yafc ftp client

Hello

Does anyone use yafc ftp client ?
I was not happy with gFTP be course it's slow and it crashes all the time. So i have compiled successfully
yafc command line ftp client. Yafc is working great but remote tab completion its not working alltough it should
be one of its features. In it's configuration file "yafcrc" i have uncommented following option:

# use tab to complete remote files
remote_completion on

I'm not sure how remote tab completion works but i guess it downloads directory listing from remote host and
saves it on some configuration file. Or is it using remote host bash tab completion ?
And they are using sh or have disabled shell for users ? I think this is not the case be course
i have bash enabled on my own ftp server and tab completion is not working here also.
Some dudes use very long directory and file names, it might contain few sentences with whitespaces,
and you can imagine how frustrating is to escape manually those whitespaces.
anyway i would like use yafc but they don't have much documentation available.
They have somekind of forum also but they don't seem to have much activity there.
I'm sure i'm missing something obvious as always.

Thanks