RE: [xri] Draft -07 feedback from another Visa person (responses cont'd)

Title: Message

Hi 
All,

 

I'd 
like to follow up on the case-insensitivity issue and mention what I see as a 
reasonable example that would argue against case-insensitivity.  In my 
experience, the vast majority of my accounts/login IDs on various systems are 
case sensitive.  Also, in unix-based systems (and many others), 
most identifiers (anything in the file system for sure) are case 
sensitive.  If any of these identifiers are to be used in XRIs, 
the case-sensitivity would need to be maintained, or ambiguity would be 
introduced.

 

Between this issue and the Unicode issue, it seems to 
me that it would be a bad idea to try to make any part of an XRI case 
insensitive.

 

Mike

  
-----Original Message-----
From: Loren West 
  [mailto:]
Sent: Thursday, September 04, 2003 
  11:36 AM
To: 'Dave McAlpin'; 'Sakimura, Nat'; 'Wachob, Gabe'; 
  
Subject: RE: [xri] Draft -07 feedback from 
  another Visa person (responses cont'd)

  
Case insensitivity is a form of normalization that a large population 
  of people receive benefit from.  If there's a way to provide that 
  benefit to those people without degrading functionality where it doesn't make 
  sense, then I think we should do it.

  
 

  
I'd 
  hate to see case insensitivity for ALPHA characters go 
  away.

  
 

  
=LOREN

  
 

  

  
-----Original Message-----
From: Dave 
  McAlpin [mailto:] 
Sent: Thursday, September 
  04, 2003 11:06 AM
To: 'Sakimura, Nat'; 'Wachob, Gabe'; 
  
Subject: RE: [xri] Draft -07 feedback from 
  another Visa person (responses cont'd)

  
    

    
So are we OK with 
    case-insensitive comparison for ALPHA characters in the authority component, 
    or should we drop this altogether?

    
 

    
-----Original 
    Message-----
From: 
    Sakimura, Nat [mailto:] 
Sent: Thursday, September 04, 2003 
    10:57 AM
To: Dave McAlpin; 
    Wachob, Gabe; 
Subject: RE: [xri] Draft -07 feedback 
    from another Visa person (responses cont'd)

    
 

    
I do 
    not think that there is a good way of introducing “case insensitivity” to 
    Unicode in general. 

    
Case 
    insensitivity is a form of normalization, which is very problematic for the 
    international character set. IMHO, only meaningful form of general 
    equivalence is the bit to bit comparison or the comparison of the resolved 
    result from the same authority. 

    
 

    
Nat

    
 

    

    
-----Original 
    Message-----
From: Dave 
    McAlpin [mailto:] 
Sent: Friday, September 05, 2003 2:43 
    AM
To: 'Wachob, Gabe'; 
    
Subject: RE: [xri] Draft -07 feedback 
    from another Visa person (responses cont'd)