[m-dev.] debugger command set

[Zoltan Somogyi]

> 	- I would prefer `alias p print' rather than the current
> 	  `alias p print *'; I find myself forever typing `p 1'.

Done.

> 	- If you type the wrong number of arguments, it would be
> 	  better for the debugger to just say 
> 
> 	  	mdb: print: usage error -- type `help print' for help
> 	
> 	  rather than for it to just print the help message, as it
> 	  does currently.
> 	  The behaviour of printing the help message without any
> 	  indication of why it was printed is confusing, and
> 	  it's annoying for a simple typo to cause so much output,
> 	  since it scrolls all the useful stuff that you printed
> 	  out previously off the screen.

I am in the process of doing this.

> 	- A command for printing the type of a variable would be nice.
> 	  In fact, the `v' (vars) command which lists them could do that.

This will have to wait until after the release.

> 	- It would be helpful if the `up', `down', and `level' commands could
> 	  print out a trace line showing where you are, like they do in gdb.

I will try to do this before the release.

Zoltan.