I'd like to encourage you to set up a test plan for this. My impression of
the risk profile of this work is that we could easily break some really
important use-cases, and it's likely that sites customize for gecko
behavior and rely on it, either accidentally or on purpose. This is
definitely the kind of thing that would be worth rolling out carefully and
perhaps slowly. Will this behavior be behind a pref which is easy to flip,
test, and roll out?
--BDS
On Sun, Apr 2, 2017 at 8:52 AM, Aryeh Gregor <a...@aryeh.name> wrote:
> In our rich-text editor (used in Firefox for designMode and
> contenteditable), when the user hits Enter, we have historically always
> inserted a <br>. This does not match any other browsers, which use <p> or
> <div> as line separators. In bug 1297414, I'm changing our behavior to use
> <div> as a line separator. This matches Blink/WebKit.
>
> So if you have the text "foobar" and hit Enter in between the "foo" and the
> "bar", previously you would get "foo<br>bar", and soon you will get
> "<div>foo</div><div>bar</div>". The defaultParagraphSeparator command can
> be used to change the separator to "p" instead (which matches Edge's
> default behavior last I checked).
>
> Pages or embedders that want to keep the old behavior can run the following
> command: document.execCommand("defaultParagraphSeparator", false, "br").
>
> This change is not likely to affect high-profile sites that use rich-text
> editing (webmail etc.), because due to browser incompatibility, these sites
> all override this behavior anyway.
>
> Our new behavior is as specified in the essentially unmaintained editing
> specification that I wrote several years ago, and tested by the
> web-platform-tests editing suite. (Except that the "br" value to
> defaultParagraphSeparator is unspecified, and is a Mozilla-specific
> extension for backwards compatibility.)
> _______________________________________________
> dev-platform mailing list
> dev-platform@lists.mozilla.org
> https://lists.mozilla.org/listinfo/dev-platform
>
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