bug#74295: Update TODO -> NeXTstep port -> Improved xwidgets support

[Andrew De Angelis <bobodeangelis@gmail.com>]

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Hello everyone.

I have a question and a possible patch to contribute.
For context: the most glaring issues with xwidget support of NS have been
fixed: I contributed a patch to get rid of memory leaks a while ago, under:
"bug#60703 Patches to xwidget code".

I've just noticed that I forgot to update the TODO file, so it still
mentions crashes:
> trying to display a xwidget in the "killed" state will make Emacs crash.

I've used the xwidget feature extensively and in my experience, xwidgets do
not crash Emacs anymore.

Question:
 - Could someone clarify what we mean by displaying a xwidget in the
"killed" state? I want to make sure I understand the problem and it's fixed

Possible patch (if the problem is indeed fixed):
Attached. Remove the mention of crashes, and clarify which features are
still missing from the NS port.


Thanks for all your work!

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diff --git a/etc/TODO b/etc/TODO
index f9918fede38..fa19d9f96d9 100644
--- a/etc/TODO
+++ b/etc/TODO
@@ -955,13 +955,13 @@ This sections contains features found in other official Emacs ports.
 Emacs 25 has support for xwidgets, a system to include WebKit widgets
 into an Emacs buffer.
 
-They work on NS, but not very well.  For example, trying to display a
-xwidget in the "killed" state will make Emacs crash.  This is because
-the NS code has not been updated to keep with recent changes to the
-X11 and GTK code.
+They work on NS, but not very well.  This is because the NS code has
+not been updated to keep with recent changes to the X11 and GTK code.
 
-Many features such as xwidget-webkit-edit-mode do not work correctly
-on NS either.
+Many features do not work correctly on NS, such as:
+ - xwidget-webkit-edit-mode
+ - xwidget-webkit-isearch-mode
+ - xwidget-webkit-browse-history.
 
 **** Respect 'frame-inhibit-implied-resize'
 When the variable 'frame-inhibit-implied-resize' is non-nil, frames