[Groff] refer warnings

[Joerg van den Hoff]

hi,

after  upgrading to 1.19.2 I get new warnings from refer:

refer:./tt:4: nothing to reference (probably `bibliography' before `sort')

if the document `tt' contains the directive
.R1
accumulate
.R2
but does _not_ include references. (the situation arises, because I 
always use a standard header file (including the refer .R1/.R2 
directive) and a standard processing queue (including all preprocessors 
-- yes, I probably should use `grog', but ...).)

I don't see that the warning is really in place: after all `refer' 
simply has nothing to do - other preprocessors are quite content with 
this situation (as humans sometimes are, too) and simply copy their 
input to output.


why does refer have a problem here?
can I switch off this warning?

regards,

joerg