Allin Cottrell a écrit :

On Thu, 17 May 2007, a b wrote:

  

"'" in variable's display name that still causes gnuplot to 
crash -- supposed to have been fixed !
    

I can't replicate that problem any moore.  If you still see it with 
1.6.5 please post a precise recipe for getting the gnuplot 
failure.  Thanks.

Ok! After having done some tests with 1.6.5, here's what I come out with:
It seems that the problem lies with the  X-Y axis combination.

Suppose you have two variables, X & Y (undated or time series)

1. I insert a single quote ( ' ) into X display name and execute "gnuplot" command twice.
"gnuplot X Y" --is OK but "gnuplot Y X" --crashes.

2. I insert a single quote into Y display name too. Both variables have ( ' ) in their display names now.
In such a case both plots are OK: "gnuplot Y X" --is OK, "gnuplot X Y" --is OK.

3. I keep only Y with ( ' ) in its display name. Then "gnuplot Y X" --is OK but "gnuplot X Y" --crashes.

So, if only the X-axis variable contains the single quote, then gnuplot crashes.
By the way, would it be more intuitive that the gnuplot's arguments be "xvars yvars" instead of the actual ?

PS. The userdir works fine now!

Thanks,
Artur