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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
+.de Sp \" Vertical space (when we can't use .PP)
+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
+.ft R
+.fi
+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
+.ie n \{\
+. ds C` ""
+. ds C' ""
+'br\}
+.el\{\
+. ds C`
+. ds C'
+'br\}
+.\"
+.\" Escape single quotes in literal strings from groff's Unicode transform.
+.ie \n(.g .ds Aq \(aq
+.el .ds Aq '
+.\"
+.\" If the F register is >0, we'll generate index entries on stderr for
+.\" titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
+.\" entries marked with X<> in POD. Of course, you'll have to process the
+.\" output yourself in some meaningful fashion.
+.\"
+.\" Avoid warning from groff about undefined register 'F'.
+.de IX
+..
+.nr rF 0
+.if \n(.g .if rF .nr rF 1
+.if (\n(rF:(\n(.g==0)) \{\
+. if \nF \{\
+. de IX
+. tm Index:\\$1\t\\n%\t"\\$2"
+..
+. if !\nF==2 \{\
+. nr % 0
+. nr F 2
+. \}
+. \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "Getopt::Std 3pm"
+.TH Getopt::Std 3pm 2023-11-28 "perl v5.38.2" "Perl Programmers Reference Guide"
+.\" For nroff, turn off justification. Always turn off hyphenation; it makes
+.\" way too many mistakes in technical documents.
+.if n .ad l
+.nh
+.SH NAME
+Getopt::Std \- Process single\-character switches with switch clustering
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+.Vb 1
+\& use Getopt::Std;
+\&
+\& getopts(\*(Aqoif:\*(Aq); # \-o & \-i are boolean flags, \-f takes an argument
+\& # Sets $opt_* as a side effect.
+\& getopts(\*(Aqoif:\*(Aq, \e%opts); # options as above. Values in %opts
+\& getopt(\*(AqoDI\*(Aq); # \-o, \-D & \-I take arg.
+\& # Sets $opt_* as a side effect.
+\& getopt(\*(AqoDI\*(Aq, \e%opts); # \-o, \-D & \-I take arg. Values in %opts
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+The \f(CWgetopts()\fR function processes single-character switches with switch
+clustering. Pass one argument which is a string containing all switches to be
+recognized. For each switch found, if an argument is expected and provided,
+\&\f(CWgetopts()\fR sets \f(CW$opt_x\fR (where \f(CW\*(C`x\*(C'\fR is the switch name) to the value of
+the argument. If an argument is expected but none is provided, \f(CW$opt_x\fR is
+set to an undefined value. If a switch does not take an argument, \f(CW$opt_x\fR
+is set to \f(CW1\fR.
+.PP
+Switches which take an argument don't care whether there is a space between
+the switch and the argument. If unspecified switches are found on the
+command-line, the user will be warned that an unknown option was given.
+.PP
+The \f(CWgetopts()\fR function returns true unless an invalid option was found.
+.PP
+The \f(CWgetopt()\fR function is similar, but its argument is a string containing
+all switches that take an argument. If no argument is provided for a switch,
+say, \f(CW\*(C`y\*(C'\fR, the corresponding \f(CW$opt_y\fR will be set to an undefined value.
+Unspecified switches are silently accepted. Use of \f(CWgetopt()\fR is not
+recommended.
+.PP
+Note that, if your code is running under the recommended \f(CW\*(C`use strict
+vars\*(C'\fR pragma, you will need to declare these package variables
+with \f(CW\*(C`our\*(C'\fR:
+.PP
+.Vb 1
+\& our($opt_x, $opt_y);
+.Ve
+.PP
+For those of you who don't like additional global variables being created,
+\&\f(CWgetopt()\fR and \f(CWgetopts()\fR will also accept a hash reference as an optional
+second argument. Hash keys will be \f(CW\*(C`x\*(C'\fR (where \f(CW\*(C`x\*(C'\fR is the switch name) with
+key values the value of the argument or \f(CW1\fR if no argument is specified.
+.PP
+To allow programs to process arguments that look like switches, but aren't,
+both functions will stop processing switches when they see the argument
+\&\f(CW\*(C`\-\-\*(C'\fR. The \f(CW\*(C`\-\-\*(C'\fR will be removed from \f(CW@ARGV\fR.
+.ie n .SH """\-\-help"" and ""\-\-version"""
+.el .SH "\f(CW\-\-help\fP and \f(CW\-\-version\fP"
+.IX Header "--help and --version"
+If \f(CW\*(C`\-\*(C'\fR is not a recognized switch letter, \fBgetopts()\fR supports arguments
+\&\f(CW\*(C`\-\-help\*(C'\fR and \f(CW\*(C`\-\-version\*(C'\fR. If \f(CWmain::HELP_MESSAGE()\fR and/or
+\&\f(CWmain::VERSION_MESSAGE()\fR are defined, they are called; the arguments are
+the output file handle, the name of option-processing package, its version,
+and the switches string. If the subroutines are not defined, an attempt is
+made to generate intelligent messages; for best results, define \f(CW$main::VERSION\fR.
+.PP
+If embedded documentation (in pod format, see perlpod) is detected
+in the script, \f(CW\*(C`\-\-help\*(C'\fR will also show how to access the documentation.
+.PP
+Note that due to excessive paranoia, if \f(CW$Getopt::Std::STANDARD_HELP_VERSION\fR
+isn't true (the default is false), then the messages are printed on STDERR,
+and the processing continues after the messages are printed. This being
+the opposite of the standard-conforming behaviour, it is strongly recommended
+to set \f(CW$Getopt::Std::STANDARD_HELP_VERSION\fR to true.
+.PP
+One can change the output file handle of the messages by setting
+\&\f(CW$Getopt::Std::OUTPUT_HELP_VERSION\fR. One can print the messages of \f(CW\*(C`\-\-help\*(C'\fR
+(without the \f(CW\*(C`Usage:\*(C'\fR line) and \f(CW\*(C`\-\-version\*(C'\fR by calling functions \fBhelp_mess()\fR
+and \fBversion_mess()\fR with the switches string as an argument.