\definedummyword{ae}%
\definedummyword{l}%
\definedummyword{oe}%
- \definedummyword{o}%
- \definedummyword{ss}%
- %
- % Although these internal commands shouldn't show up, sometimes they do.
- \definedummyword{bf}%
- \definedummyword{gtr}%
- \definedummyword{hat}%
- \definedummyword{less}%
- \definedummyword{sf}%
- \definedummyword{sl}%
- \definedummyword{tclose}%
- \definedummyword{tt}%
- %
- % Texinfo font commands.
- \definedummyword{b}%
- \definedummyword{i}%
- \definedummyword{r}%
- \definedummyword{sc}%
- \definedummyword{t}%
- %
- \definedummyword{TeX}%
- \definedummyword{acronym}%
- \definedummyword{cite}%
- \definedummyword{code}%
- \definedummyword{command}%
- \definedummyword{dfn}%
- \definedummyword{dots}%
- \definedummyword{emph}%
- \definedummyword{env}%
- \definedummyword{file}%
- \definedummyword{kbd}%
- \definedummyword{key}%
- \definedummyword{math}%
- \definedummyword{option}%
- \definedummyword{samp}%
- \definedummyword{strong}%
- \definedummyword{uref}%
- \definedummyword{url}%
- \definedummyword{var}%
- \definedummyword{verb}%
- \definedummyword{w}%
- %
- % Assorted special characters.
- \definedummyword{bullet}%
- \definedummyword{copyright}%
- \definedummyword{registeredsymbol}%
- \definedummyword{dots}%
- \definedummyword{enddots}%
- \definedummyword{equiv}%
- \definedummyword{error}%
- \definedummyword{expansion}%
- \definedummyword{minus}%
- \definedummyword{pounds}%
- \definedummyword{point}%
- \definedummyword{print}%
- \definedummyword{result}%
- %
- % Handle some cases of @value -- where it does not contain any
- % (non-fully-expandable) commands.
- \makevalueexpandable
- %
- % Normal spaces, not active ones.
- \unsepspaces
- %
- % No macro expansion.
- \turnoffmacros
-}
-
-
-% \indexnofonts is used when outputting the strings to sort the index
-% by, and when constructing control sequence names. It eliminates all
-% control sequences and just writes whatever the best ASCII sort string
-% would be for a given command (usually its argument).
-%
-\def\indexdummytex{TeX}
-\def\indexdummydots{...}
-%
-\def\indexnofonts{%
- \def\ { }%
- \def\@{@}%
- % how to handle braces?
- \def\_{\normalunderscore}%
- %
- \let\,=\asis
- \let\"=\asis
- \let\`=\asis
- \let\'=\asis
- \let\^=\asis
- \let\~=\asis
- \let\==\asis
- \let\u=\asis
- \let\v=\asis
- \let\H=\asis
- \let\dotaccent=\asis
- \let\ringaccent=\asis
- \let\tieaccent=\asis
- \let\ubaraccent=\asis
- \let\udotaccent=\asis
- \let\dotless=\asis
- %
- % Other non-English letters.
- \def\AA{AA}%
- \def\AE{AE}%
- \def\L{L}%
- \def\OE{OE}%
- \def\O{O}%
- \def\aa{aa}%
- \def\ae{ae}%
- \def\l{l}%
- \def\oe{oe}%
- \def\o{o}%
- \def\ss{ss}%
- \def\exclamdown{!}%
- \def\questiondown{?}%
- %
- % Don't no-op \tt, since it isn't a user-level command
- % and is used in the definitions of the active chars like <, >, |, etc.
- % Likewise with the other plain tex font commands.
- %\let\tt=\asis
- %
- % Texinfo font commands.
- \let\b=\asis
- \let\i=\asis
- \let\r=\asis
- \let\sc=\asis
- \let\t=\asis
- %
- \let\TeX=\indexdummytex
- \let\acronym=\asis
- \let\cite=\asis
- \let\code=\asis
- \let\command=\asis
- \let\dfn=\asis
- \let\dots=\indexdummydots
- \let\emph=\asis
- \let\env=\asis
- \let\file=\asis
- \let\kbd=\asis
- \let\key=\asis
- \let\math=\asis
- \let\option=\asis
- \let\samp=\asis
- \let\strong=\asis
- \let\uref=\asis
- \let\url=\asis
- \let\var=\asis
- \let\verb=\asis
- \let\w=\asis
-}
-
-\let\indexbackslash=0 %overridden during \printindex.
-\let\SETmarginindex=\relax % put index entries in margin (undocumented)?
-
-% Most index entries go through here, but \dosubind is the general case.
-% #1 is the index name, #2 is the entry text.
-\def\doind#1#2{\dosubind{#1}{#2}{}}
-
-% Workhorse for all \fooindexes.
-% #1 is name of index, #2 is stuff to put there, #3 is subentry --
-% empty if called from \doind, as we usually are (the main exception
-% is with most defuns, which call us directly).
-%
-\def\dosubind#1#2#3{%
- \iflinks
- {%
- % Store the main index entry text (including the third arg).
- \toks0 = {#2}%
- % If third arg is present, precede it with a space.
- \def\thirdarg{#3}%
- \ifx\thirdarg\empty \else
- \toks0 = \expandafter{\the\toks0 \space #3}%
- \fi
- %
- \edef\writeto{\csname#1indfile\endcsname}%
- %
- \ifvmode
- \dosubindsanitize
- \else
- \dosubindwrite
- \fi
- }%
- \fi
-}
-
-% Write the entry in \toks0 to the index file:
-%
-\def\dosubindwrite{%
- % Put the index entry in the margin if desired.
- \ifx\SETmarginindex\relax\else
- \insert\margin{\hbox{\vrule height8pt depth3pt width0pt \the\toks0}}%
- \fi
- %
- % Remember, we are within a group.
- \indexdummies % Must do this here, since \bf, etc expand at this stage
- \escapechar=`\\
- \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
- % so it will be output as is; and it will print as backslash.
- %
- % Process the index entry with all font commands turned off, to
- % get the string to sort by.
- {\indexnofonts
- \edef\temp{\the\toks0}% need full expansion
- \xdef\indexsorttmp{\temp}%
- }%
- %
- % Set up the complete index entry, with both the sort key and
- % the original text, including any font commands. We write
- % three arguments to \entry to the .?? file (four in the
- % subentry case), texindex reduces to two when writing the .??s
- % sorted result.
- \edef\temp{%
- \write\writeto{%
- \string\entry{\indexsorttmp}{\noexpand\folio}{\the\toks0}}%
- }%
- \temp
-}
-
-% Take care of unwanted page breaks:
-%
-% If a skip is the last thing on the list now, preserve it
-% by backing up by \lastskip, doing the \write, then inserting
-% the skip again. Otherwise, the whatsit generated by the
-% \write will make \lastskip zero. The result is that sequences
-% like this:
-% @end defun
-% @tindex whatever
-% @defun ...
-% will have extra space inserted, because the \medbreak in the
-% start of the @defun won't see the skip inserted by the @end of
-% the previous defun.
-%
-% But don't do any of this if we're not in vertical mode. We
-% don't want to do a \vskip and prematurely end a paragraph.
-%
-% Avoid page breaks due to these extra skips, too.
-%
-% But wait, there is a catch there:
-% We'll have to check whether \lastskip is zero skip. \ifdim is not
-% sufficient for this purpose, as it ignores stretch and shrink parts
-% of the skip. The only way seems to be to check the textual
-% representation of the skip.
-%
-% The following is almost like \def\zeroskipmacro{0.0pt} except that
-% the ``p'' and ``t'' characters have catcode \other, not 11 (letter).
-%
-\edef\zeroskipmacro{\expandafter\the\csname z@skip\endcsname}
-%
-% ..., ready, GO:
-%
-\def\dosubindsanitize{%
- % \lastskip and \lastpenalty cannot both be nonzero simultaneously.
- \skip0 = \lastskip
- \edef\lastskipmacro{\the\lastskip}%
- \count255 = \lastpenalty
- %
- % If \lastskip is nonzero, that means the last item was a
- % skip. And since a skip is discardable, that means this
- % -\skip0 glue we're inserting is preceded by a
- % non-discardable item, therefore it is not a potential
- % breakpoint, therefore no \nobreak needed.
- \ifx\lastskipmacro\zeroskipmacro
- \else
- \vskip-\skip0
- \fi
- %
- \dosubindwrite
- %
- \ifx\lastskipmacro\zeroskipmacro
- % if \lastskip was zero, perhaps the last item was a
- % penalty, and perhaps it was >=10000, e.g., a \nobreak.
- % In that case, we want to re-insert the penalty; since we
- % just inserted a non-discardable item, any following glue
- % (such as a \parskip) would be a breakpoint. For example:
- % @deffn deffn-whatever
- % @vindex index-whatever
- % Description.
- % would allow a break between the index-whatever whatsit
- % and the "Description." paragraph.
- \ifnum\count255>9999 \nobreak \fi
- \else
- % On the other hand, if we had a nonzero \lastskip,
- % this make-up glue would be preceded by a non-discardable item
- % (the whatsit from the \write), so we must insert a \nobreak.
- \nobreak\vskip\skip0
- \fi
-}
-
-% The index entry written in the file actually looks like
-% \entry {sortstring}{page}{topic}
-% or
-% \entry {sortstring}{page}{topic}{subtopic}
-% The texindex program reads in these files and writes files
-% containing these kinds of lines:
-% \initial {c}
-% before the first topic whose initial is c
-% \entry {topic}{pagelist}
-% for a topic that is used without subtopics
-% \primary {topic}
-% for the beginning of a topic that is used with subtopics
-% \secondary {subtopic}{pagelist}
-% for each subtopic.
-
-% Define the user-accessible indexing commands
-% @findex, @vindex, @kindex, @cindex.
-
-\def\findex {\fnindex}
-\def\kindex {\kyindex}
-\def\cindex {\cpindex}
-\def\vindex {\vrindex}
-\def\tindex {\tpindex}
-\def\pindex {\pgindex}
-
-\def\cindexsub {\begingroup\obeylines\cindexsub}
-{\obeylines %
-\gdef\cindexsub "#1" #2^^M{\endgroup %
-\dosubind{cp}{#2}{#1}}}
-
-% Define the macros used in formatting output of the sorted index material.
-% @printindex causes a particular index (the ??s file) to get printed.
-% It does not print any chapter heading (usually an @unnumbered).
-%
-\defparsearg\printindex{\begingroup
- \dobreak \chapheadingskip{10000}%
- %
- \smallfonts \rm
- \tolerance = 9500
- \everypar = {}% don't want the \kern\-parindent from indentation suppression.
- %
- % See if the index file exists and is nonempty.
- % Change catcode of @ here so that if the index file contains
- % \initial {@}
- % as its first line, TeX doesn't complain about mismatched braces
- % (because it thinks @} is a control sequence).
- \catcode`\@ = 11
- \openin 1 \jobname.#1s
- \ifeof 1
- % \enddoublecolumns gets confused if there is no text in the index,
- % and it loses the chapter title and the aux file entries for the
- % index. The easiest way to prevent this problem is to make sure
- % there is some text.
- \putwordIndexNonexistent
- \else
- %
- % If the index file exists but is empty, then \openin leaves \ifeof
- % false. We have to make TeX try to read something from the file, so
- % it can discover if there is anything in it.
- \read 1 to \temp
- \ifeof 1
- \putwordIndexIsEmpty
- \else
- % Index files are almost Texinfo source, but we use \ as the escape
- % character. It would be better to use @, but that's too big a change
- % to make right now.
- \def\indexbackslash{\rawbackslashxx}%
- \catcode`\\ = 0
- \escapechar = `\\
- \begindoublecolumns
- \input \jobname.#1s
- \enddoublecolumns
- \fi
- \fi
- \closein 1
-\endgroup}
-
-% These macros are used by the sorted index file itself.
-% Change them to control the appearance of the index.
-
-\def\initial#1{{%
- % Some minor font changes for the special characters.
- \let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
- %
- % Remove any glue we may have, we'll be inserting our own.
- \removelastskip
- %
- % We like breaks before the index initials, so insert a bonus.
- \penalty -300
- %
- % Typeset the initial. Making this add up to a whole number of
- % baselineskips increases the chance of the dots lining up from column
- % to column. It still won't often be perfect, because of the stretch
- % we need before each entry, but it's better.
- %
- % No shrink because it confuses \balancecolumns.
- \vskip 1.67\baselineskip plus .5\baselineskip
- \leftline{\secbf #1}%
- \vskip .33\baselineskip plus .1\baselineskip
- %
- % Do our best not to break after the initial.
- \nobreak
-}}
-
-% \entry typesets a paragraph consisting of the text (#1), dot leaders, and
-% then page number (#2) flushed to the right margin. It is used for index
-% and table of contents entries. The paragraph is indented by \leftskip.
-%
-% A straigtforward implementation would start like this:
-% \def\entry#1#2{...
-% But this frozes the catcodes in the argument, and can cause problems to
-% @code, which set's active ``-''. This problem was fixed by a kludge---
-% ``-'' was active throughout whole index, but this isn't what we really
-% want.
-% The right solution is to prevent \entry from swallowing the whole text.
-% --kasal, 21nov03
-\def\entry{%
- \begingroup
- %
- % Start a new paragraph if necessary, so our assignments below can't
- % affect previous text.
- \par
- %
- % Do not fill out the last line with white space.
- \parfillskip = 0in
- %
- % No extra space above this paragraph.
- \parskip = 0in
- %
- % Do not prefer a separate line ending with a hyphen to fewer lines.
- \finalhyphendemerits = 0
- %
- % \hangindent is only relevant when the entry text and page number
- % don't both fit on one line. In that case, bob suggests starting the
- % dots pretty far over on the line. Unfortunately, a large
- % indentation looks wrong when the entry text itself is broken across
- % lines. So we use a small indentation and put up with long leaders.
- %
- % \hangafter is reset to 1 (which is the value we want) at the start
- % of each paragraph, so we need not do anything with that.
- \hangindent = 2em
- %
- % When the entry text needs to be broken, just fill out the first line
- % with blank space.
- \rightskip = 0pt plus1fil
- %
- % A bit of stretch before each entry for the benefit of balancing
- % columns.
- \vskip 0pt plus1pt
- %
- % Swallow the left brace of the text (first parameter):
- \afterassignment\doentry
- \let\temp =
-}
-\def\doentry{%
- \bgroup % Instead of the swallowed brace.
- \noindent
- \aftergroup\finishentry
- % And now comes the text of the entry.
-}
-\def\finishentry#1{%
- % #1 is the page number.
- %
- % The following is kludged to not output a line of dots in the index if
- % there are no page numbers. The next person who breaks this will be
- % cursed by a Unix daemon.
- \def\tempa{{\rm }}%
- \def\tempb{#1}%
- \edef\tempc{\tempa}%
- \edef\tempd{\tempb}%
- \ifx\tempc\tempd
- \ %
- \else
- %
- % If we must, put the page number on a line of its own, and fill out
- % this line with blank space. (The \hfil is overwhelmed with the
- % fill leaders glue in \indexdotfill if the page number does fit.)
- \hfil\penalty50
- \null\nobreak\indexdotfill % Have leaders before the page number.
- %
- % The `\ ' here is removed by the implicit \unskip that TeX does as
- % part of (the primitive) \par. Without it, a spurious underfull
- % \hbox ensues.
- \ifpdf
- \pdfgettoks#1.\ \the\toksA
- \else
- \ #1%
- \fi
- \fi
- \par
- \endgroup
-}
-
-% Like \dotfill except takes at least 1 em.
-\def\indexdotfill{\cleaders
- \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
-
-\def\primary #1{\line{#1\hfil}}
-
-\newskip\secondaryindent \secondaryindent=0.5cm
-\def\secondary#1#2{{%
- \parfillskip=0in
- \parskip=0in
- \hangindent=1in
- \hangafter=1
- \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill
- \ifpdf
- \pdfgettoks#2.\ \the\toksA % The page number ends the paragraph.
- \else
- #2
- \fi
- \par
-}}
-
-% Define two-column mode, which we use to typeset indexes.
-% Adapted from the TeXbook, page 416, which is to say,
-% the manmac.tex format used to print the TeXbook itself.
-\catcode`\@=11
-
-\newbox\partialpage
-\newdimen\doublecolumnhsize
-
-\def\begindoublecolumns{\begingroup % ended by \enddoublecolumns
- % Grab any single-column material above us.
- \output = {%
- %
- % Here is a possibility not foreseen in manmac: if we accumulate a
- % whole lot of material, we might end up calling this \output
- % routine twice in a row (see the doublecol-lose test, which is
- % essentially a couple of indexes with @setchapternewpage off). In
- % that case we just ship out what is in \partialpage with the normal
- % output routine. Generally, \partialpage will be empty when this
- % runs and this will be a no-op. See the indexspread.tex test case.
- \ifvoid\partialpage \else
- \onepageout{\pagecontents\partialpage}%
- \fi
- %
- \global\setbox\partialpage = \vbox{%
- % Unvbox the main output page.
- \unvbox\PAGE
- \kern-\topskip \kern\baselineskip
- }%
- }%
- \eject % run that output routine to set \partialpage
- %
- % Use the double-column output routine for subsequent pages.
- \output = {\doublecolumnout}%
- %
- % Change the page size parameters. We could do this once outside this
- % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
- % format, but then we repeat the same computation. Repeating a couple
- % of assignments once per index is clearly meaningless for the
- % execution time, so we may as well do it in one place.
%
% First we halve the line length, less a little for the gutter between
% the columns. We compute the gutter based on the line length, so it
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