>> BTW, doesn't
>> http://git.savannah.gnu.org/cgit/groff.git/tree/tmac/strip.sed still
>> have a `#' comment from before Brandon's change? tmac/fixmacros.sed
>> also has one.
>
> That's true:
>
> 222812ab4 (Werner LEMBERG 2006-06-06 16:49:39 +0000 4) # strip comment
That probably predates my experience with the autoconf tools...
The last autoconf version is 5 years old; however, even in current git
the info about sed limitations w.r.t. comments is still present. No
idea how relevant this is today.
Werner