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use strict; use warnings; use Sub::Uplevel; # subroutine A calls subroutine B with uplevel(), so when # subroutine B queries caller(), it gets main as the caller (just # like subroutine A) instead of getting subroutine A sub sub_a { print "Entering Subroutine A\n"; print "caller() says: ", join( ", ", (caller())[0 .. 2] ), "\n"; print "Calling B with uplevel\n"; uplevel 1, \&sub_b; } sub sub_b { print "Entering Subroutine B\n"; print "caller() says: ", join( ", ", (caller())[0 .. 2] ), "\n"; } sub_a();
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