[Octave-bug-tracker] [bug #49017] drawing grid uses RGBA color syntax incompatible with gnuplot 4.4

[Mike Miller]

Follow-up Comment #4, bug #49017 (project octave):

Indeed, setting alphastr to an empty string unconditionally gets rid of the
error for me.

There is a similar error, but not due to the same cause, in "demo trimesh 1".
This error occurs with gnuplot 4.4 but not with gnuplot 4.6:


>> demo trimesh 1
trimesh example 1:
 clf;
 colormap ("default");
 old_state = rand ("state");
 restore_state = onCleanup (@() rand ("state", old_state));
 rand ("state", 10);
 N = 10;
 x = 3 - 6 * rand (N, N);
 y = 3 - 6 * rand (N, N);
 z = peaks (x, y);
 tri = delaunay (x(:), y(:));
 trimesh (tri, x(:), y(:), z(:));


gnuplot> splot ..... ## extremely long command sequence
                                                                              
                                                                              
                        ^
         line 2588: expected a known color name or a string of form "#RRGGBB"




I see several instances of what look to me like bad color specs throughout the
gnuplot input:


lc rgb "#30b2391cb"
lc rgb "#30b239310"


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