[webkit-dev] [HTML Editing] WebKit's implementation of removeFormat is completely different from other UAs.

Maciej Stachowiak mjs at apple.com
Mon Jul 26 17:18:15 PDT 2010

On Jul 26, 2010, at 4:27 PM, Ryosuke Niwa wrote:

> On Mon, Jul 26, 2010 at 1:10 PM, Maciej Stachowiak <mjs at apple.com> wrote:
>> I agree.  We should test and see what other browsers do in various cases.
>> But since it's impossible for us to enumerate every possible formatting, I propose to just remove text-decoration, font-weight, etc... and the corresponding presentational elements probably using ApplyStyleCommand as a starting point.  We can then file a separate bug or so to uncover edge cases and polish the behavior.
> Sure it's possible. We can test every CSS property and every HTML element. It should be easy to write a test case that checks every case exhaustively. I don't think it makes sense to change our behavior based on a guess of what other browsers do.
> I don't think that captures all possible formatting because CSS in particular has interesting effects when combined with other styles. What I meant is that we can't test every combination of all CSS properties & HTML elements (i.e. enumerating every possible DOM with every possible combinations of CSS properties applied every possible way on each DOM) simply because there are infinitely many of them. Although I'd guess that some of them are reputations so we might be able to find a finite subset that suffice the purpose. anyhow, I agree that testing every CSS property and every HTML element will be a good idea.  That'll at least give us a starting point.

I doubt any other browser behaves differently for a combination of CSS properties than for individual CSS properties. I guess it's possible but it seems unlikely.

I would note though that there is a finite set of possible combinations of CSS properties, if you pick a finite set of possible values to try for each, but it might be too large a set for the test to complete in a reasonable time frame.


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