Fails to decode checked variant

[Talkless]

Non-checked version works:

$ ./base58 "hello world" 
StV1DL6CwTryKyV
$ ./base58 -d 11 StV1DL6CwTryKyV
hello world

Check fails:

$ ./base58 -c "hello world"
3vQB7B6MrGQZaxCuFg4oh
$ ./base58 -d 11 -c 3vQB7B6MrGQZaxCuFg4oh
<nothing>
$ echo $?
2

Or am I using CLI incorreclty? Though originally detected issue with library to - was unable to decode there too.

[Talkless]

Wait, I was using luke-jr/libbase58...

EDIT: same with bitcoin/libbase58

[Talkless]

OK it seems I have to specify lenght + checkum_length, and I get whole decoded string including checksum:

$ ./base58 -d 15 -c 3vQB7B6MrGQZaxCuFg4oh
hello world�bԸ

Maybe this specific could be documented? I see there's word "cannonical base58 length" mentioned, but not sure how to interpret it.