGV);

my @m = glob('*.m');
my %e;

foreach my $m (glob('*.m'))
 {
  my ($what) = $m =~ /^(.*)\.m$/;
  open(M,"$what.m") || die "Cannot open $what.m:$!";
  while (<M>)
   {
    if (/^\s*#\s*define\s+(\w*(?:$pat)\w*)\b/o)
     {
      warn "$what: $1\n";
      my $f = $e{$what};
      unless (defined $f)
       {
        open($f,">>$what.exc") || die "Cannot open $what.exc:$!";
        $e{$what} = $f;
       }
      print $f "$1\n";
     }
   }
  close(M);
 }

foreach my $f (values %e)
 {
  close($f);
 }