And, a minor cosmetic "glitch":
There's a "\n" missing in the long help text (-L) at the shaping section (before "n, nowarp"):
-s, --shaping modify settings for noise shaping used in bit-removal:
a, altfilter enable alternative adaptive shaping filter method.
c, cubic enable cubic interpolation when defining filter shape
e, extra additional white noise to add during creation of filter
f, fixed disable adaptive noise shaping (use fixed shaping)
h, hybrid enable hybrid alternative to default adaptive noise shaping
method. Uses all available calculated analyses to create
the desired noise filter shape rather than only those for
1.5ms and 20ms FFT analyses. n, nowarp disable warped noise shaping (use linear frequency shaping)