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[Gcl-devel] Re: bug in read?


From: Paul F. Dietz
Subject: [Gcl-devel] Re: bug in read?
Date: Fri, 26 Aug 2005 19:37:11 -0500
User-agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.11) Gecko/20050729

I think gcl is getting this right.

,@,@ would mean that the value returned by the innermost
,@ is being used in a position where its value is being
used directly rather than being spliced into a list.
That's undefined.

        Paul


Camm Maguire wrote:
Greetings, and thanks for the report!

This is sufficiently mysterious that I'm calling for more expert
help.  Paul, what say you?

CMUCL:
``(,@,@nil)

`NIL
* `(,@ nil)

NIL
*
CLISP:
`(,@ nil)
NIL
[2]> ``(,@,@nil)
(APPEND)
[3]>
GCL:

`(,@ nil)

NIL


``(,@,@nil)


Error in READ [or a callee]: ,@ or ,. has appeared in an illegal position.

Fast links are on: do (si::use-fast-links nil) for debugging
Broken at READ.  Type :H for Help.
 1 (Continue) Return to top level.
dbl:>>

Take care,

Robert Boyer <address@hidden> writes:


For

 ``(,@,@ nil)

GCL causes a read error but should not as far as I can see.

Bob











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