#1986 terminal window doesn't pop up when script loaded externally

[Alexander Stangl]

Hey guys!
I just updated to gnuplot 5.2 and since then I'm having problems with the terminals. I usually execute my scripts via N++ using NppExec. Since the update of gnuplot it doesn't work proberly anymore: the plot window does not open (although the child process is running). Not sure if this is depending on my system or gnuplot in general.
It used to work like:

set term wxt
plot x

Now I need to change the terminal and replot (only in case of plotting to a window, if via png to a file it works directly):

set term wxt
plot x
set term win
repl

Here's the code of NppExec I use:

npp_save
"C:\Program Files\gnuplot\bin\gnuplot.exe" -persist -e "cd '$(CURRENT_DIRECTORY)'; load '$(FILE_NAME)'"

I checked with a task manager if the window is just hidden, but no, it's not.
Workaround so far:

npp_save
"C:\Program Files\gnuplot\bin\gnuplot.exe" -persist -e "set term win; plot x; reset; cd '$(CURRENT_DIRECTORY)'; load '$(FILE_NAME)'"

This problem doesn't occur, when I open the script directly via (w)gnuplot.exe

Thanks for your help

[Bastian Märkisch]

Weird. Using Notepad++ and NppExec I can reproduce your observations.
Works fine from a command prompt.
Does not depend on persist, i.e. same behaviour without "-persist" option and an additional "pause mouse" at the end.
Using "qt" instead of "win" or "wxt" works fine.

What was your previous gnuplot version?

Ethan, this also looks like a real bug. Could you move this to the bug tracker please?

[Ethan Merritt]

Ticket moved from /p/gnuplot/support-requests/224/

Can't be converted:

• _milestone:
• _priority: 5

[Alexander Stangl]

I think it was 5.0.1 - at least with this version it works, while in 5.0.3 the problem already occurs.

[Bastian Märkisch]

Still no progress. On my Windows 10 machine none of the versions I tested (5.2.2, 5.0.7, 5.0.1, 5.0.0, 4.6.7 - 32 or 64bit) works. Finding a version which works would be a great start to search for the change caused this, though.
This could even be related to the version of NPP, NppExec, or Windows.

Note that your work-around does not work for me. But this does:

npp_save
"C:\Program Files\gnuplot\bin\gnuplot.exe" -persist -e "set term win; plot x; set term win close; reset; cd '$(CURRENT_DIRECTORY)'; load '$(FILE_NAME)';"

This opens and closes a windows terminal window. The second time the window is opened, it is actually shown.

[Bastian Märkisch]

Finally fixed in branch master. Will go to 5-2-stable after some testing.