Text::Trim - remove leading and/or trailing whitespace from strings

       Terrence Brannon <metaperl@gmail.com> for bringing my attention to String::Strip and suggesting
       documentation changes.

MattLawrence <mattlaw@cpan.org> - Original author and maintainer

       RyanThompson <rjt@cpan.org> - Co-maintainer, miscellaneous fixes

voidcontext
       Functions called in void context change their arguments in-place

           trim(@strings); # All strings in @strings are trimmed in-place

           ltrim($text);   # remove leading whitespace on $text

           rtrim;          # remove trailing whitespace on $_

       No changes are made to arguments in non-void contexts.

   listcontext
       Values passed in are changed and returned without affecting the originals.

           @result = trim(@strings);    # @strings is unchanged

           @result = rtrim;             # @result contains rtrimmed $_

           ($result) = ltrim(@strings); # like $result = ltrim($strings[0]);

   scalarcontext
       As list context but multiple arguments are stringified before being returned.  Single arguments are
       unaffected.  This means that under these circumstances, the value of $" ($LIST_SEPARATOR) is used to join
       the values. If you don't want this, make sure you only use single arguments when calling in scalar
       context.

           @strings = ("\thello\n", "\tthere\n");
           $trimmed = trim(@strings);
           # $trimmed = "hello there"

           local $" = ', ';
           $trimmed = trim(@strings);
           # Now $trimmed = "hello, there"

           $trimmed = rtrim;
           # $trimmed = $_ minus trailing whitespace

   Undefinedvalues
       If any of the functions are called with undefined values, the behaviour is in general to pass them
       through unchanged. When stringifying a list (calling in scalar context with multiple arguments) undefined
       elements are excluded, but if all elements are undefined then the return value is also undefined.

           $foo = trim(undef);        # $foo is undefined
           $foo = trim(undef, undef); # $foo is undefined
           @foo = trim(undef, undef); # @foo contains 2 undefined values
           trim(@foo)                 # @foo still contains 2 undefined values
           $foo = trim('', undef);    # $foo is ''

       This module provides functions for removing leading and/or trailing whitespace from strings. It is
       basically a wrapper around some simple regexes with a flexible context-based interface.

       All functions are exported by default.

trim
       Removes leading and trailing whitespace from all arguments, or $_ if none are provided.

   rtrim
       Like "trim()" but removes only trailing (right) whitespace.

   ltrim
       Like "trim()" but removes only leading (left) whitespace.

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

       <http://dev.perl.org/licenses/artistic.html>

perl v5.36.0                                       2022-11-20                                    Text::Trim(3pm)

       Text::Trim - remove leading and/or trailing whitespace from strings

       Brent B. Powers' String::Strip performs a similar function in XS.

       <https://github.com/rjt-pl/Text-Trim/issues>: Bug reports and feature requests

       <https://github.com/rjt-pl/Text-Trim.git>: Source repository

           use Text::Trim;

           $text = "\timportant data\n";
           $data = trim $text;
           # now $data contains "important data" and $text is unchanged

           # or:
           trim $text; # work in-place, $text now contains "important data"

           @lines = <STDIN>;
           rtrim @lines; # remove trailing whitespace from all lines

           # Alternatively:
           @lines = rtrim <STDIN>;

           # Or even:
           while (<STDIN>) {
               trim; # Change $_ in place
               # ...
           }

       Because this module is implemented using Perl regular expressions, it is capable of recognising and
       removing unicode whitespace characters (such as non-breaking spaces) from scalars with the utf8 flag on.
       See Encode for details about the utf8 flag.

       Note that this only applies in the case of perl versions after 5.8.0 or so.

       version 1.04