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                  "# ERROR in dump_options: unrecognized flag $flag for $key\n";
            }
        }
        $readable_options .= $prefix . $key . $suffix . "\n";
    }
    return $readable_options;
} ## end sub readable_options

sub show_version {
    print STDOUT <<"EOM";
This is perltidy, v$VERSION 

Copyright 2000-2022, Steve Hancock

Perltidy is free software and may be copied under the terms of the GNU
General Public License, which is included in the distribution files.

Complete documentation for perltidy can be found using 'man perltidy'
or on the internet at http://perltidy.sourceforge.net.
EOM
    return;
} ## end sub show_version

sub usage {

    print STDOUT <<EOF;
This is perltidy version $VERSION, a perl script indenter.  Usage:

    perltidy [ options ] file1 file2 file3 ...
            (output goes to file1.tdy, file2.tdy, file3.tdy, ...)
    perltidy [ options ] file1 -o outfile
    perltidy [ options ] file1 -st >outfile
    perltidy [ options ] <infile >outfile

Options have short and long forms. Short forms are shown; see
man pages for long forms.  Note: '=s' indicates a required string,
and '=n' indicates a required integer.