set_palette caused error

[Mikael Walhelm]

been trying to get domain coloring and noticed that
.set_palette(PaletteType::Custom(&[(1.0, 1.0, 1.0, 1.0)]))
fails with

gnuplot> set palette defined (1.000000000000e0 1.000000000000e0 1.000000000000e0 1.000000000000e0)
                                                                                                 ^
         line 0: invalid palette syntax

[SiegeLord]

Thanks for reporting! You need at least two palette entries. The documentation/internal correctness check was wrong.