--- a/build-aux/texinfo.tex
+++ b/build-aux/texinfo.tex
@@ -3,7 +3,7 @@
 % Load plain if necessary, i.e., if running under initex.
 \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
 %
-\def\texinfoversion{2010-04-22.18}
+\def\texinfoversion{2010-04-23.06}
 %
 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
@@ -2741,11 +2741,11 @@
 
 % Accents: @, @dotaccent @ringaccent @ubaraccent @udotaccent
 % Others are defined by plain TeX: @` @' @" @^ @~ @= @u @v @H.
-\let\, = \c
-\let\dotaccent = \.
+\let\, = \ptexc
+\let\dotaccent = \ptexdot
 \def\ringaccent#1{{\accent23 #1}}
-\let\tieaccent = \t
-\let\ubaraccent = \b
+\let\tieaccent = \ptext
+\let\ubaraccent = \ptexb
 \let\udotaccent = \d
 
 % Other special characters: @questiondown @exclamdown @ordf @ordm