(\HEADINGSdouble, \HEADINGSsingle,

HEADINGSdoubleafter, \HEADINGSsingleafter, \CHAPPAGoff,
\CHAPPAGon, \CHAPPAGodd): Set \contentsalignmacro, analogous to
\pagealignmacro.
(\startcontents): Call \contentsalignmacro instead of \pagealignmacro.

texinfo.tex

@@ -1426,7 +1426,8 @@ where each line of input produces a line of output.}
 % @headings after	turns on double-sided headings after this page.
 % @headings doubleafter	turns on double-sided headings after this page.
 % @headings singleafter turns on single-sided headings after this page.
-% By default, they are off.
+% By default, they are off at the start of a document,
+% and turned `on' after @end titlepage.
 
 \def\headings #1 {\csname HEADINGS#1\endcsname}
 
@@ -1440,22 +1441,24 @@ where each line of input produces a line of output.}
 % title on inside top of left hand pages, and page numbers on outside top
 % edge of all pages.
 \def\HEADINGSdouble{
-%\pagealignmacro
 \global\pageno=1
 \global\evenfootline={\hfil}
 \global\oddfootline={\hfil}
 \global\evenheadline={\line{\folio\hfil\thistitle}}
 \global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
 }
+\let\contentsalignmacro = \chappager
+
 % For single-sided printing, chapter title goes across top left of page,
 % page number on top right.
 \def\HEADINGSsingle{
-%\pagealignmacro
 \global\pageno=1
 \global\evenfootline={\hfil}
 \global\oddfootline={\hfil}
 \global\evenheadline={\line{\thischapter\hfil\folio}}
 \global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
 }
 \def\HEADINGSon{\HEADINGSdouble}
 
@@ -1466,6 +1469,7 @@ where each line of input produces a line of output.}
 \global\oddfootline={\hfil}
 \global\evenheadline={\line{\folio\hfil\thistitle}}
 \global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chapoddpage
 }
 
 \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
@@ -1474,6 +1478,7 @@ where each line of input produces a line of output.}
 \global\oddfootline={\hfil}
 \global\evenheadline={\line{\thischapter\hfil\folio}}
 \global\oddheadline={\line{\thischapter\hfil\folio}}
+\global\let\contentsalignmacro = \chappager
 }
 
 % Subroutines used in generating headings
@@ -2908,15 +2913,18 @@ width0pt\relax} \fi
 \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
 
 \def\CHAPPAGoff{
+\global\let\contentsalignmacro = \chappager
 \global\let\pchapsepmacro=\chapbreak
 \global\let\pagealignmacro=\chappager}
 
 \def\CHAPPAGon{
+\global\let\contentsalignmacro = \chappager
 \global\let\pchapsepmacro=\chappager
 \global\let\pagealignmacro=\chappager
 \global\def\HEADINGSon{\HEADINGSsingle}}
 
 \def\CHAPPAGodd{
+\global\let\contentsalignmacro = \chapoddpage
 \global\let\pchapsepmacro=\chapoddpage
 \global\let\pagealignmacro=\chapoddpage
 \global\def\HEADINGSon{\HEADINGSdouble}}
@@ -3027,7 +3035,11 @@ width0pt\relax} \fi
 
 \newskip\contentsrightmargin \contentsrightmargin=1in
 \def\startcontents#1{%
-   \pagealignmacro
+   % If @setchapternewpage on, and @headings double, the contents should
+   % start on an odd page, unlike chapters.  Thus, we maintain
+   % \contentsalignmacro in parallel with \pagealignmacro.
+   % From: Torbjorn Granlund <tege@matematik.su.se>
+   \contentsalignmacro
    \immediate\closeout \contentsfile
    \ifnum \pageno>0
       \pageno = -1		% Request roman numbered pages.
@@ -4193,7 +4205,8 @@ width0pt\relax} \fi
 % The trailing space in the following definition for supereject is
 % vital for proper filling; pages come out unaligned when you do a
 % pagealignmacro call if that space before the closing brace is
-% removed.
+% removed. (Generally, numeric constants should always be followed by a
+% space to prevent strange expansion errors.)
 \def\supereject{\par\penalty -20000\footnoteno =0 }
 
 % @footnotestyle is meaningful for info output only..