[whatwg] Re: Web Forms 2.0 Substantial - Section 2
malcolm-what at farside.org.uk
Wed Jun 23 08:29:33 PDT 2004
Malcolm Rowe writes:
> > http://www.jacobsm.com/regexp.htm seems to say "match anything", so
> > you could define the empty string as being the pattern "" without the
> > ^$ bit.
> Note that, in contrast, the production '^$' matches only *empty* inputs.
> What do we want pattern="" to mean - match empty inputs, or match any
> input? I'd tend to the former.
Replying to myself; I've just noticed that this /is/ explicit in the current
version (I thought it was only implicitly described). So yes, we should say
that an empty or omitted attribute is equivalent to the empty regexp.
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