1Regexp::Stringify(3)  User Contributed Perl Documentation Regexp::Stringify(3)
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NAME

6       Regexp::Stringify - Stringify a Regexp object
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VERSION

9       This document describes version 0.06 of Regexp::Stringify (from Perl
10       distribution Regexp-Stringify), released on 2016-10-29.
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SYNOPSIS

13       Assuming this runs on Perl 5.14 or newer.
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15        use Regexp::Stringify qw(stringify_regexp);
16        $str = stringify_regexp(regexp=>qr/a/i);                       # '(^i:a)'
17        $str = stringify_regexp(regexp=>qr/a/i, with_qr=>1);           # 'qr(a)i'
18        $str = stringify_regexp(regexp=>qr/a/i, plver=>5.010);         # '(?:(?i-)a)'
19        $str = stringify_regexp(regexp=>qr/a/ui, plver=>5.010);        # '(?:(?i-)a)'
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FUNCTIONS

22   stringify_regexp(%args) -> str
23       Stringify a Regexp object.
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25       This routine is an alternative to Perl's default stringification of
26       Regexp object (i.e.:"$re") and has some features/options, e.g.:
27       producing regexp string that is compatible with certain perl versions.
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29       If given a string (or other non-Regexp object), will return it as-is.
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31       This function is not exported by default, but exportable.
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33       Arguments ('*' denotes required arguments):
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35       •   plver => str
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37           Target perl version.
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39           Try to produce a regexp object compatible with a certain perl
40           version (should at least be >= 5.10).
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42           For example, in perl 5.14 regex stringification changes, e.g.
43           "qr/hlagh/i" would previously be stringified as "(?i-xsm:hlagh)",
44           but now it's stringified as "(?^i:hlagh)". If you set "plver" to
45           5.10 or 5.12, then this routine will still produce the former. It
46           will also ignore regexp modifiers that are introduced in newer
47           perls.
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49           Note that not all regexp objects are translatable to older perls,
50           e.g. if they contain constructs not known to older perls like
51           "(?^...)" before perl 5.14.
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53       •   regexp* => re
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55       •   with_qr => bool
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57           If you set this to 1, then "qr/a/i" will be stringified as 'qr/a/i'
58           instead as '(?^i:a)'. The resulting string can then be eval-ed to
59           recreate the Regexp object.
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61       Return value:  (str)
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HOMEPAGE

64       Please visit the project's homepage at
65       <https://metacpan.org/release/Regexp-Stringify>.
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SOURCE

68       Source repository is at
69       <https://github.com/perlancar/perl-Regexp-Stringify>.
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BUGS

72       Please report any bugs or feature requests on the bugtracker website
73       <https://rt.cpan.org/Public/Dist/Display.html?Name=Regexp-Stringify>
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75       When submitting a bug or request, please include a test-file or a patch
76       to an existing test-file that illustrates the bug or desired feature.
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AUTHOR

79       perlancar <perlancar@cpan.org>
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82       This software is copyright (c) 2016 by perlancar@cpan.org.
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84       This is free software; you can redistribute it and/or modify it under
85       the same terms as the Perl 5 programming language system itself.
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89perl v5.32.1                      2021-01-27              Regexp::Stringify(3)
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