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apropos error



Synopsis:  Evidently the preceding sequence of characters is irrelevant,
c-; will always cause this blowout.  I couldn't immediately find any
others that have this effect, but there is some violation of modularity
going on in this particular case of editing in the mini buffer, that is,
under a m-X Apropos command.  It requires further investigation when
more time is available.  Thanks for the report.

  -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

    Date: Wed, 15 May 85 09:55 EDT
    From: David M. J. Saslav <saz@OZ>

    In Symbolics 3670 Release 6.0, IP-TCP 29.0, AISite 9.1,
    microcode TMC5-IO4-MIC 319, FEP 22, on Lisp Machine Duane Allman:

    From toplevel zmacs:
    keystroke sequence: A 
    (where  is a CONTROL-;) no doubt this will bomb out for many
    such ctl chars in the apropos loop...pretty bizarre...

    saz

    >>Trap: The first argument given to the SYS:%INSTANCE-REF instruction, NIL, was not an instance.
    While in the function ZWEI:BP-NODE  ZWEI:MUNG-BP-INTERVAL  ZWEI:DELETE-INTERVAL

    ZWEI:BP-NODE:  (P.C. = 23)
       Arg 0 (BP): ("" 50)
       Local 1 (LINE): ""
       Local 2 (NODE): NIL
       Local 3 (INDEX): 50
       Local 4 (LAST-BP): ("" 0 :MOVES)

    ZWEI:MUNG-BP-INTERVAL:  (P.C. = 4)
       Arg 0 (BP): ("" 50)

    ZWEI:DELETE-INTERVAL:  (P.C. = 16)
       Arg 0 (FROM-BP): ("" 50)
       Arg 1 (TO-BP): ("" 50 :MOVES)
       Arg 2 (IN-ORDER-P): T

    ZWEI:DELETE-BACKWARD-OVER:  (P.C. = 7)
       Arg 0 (LIST): (32 137 136)
       Arg 1 (BP): ("" 50 :MOVES)

    ZWEI:INDENT-FOR-COMMENT:  (P.C. = 70)
       Arg 0 (BP): ("" 0 :NORMAL)
       Local 0 (BP): ("" 50 :MOVES)
       Arg 1 (TIMES): 1
       Arg 2 (CREATE-P): T
       Arg 3 (MOVE-TO-NEXT-P): NIL
       --Defaulted args:--
       Arg 4 (BEG-LINE-NOT-SPECIAL): NIL

    ZWEI:COM-INDENT-FOR-COMMENT:  (P.C. = 12)

    ZWEI:COMMAND-EXECUTE:  (P.C. = 57)
       Arg 0 (COMMAND): ZWEI:COM-INDENT-FOR-COMMENT
       Arg 1 (CHAR): 315
       Arg 2 (PREFIX-CHAR): NIL
       Arg 3 (HOOK-LIST): NIL

    ZWEI:PROCESS-COMMAND-CHAR:  (P.C. = 14)
       Arg 0 (CH): 315

    Rest of stack:
    (:METHOD ZWEI:EDITOR :EDIT):  (P.C. = 233)
    ZWEI:COMMAND-LOOP:  (P.C. = 73)
    ZWEI:EDIT-IN-MINI-BUFFER:  (P.C. = 130)
    (:METHOD ZWEI:HISTORY :FUNCALL-WITH-DEFAULT):  (P.C. = 13)
    ZWEI:GET-EXTENDED-SEARCH-16B-STRING:  (P.C. = 71)
    ZWEI:GET-EXTENDED-SEARCH-STRINGS:  (P.C. = 4)
    ZWEI:COM-APROPOS:  (P.C. = 3)
    ZWEI:COM-DOCUMENTATION:  (P.C. = 151)
    ZWEI:COMMAND-EXECUTE:  (P.C. = 57)
    ZWEI:PROCESS-COMMAND-CHAR:  (P.C. = 14)
    (:METHOD ZWEI:EDITOR :EDIT):  (P.C. = 233)
    (:METHOD ZWEI:TOP-LEVEL-EDITOR :COMBINED :EDIT):  (P.C. = 60)
    ZWEI:ZMACS-WINDOW-TOP-LEVEL:  (P.C. = 51)
    SI:PROCESS-TOP-LEVEL:  (P.C. = 54)