Are the three attached patches acceptable for the emacs-26 branch?
If so, should I add this bug number to all or none of them?

Thanks,

-- 
Basil

In GNU Emacs 26.1.92 (build 5, x86_64-pc-linux-gnu, X toolkit, Xaw3d scroll bars)
 of 2019-03-05 built on thunk
Repository revision: 52fd40068e0f8b41bd29eaec1334299eb86d0bff
Windowing system distributor 'The X.Org Foundation', version 11.0.12003000
System Description:	Debian GNU/Linux buster/sid