main::go(docopy.pl:61):                       push( @global_files, recurse_dir( $filename ) );
  DB<4> n
File::Glob::csh_glob(/usr/local/lib/perl5/5.6.1/sun4-solaris/File/Glob.pm:175):
175:        if (wantarray) {
99 levels deep in subroutine calls!