Select Code to Download

my @typedefs = qw(...sorted list of typedefs, common ones first...);
my @regexes = map { qr{$_} } @typedefs;
...
    last REGEX; # Stop looking
  }
}

my @typedefs = qw(...sorted list of typedefs, common ones first...);
# Make a big '(a|b|c|...)' regex str
...
if ($line =~ $regex) {
    # found typedef so do work
}