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52 lines
2.4 KiB
Plaintext
Executable File
52 lines
2.4 KiB
Plaintext
Executable File
Wednesday February 17,1982 LQ+2D.4H.21M.13S. -- JonL --
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1) In SHARPM 82, #| now works as on the LISPM, namely #|...cruft...|#
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"disappears" like a balanced comment; note that termination is |#
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Also, #<n>R<ddd> now works; e.g. #3R21 is 7 (21 in base 3).
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2) Two new functions in auxillary files, but not autoloading
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DEFCONST is in the MLMAC file; it is like DEFVAR, but always SETQs.
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ARRAYP is in the MLSUB file; returns true for non-funny arrays.
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3) GENTEMP, an LSUBR, generates truly uninterned symbols. Should be
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used in preference to GENSYM by macros which generate temporary
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local variables.
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4) The TTYNOTES-FUNCTION facility for COMPLR has been emended
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_______________________________________________________________________
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2) Two new functions in auxillary files, but not autoloading
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DEFCONST is in the MLMAC file; it is like DEFVAR, but always SETQs.
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ARRAYP is in the MLSUB file; returns true for non-funny arrays.
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(defun ARRAYP (x)
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(and (eq (typep x) 'ARRAY)
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(memq (array-type x) '(NIL T FIXNUM FLONUM))
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'T))
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3) GENTEMP, an LSUBR, generates truly uninterned symbols. Should be
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used in preference to GENSYM by macros which generate temporary
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local variables.
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GENTEMP permits one optional argument, a prefix for the symbol to be
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created (defaults to T), and creates a symbol like
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(maknam (append (explode <prefix>)
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(explode '|..|)
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(explode (<increment-gentemp-counter>))))
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E.g., (GENTEMP) => |T..1|
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(GENTEMP '|Foo|) => |Foo..1|
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A basic problem with GENSYM is that even though the symbol is uninterned
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when created, it may be written out to a FASL during compilation, and
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upon loading it will then be interned; separate such compilations
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can thus have unfortunate co-incidences between variables which were
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thought to be unique. Any symbol with a +INTERNAL-TEMP-MARKER
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property on its property list will be treated during compilation in
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such a way that it won't be interned when the FASL file is loaded.
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4) The TTYNOTES-FUNCTION facility for COMPLR has been emended
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If a symbol has a TTYNOTES-FUNCTION property, then that is assumed to
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be some function which when applied to the symbol will either return a
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re-nameing of it for the unfasl and ttynotes purposes, or will return ()
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meaning "I've alredy outputted all the msgs I care to see". Currently it
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doesn't support the re-naming for break-point error msgs.
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