NAME
    Filename::Backup - Check whether filename indicates being a backup file

VERSION
    This document describes version 0.04 of Filename::Backup (from Perl
    distribution Filename-Backup), released on 2023-12-15.

SYNOPSIS
     use Filename::Backup qw(check_backup_filename);
     my $res = check_backup_filename(filename => "foo.txt~");
     if ($res) {
         printf "Filename indicates a backup, original name: %s\n",
             $res->{original_filename};
     } else {
         print "Filename does not indicate a backup\n";
     }

DESCRIPTION
FUNCTIONS
  check_backup_filename
    Usage:

     check_backup_filename(%args) -> bool|hash

    Check whether filename indicates being a backup file.

    Examples:

    *   Example #1:

         check_backup_filename(filename => "foo.bar"); # -> 0

    *   Example #2:

         check_backup_filename(filename => "foo.bak"); # -> { original_filename => "foo" }

    *   Example #3:

         check_backup_filename(filename => "foo.Bak", ignore_case => 0); # -> 0

    This function is not exported by default, but exportable.

    Arguments ('*' denotes required arguments):

    *   filename* => *str*

        (No description)

    *   ignore_case => *bool* (default: 1)

        Whether to match case-insensitively.

    Return value: (bool|hash)

    Return false if not detected as backup name. Otherwise return a hash,
    which may contain these keys: "original_filename". In the future there
    will be extra information returned, e.g. editor name (if filename
    indicates backup from certain backup program), date (if filename
    contains date information), and so on.

HOMEPAGE
    Please visit the project's homepage at
    <https://metacpan.org/release/Filename-Backup>.

SOURCE
    Source repository is at
    <https://github.com/perlancar/perl-Filename-Backup>.

SEE ALSO
    Filename::Archive

    Filename::Compressed

AUTHOR
    perlancar <perlancar@cpan.org>

CONTRIBUTING
    To contribute, you can send patches by email/via RT, or send pull
    requests on GitHub.

    Most of the time, you don't need to build the distribution yourself. You
    can simply modify the code, then test via:

     % prove -l

    If you want to build the distribution (e.g. to try to install it locally
    on your system), you can install Dist::Zilla,
    Dist::Zilla::PluginBundle::Author::PERLANCAR,
    Pod::Weaver::PluginBundle::Author::PERLANCAR, and sometimes one or two
    other Dist::Zilla- and/or Pod::Weaver plugins. Any additional steps
    required beyond that are considered a bug and can be reported to me.

COPYRIGHT AND LICENSE
    This software is copyright (c) 2023, 2016, 2015 by perlancar
    <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.

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

    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.