Re: Time to branch off 4.0 from 4.1?

[Petr M. <mi...@ph...>]

> I have some ideas, but not a complete solution.
> How exactly do you "close gnuplot"?  Do you mean that you
> click on one of the buttons that the window manager adds to
> the frame of the plot window?  Or do you type "q", or what?

Yes, by hitting "q" key or by Alt-F4.

> On the gnuplot side I have added code to terminate the
> paused_for_mouse state whenever a GE_reset event is seen.
>
> Please let me know if this change resolves your problems with
> running gnuplot via a script.  There are ways to close a window that
> bypass this mechanism (killing gnuplot_x11 from the command line is
> one of them), but I think this change handles the normal cases.

Yes, it works better. Now, can you please add the following improvement:

If user closes gnuplot_x11, then "show variables" should have define all
usual mousing variables, obviously with zero values, and the MOUSE_KEY
should be set to -1:

MOUSE_X = 0
MOUSE_Y = 0
MOUSE_X2 = 0
MOUSE_Y2 = 0
MOUSE_SHIFT = 0
MOUSE_ALT = 0
MOUSE_CTRL = 0
MOUSE_KEY = -1

This is absolutely important in order not to break scripts for bidirectional
communication of other programs with gnuplo, which get feedback from mousing
by writing the above MOUSE_* values to pipe / fifo.

In my testing Octave scripts, which does some actions passed from gnuplot's
"pause mouse key", after the following sent to gnuplot via fifo:

fprintf(gp.f, 'pause mouse key\n\n');
fflush(gp.f);
fprintf(gp.f, 'print MOUSE_X, MOUSE_Y, MOUSE_KEY\n');
fflush(gp.f);

gnuplot reports (obvious) error: "undefined variable: MOUSE_KEY".


Finally, what do you think about this: "q" hotkey is disabled when "pause
mouse key" comes to action; thus, command.c should call "x11_hotkeys(0)"
and afterwards "x11_hotkeys(1)" to enable them again. Note that "<space>"
hotkey is still quite useful to be unchanged.

---
PM