4.4-rc1: sticky x-axis reversal

[Hans-Bernhard B. <HBB...@t-...>]

Hello everyone,

I've just received a bug report from a German-speaking user.  4.4-rc1 
(and current 4.4 branch CVS) both fail on the following script:

set multiplot layout 1,2
plot [2:0] sin(x)
plot [0:2] sin(x)
unset multiplot

The problem is that the axis of the second plot is reversed, too.  Since 
it really only applies for the time of a plot command, specifying an 
inverted axis interval like this shouldn't set the 'reverse' option, but 
it does:

gnuplot> p [2:0] sin(x)
gnuplot> show xr

         set xrange [ * : * ] reverse nowriteback  # (currently 
2.00000:0.00000] )

'set xrange [2:0]' is supposed to have this effect, but a temporary 
override inside a plot command isn't.