bug#28907: 26.0.90; [eww] some problems in input/textarea

[Eli Zaretskii]

> Date: Wed, 13 Dec 2017 17:19:53 +0900
> From: Katsumi Yamaoka <yamaoka@jpl.org>
> Cc: Lars Ingebrigtsen <larsi@gnus.org>
> 
> On Fri, 17 Nov 2017 17:42:35 +0900, Katsumi Yamaoka wrote:
> > Some generic editing commands, except for `undo', now almost work
> > in input/textarea.  To try writing something in those fields, you
> > can use the following two pages:
> 
> > <https://html.com/tags/input/#Code_Example>
> > <https://html.com/tags/textarea/#Code_Example>
> 
> I've completed the `undo' feature used in eww's editable fields.
> It supports undo/redo-switching and works just like Emacs's undo.
> The last (hopefully) patch containing changelog entries is here:
> 
> <http://www.jpl.org/tmp/eww.el-20171213.patch>
> 
> I would like to apply it to the emacs trunk if it is acceptable.

Looks good to me, thanks.

Does this implement new user-level features, or just fix bugs?  In the
former case, a NEWS entry describing user-visible changes would be
appropriate.