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

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

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

[Colin Baxter]

>>>>> Andrea Cardaci <cyrus.and@gmail.com> writes:

    > 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.


Today's pull from master reads my ~/.Xdefaults satisfactorily.


-- 
Colin Baxter
www.Colin-Baxter.com

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

[Andrea Cardaci]

On Thu, 5 Dec 2019 at 08:51, Colin Baxter <m43cap@yandex.com> wrote:
> Today's pull from master reads my ~/.Xdefaults satisfactorily.

Hi Colin,

The only way here is to put my file in ~/.Xdefaults/hostname.
According to strace, the .Xdefault file (no -hostname suffix) is never
read. Could you try with strace too?

I suspect that you have loaded that file with xrdb -load so Emacs uses
the database and not the actual file.

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

[Colin Baxter]

Dear Andrea,
>>>>> Andrea Cardaci <cyrus.and@gmail.com> writes:

    > On Thu, 5 Dec 2019 at 08:51, Colin Baxter <m43cap@yandex.com> wrote:
    >> Today's pull from master reads my ~/.Xdefaults satisfactorily.

    > Hi Colin,

    > The only way here is to put my file in ~/.Xdefaults/hostname.
    > According to strace, the .Xdefault file (no -hostname suffix) is
    > never read. Could you try with strace too?

    > I suspect that you have loaded that file with xrdb -load so Emacs
    > uses the database and not the actual file.

I've done Ctl-Alt <f1> to log in on a new tty, with a different window
manager (stumpwm). The output of strace is what I'd expect - I've redacted
my user and host names:

[pid  7771] open("/home/username/.Xdefaults", O_RDONLY) = 10
[pid  7771] open("/home/username/.Xdefaults-host", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid  7771] open("/home/username/.Xdefaults", O_RDONLY) = 10
[pid  7771] open("/home/username/.Xdefaults/host", O_RDONLY) = -1 ENOTDIR (Not a directory)

I only have ~/.Xdefaults and no ~/.Xdefaults/host or ~/.Xdefaults/host
files.

Hope this helps.

Best wishes,

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

[Andrea Cardaci]

Hi Colin,

Thanks for trying it out.

On Thu, 5 Dec 2019 at 13:11, Colin Baxter <m43cap@yandex.com> wrote:
> [pid  7771] open("/home/username/.Xdefaults", O_RDONLY) = 10
> [pid  7771] open("/home/username/.Xdefaults-host", O_RDONLY) = -1 ENOENT (No such file or directory)
> [pid  7771] open("/home/username/.Xdefaults", O_RDONLY) = 10
> [pid  7771] open("/home/username/.Xdefaults/host", O_RDONLY) = -1 ENOTDIR (Not a directory)

Well, this is super weird, if I only place a .Xdefault file in my home
and run Emacs via strace I see:

> $ strace -f emacs |& grep Xdefaults
> [pid 31920] openat(AT_FDCWD, "/home/cyrus/.Xdefaults-hostname", O_RDONLY) = -1 ENOENT (No such file or directory)
> [pid 31920] openat(AT_FDCWD, "/home/cyrus/.Xdefaults/hostname", O_RDONLY) = -1 ENOTDIR (Not a directory)

Also marginally weird that we're seeing different syscalls (open vs openat).

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

[Colin Baxter]

Dear Andrea,
>>>>> Andrea Cardaci <cyrus.and@gmail.com> writes:

    > Hi Colin, Thanks for trying it out.

    > On Thu, 5 Dec 2019 at 13:11, Colin Baxter <m43cap@yandex.com> wrote:
    >> [pid 7771] open("/home/username/.Xdefaults", O_RDONLY) = 10 [pid
    >> 7771] open("/home/username/.Xdefaults-host", O_RDONLY) = -1
    >> ENOENT (No such file or directory) [pid 7771]
    >> open("/home/username/.Xdefaults", O_RDONLY) = 10 [pid 7771]
    >> open("/home/username/.Xdefaults/host", O_RDONLY) = -1 ENOTDIR
    >> (Not a directory)

    > Well, this is super weird, if I only place a .Xdefault file in my
    > home and run Emacs via strace I see:

    >> $ strace -f emacs |& grep Xdefaults [pid 31920] openat(AT_FDCWD,
    >> "/home/cyrus/.Xdefaults-hostname", O_RDONLY) = -1 ENOENT (No such
    >> file or directory) [pid 31920] openat(AT_FDCWD,
    >> "/home/cyrus/.Xdefaults/hostname", O_RDONLY) = -1 ENOTDIR (Not a
    >> directory)

    > Also marginally weird that we're seeing different syscalls (open
    > vs openat).

Good luck on finding a solution. I've reached the end of my sys
abilities.

Best wishes,

bug#38495: Fixed

[Łukasz Stelmach]

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Hi,

Apparently this was fixed since in

    https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=4b118bdca1d8aa130fb67eadb16e08e87e698aa4
-- 
Miłego dnia,
Łukasz Stelmach

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bug#38495: Fixed

[Lars Ingebrigtsen]

Łukasz Stelmach <steelman@post.pl> writes:

> Apparently this was fixed since in
>
>     https://git.savannah.gnu.org/cgit/emacs.git/commit/?id=4b118bdca1d8aa130fb67eadb16e08e87e698aa4

OK; I'm closing this bug report, then.  (If there's still issues in this
area, please respond to the debbugs address and we'll reopen.)

-- 
(domestic pets only, the antidote for overdose, milk.)
   bloggy blog: http://lars.ingebrigtsen.no