Public bug reported: This is a sort of annoyingly complex interaction, so bear with me. The observed problem is that xdg-open does not exit with a non-zero exit code when it fails to open.
``` $ unset DISPLAY $ xdg-open http://example.com exo-open: Cannot open display: . $ echo $? 0 ``` It turns out to not exactly be xdg-open's fault, though: ``` $ sh -x $(which xdg-open) http://example.com 2>&1 | tail -n10 + return 0 + open_xfce http://example.com + exo-open --help + gio help open + gio open http://example.com exo-open: Cannot open display: . + [ 0 -eq 0 ] + exit_success + [ 0 -gt 0 ] + exit 0 ``` So, from this we see that xdg-open uses `exo-open --help` to see if exo- open works, but it fails due to the DISPLAY, so it falls back to gio open. gio open ends up turning around and calling exo-open again, but gio swallows the exit code, so xdg-open thinks it worked. ``` $ exo-open http://example.com exo-open: Cannot open display: . $ echo $? 1 $ gio open http://example.com exo-open: Cannot open display: . $ echo $? 0 ``` Versions: $ lsb_release -rd Description: Ubuntu 22.04.1 LTS Release: 22.04 $ xdg-open --version xdg-open 1.1.3 $ exo-open --version | head -n1 exo-open 4.16.3 $ gio --version 2.72.4 Specifically: exo-utils: Installed: 4.16.3-1 Candidate: 4.16.3-1 Version table: *** 4.16.3-1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages 100 /var/lib/dpkg/status libglib2.0-bin: Installed: 2.72.4-0ubuntu1 Candidate: 2.72.4-0ubuntu1 Version table: *** 2.72.4-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 100 /var/lib/dpkg/status 2.72.1-1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages xdg-utils: Installed: 1.1.3-4.1ubuntu3~22.04.1 Candidate: 1.1.3-4.1ubuntu3~22.04.1 Version table: *** 1.1.3-4.1ubuntu3~22.04.1 500 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages 100 /var/lib/dpkg/status 1.1.3-4.1ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu jammy/main i386 Packages ** Affects: glib2.0 (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to glib2.0 in Ubuntu. https://bugs.launchpad.net/bugs/2007621 Title: gio open exits with success even though the underlying exec failed Status in glib2.0 package in Ubuntu: New Bug description: This is a sort of annoyingly complex interaction, so bear with me. The observed problem is that xdg-open does not exit with a non-zero exit code when it fails to open. ``` $ unset DISPLAY $ xdg-open http://example.com exo-open: Cannot open display: . $ echo $? 0 ``` It turns out to not exactly be xdg-open's fault, though: ``` $ sh -x $(which xdg-open) http://example.com 2>&1 | tail -n10 + return 0 + open_xfce http://example.com + exo-open --help + gio help open + gio open http://example.com exo-open: Cannot open display: . + [ 0 -eq 0 ] + exit_success + [ 0 -gt 0 ] + exit 0 ``` So, from this we see that xdg-open uses `exo-open --help` to see if exo-open works, but it fails due to the DISPLAY, so it falls back to gio open. gio open ends up turning around and calling exo-open again, but gio swallows the exit code, so xdg-open thinks it worked. ``` $ exo-open http://example.com exo-open: Cannot open display: . $ echo $? 1 $ gio open http://example.com exo-open: Cannot open display: . $ echo $? 0 ``` Versions: $ lsb_release -rd Description: Ubuntu 22.04.1 LTS Release: 22.04 $ xdg-open --version xdg-open 1.1.3 $ exo-open --version | head -n1 exo-open 4.16.3 $ gio --version 2.72.4 Specifically: exo-utils: Installed: 4.16.3-1 Candidate: 4.16.3-1 Version table: *** 4.16.3-1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/universe amd64 Packages 100 /var/lib/dpkg/status libglib2.0-bin: Installed: 2.72.4-0ubuntu1 Candidate: 2.72.4-0ubuntu1 Version table: *** 2.72.4-0ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 100 /var/lib/dpkg/status 2.72.1-1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages xdg-utils: Installed: 1.1.3-4.1ubuntu3~22.04.1 Candidate: 1.1.3-4.1ubuntu3~22.04.1 Version table: *** 1.1.3-4.1ubuntu3~22.04.1 500 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu jammy-updates/main i386 Packages 100 /var/lib/dpkg/status 1.1.3-4.1ubuntu1 500 500 http://us.archive.ubuntu.com/ubuntu jammy/main amd64 Packages 500 http://us.archive.ubuntu.com/ubuntu jammy/main i386 Packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glib2.0/+bug/2007621/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
