[Groff] preparing for nroff vrs html output?

[groff]

I'm trying to create a groff document using -ms that will format correctly for 
postscript, nroff, and html output. The problem is that html.tmac uses 
".nroff", so any nroff-specific formatting is included in addition to 
instructions that should only apply to HTML output.

For example, I'd like to format a list in a different way, depending on the 
output:

        .if t .IP "\s-2\(bu\s+2"
        .if n .IP "*" 1i
        .if '\*[.T]'html' .LI
        List element 1

This works fine for troff or nroff output. However, for html output, I get an
extra <P> due to the ".if n" test, before the <LI> begins.

Any suggestions?

----
Mark Bergman            
http://pgpkeys.mit.edu:11371/pks/lookup?op=get&address@hidden