--- a/build-aux/texinfo.tex	Sat Feb 02 16:15:13 2019 +0100
+++ b/build-aux/texinfo.tex	Sat Feb 02 08:04:06 2019 -0800
@@ -3,10 +3,10 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2019-01-03-15}
-
-%
-% Copyright 1985, 1986, 1988, 1990-2018 Free Software Foundation, Inc.
+\def\texinfoversion{2019-02-01.12}
+
+%
+% Copyright 1985, 1986, 1988, 1990-2019 Free Software Foundation, Inc.
 %
 % This texinfo.tex file is free software: you can redistribute it and/or
 % modify it under the terms of the GNU General Public License as
@@ -7515,7 +7515,7 @@
   \nonfillstart
   \tt % easiest (and conventionally used) font for verbatim
   % The \leavevmode here is for blank lines.  Otherwise, we would
-  % never \starttabox and the \egroup would end verbatim mode.
+  % never \starttabbox and the \egroup would end verbatim mode.
   \def\par{\leavevmode\egroup\box\verbbox\endgraf}%
   \tabexpand
   \setupmarkupstyle{verbatim}%
@@ -7578,9 +7578,12 @@
   {%
     \makevalueexpandable
     \setupverbatim
-    \indexnofonts       % Allow `@@' and other weird things in file names.
-    \wlog{texinfo.tex: doing @verbatiminclude of #1^^J}%
-    \input #1
+    {%
+      \indexnofonts       % Allow `@@' and other weird things in file names.
+      \wlog{texinfo.tex: doing @verbatiminclude of #1^^J}%
+      \edef\tmp{\noexpand\input #1 }
+      \expandafter
+    }\tmp
     \afterenvbreak
   }%
 }