[ 1232950 ] -persist option does not work in Version 4.0.0 (Windows)

[Bastian M. <bma...@we...>]

The patch in the attachment makes pgnuplot respect the `-persist` command=

line option. Previously, an `exit` command was always sent to wgnuplot
when there was nothing more in the pipe. Thus, things like
echo plot sin(x) | pgnuplot -persist
did cause wgnuplot to exit directly after plotting.

--=20
Bastian M=E4rkisch
Physikalisches Institut, Universit=E4t Heidelberg