#626 bug in -asc-cdl command

[Hakan]

Hello,

accoring to http://www.graphicsmagick.org/GraphicsMagick.html

this comand is the unity (no change) specification
gm convert -asc-cdl "1.0,0.0,1.0:1.0,0.0,1.0:1.0,0.0,1.0:1.0"

the command creates an empty image. I tested with Windows 64bit command line GraphicsMagick 1.3.35 2020-02-23 Q8

leaving the last parameter (saturation) out, creates an unchanged image

how do I add saturation to existing colors without causing a change on white background ? (increase strength of existing colors ?)