[whatwg] pattern attribute
ian at hixie.ch
Sat Aug 28 07:27:07 PDT 2004
On Mon, 23 Aug 2004, Super-User wrote:
> > >
> > > No, if the regexp is invalid, it is just ignored.
> > This is both a good thing and a bad thing. Ignoring the regexp makes
> > sense, but also makes debugging complex regexps a nightmare. Maybe
> > WHATWG should provide a reference implementation regexp checker and/or
> > debugger for these purposes?
> > Thoughts?
> I am inclined to agree. I can't see any benefit in silently failing an
> invalid regex.
The main benefit would be not exposing the user to author error.
> I don't think you necessarily need a standard checker / debugger (just a
> standard regex!) but you do need to know when a regex is invalid. After
> all, this is likely to be a "development time" rather than a "run time"
> issue, as it is not dependent on input, so there should be circumstances
> where throwing an error is a bad thing.
Well, I have nothing against the UA reporting the error, e.g. to a
developer console, just so long as it doesn't break the form.
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
Things that are impossible just take longer. `._.-(,_..'--(,_..'`-.;.'
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