Re: [Sbcl-devel] question about bug #17 patch

[<ma...@at...>]

William Harold Newman wrote:
> 
> In his patch for bug #17, in DEFUN TRY-DEFAULT-TYPES, Martin Atzmueller
> has this code:
> +          (if (typep pathname 'logical-pathname)
> +            (frob pathname (string-upcase type))
> +            (frob pathname type))
> I don't know the pathname system very well, so there might be some
> obvious reason for it that I just don't know, but I can't see why the
> string should be upcased in one case and not the other. Could someone
Per CLHS, logical-pathname strings are assumed to contain only uppercase
characters, as far as I know. If the type is not upcased in the code
above,
the file will not be found.

You will find a similar piece of code in the logical-pathname patch in
%make-pathname
or so, where I upcased the components, too.
Actually doing this is not _in_ the standard, but it seems reasonable
looking
at the writeup issue "LOGICAL-PATHNAME:ADD" in CLHS,
where it says that lowercase components are upcased.


Cheers,

Martin

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