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New Debugging Features:
Search-stack:
(:s "cal") or (:s 'cal) searches the stack for a frame whose function or
special form has a name containing "cal", moves there to display the local
data.
Break-locals:
:bl displays the args and locals of the current function.
(:bl 4) does this for 4 functions.
(si:loc i) accesses the local(i): slot.
the *print-level* and *print-depth* are bound to si::*debug-print-level*
Recall that kcl permits movement to previous frame (:p) and next frame (:n).
These also take numeric args eg. (:p 7) moves up 7 frames.
If functions are interpreted, the arg values are displayed together
with their names. If the functions are using the C stack (ie proclaimed
functions), very little information is available.
Note you must have space < 3 in your optimize proclamation, in order for
the local variable names to be saved by the compiler.
To Do: add setf method for si:loc.
add restart capability from various spots on the stack.
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