The subject says it all. The "-g|--grepable" option of smbclient is not documented in the manpage.
Created attachment 3850 [details]
Proposed patch to XML docs
That patch applies to smbclient.1.xml in 3.3.0rc2
Fixed with 6752d78 (master) and friends in all branches.
Will be included in 3.3.0.
Thanks for the patch! :-)