Revert "debugger: don't allow users to input non-valid commands"
Revert "debugger: don't allow users to input non-valid commands"

breaks 'print' command

This reverts commit 37d529f818aacd1146b1d927b3251bbefcea389f.

dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node,dreamllq/node