Decompressing from stdin

[fibersel]

4mc is able to compress from stdin, like this:
cat filename | ./4mc
Maybe I have just not specified necessary flag, but I have not figured out, how to decompress from stdin:
cat filename | ./4mc -d returns help.
It would be very convinient and i hope we will see this feature soon.

[noodlesbad]

4mc is able to decompress from stdin, as follows:

• to stdout:
  cat filename.4mc | ./4mc -d | cat
• redirect to file:
  cat filename.4mc | ./4mc -d > filename

[fibersel]

It looks non-intuitive, maybe we have to fix command line arguments parsing?