libpadwalker-perl - 2.3-1+b1 main

PadWalker is a module that allows you to inspect and even modify lexical
variables in the current "lexical pad stack." Perl tracks which variables
are accessible and visible in each lexical scope by keeping a separate
set of variables for each scope. This module looks for a given variable
by traversing that stack, which allows it to alter anything in the stack,
even variables not normally accessible in the current scope.
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In practise, this module is useful for checking anything defined in the full
stack of subroutines that called your function, making it extremely useful
for debugging. It is, however, not recommended for use in production code.