#1453 (Linux) wxt plot window hangs when "close" button clicked in --persist mode

[Anonymous]

My Environment:

• Xubuntu Linux 14.04 (64bit)
• Xorg 1:7.7+1ubuntu8

Confirmed gnuplot versions:

• gnuplot-qt 4.6.4-2
  (the one in the Ubuntu repository)
• gnuplot 4.6.5
  (built from the source by ./configure; make;)

Steps to reproduce:

1. Type

   $ echo "set term wxt; plot sin(x)" | gnuplot --persist
   

2. Click the close button in the plot window.

3. Nothing happens. The window won't respond to any mouse action
   anymore.
4. Even after the window manager (xfwm4) forces the window
   to close, the gnuplot process still lives.
   I have to kill it by "kill" command.

The window should close and the gnuplot process should terminate.

Note:

• This also happens when you feed a file to gnuplot, as in:

  $ cat sample.plot
  set term wxt
  plot sin(x)
  $ gnuplot --persist sample.plot
  

[Ethan Merritt]

I can't reproduce this on any of gnuplot 4.6.4 4.6.5 or current cvs.
But I'm not using Ubuntu so I can't say if that particular build has a quirk.

[Toshio Ito]

This is the creator of the ticket
(sorry, I just registered with SourceForge.net)

I also tested it on Xubuntu 12.04 and gnuplot 4.6.5, but could not reproduce the bug.
Maybe the cause is outside gnuplot.

Thanks anyway.