[Rd] problem with \eqn (PR#8322)

[ross@biostat.ucsf.edu]

Full_Name: Ross Boylan
Version: 2.2.0
OS: Linux
Submission from: (NULL) (65.175.48.58)


  \eqn{{\bf\beta}_j}{b(j)} in my .Rd file produces this error
--------------------------------------------
! Missing $ inserted.
<inserted text> 
                $
l.7 \eqn{{\bf\beta}_j}{\bf\beta}_
                                 jnormal-bracket5bracket-normal{b(j)}
--
! Missing $ inserted.
<inserted text> 
                $
l.16 
     
--
! Missing } inserted.
<inserted text> 
                }
l.16 
     
--
! Extra }, or forgotten \endgroup.
\par ...m \@noitemerr {\@@par }\fi \else {\@@par }
                                                  \fi 
l.16 
-------------------------------
I think this is a bug.  A query to r-help has produced no response.

Note that \bf\beta seems to have been doubled.

Currently on R 2.2.0.final-4 on Debian.  I think I've seen this with
many prior versions too.