[uf-dev] Case-sensitivity

[Ryan King]

On Jan 18, 2006, at 12:37 PM, Dan Connolly wrote:
> On Jan 18, 2006, at 2:02 PM, Tantek Çelik wrote:
>> ...
>>
>> I thought I had specified this in hcard-parsing, but perhaps not.
>>
>> The class names are case-sensitive per HTML4.01 (see "A Touch of  
>> Class" for
>> more on that).
>>
>> The enumerated *values* are case-INsensitive, and thus yes,  
>> applications
>> should accept home, Home, HOME, HoMe, etc as 'home'.
>
> Wow... that seems like 180 degrees from the answer I got earlier...
>     * 2005-07-23 raised by DanConnolly
>          1. Are class names case sensitive or not? hcard says "If  
> names in the source schema are case-insensitive, then use an all  
> lowercase equivalent."
>                 o A: ACCEPTED FAQ. Class names are case sensitive  
> per the HTML4 specification. Hence hCard explicitly specifies the  
> case of class name to use for source schema names that are case- 
> insensitive.
>          2. ...but I find example data with class="Given-Name"
>                 o A: ACCEPTED RESOLVED. That is from an older  
> preliminary version of the hCard spec which used mixed case class  
> names. Such class names are no longer valid hCard. Please note  
> which examples (URLs) are using the older class names and hopefully  
> we can get them fixed.
>                       + A: By Brian Suda (http://suda.co.uk) I have  
> fixed all the references in the hcard-brainstorming page to reflect  
> the lower-case style, this is a hold-over from the original design,  
> X2V has been updated.
>          3. ..and code that supports it [data with class="Given- 
> Name"].
>                 o A: ACCEPTED RESOLVED. Any code supporting the  
> older class name(s) is for backward compatibility only, and should  
> be phased out. Any new hCard code SHOULD NOT support such mixed  
> case class names
>
>  -- http://www.microformats.org/wiki/hcard-issues

I think the idea is to make a distinction between properties and  
enumerated values. So, for example 'given-name' is lower-cased, while  
stuff like ADR and TEL types are case insensitive.

FWIW, I don't think we can get away with requiring enumerated values  
to be lowercased. I, for one, would feel dirty having to do this:

> <abbr class="type" title="home">Home</abbr>

And I don't think I'd be the only one.

-ryan
--
Ryan King
ryan at technorati.com