--- a/build-aux/texinfo.tex	Tue Oct 06 15:06:11 2015 -0700
+++ b/build-aux/texinfo.tex	Sat Oct 10 08:16:48 2015 -0700
@@ -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{2015-10-06.21}
+\def\texinfoversion{2015-10-09.18}
 %
 % Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
 % 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
@@ -530,14 +530,13 @@
 %
 \def\finishparsearg#1 \ArgTerm{\expandafter\argtorun\expandafter{#1}}
 
+
+% \parseargdef - define a command taking an argument on the line
+%
 % \parseargdef\foo{...}
 %	is roughly equivalent to
 % \def\foo{\parsearg\Xfoo}
 % \def\Xfoo#1{...}
-%
-% Actually, I use \csname\string\foo\endcsname, ie. \\foo, as it is my
-% favourite TeX trick.  --kasal, 16nov03
-
 \def\parseargdef#1{%
   \expandafter \doparseargdef \csname\string#1\endcsname #1%
 }
@@ -9349,7 +9348,8 @@
 % @documentencoding sets the definition of non-ASCII characters
 % according to the specified encoding.
 %
-\parseargdef\documentencoding{%
+\def\documentencoding{\parseargusing\filenamecatcodes\documentencodingzzz}
+\def\documentencodingzzz#1{%
   % Encoding being declared for the document.
   \def\declaredencoding{\csname #1.enc\endcsname}%
   %
@@ -10076,6 +10076,9 @@
 
   \DeclareUnicodeCharacter{02DB}{\ogonek{ }}
 
+  % Greek letters
+  \DeclareUnicodeCharacter{03C0}{\ensuremath\pi}
+
   \DeclareUnicodeCharacter{1E02}{\dotaccent{B}}
   \DeclareUnicodeCharacter{1E03}{\dotaccent{b}}
   \DeclareUnicodeCharacter{1E04}{\udotaccent{B}}
@@ -10203,6 +10206,7 @@
   \DeclareUnicodeCharacter{1EF8}{\~Y}
   \DeclareUnicodeCharacter{1EF9}{\~y}
 
+  % Punctuation
   \DeclareUnicodeCharacter{2013}{--}
   \DeclareUnicodeCharacter{2014}{---}
   \DeclareUnicodeCharacter{2018}{\quoteleft}
@@ -10214,18 +10218,34 @@
   \DeclareUnicodeCharacter{2020}{\ensuremath\dagger}
   \DeclareUnicodeCharacter{2021}{\ensuremath\ddagger}
   \DeclareUnicodeCharacter{2022}{\bullet}
+  \DeclareUnicodeCharacter{202F}{\thinspace}
   \DeclareUnicodeCharacter{2026}{\dots}
   \DeclareUnicodeCharacter{2039}{\guilsinglleft}
   \DeclareUnicodeCharacter{203A}{\guilsinglright}
+
   \DeclareUnicodeCharacter{20AC}{\euro}
 
   \DeclareUnicodeCharacter{2192}{\expansion}
   \DeclareUnicodeCharacter{21D2}{\result}
 
+  % Mathematical symbols
+  \DeclareUnicodeCharacter{2200}{\ensuremath\forall}
+  \DeclareUnicodeCharacter{2203}{\ensuremath\exists}
+  \DeclareUnicodeCharacter{2208}{\ensuremath\in}
   \DeclareUnicodeCharacter{2212}{\minus}
   \DeclareUnicodeCharacter{2217}{\point}
+  \DeclareUnicodeCharacter{221E}{\ensuremath\infty}
   \DeclareUnicodeCharacter{2225}{\ensuremath\parallel}
+  \DeclareUnicodeCharacter{2227}{\ensuremath\wedge}
+  \DeclareUnicodeCharacter{2229}{\ensuremath\cap}
   \DeclareUnicodeCharacter{2261}{\equiv}
+  \DeclareUnicodeCharacter{2264}{\ensuremath\leq}
+  \DeclareUnicodeCharacter{2265}{\ensuremath\geq}
+  \DeclareUnicodeCharacter{2282}{\ensuremath\subset}
+  \DeclareUnicodeCharacter{2287}{\ensuremath\supseteq}
+
+  \global\mathchardef\checkmark="1370 % actually the square root sign
+  \DeclareUnicodeCharacter{2713}{\ensuremath\checkmark}
 }% end of \utfeightchardefs
 
 % US-ASCII character definitions.