bug#43148: 27.1; Widget text seems to disappear when building with Cairo and Xaw

[Robert Pluim]

>>>>> On Wed, 02 Sep 2020 17:50:41 +0300, Eli Zaretskii <eliz@gnu.org> said:

    >> From: James Cloos <cloos@jhcloos.com>
    >> Cc: rpluim@gmail.com,  pouar@pouar.net,  43148@debbugs.gnu.org
    >> Date: Wed, 02 Sep 2020 10:28:24 -0400
    >> 
    >> >>>>> "EZ" == Eli Zaretskii <eliz@gnu.org> writes:
    >> 
    EZ> So you are saying that the OP's problem started happening only
    EZ> yesterday?
    >> 
    >> no.
    >> 
    >> i'm saying that my current compile of master is twenty some hour old,
    >> uses xaw3d and cairo, and that, with -Q at least, menus display.

    Eli> Are you also using Lucid?

I donʼt think !Lucid + xaw3d is possible, but I haven't checked.

    Eli> If so, then maybe this problem cannot be easily reproduced on every
    Eli> platform in this build?

Iʼve just built emacs-27 with Lucid and xaw3d, and the menus display
fine. Iʼve tried YAMAMOTO-san's suggestion about
Emacs.pane.menubar.font, but with a non-existent font, and that also
works fine.

Robert