I'm attaching a test script that can eventually be used to verify this bug report.  Calling newplot with an input axes handle should not change gca().

close all;

fig1 = figure;
hax1 = axes;
printf ("hax1 = %f\n", double (hax1));
fig2 = figure;
hax2 = axes;
printf ("hax2 = %f\n", double (hax2));
printf ("gca before newplot = %f\n", double (gca));
h = newplot (hax1);
printf ("gca after newplot = %f\n", double (gca));
printf ("handle returned from newplot (should be hax1) = %f\n", double (h));

(file #53165)

Verified the changeset.  Marking as Fixed and closing report.

I see no reason for newplot to affect the figure currentaxes property, so the simple attached change should do the trick.



(file #52768)

consider the following code:

ax = subplot(1,2,1) ;
plot(rand(5,1), rand(5,1))
subplot(1,2,2) ;
get(gca, 'position')
plot(ax, rand(5,1), rand(5,1))
get(gca, 'position')

It should show two identical position values because the current axis has not changed. It does so in Matlab but not in Octave.