Commit 73eff6effe0330caee538e47caa2f0c8f1d715dd
2021-11-30T15:06:54
cjpeg: auto. compr. gray BMP/GIF-->grayscale JPEG aa7459050d7a50e1d8a99488902d41fbc118a50f was supposed to enable this for BMP input images but didn't, due to a similar oversight to the one fixed in the previous commit.