use utf8; my $string_with_strange_delimiters = q«a»; my $printed = 0; label: print $string_with_strange_delimiters; $printed = 1; # With cperl-extra-delimiters-mode=on the previous lines are a label # and a print statement. This line here is a comment. Without # cperl-extra-delimiters-mode, all this is part of the variable # declaration. # Perl will print hist an "a" if called like this: # perl -M5.040 extra.pl # ...and, if called without that -M switch, # perl extra.pl # will print everything until here: «; $printed or print $string_with_strange_delimiters; my $sanity = "eventually recovered.";