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% perl -MO=Concise -e 'print "Hello, $world!"' a <@> leave[1 ref] vKP/REFC ->(end) ... - <1> ex-rv2sv sK/1 ->6 5 <#> gvsv[*world] s ->6 7 <$> const[PV "!"] s ->8
% pugs -c -e 'print "Hello, $world!"' { Statements ... ,"<interactive>" (line 1, column 1) )] }