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lib/POD2/RU/perldebug.pod  view on Meta::CPAN

X<debugger command, X>

Same as C<V currentpackage [vars]>.

=item y [level [vars]]
X<debugger command, y>

Display all (or some) lexical variables (mnemonic: C<mY> variables)
in the current scope or I<level> scopes higher.  You can limit the
variables that you see with I<vars> which works exactly as it does
for the C<V> and C<X> commands.  Requires the C<PadWalker> module
version 0.08 or higher; will warn if this isn't installed.  Output
is pretty-printed in the same style as for C<V> and the format is
controlled by the same options.

=item T
X<debugger command, T> X<backtrace> X<stack, backtrace>

Produce a stack backtrace.  See below for details on its output.

=item s [expr]

lib/POD2/RU/perldebug.pod  view on Meta::CPAN

As shipped, the only command-line history supplied is a simplistic one
that checks for leading exclamation points.  However, if you install
the Term::ReadKey and Term::ReadLine modules from CPAN (such as
Term::ReadLine::Gnu, Term::ReadLine::Perl, ...) you will
have full editing capabilities much like those GNU I<readline>(3) provides.
Look for these in the F<modules/by-module/Term> directory on CPAN.
These do not support normal B<vi> command-line editing, however.

A rudimentary command-line completion is also available, including
lexical variables in the current scope if the C<PadWalker> module
is installed.

Without Readline support you may see the symbols "^[[A", "^[[C", "^[[B",
"^[[D"", "^H", ... when using the arrow keys and/or the backspace key.

=head2 Editor Support for Debugging

If you have the FSF's version of B<emacs> installed on your system,
it can interact with the Perl debugger to provide an integrated
software development environment reminiscent of its interactions