Note the side-effect that "\" ceases to be special. 
my $baz = 'interpolated';

print <<__EOI__;
Double quoted or unquoted
$baz
foo\\bar
__EOI__

print("\n");

print <<'__EOI__';
Single quoted
$baz
foo\\bar
__EOI__

[download]
Double quoted or unquoted
interpolated
foo\bar

Single quoted
$baz
foo\\bar

[download]

In reply to Re^2: here-doc question by ikegami
in thread heredoc interpolation by avo

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