bug#38495: Emacs ignores ~/.Xdefaults and ~/.Xdefaults-hostname

[Andrea Cardaci]

Hi,

I'm trying the master version
(0e774d4f355b4f12a625da5ca9602d1ba876bcc1) and these two files are now
ignored by Emacs, it used to work in version 26.1, well it used to
load the .Xdefaults-hostname file but even that version ignored
.Xdefaults while this page says otherwise:

https://www.gnu.org/software/emacs/manual/html_node/efaq/Emacs-ignores-X-resources.html

In any case the master version now ignores both files. But, according
to strace, it opens that file:

> $ strace -f /opt/emacs/bin/emacs |& grep Xdefaults
> [pid 11310] openat(AT_FDCWD, "/home/cyrus/.Xdefaults-hostname", O_RDONLY) = 6

Instead (discovered via strace) Emacs uses the ~/.Xdefaults/hostname
file, this actually works but it's undocumented and doesn't work in
Emacs 26.1.


Best,
Andrea