bug#53013: 29.0.50; xwidget-webkit: SIGCHLD not being caught after xwidget-webkit buffer killed

[Po Lu]

Akira Kyle <akira@akirakyle.com> writes:

> I suspect that a call to catch_child_signal might also be needed in
> kill_xwidget so emacs reinstalls its signal handler.

Should be fixed now on master.

Making kill_xwidget call catch_child_signal wasn't enough, since GLib
was resetting SIGCHLD inside a timer set by WebKitGTK and about a dozen
other places as well, hence the very ugly (and unreliable) hack on
master.

It's a temporary solution that just motivated me to look at making Emacs
use GLib for handling subprocesses.