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.\"
.IX Title "Regexp::Common::list 3pm"
.TH Regexp::Common::list 3pm "2022-10-15" "perl v5.34.0" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH "NAME"
Regexp::Common::list \-\- provide regexes for lists
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\&    use Regexp::Common qw /list/;
\&
\&    while (<>) {
\&        /$RE{list}{\-pat => \*(Aq\ew+\*(Aq}/          and print "List of words";
\&        /$RE{list}{\-pat => $RE{num}{real}}/ and print "List of numbers";
\&    }
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Please consult the manual of Regexp::Common for a general description
of the works of this interface.
.PP
Do not use this module directly, but load it via \fIRegexp::Common\fR.
.ie n .SS "$RE{list}{\-pat}{\-sep}{\-lastsep}"
.el .SS "\f(CW$RE{list}{\-pat}{\-sep}{\-lastsep}\fP"
.IX Subsection "$RE{list}{-pat}{-sep}{-lastsep}"
Returns a pattern matching a list of (at least two) substrings.
.PP
If \f(CW\*(C`\-pat=\f(CIP\f(CW\*(C'\fR is specified, it defines the pattern for each substring
in the list. By default, \fIP\fR is \f(CW\*(C`qr/.*?\eS/\*(C'\fR. In Regexp::Common 0.02
or earlier, the default pattern was \f(CW\*(C`qr/.*?/\*(C'\fR. But that will match
a single space, causing unintended parsing of \f(CW\*(C`a, b, and c\*(C'\fR as a
list of four elements instead of 3 (with \f(CW\*(C`\-word\*(C'\fR being \f(CW\*(C`(?:and)\*(C'\fR).
One consequence is that a list of the form \*(L"a,,b\*(R" will no longer be
parsed. Use the pattern \f(CW\*(C`qr /.*?/\*(C'\fR to be able to parse this, but see
the previous remark.
.PP
If \f(CW\*(C`\-sep=\f(CIP\f(CW\*(C'\fR is specified, it defines the pattern \fIP\fR to be used as
a separator between each pair of substrings in the list, except the final two.
By default \fIP\fR is \f(CW\*(C`qr/\es*,\es*/\*(C'\fR.
.PP
If \f(CW\*(C`\-lastsep=\f(CIP\f(CW\*(C'\fR is specified, it defines the pattern \fIP\fR to be used as
a separator between the final two substrings in the list.
By default \fIP\fR is the same as the pattern specified by the \f(CW\*(C`\-sep\*(C'\fR flag.
.PP
For example:
.PP
.Vb 4
\&      $RE{list}{\-pat=>\*(Aq\ew+\*(Aq}                # match a list of word chars
\&      $RE{list}{\-pat=>$RE{num}{real}}       # match a list of numbers
\&      $RE{list}{\-sep=>"\et"}                 # match a tab\-separated list
\&      $RE{list}{\-lastsep=>\*(Aq,\es+and\es+\*(Aq}     # match a proper English list
.Ve
.PP
Under \f(CW\*(C`\-keep\*(C'\fR:
.ie n .IP "$1" 4
.el .IP "\f(CW$1\fR" 4
.IX Item "$1"
captures the entire list
.ie n .IP "$2" 4
.el .IP "\f(CW$2\fR" 4
.IX Item "$2"
captures the last separator
.ie n .SS "$RE{list}{conj}{\-word=\f(CIPATTERN\fP}"
.el .SS "\f(CW$RE{list}{conj}{\-word=\fP\f(CIPATTERN\fP\f(CW}\fP"
.IX Subsection "$RE{list}{conj}{-word=PATTERN}"
An alias for \f(CW$RE{list}{\-lastsep=>\*(Aq\es*,?\es*\f(CIPATTERN\f(CW\es*\*(Aq}\fR
.PP
If \f(CW\*(C`\-word\*(C'\fR is not specified, the default pattern is \f(CW\*(C`qr/and|or/\*(C'\fR.
.PP
For example:
.PP
.Vb 2
\&      $RE{list}{conj}{\-word=>\*(Aqet\*(Aq}        # match Jean, Paul, et Satre
\&      $RE{list}{conj}{\-word=>\*(Aqoder\*(Aq}      # match Bonn, Koln oder Hamburg
.Ve
.ie n .SS "$RE{list}{and}"
.el .SS "\f(CW$RE{list}{and}\fP"
.IX Subsection "$RE{list}{and}"
An alias for \f(CW$RE{list}{conj}{\-word=>\*(Aqand\*(Aq}\fR
.ie n .SS "$RE{list}{or}"
.el .SS "\f(CW$RE{list}{or}\fP"
.IX Subsection "$RE{list}{or}"
An alias for \f(CW$RE{list}{conj}{\-word=>\*(Aqor\*(Aq}\fR
.SH "SEE ALSO"
.IX Header "SEE ALSO"
Regexp::Common for a general description of how to use this interface.
.SH "AUTHOR"
.IX Header "AUTHOR"
Damian Conway (damian@conway.org)
.SH "MAINTENANCE"
.IX Header "MAINTENANCE"
This package is maintained by Abigail (\fIregexp\-common@abigail.be\fR).
.SH "BUGS AND IRRITATIONS"
.IX Header "BUGS AND IRRITATIONS"
Bound to be plenty.
.PP
For a start, there are many common regexes missing.
Send them in to \fIregexp\-common@abigail.be\fR.
.SH "LICENSE and COPYRIGHT"
.IX Header "LICENSE and COPYRIGHT"
This software is Copyright (c) 2001 \- 2017, Damian Conway and Abigail.
.PP
This module is free software, and maybe used under any of the following
licenses:
.PP
.Vb 4
\& 1) The Perl Artistic License.     See the file COPYRIGHT.AL.
\& 2) The Perl Artistic License 2.0. See the file COPYRIGHT.AL2.
\& 3) The BSD License.               See the file COPYRIGHT.BSD.
\& 4) The MIT License.               See the file COPYRIGHT.MIT.
.Ve