These tasks would need C knowledge, and knowledge of how the interpreter works,
or a willingness to learn.
+=head2 forbid labels with keyword names
+
+Currently C<goto keyword> "computes" the label value:
+
+ $ perl -e 'goto print'
+ Can't find label 1 at -e line 1.
+
+It would be nice to forbid labels with keyword names, to avoid confusion.
+
=head2 error reporting of [$a ; $b]
Using C<;> inside brackets is a syntax error, and we don't propose to change