[whatwg] Parsing: comment tokenization
contact at nickshanks.com
Sat Apr 7 05:27:14 PDT 2007
On 7 Apr 2007, at 02:56, Anne van Kesteren wrote:
> The tokenization section should also handle:
> as "correct" comments for compat with the web. This means that
> shows "-->" and that
> shows "-->".
Why on earth is this a good idea?
AFAIK browsers and other HTML clients don't currently treat these as
comments, and compelling them to do so will cause several problems:
1) Web developers currently expect things like <!-->5?--> to result
in the comment "greater than five?". Changing such expectations on a
whim is harmful.
2) A double HYPHEN-MINUS delimits comments within tags, this provides
compatibility with XML and SGML and changing this needlessly in HTML5
will just complicate conversion.
3) You claim "compat with the web" but don't provide any evidence to
support that. Are there huge numbers of sites expecting <!--> to
represent a comment without content? Can such sites not be fixed
instead of polluting HTML with additional rules? I'd rather have a
handful of broken sites that their authors will fix than saying to
the other 99% of authors "hey, you can now do this" and ending up
with millions of broken sites. (I say broken, because they will not
be backwards compatible with current or previous UAs)
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