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Re: On validation

From: Henri Sivonen <hsivonen@iki.fi>
Date: Mon, 15 Jun 2009 15:53:46 +0300
Cc: HTMLWG WG <public-html@w3.org>
Message-Id: <EA9DAC36-3754-47DD-AACE-565FA272008A@iki.fi>
To: Sam Ruby <rubys@intertwingly.net>
On Jun 15, 2009, at 15:48, Sam Ruby wrote:

> Henri Sivonen wrote:
>> On Jun 13, 2009, at 00:08, John Foliot wrote:
>>> Which brings *me* back to my ongoing question: why should we care  
>>> about
>>> validity (conformance)?
>> You should care about running a validator, because it points out  
>> mistakes you didn't intend to make and, thus, helps you find  
>> mistakes that would otherwise be slower (i.e. more expensive) to  
>> spot.
> I operate a validator for another (and related) specification, so I  
> definitely know where you are coming from, but taking a look at this:
> http://html5.validator.nu/?doc=http%3A%2F%2Fwww.google.com%2F
> Noting that the last six errors relate to the font element, let me  
> ask: how does this help "you find mistakes that would otherwise be  
> slower (i.e. more expensive) to spot"?

It probably doesn't, but I've avoided simply checking in code that  
violates the spec, because I think having a normative conformance  
definition is valuable in order to foster toolchains where both  
generator parts and checker parts have the same notion of what's OK.

Henri Sivonen
Received on Monday, 15 June 2009 12:54:25 UTC

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