** Summary changed:

- Improve session detection
+ Decorations/headerbars are broken: double bar in Xorg logins and missing in 
Wayland logins

** Description changed:

+ Decorations/headerbars are broken: double bar in Xorg logins and missing
+ in Wayland logins.
+ 
  The session detection for gtk3-nocsd doesn't work properly as it still
  uses old session detection method of gnomerc. It tries to detect the
  session by shipping 51gtk3-nocsd-detect in /etc/X11/Xsession.d.
  
  51gtk3-nocsd-detect uses:
  
  1) `BASESTARTUP=${STARTUP%% *}` which fails as STARTUP was never set on
  Ubuntu
  
  2) `BASESTARTUP=$(basename $(readlink /etc/alternatives/x-session-
  manager))` which will fail(it never goes into the inner loop due to
  previous error) for unity session as unity session also uses gnome-
  session but wants to set GTK_CSD=0 globally.
  
  The modern way to detect session is to use $XDG_CURRENT_DESKTOP
  variable. I attached a patch which takes advantage of that.

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https://bugs.launchpad.net/bugs/1745206

Title:
  Decorations/headerbars are broken: double bar in Xorg logins and
  missing in Wayland logins

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