[asdf-devel] Patch for ACL 8.0

[Gary King]

Hi Jeff,

Thanks for the patch. Unfortunately, the whole "#+ #+ a b" versus "#+  
a #+ b" is contentious so unless there is a lot of push back, I think  
it might be better to leave things as is and suggest that ACL user's set

> EXCL:*WARN-ON-NESTED-READER-CONDITIONALS*

to nil in their init file. I'll at least make a note of it in the  
manual unless some other solution presents itself.(*)

(*) E.g., adding some compile time magic code to set w-o-n-r-c to nil  
for the duration of the compile without mucking up the user's current  
settings.

On Jul 6, 2009, at 12:50 PM, Jeff Palmucci wrote:

> When loading the git version of asdf under ACL 8.0, you get the  
> following worrying message:
>
> Warning: Nested reader conditional detected on
>         #<FILE-SIMPLE-STREAM
>           #P"/afs/csail.mit.edu/u/j/jpalmucci/repo-install/repo- 
> install/../asdf/asdf.lisp" for input pos 52418>.
>         The behavior of this feature of ACL changed between ACL 7.0
>         and 8.0 to be more in line with the intent of the ANS
>         specification.  You should examine the code in question to
>         make sure it does what you intend.  In ACL 8.0, (list
>         #+allegro :allegro #-allegro #+foo :foo #-foo :default)
>         evaluates to (:allegro) instead of (:allegro :default) as in
>         ACL 7.0 and before. See the documentation for
>         EXCL:*WARN-ON-NESTED-READER-CONDITIONALS* and
>         EXCL:*SHARP-PLUS-DE-FACTO-STANDARD-COMPATIBLE* for more
>         information.
>
>
> Here as a patch to fix the problem.
>
> <0001-fix-a-nested-reader-conditional.patch>
>
>
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