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newLISP Fan Club

Forum => newLISP in the real world => Topic started by: hartrock on August 12, 2015, 06:47:29 PM

Title: [bug][10.6.4] expansion macro rewrite fails -> workaround
Post by: hartrock on August 12, 2015, 06:47:29 PM
Tried after User Manual and Reference v.10.6.4:
Code Select
sr@free:~/newLISP$ newlisp
newLISP v.10.6.4 64-bit on Linux IPv4/6 UTF-8 libffi, options: newlisp -h

> (macro (double X) (+ X X))
(lambda-macro (X) (expand '(+ X X)))
> (define double (lambda-macro (X) (expand '(add X X))))

ERR: symbol is protected in function define : double
>
Title: Re: [bug][10.6.4] expansion macro rewrite does not work
Post by: rrq on August 12, 2015, 07:57:09 PM
Good catch. And it happens on 10.6.[23] as well.
Title: Re: [bug][10.6.4] expansion macro rewrite does not work
Post by: hartrock on August 13, 2015, 02:32:39 AM
But it works with:
Code Select
sr@free:~/newLISP$ newlisp
newLISP v.10.6.4 64-bit on Linux IPv4/6 UTF-8 libffi, options: newlisp -h

> (macro (double X) (+ X X))
(lambda-macro (X) (expand '(+ X X)))
>  (constant 'double (lambda-macro (X) (expand '(add X X))))
(lambda-macro (X) (expand '(add X X)))
> double
(lambda-macro (X) (expand '(add X X)))
>

So this seems to be a minor issue.



PS: Is this the best place for such reports? Is it OK, to delete this post after a fix?
Title: Re: [bug][10.6.4] expansion macro rewrite fails -> workaroun
Post by: Lutz on August 13, 2015, 06:31:01 AM
In v10.6.4 the manual entry has been changed to constant.



Note, that changes to an expansion macro definition only affect future loaded code, not already read and expanded code.



Ps: don't delete bug posts.
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