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[RFC] try ... finally ... entry enhancements?

Hi,

Would it be a good idea and is it easily to change the try ... finally ...
entry statement to something like:

try
  <try statements>
finally [LIST exit_info_variable]
  <finally statements>
endtry

exit_info_variable value could be
{0}
=>  <try statements> doesn't return nor raise an error

{1, <return value>}
=> <try statements> doesn't raise an error and return  <return value>

{<code>, <message>, <value>, <traceback>}
=> <try statements> raise <code>

Such tool would help to make smarters finally statements (IMHO) and would
also such nifty things as nice traces in-db (right now I have @trace <eval
code to be  traced> but I have no way to show the return/exit values :(

Comments/suggestions are more than welcome.

Thanks.

Richard/Janus
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