[asdf-devel] One failure on ASDF on Allegro/Windows

Robert P. Goldman rpgoldman at sift.info
Wed Feb 26 03:20:50 UTC 2014

Zach Beane wrote:
> "Robert P. Goldman" <rpgoldman at sift.net> writes:
>> Zach, when ASDF reads a system name from a symbol, it takes the symbol
>> name and down cases it. So loading :foo is the same as loading "foo".
>> So I don't think this should break anything for you, unless quicklisp
>> has some systems with camel-cased names.
> My mistake, I read the situation backwards. Quicklisp currently coerces
> system names to downcase before loading.
>> Also, according to the hyperspec, a logical pathname can only contain
>> upper case letters, so it can't distinguish files whose names differ
>> by case alone. (Cf.19.3.1).
> Sure, one logical pathname cannot map to multiple physical pathnames,
> but any single logical pathname can map to *any* single physical
> pathname.
> Zach

Right, but the concern is the case (unlikely, but not impossible), where
we have systems "fOo" and "foo" which must map to the same file....

I don't see any huge win from permitting this that makes up for the
downsides of name collision, and treating strings and symbols
non-orthogonally in a hard-to-understand way.

I'm certainly willing to entertain counter-arguments if anyone has them.


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