avoid problems making the texinfo distribution.
-\input texinfo @c -*-texinfo-*-
+\input texinfo.tex @c -*-texinfo-*-
+@c We must \input texinfo.tex instead of texinfo, otherwise make
+@c distcheck in the Texinfo distribution fails, because the texinfo Info
+@c file is made first, and texi2dvi must include . first in the path.
@comment %**start of header
@setfilename info.info
@settitle Info