% Load plain if necessary, i.e., if running under initex.
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
%
-\def\texinfoversion{2003-01-30.17}
+\def\texinfoversion{2003-01-31.17}
%
% Copyright (C) 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
% therefore, no glue is inserted, and the space between the headline and
% the text is small, which looks bad.
%
+% Another complication is that the group might be very large. This can
+% cause the glue on the previous page to be unduly stretched, because it
+% does not have much material. In this case, it's better to add an
+% explicit \vfill so that the extra space is at the bottom. The
+% threshold for doing this is if the group is more than \vfilllimit
+% percent of a page (\vfilllimit can be changed inside of @tex).
+%
+\newbox\groupbox
+\def\vfilllimit{0.7}
+%
\def\group{\begingroup
\ifnum\catcode13=\active \else
\errhelp = \groupinvalidhelp
% above. But it's pretty close.
\def\Egroup{%
\egroup % End the \vtop.
+ % \dimen0 is the vertical size of the group's box.
+ \dimen0 = \ht\groupbox \advance\dimen0 by \dp\groupbox
+ % \dimen2 is how much space is left on the page (more or less).
+ \dimen2 = \pageheight \advance\dimen2 by -\pagetotal
+ % if the group doesn't fit on the current page, and it's a big big
+ % group, force a page break.
+ \ifdim \dimen0 > \dimen2
+ \ifdim \pagetotal < \vfilllimit\pageheight
+ \page
+ \fi
+ \fi
+ \copy\groupbox
\endgroup % End the \group.
}%
%
- \vtop\bgroup
+ \setbox\groupbox = \vtop\bgroup
% We have to put a strut on the last line in case the @group is in
% the midst of an example, rather than completely enclosing it.
% Otherwise, the interline space between the last line of the group
}%
% Add extra space after the heading -- either a line space or a
% paragraph space, whichever is more. (Some people like to set
- % \parskip to large values for some reason.)
+ % \parskip to large values for some reason.) Don't allow stretch, though.
\nobreak
\ifdim\parskip>\normalbaselineskip
\kern\parskip
% If there are two @def commands in a row, we'll have a \nobreak,
% which is there to keep the function description together with its
% header. But if there's nothing but headers, we want to allow a
- % break after all.
- \ifnum\lastpenalty=10000 \penalty0 \fi
+ % break after all. Check for penalty 10002 (inserted by
+ % \defargscommonending) instead of 10000, since the sectioning
+ % commands insert a \penalty10000, and we don't want to allow a break
+ % between a section heading and a defun.
+ \ifnum\lastpenalty=10002 \penalty0 \fi
\medbreak
%
% Define the \E... end token that this defining construct specifies
% Define @defun.
-% First, define the processing that is wanted for arguments of \defun
-% Use this to expand the args and terminate the paragraph they make up
+% This is called to end the arguments processing for all the @def... commands.
+%
+\def\defargscommonending{%
+ \interlinepenalty = 10000
+ \advance\rightskip by 0pt plus 1fil
+ \endgraf
+ \nobreak\vskip -\parskip
+ \penalty 10002 % signal to \parsebodycommon.
+}
+% This expands the args and terminates the paragraph they comprise.
+%
\def\defunargs#1{\functionparens \sl
% Expand, preventing hyphenation at `-' chars.
% Note that groups don't affect changes in \hyphenchar.
#1%
{\tensl\hyphenchar\font=45}%
\ifnum\parencount=0 \else \errmessage{Unbalanced parentheses in @def}\fi%
-\interlinepenalty=10000
-\advance\rightskip by 0pt plus 1fil
-\endgraf\nobreak\vskip -\parskip\nobreak
+ \defargscommonending
}
\def\deftypefunargs #1{%
% Use \boldbraxnoamp, not \functionparens, so that & is not special.
\boldbraxnoamp
\tclose{#1}% avoid \code because of side effects on active chars
-\interlinepenalty=10000
-\advance\rightskip by 0pt plus 1fil
-\endgraf\nobreak\vskip -\parskip\nobreak
+ \defargscommonending
}
% Do complete processing of one @defun or @defunx line already parsed.
% This is actually simple: just print them in roman.
% This must expand the args and terminate the paragraph they make up
\def\defvarargs #1{\normalparens #1%
-\interlinepenalty=10000
-\endgraf\nobreak\vskip -\parskip\nobreak}
+ \defargscommonending
+}
% @defvr Counter foo-count
\def\deftypevarheader #1#2{%
\dovarind#2 \relax% Make entry in variables index
\begingroup\defname {\defheaderxcond#1\relax$.$#2}{\putwordDeftypevar}%
-\interlinepenalty=10000
-\endgraf\nobreak\vskip -\parskip\nobreak
+ \defargscommonending
\endgroup}
\def\dovarind#1 #2\relax{\doind{vr}{\code{#1}}}
\def\deftypevrheader #1#2#3{\dovarind#3 \relax%
\begingroup\defname {\defheaderxcond#2\relax$.$#3}{#1}
-\interlinepenalty=10000
-\endgraf\nobreak\vskip -\parskip\nobreak
+ \defargscommonending
\endgroup}
% Now define @deftp
% NAME-pg (the page number), and NAME-snt (section number and type).
% Called from \foonoderef.
%
-% We have to set \atdummies so commands such as @code in a section title
-% aren't expanded. Could we just stuff the args into \toks registers
-% and avoid expansion that way?
+% We have to set \indexdummies so commands such as @code in a section
+% title aren't expanded. It would be nicer not to expand the titles in
+% the first place, but there's so many layers that that is hard to do.
%
% Likewise, use \turnoffactive so that punctuation chars such as underscore
% and backslash work in node names.
projects / pspp / commitdiff