bug#7843: 24.0.50; woman leaves \& in man page header

[Eli Zaretskii]

> From: Glenn Morris <rgm@gnu.org>
> Date: Fri, 09 Sep 2011 03:07:57 -0400
> Cc: 7843@debbugs.gnu.org, Eric Hanchrow <eric.hanchrow@gmail.com>
> 
> It seems to cause problems. man.1 (attached) renders worse in the
> current trunk than in Emacs 23.3. The woman-log buffer has many entries
> that do not appear in 23.3:
> 
> **  Escape ignored: \- -> -
>     [many times]
> **  Escape ignored: \f -> f
>     [many times]
> **  ..  request ignored!
>     [several times]
> **  Numeric/register argument error: w'man 'u

My version of Groff (1.19) also emits quite a bit of diagnostics for
that man page.

> An example of a section that renders worse is
> 
>    The following conventions apply  to the SYNOPSIS section and
>    can be used as a guide in other sections.
> 
>    fBbold textfR@T{
>    type exactly as shown.
>    T}

So does Groff (invoked by my clone of `man'):

 Reformatting page.  Wait...tbl:/usr/man/man1/man.1:182: unrecognised format `1'
 tbl:/usr/man/man1/man.1:182: giving up on this table
 tbl:/usr/man/man1/man.1:243: unrecognised format `\'
 tbl:/usr/man/man1/man.1:243: giving up on this table