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This page is part of the web mail archives of SRFI 104 from before July 7th, 2015. The new archives for SRFI 104 contain all messages, not just those from before July 7th, 2015.

 | From: Derick Eddington <derick.eddington@xxxxxxxxx>
 | Date: Wed, 07 Oct 2009 13:23:45 -0700
 | On Wed, 2009-10-07 at 13:34 -0400, Aubrey Jaffer wrote:
 | > SRFI-103 should have some text comparing SRFI-59 to SRFI-103 and
 | > explaining why the conventions of SRFI-59 are inadequate to your
 | > goals for SRFI-103.
 | Thanks for pointing-out SRFI-59.  I just read it for the first
 | time.  I need more time and sleep to think about it, but right now
 | I'm thinking it probably is not a fit for this SRFI, and I probably
 | can succinctly describe why in the document of this SRFI.  I'll
 | return to this topic.  (Anyone, feel free to comment about this if
 | you want while I wait.)

I got a chance to look at SRFI-104, and SRFI-59 is more relevant
there.  There is no fundamental reason for file paths to be Unicode
strings.  The approach of SRFI-104 exposes to the programmer
file-system details like separators which would normally only be used
when gluing together paths.  Furthermore, several operating-systems'
file-systems have more than one possible separator:

(define vicinity:suffix?
  (let ((suffi
	 (case (software-type)
	   ((amiga)			'(#\: #\/))
	   ((macos thinkc)		'(#\:))
	   ((ms-dos windows atarist os/2) '(#\\ #\/))
	   ((nosve)			'(#\: #\.))
	   ((unix coherent plan9)	'(#\/))
	   ((vms)			'(#\: #\]))
	    (slib:warn "require.scm" 'unknown
	    	       'software-type (software-type))
    (lambda (chr) (and (memv chr suffi) #t))))

Vicinities can be strings or some other datatype depending on the
hosting operating-system.  Vicinity operations are higher level than
string operations, incorporating the separators and file-system
conventions.  So I think SRFI-104 could benefit from building on