[Groff] Re: What's missing for Unicode support of groff?

[Michail Vidiassov]

Dear Werner,

On Sun, 11 Dec 2005, Werner LEMBERG wrote:

> > I have compiled groff-current on MacOS X 10.4.3 and stepped over the
> > following bug
> >
> >   makeinfo (GNU texinfo) 4.8
>
> My texinfo reports the same.
>
> > configure does not parse the version string correctly and complains
> > that version is too old (instead of admitting the error).
>
> This is interesting, since it looks like a problem with sed.  You are
> using BSD sed, right?  Please show us what the following expression
> yields:
>
>  makeinfo --version | sed 's/^.* \([^ ]\+\)$/\1/;1q'
>
> with GNU sed, I get `4.8'.  Then I have
>
>  echo 4.8 | sed 's/^\([0-9]*\).*$/\1/'
>
>    ==> 4
>
>  echo 4.8 | sed 's/^[^.]\+\(.*\)$/\1/'
>
>    ==> .8
>
>  echo .8 | sed 's/\.\([0-9]*\).*$/\1/'
>
>    ==> 8
>
> The various sed expressions are there to handle various possible
> version info strings like `4', `4.8', or `4.8.1'.
>
> Before applying your patch I want to know the reason for the failure,
> probably reporting it to both the BSD sed and autoconf people.  Maybe
> my original regexps are non-POSIX...

Mac sed is the BSD sed (OS X takes a lot from FreeBSD).
If I install GNU sed I get the same results as you.

makeinfo --version | sed 's/^.* \([^ ]\+\)$/\1/;1q'
makeinfo (GNU texinfo) 4.8
echo 4.8 | sed 's/^\([0-9]*\).*$/\1/'
4
echo 4.8 | sed 's/^[^.]\+\(.*\)$/\1/'
4.8
echo .8 | sed 's/\.\([0-9]*\).*$/\1/' 
8

              Sincerely, Michail