% Load plain if necessary, i.e., if running under initex.
\expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
%
-\def\texinfoversion{2011-12-24.11}
+\def\texinfoversion{2012-01-19.16}
%
% Copyright 1985, 1986, 1988, 1990, 1991, 1992, 1993, 1994, 1995,
% 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006,
}
}
+% @inlinefmt{FMTNAME,PROCESSED-TEXT} and @inlineraw{FMTNAME,RAW-TEXT}.
+% Ignore unless FMTNAME == tex; then it is like @iftex and @tex,
+% except specified as a normal braced arg, so no newlines to worry about.
+%
+\def\outfmtnametex{tex}
+%
+\long\def\inlinefmt#1{\doinlinefmt #1,\finish}
+\long\def\doinlinefmt#1,#2,\finish{%
+ \def\inlinefmtname{#1}%
+ \ifx\inlinefmtname\outfmtnametex \ignorespaces #2\fi
+}
+% For raw, must switch into @tex before parsing the argument, to avoid
+% setting catcodes prematurely. Doing it this way means that, for
+% example, @inlineraw{html, foo{bar} gets a parse error instead of being
+% ignored. But this isn't important because if people want a literal
+% *right* brace they would have to use a command anyway, so they may as
+% well use a command to get a left brace too. We could re-use the
+% delimiter character idea from \verb, but it seems like overkill.
+%
+\long\def\inlineraw{\tex \doinlineraw}
+\long\def\doinlineraw#1{\doinlinerawtwo #1,\finish}
+\def\doinlinerawtwo#1,#2,\finish{%
+ \def\inlinerawname{#1}%
+ \ifx\inlinerawname\outfmtnametex \ignorespaces #2\fi
+ \endgroup % close group opened by \tex.
+}
+
\message{glyphs,}
% and logos.
-% @@ prints an @.
+% @@ prints an @, as does @atchar{}.
\def\@{\char64 }
+\let\atchar=\@
-% Used to generate quoted braces. Unless we're in typewriter, use
-% \ecfont because the CM text fonts do not have braces, and we don't
-% want to switch into math.
+% @{ @} @lbracechar{} @rbracechar{} all generate brace characters.
+% Unless we're in typewriter, use \ecfont because the CM text fonts do
+% not have braces, and we don't want to switch into math.
\def\mylbrace{{\ifmonospace\else\ecfont\fi \char123}}
\def\myrbrace{{\ifmonospace\else\ecfont\fi \char125}}
-\let\{=\mylbrace
-\let\}=\myrbrace
+\let\{=\mylbrace \let\lbracechar=\{
+\let\}=\myrbrace \let\rbracechar=\}
\begingroup
% Definitions to produce \{ and \} commands for indices,
% and @{ and @} for the aux/toc files.
\def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
\def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
\def\ref#1{\xrefX[#1,,,,,,,]}
+%
+\newbox\topbox
+\newbox\printedrefnamebox
+\newbox\printedmanualbox
+%
\def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
\unsepspaces
- \def\printedmanual{\ignorespaces #5}%
+ %
\def\printedrefname{\ignorespaces #3}%
- \setbox1=\hbox{\printedmanual\unskip}%
- \setbox0=\hbox{\printedrefname\unskip}%
- \ifdim \wd0 = 0pt
+ \setbox\printedrefnamebox = \hbox{\printedrefname\unskip}%
+ %
+ \def\printedmanual{\ignorespaces #5}%
+ \setbox\printedmanualbox = \hbox{\printedmanual\unskip}%
+ %
+ % If the printed reference name (arg #3) was not explicitly given in
+ % the @xref, figure out what we want to use.
+ \ifdim \wd\printedrefnamebox = 0pt
% No printed node name was explicitly given.
\expandafter\ifx\csname SETxref-automatic-section-title\endcsname \relax
- % Use the node name inside the square brackets.
+ % Not auto section-title: use node name inside the square brackets.
\def\printedrefname{\ignorespaces #1}%
\else
- % Use the actual chapter/section title appear inside
- % the square brackets. Use the real section title if we have it.
- \ifdim \wd1 > 0pt
- % It is in another manual, so we don't have it.
+ % Auto section-title: use chapter/section title inside
+ % the square brackets if we have it.
+ \ifdim \wd\printedmanualbox > 0pt
+ % It is in another manual, so we don't have it; use node name.
\def\printedrefname{\ignorespaces #1}%
\else
\ifhavexrefs
- % We know the real title if we have the xref values.
+ % We (should) know the real title if we have the xref values.
\def\printedrefname{\refx{#1-title}{}}%
\else
% Otherwise just copy the Info node name.
\iffloat\Xthisreftitle
% If the user specified the print name (third arg) to the ref,
% print it instead of our usual "Figure 1.2".
- \ifdim\wd0 = 0pt
+ \ifdim\wd\printedrefnamebox = 0pt
\refx{#1-snt}{}%
\else
\printedrefname
%
% if the user also gave the printed manual name (fifth arg), append
% "in MANUALNAME".
- \ifdim \wd1 > 0pt
+ \ifdim \wd\printedmanualbox > 0pt
\space \putwordin{} \cite{\printedmanual}%
\fi
\else
% node/anchor (non-float) references.
- %
- % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
- % insert empty discretionaries after hyphens, which means that it will
- % not find a line break at a hyphen in a node names. Since some manuals
- % are best written with fairly long node names, containing hyphens, this
- % is a loss. Therefore, we give the text of the node name again, so it
- % is as if TeX is seeing it for the first time.
- \ifdim \wd1 > 0pt
- \putwordSection{} ``\printedrefname'' \putwordin{} \cite{\printedmanual}%
+ %
+ % If we use \unhbox to print the node names, TeX does not insert
+ % empty discretionaries after hyphens, which means that it will not
+ % find a line break at a hyphen in a node names. Since some manuals
+ % are best written with fairly long node names, containing hyphens,
+ % this is a loss. Therefore, we give the text of the node name
+ % again, so it is as if TeX is seeing it for the first time.
+ %
+ % Cross-manual reference. Only include the "Section ``foo'' in" if
+ % the foo is neither missing or Top. Thus, @xref{,,,foo,The Foo Manual}
+ % outputs simply "see The Foo Manual".
+ \ifdim \wd\printedmanualbox > 0pt
+ % What is the 7sp about? The idea is that we also want to omit
+ % the Section part if we would be printing "Top", since they are
+ % clearly trying to refer to the whole manual. But, this being
+ % TeX, we can't easily compare strings while ignoring the possible
+ % spaces before and after in the input. By adding the arbitrary
+ % 7sp, we make it much less likely that a real node name would
+ % happen to have the same width as "Top" (e.g., in a monospaced font).
+ % I hope it will never happen in practice.
+ %
+ % For the same basic reason, we retypeset the "Top" at every
+ % reference, since the current font is indeterminate.
+ %
+ \setbox\topbox = \hbox{Top\kern7sp}%
+ \setbox2 = \hbox{\ignorespaces \printedrefname \unskip \kern7sp}%
+ \ifdim \wd2 > 7sp
+ \ifdim \wd2 = \wd\topbox \else
+ \putwordSection{} ``\printedrefname'' \putwordin{}\space
+ \fi
+ \fi
+ \cite{\printedmanual}%
\else
+ % Reference in this manual.
+ %
% _ (for example) has to be the character _ for the purposes of the
% control sequence corresponding to the node, but it has to expand
% into the usual \leavevmode...\vrule stuff for purposes of
\setbox2 = \hbox{\ignorespaces \refx{#1-snt}{}}%
\ifdim \wd2 > 0pt \refx{#1-snt}\space\fi
}%
- % output the `[mynode]' via a macro so it can be overridden.
+ % output the `[mynode]' via the macro below so it can be overridden.
\xrefprintnodename\printedrefname
%
% But we always want a comma and a space:
% In texinfo, backslash is an active character; it prints the backslash
% in fixed width font.
-\catcode`\\=\active
-@def@normalbackslash{{@tt@backslashcurfont}}
+\catcode`\\=\active % @ for escape char from now on.
+
+% The story here is that in math mode, the \char of \backslashcurfont
+% ends up printing the roman \ from the math symbol font (because \char
+% in math mode uses the \mathcode, and plain.tex sets
+% \mathcode`\\="026E). It seems better for @backslashchar{} to always
+% print a typewriter backslash, hence we use an explicit \mathchar,
+% which is the decimal equivalent of "715c (class 7, e.g., use \fam;
+% ignored family value; char position "5C). We can't use " for the
+% usual hex value because it has already been made active.
+@def@normalbackslash{{@tt @ifmmode @mathchar29020 @else @backslashcurfont @fi}}
+@let@backslashchar = @normalbackslash % @backslashchar{} is for user documents.
+
% On startup, @fixbackslash assigns:
% @let \ = @normalbackslash
-
% \rawbackslash defines an active \ to do \backslashcurfont.
% \otherbackslash defines an active \ to be a literal `\' character with
-% catcode other.
+% catcode other. We switch back and forth between these.
@gdef@rawbackslash{@let\=@backslashcurfont}
@gdef@otherbackslash{@let\=@realbackslash}
@def@normalslash{/}
% These look ok in all fonts, so just make them not special.
+% @hashchar{} gets its own user-level command, because of #line.
@catcode`@& = @other @def@normalamp{&}
@catcode`@# = @other @def@normalhash{#}
@catcode`@% = @other @def@normalpercent{%}
+@let @hashchar = @normalhash
+
@c Finally, make ` and ' active, so that txicodequoteundirected and
@c txicodequotebacktick work right in, e.g., @w{@code{`foo'}}. If we
@c don't make ` and ' active, @code will not get them as active chars.
projects / gnulib.git / blobdiff