in reply to Re^2: Creating X BitMap (XBM) images with directional gradients
in thread Creating X BitMap (XBM) images with directional gradients

Yes. The two image libraries referred to don't seem to be excellent at parsing C code (which isn't entirely unreasonable), so the above change gives them a little extra help.
  • Comment on Re^3: Creating X BitMap (XBM) images with directional gradients