積丹尼 Dan Jacobson Tue, 30 Jun 2020 07:30:41 -0700
Package: pngcrush Version: 1.8.13-0.1 File: /usr/share/man/man1/pngcrush.1.gz
The man page mentions -bit_depth, but you will get Ignoring invalid option: -bit_depth if you use it. Also --help doesn't list it. So it must not exist.
