[Scilab-users] Cannot understand scilex behavior when piping

[Laurent Bonaventure]

Hello.

I'm still trying to pipe instructions into scilex (Windows 7, Scilab 5.4).

When I send a plot command, scilex opens the graphics window and draw my 
polyline -> Great !

Then I try to open the graphics editor from within the graphics window 
(e.g. Edit/Axes properties) : nothing happens.

Then I close the graphics window.

Then I send the plot command again. And poof! The graphics windows opens 
AND the long awaited graphics editor too. Except that nothing works in it.

I guess it's some sort of handlers problem: the graphics window cannot 
communicate correctly with the scilab kernel and get the correct 
handlers to the figure.

What's more strange, is that the behaviour is correct when I start 
scilex from within an interactive console (cmd)...

Steps to reproduce (you need some utility like cat from gnuwin32, or any 
way to pipe commands to scilex) :

(Incorrect behaviour, with a pipe)
<from an interactive cmd.exe>
cat | scilex
x = 0:0.1:10
plot(x,cos(x))
<the graphic window opens>
<click on Edit/Axes properties>
<nothing happens>
<close the graphic window>
plot(x,cos(x))
<the graphic window opens, and the graphic editor too (but it isn't 
functional)>

(Correct behaviour, without pipe)
<from an interactive cmd.exe>
scilex
x = 0:0.1:10
plot(x,cos(x))
<the graphic window opens>
<click on Edit/Axes properties>
<the graphic editor shows up immediately and is functional>

I don't understand how scilex can see any difference between both 
approaches, and why it would have a different behaviour based on that 
difference. From its point of view, there shouldn't be any difference.

Ah! And the -nw switch doesn't change anything... You get exactly the 
same behaviour in both cases.

Can someone give me some sort of solution, or pointers, or even give me 
an idea for a workaround. I need to pipe things in scilex, and I need 
the first approach to work correctly...

Thank you.
Laurent