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perl -e ' use constant DEBUG =>0; use O qw( Concise -exec); print "tot +o" if DEBUG; print "toto" if DEBUG' 1 <0> enter 2 <;> nextstate(main 1 -e:1) v 3 <;> nextstate(main 1 -e:1) v 4 <@> leave[t1] vKP/REFC