make-release.sh: properly disable SGR formatting

The grotty -c option disables the SGR formatting, but it enables
overstrike (^H) formatting instead. The -buo options disable the use of
overstriking for bold, underline, and overstriking per se, respectively.
Altogether these make grotty produce plain text.

I'm not sure why I've added -bu previously, but I suspect it's because I
was testing on Debian, which enables -c by default. The groff in the
upcoming Debian 13 will no longer do that btw.

Author: DankRank

make-release.sh

@@ -14,7 +14,7 @@ mkdir $releasepath-pdbs
 
 for i in thanm thanm.old thecl thdat thmsg thstd; do
   echo $i
-  echo .ds doc-default-operating-system thtk | groff -mdoc -Tutf8 -P -bu - $i/$i.1 | perl -pe 's/\e\[?.*?[\@-~]//g' | unix2dos > $releasepath/README.$i.txt
+  echo .ds doc-default-operating-system thtk | groff -mdoc -Tutf8 -P-buoc - $i/$i.1 | unix2dos > $releasepath/README.$i.txt
   cp build/$i/RelWithDebInfo/$i.exe $releasepath/
   cp build/$i/RelWithDebInfo/$i.pdb $releasepath-pdbs/
 done