Fails when run via xfce shortcuts

[phil294]

Something like x11docker --xephyr ...image... works fine, but when I configure it as an application shortcut in xfce like the following,

it breaks:
Output contains, among not important lines,

x11docker note: --kwin-xwayland: kwin_wayland not found.
x11docker note: --kwin-xwayland: Xwayland not found.
x11docker note: Using X server option --xorg
x11docker note: Could not find Xephyr, Xnest, nxagent,
  xpra, weston+Xwayland or kwin_wayland+Xwayland to run a nested X server.

x11docker note: Current X server :0.0 runs on tty 7.
  Access it with [CTRL][ALT][F7].

bash: [: not a tty: integer expression expected
x11docker note: New Xorg server  will run on tty not a tty.
  Access it with [CTRL][ALT][Fnot a tty].

/usr/lib/Xorg.wrap: Only console users are allowed to run the X server

sed: -e expression #1, char 16: Invalid collation character
Error: Can't open display: :102

I guess the process behind the shortcuts was created via startx in a tty, thus the confusion. But should that even matter? /usr/bin/Xephyr is very much installed. I even printed out the $PATH from a shortcut and it contained /usr/bin (obviously). So that error message is wrong.

Some weird syntax errors are in the above output, not sure whats going on here.

Furthermore, when I at first was confused about the Xorg wrap error message, I put allowed_users = anybody into /etc/X11/Xwrapper.config which didnt exist beforehand (using Arch btw hurr durr). This changed this very error to

(EE) 
Fatal server error:
(EE) Unrecognized option: vtnot
(EE) 
(EE) 

tl;dr: Xephyr should be working here, even though it comes from a tty, but it doesnt.

Thanks once again for this handy script! :-)

[mviereck]

Thank you for reporting this!
I've seen this bug in #176, too. The output of command tty is parsed wrong.
Can you please try out the latest master version? It includes a fix.

[phil294]

Very sweet. Fixed! thanks