doc-opt-col=0,opt-doc-col=0,header-col=0,rmargin=1' \
$(top_builddir)/src/tar --usage | \
sed -n 's/^\[--\([^]\=\[]*\).*/\1/p' | sort | uniq > opts.$$$$;\
- sed -n 's/@opindex *\([^,]*\)$$/\1/p;s/@opindex *\(.*\),.*/\1/p' \
- $(info_TEXINFOS) | sort | uniq > docs.$$$$;\
+ $(MAKEINFO) $(AM_MAKEINFOFLAGS) $(MAKEINFOFLAGS) -I $(srcdir) -E - \
+ $(info_TEXINFOS) | \
+ sed -n '/^@macro/,/^@end macro/d;s/@opindex *\([^@,]*\).*/\1/p' \
+ | sort | uniq > docs.$$$$;\
(echo 'Not documented options:';\
join -v1 opts.$$$$ docs.$$$$;\
echo 'Non-existing options:';\