How has support for here-docs changed across recent Perl versions?

Perl has evolved over the years, with various changes in syntax and features, including how here-docs are handled. Here-docs, or heredocs, provide a way to define multi-line strings. As Perl versions have progressed, support for several delimiters, including the ability to use a variable to define the end of a here-doc, has been enhanced.

Perl, here-docs, heredocs, multi-line strings, Perl versions, syntax changes


        # Example of a here-doc in Perl
        my $str = <<'EOF';
        This is an example of a here-doc in Perl.
        It can span multiple lines without using concatenation.
        EOF
        
        print $str;