Every empty line in the input will also result in an empty line
in the output and will thus inhibit filling of text. Make sure
you don't have any empty lines in your input file.
I'm just mentioning this because your emails here on the list
are showing up with an empty line following every line of text,
and it's unclear whether this is just a feature of the email
messages or whether your input file has the same issue.
So instead of
> This is
>
> .I "italic stuff" ,
>
> I hope.
you need
> This is
> .I "italic stuff" ,
> I hope.
I've left the email quote markers (>) in the above excerpts
to indicate the empty lines. They should of course not be
part of the input file.
