gnuplot-mode and Gnuplot licensing question

[Jonathan O. <j.j...@gm...>]

Hi Gnuplot developers,

I've been working on an add-on module for Bruce Ravel's Emacs
gnuplot-mode, to add context-sensitive completion and documentation
lookup for Gnuplot script buffers. It does a fairly complete parse of
the Gnuplot language so it should hopefully be quite useful once I
finish writing the rest of the grammar rules.

I'd like to release this sometime soon and my question has to do with
licensing. I would like my Elisp code to be GPL'ed (in fact it
probably has to be since it extends gnuplot.el, which is
GPL'ed). However, it has the ability to show short documentation
strings ("ElDoc") to display in the mode line depending on what's at
point, and the easiest way of getting these would be to copy them out
of the Gnuplot info manual. I know Gnuplot itself is not under the GPL
and so I'm not sure whether this would be against its license terms.

Could anyone tell me whether this would be considered acceptable use?

Thanks,
Jonathan