by dot work with verbose=T, closes #3196 (#4359)
by dot work with verbose=T, closes #3196 (#4359)


jangorecki/data.table,jangorecki/data.table,vlulla/data.table,vlulla/data.table,jangorecki/data.table,Rdatatable/data.table,vlulla/data.table,Rdatatable/data.table,Rdatatable/data.table,Rdatatable/data.table,vlulla/data.table,jangorecki/data.table