NAME

       Regexp::Stringify - Stringify a Regexp object

VERSION

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

SYNOPSIS

       Assuming this runs on Perl 5.14 or newer.

        use Regexp::Stringify qw(stringify_regexp);
        $str = stringify_regexp(regexp=>qr/a/i);                       # '(^i:a)'
        $str = stringify_regexp(regexp=>qr/a/i, with_qr=>1);           # 'qr(a)i'
        $str = stringify_regexp(regexp=>qr/a/i, plver=>5.010);         # '(?:(?i-)a)'
        $str = stringify_regexp(regexp=>qr/a/ui, plver=>5.010);        # '(?:(?i-)a)'

FUNCTIONS

   stringify_regexp(%args) -> str
       Stringify a Regexp object.

       This routine is an alternative to Perl's default stringification of Regexp object
       (i.e.:"$re") and has some features/options, e.g.: producing regexp string that is
       compatible with certain perl versions.

       If given a string (or other non-Regexp object), will return it as-is.

       This function is not exported by default, but exportable.

       Arguments ('*' denotes required arguments):

       •   plver => str

           Target perl version.

           Try to produce a regexp object compatible with a certain perl version (should at least
           be >= 5.10).

           For example, in perl 5.14 regex stringification changes, e.g. "qr/hlagh/i" would
           previously be stringified as "(?i-xsm:hlagh)", but now it's stringified as
           "(?^i:hlagh)". If you set "plver" to 5.10 or 5.12, then this routine will still
           produce the former. It will also ignore regexp modifiers that are introduced in newer
           perls.

           Note that not all regexp objects are translatable to older perls, e.g. if they contain
           constructs not known to older perls like "(?^...)" before perl 5.14.

       •   regexp* => re

       •   with_qr => bool

           If you set this to 1, then "qr/a/i" will be stringified as 'qr/a/i' instead as
           '(?^i:a)'. The resulting string can then be eval-ed to recreate the Regexp object.

       Return value:  (str)

HOMEPAGE

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

SOURCE

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

BUGS

       Please report any bugs or feature requests on the bugtracker website
       <https://rt.cpan.org/Public/Dist/Display.html?Name=Regexp-Stringify>

       When submitting a bug or request, please include a test-file or a patch to an existing
       test-file that illustrates the bug or desired feature.

AUTHOR

       perlancar <perlancar@cpan.org>

COPYRIGHT AND LICENSE

       This software is copyright (c) 2016 by perlancar@cpan.org.

       This is free software; you can redistribute it and/or modify it under the same terms as
       the Perl 5 programming language system itself.