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SCL condition system

To: Charest@AI-SUN.jpl.nasa.gov (Len Charest)
Subject: SCL condition system
From: MMcM@TITANIA.Oberon.Dialnet.Symbolics.COM (Mike McMahon)
Date: Thu, 28 Jun 1990 14:04:00 -0400
Cc: slug@Warbucks.AI.SRI.COM
In-reply-to: <19900628020549.1.CHAREST@AI-TRITON.jpl.nasa.gov>

DBG:*CONDITION-HANDLER-LISTS* is the set of all handler lists in the
order in which they are searched.

It's value is
DBG:*BOUND-HANDLERS*: from CONDITION-BIND (dynamic extent)
DBG:*GLOBAL-HANDLERS*: from DEFINE-GLOBAL-HANDLER (indefinite extent)
DBG:*DEFAULT-HANDLERS*: from CONDITION-BIND-DEFAULT (dynamic extent)
DBG:*INTERACTIVE-HANDLERS*: the debugger (indefinite extent)
DBG:*RESTART-HANDLERS*: from CATCH-ERROR-RESTART (dynamic extent)

The debugger case is not well documented, since I assume no one is
expected to write their own debugger.  Except for its order, and its
purpose (letting the user recover), it works like global handlers, which
are documented.

References:
- SCL condition system
  - From: Charest@AI-SUN.jpl.nasa.gov (Len Charest)

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