Re: [PATCH 2/2] doc: remove GNU_ROFF option

> By default, groff converts apostrophes in troff source to Unicode
> apostrophes.  This is helpful and desirable when being used as a
> typesetter, since it makes the output much cleaner and more readable,
> but it is a problem in manual pages, since apostrophes are often used
> around shell commands and these should remain in their ASCII form for
> compatibility with the shell.
>
> Fortunately, the DocBook stylesheets contain a workaround for this case:
> they detect the special .g number register, which is set only when using
> groff, and they define a special macro for apostrophes based on whether
> or not it is set and use that macro to write out the proper character.
> As a result, the DocBook stylesheets handle all cases correctly
> automatically, whether the user is using groff or not, unlike our
> GNU_ROFF code.
>
> Additionally, this functionality was implemented in 2010.  Since nobody
> is shipping security support for an operating system that old anymore,
> we can just safely assume that the user has upgraded their system in the
> past decade and remove the GNU_ROFF option and its corresponding
> stylesheet altogether.
> ---