Meaning of trange in parametric plots

[Dima K. <gn...@di...>]

Hi.

I'm observing that trange settings are ignored when making parametric
plots from data files.

This works as expected:

 set parametric
 set trange [-5:3]
 plot t,t*t

I see a parabola with x=[-5..3]


This is suprising, however:

 set parametric
 set trange [-5:3]
 plot 'dat'

with 'dat' containing

 0 0
 1 1
 2 4
 3 9
 4 16
 5 25

Here I see all the points being plotted, not limited at t=3, as I
expected. Is this intended behavior or a bug? If it's correct, then the
documentation should be expanded a bit to mention this detail. Should I
add this to the docs?

dima