Annotation of OpenXM/src/kan96xx/gmp-2.0.2/texinfo.tex, Revision 1.1.1.1
1.1 maekawa 1: %% TeX macros to handle texinfo files
2:
3: % Copyright (C) 1985, 86, 88, 90, 91, 92, 93,
4: % 94, 95, 1996 Free Software Foundation, Inc.
5:
6: %This texinfo.tex file is free software; you can redistribute it and/or
7: %modify it under the terms of the GNU General Public License as
8: %published by the Free Software Foundation; either version 2, or (at
9: %your option) any later version.
10:
11: %This texinfo.tex file is distributed in the hope that it will be
12: %useful, but WITHOUT ANY WARRANTY; without even the implied warranty
13: %of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: %General Public License for more details.
15:
16: %You should have received a copy of the GNU General Public License
17: %along with this texinfo.tex file; see the file COPYING. If not, write
18: %to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
19: %Boston, MA 02111-1307, USA.
20:
21:
22: %In other words, you are welcome to use, share and improve this program.
23: %You are forbidden to forbid anyone else to use, share and improve
24: %what you give them. Help stamp out software-hoarding!
25:
26:
27: % Send bug reports to bug-texinfo@prep.ai.mit.edu.
28: % Please include a *precise* test case in each bug report.
29:
30:
31: % Make it possible to create a .fmt file just by loading this file:
32: % if the underlying format is not loaded, start by loading it now.
33: % Added by gildea November 1993.
34: \expandafter\ifx\csname fmtname\endcsname\relax\input plain\fi
35:
36: % This automatically updates the version number based on RCS.
37: \def\deftexinfoversion$#1: #2 ${\def\texinfoversion{#2}}
38: \deftexinfoversion$Revision: 2.172 $
39: \message{Loading texinfo package [Version \texinfoversion]:}
40:
41: % If in a .fmt file, print the version number
42: % and turn on active characters that we couldn't do earlier because
43: % they might have appeared in the input file name.
44: \everyjob{\message{[Texinfo version \texinfoversion]}\message{}
45: \catcode`+=\active \catcode`\_=\active}
46:
47: % Save some parts of plain tex whose names we will redefine.
48:
49: \let\ptextilde=\~
50: \let\ptexlbrace=\{
51: \let\ptexrbrace=\}
52: \let\ptexdots=\dots
53: \let\ptexdot=\.
54: \let\ptexstar=\*
55: \let\ptexend=\end
56: \let\ptexbullet=\bullet
57: \let\ptexb=\b
58: \let\ptexc=\c
59: \let\ptexi=\i
60: \let\ptext=\t
61: \let\ptexl=\l
62: \let\ptexL=\L
63:
64: % Be sure we're in horizontal mode when doing a tie, since we make space
65: % equivalent to this in @example-like environments. Otherwise, a space
66: % at the beginning of a line will start with \penalty -- and
67: % since \penalty is valid in vertical mode, we'd end up putting the
68: % penalty on the vertical list instead of in the new paragraph.
69: {\catcode`@ = 11
70: % Avoid using \@M directly, because that causes trouble
71: % if the definition is written into an index file.
72: \global\let\tiepenalty = \@M
73: \gdef\tie{\leavevmode\penalty\tiepenalty\ }
74: }
75: \let\~ = \tie % And make it available as @~.
76:
77: \message{Basics,}
78: \chardef\other=12
79:
80: % If this character appears in an error message or help string, it
81: % starts a new line in the output.
82: \newlinechar = `^^J
83:
84: % Set up fixed words for English.
85: \ifx\putwordChapter\undefined{\gdef\putwordChapter{Chapter}}\fi%
86: \def\putwordInfo{Info}%
87: \ifx\putwordSee\undefined{\gdef\putwordSee{See}}\fi%
88: \ifx\putwordsee\undefined{\gdef\putwordsee{see}}\fi%
89: \ifx\putwordfile\undefined{\gdef\putwordfile{file}}\fi%
90: \ifx\putwordpage\undefined{\gdef\putwordpage{page}}\fi%
91: \ifx\putwordsection\undefined{\gdef\putwordsection{section}}\fi%
92: \ifx\putwordSection\undefined{\gdef\putwordSection{Section}}\fi%
93: \ifx\putwordTableofContents\undefined{\gdef\putwordTableofContents{Table of Contents}}\fi%
94: \ifx\putwordShortContents\undefined{\gdef\putwordShortContents{Short Contents}}\fi%
95: \ifx\putwordAppendix\undefined{\gdef\putwordAppendix{Appendix}}\fi%
96:
97: % Ignore a token.
98: %
99: \def\gobble#1{}
100:
101: \hyphenation{ap-pen-dix}
102: \hyphenation{mini-buf-fer mini-buf-fers}
103: \hyphenation{eshell}
104:
105: % Margin to add to right of even pages, to left of odd pages.
106: \newdimen \bindingoffset \bindingoffset=0pt
107: \newdimen \normaloffset \normaloffset=\hoffset
108: \newdimen\pagewidth \newdimen\pageheight
109: \pagewidth=\hsize \pageheight=\vsize
110:
111: % Sometimes it is convenient to have everything in the transcript file
112: % and nothing on the terminal. We don't just call \tracingall here,
113: % since that produces some useless output on the terminal.
114: %
115: \def\gloggingall{\begingroup \globaldefs = 1 \loggingall \endgroup}%
116: \def\loggingall{\tracingcommands2 \tracingstats2
117: \tracingpages1 \tracingoutput1 \tracinglostchars1
118: \tracingmacros2 \tracingparagraphs1 \tracingrestores1
119: \showboxbreadth\maxdimen\showboxdepth\maxdimen
120: }%
121:
122: %---------------------Begin change-----------------------
123: %
124: %%%% For @cropmarks command.
125: % Dimensions to add cropmarks at corners Added by P. A. MacKay, 12 Nov. 1986
126: %
127: \newdimen\cornerlong \newdimen\cornerthick
128: \newdimen \topandbottommargin
129: \newdimen \outerhsize \newdimen \outervsize
130: \cornerlong=1pc\cornerthick=.3pt % These set size of cropmarks
131: \outerhsize=7in
132: %\outervsize=9.5in
133: % Alternative @smallbook page size is 9.25in
134: \outervsize=9.25in
135: \topandbottommargin=.75in
136: %
137: %---------------------End change-----------------------
138:
139: % \onepageout takes a vbox as an argument. Note that \pagecontents
140: % does insertions itself, but you have to call it yourself.
141: \chardef\PAGE=255 \output={\onepageout{\pagecontents\PAGE}}
142: \def\onepageout#1{\hoffset=\normaloffset
143: \ifodd\pageno \advance\hoffset by \bindingoffset
144: \else \advance\hoffset by -\bindingoffset\fi
145: {\escapechar=`\\\relax % makes sure backslash is used in output files.
146: \shipout\vbox{{\let\hsize=\pagewidth \makeheadline} \pagebody{#1}%
147: {\let\hsize=\pagewidth \makefootline}}}%
148: \advancepageno \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
149:
150: %%%% For @cropmarks command %%%%
151:
152: % Here is a modification of the main output routine for Near East Publications
153: % This provides right-angle cropmarks at all four corners.
154: % The contents of the page are centerlined into the cropmarks,
155: % and any desired binding offset is added as an \hskip on either
156: % site of the centerlined box. (P. A. MacKay, 12 November, 1986)
157: %
158: \def\croppageout#1{\hoffset=0pt % make sure this doesn't mess things up
159: {\escapechar=`\\\relax % makes sure backslash is used in output files.
160: \shipout
161: \vbox to \outervsize{\hsize=\outerhsize
162: \vbox{\line{\ewtop\hfill\ewtop}}
163: \nointerlineskip
164: \line{\vbox{\moveleft\cornerthick\nstop}
165: \hfill
166: \vbox{\moveright\cornerthick\nstop}}
167: \vskip \topandbottommargin
168: \centerline{\ifodd\pageno\hskip\bindingoffset\fi
169: \vbox{
170: {\let\hsize=\pagewidth \makeheadline}
171: \pagebody{#1}
172: {\let\hsize=\pagewidth \makefootline}}
173: \ifodd\pageno\else\hskip\bindingoffset\fi}
174: \vskip \topandbottommargin plus1fill minus1fill
175: \boxmaxdepth\cornerthick
176: \line{\vbox{\moveleft\cornerthick\nsbot}
177: \hfill
178: \vbox{\moveright\cornerthick\nsbot}}
179: \nointerlineskip
180: \vbox{\line{\ewbot\hfill\ewbot}}
181: }}
182: \advancepageno
183: \ifnum\outputpenalty>-20000 \else\dosupereject\fi}
184: %
185: % Do @cropmarks to get crop marks
186: \def\cropmarks{\let\onepageout=\croppageout }
187:
188: \newinsert\margin \dimen\margin=\maxdimen
189:
190: \def\pagebody#1{\vbox to\pageheight{\boxmaxdepth=\maxdepth #1}}
191: {\catcode`\@ =11
192: \gdef\pagecontents#1{\ifvoid\topins\else\unvbox\topins\fi
193: % marginal hacks, juha@viisa.uucp (Juha Takala)
194: \ifvoid\margin\else % marginal info is present
195: \rlap{\kern\hsize\vbox to\z@{\kern1pt\box\margin \vss}}\fi
196: \dimen@=\dp#1 \unvbox#1
197: \ifvoid\footins\else\vskip\skip\footins\footnoterule \unvbox\footins\fi
198: \ifr@ggedbottom \kern-\dimen@ \vfil \fi}
199: }
200:
201: %
202: % Here are the rules for the cropmarks. Note that they are
203: % offset so that the space between them is truly \outerhsize or \outervsize
204: % (P. A. MacKay, 12 November, 1986)
205: %
206: \def\ewtop{\vrule height\cornerthick depth0pt width\cornerlong}
207: \def\nstop{\vbox
208: {\hrule height\cornerthick depth\cornerlong width\cornerthick}}
209: \def\ewbot{\vrule height0pt depth\cornerthick width\cornerlong}
210: \def\nsbot{\vbox
211: {\hrule height\cornerlong depth\cornerthick width\cornerthick}}
212:
213: % Parse an argument, then pass it to #1. The argument is the rest of
214: % the input line (except we remove a trailing comment). #1 should be a
215: % macro which expects an ordinary undelimited TeX argument.
216: %
217: \def\parsearg#1{%
218: \let\next = #1%
219: \begingroup
220: \obeylines
221: \futurelet\temp\parseargx
222: }
223:
224: % If the next token is an obeyed space (from an @example environment or
225: % the like), remove it and recurse. Otherwise, we're done.
226: \def\parseargx{%
227: % \obeyedspace is defined far below, after the definition of \sepspaces.
228: \ifx\obeyedspace\temp
229: \expandafter\parseargdiscardspace
230: \else
231: \expandafter\parseargline
232: \fi
233: }
234:
235: % Remove a single space (as the delimiter token to the macro call).
236: {\obeyspaces %
237: \gdef\parseargdiscardspace {\futurelet\temp\parseargx}}
238:
239: {\obeylines %
240: \gdef\parseargline#1^^M{%
241: \endgroup % End of the group started in \parsearg.
242: %
243: % First remove any @c comment, then any @comment.
244: % Result of each macro is put in \toks0.
245: \argremovec #1\c\relax %
246: \expandafter\argremovecomment \the\toks0 \comment\relax %
247: %
248: % Call the caller's macro, saved as \next in \parsearg.
249: \expandafter\next\expandafter{\the\toks0}%
250: }%
251: }
252:
253: % Since all \c{,omment} does is throw away the argument, we can let TeX
254: % do that for us. The \relax here is matched by the \relax in the call
255: % in \parseargline; it could be more or less anything, its purpose is
256: % just to delimit the argument to the \c.
257: \def\argremovec#1\c#2\relax{\toks0 = {#1}}
258: \def\argremovecomment#1\comment#2\relax{\toks0 = {#1}}
259:
260: % \argremovec{,omment} might leave us with trailing spaces, though; e.g.,
261: % @end itemize @c foo
262: % will have two active spaces as part of the argument with the
263: % `itemize'. Here we remove all active spaces from #1, and assign the
264: % result to \toks0.
265: %
266: % This loses if there are any *other* active characters besides spaces
267: % in the argument -- _ ^ +, for example -- since they get expanded.
268: % Fortunately, Texinfo does not define any such commands. (If it ever
269: % does, the catcode of the characters in questionwill have to be changed
270: % here.) But this means we cannot call \removeactivespaces as part of
271: % \argremovec{,omment}, since @c uses \parsearg, and thus the argument
272: % that \parsearg gets might well have any character at all in it.
273: %
274: \def\removeactivespaces#1{%
275: \begingroup
276: \ignoreactivespaces
277: \edef\temp{#1}%
278: \global\toks0 = \expandafter{\temp}%
279: \endgroup
280: }
281:
282: % Change the active space to expand to nothing.
283: %
284: \begingroup
285: \obeyspaces
286: \gdef\ignoreactivespaces{\obeyspaces\let =\empty}
287: \endgroup
288:
289:
290: \def\flushcr{\ifx\par\lisppar \def\next##1{}\else \let\next=\relax \fi \next}
291:
292: %% These are used to keep @begin/@end levels from running away
293: %% Call \inENV within environments (after a \begingroup)
294: \newif\ifENV \ENVfalse \def\inENV{\ifENV\relax\else\ENVtrue\fi}
295: \def\ENVcheck{%
296: \ifENV\errmessage{Still within an environment. Type Return to continue.}
297: \endgroup\fi} % This is not perfect, but it should reduce lossage
298:
299: % @begin foo is the same as @foo, for now.
300: \newhelp\EMsimple{Type <Return> to continue.}
301:
302: \outer\def\begin{\parsearg\beginxxx}
303:
304: \def\beginxxx #1{%
305: \expandafter\ifx\csname #1\endcsname\relax
306: {\errhelp=\EMsimple \errmessage{Undefined command @begin #1}}\else
307: \csname #1\endcsname\fi}
308:
309: % @end foo executes the definition of \Efoo.
310: %
311: \def\end{\parsearg\endxxx}
312: \def\endxxx #1{%
313: \removeactivespaces{#1}%
314: \edef\endthing{\the\toks0}%
315: %
316: \expandafter\ifx\csname E\endthing\endcsname\relax
317: \expandafter\ifx\csname \endthing\endcsname\relax
318: % There's no \foo, i.e., no ``environment'' foo.
319: \errhelp = \EMsimple
320: \errmessage{Undefined command `@end \endthing'}%
321: \else
322: \unmatchedenderror\endthing
323: \fi
324: \else
325: % Everything's ok; the right environment has been started.
326: \csname E\endthing\endcsname
327: \fi
328: }
329:
330: % There is an environment #1, but it hasn't been started. Give an error.
331: %
332: \def\unmatchedenderror#1{%
333: \errhelp = \EMsimple
334: \errmessage{This `@end #1' doesn't have a matching `@#1'}%
335: }
336:
337: % Define the control sequence \E#1 to give an unmatched @end error.
338: %
339: \def\defineunmatchedend#1{%
340: \expandafter\def\csname E#1\endcsname{\unmatchedenderror{#1}}%
341: }
342:
343:
344: % Single-spacing is done by various environments (specifically, in
345: % \nonfillstart and \quotations).
346: \newskip\singlespaceskip \singlespaceskip = 12.5pt
347: \def\singlespace{%
348: % Why was this kern here? It messes up equalizing space above and below
349: % environments. --karl, 6may93
350: %{\advance \baselineskip by -\singlespaceskip
351: %\kern \baselineskip}%
352: \setleading \singlespaceskip
353: }
354:
355: %% Simple single-character @ commands
356:
357: % @@ prints an @
358: % Kludge this until the fonts are right (grr).
359: \def\@{{\tt \char '100}}
360:
361: % This is turned off because it was never documented
362: % and you can use @w{...} around a quote to suppress ligatures.
363: %% Define @` and @' to be the same as ` and '
364: %% but suppressing ligatures.
365: %\def\`{{`}}
366: %\def\'{{'}}
367:
368: % Used to generate quoted braces.
369:
370: \def\mylbrace {{\tt \char '173}}
371: \def\myrbrace {{\tt \char '175}}
372: \let\{=\mylbrace
373: \let\}=\myrbrace
374:
375: % @: forces normal size whitespace following.
376: \def\:{\spacefactor=1000 }
377:
378: % @* forces a line break.
379: \def\*{\hfil\break\hbox{}\ignorespaces}
380:
381: % @. is an end-of-sentence period.
382: \def\.{.\spacefactor=3000 }
383:
384: % @enddots{} is an end-of-sentence ellipsis.
385: \gdef\enddots{$\mathinner{\ldotp\ldotp\ldotp\ldotp}$\spacefactor=3000}
386:
387: % @! is an end-of-sentence bang.
388: \gdef\!{!\spacefactor=3000 }
389:
390: % @? is an end-of-sentence query.
391: \gdef\?{?\spacefactor=3000 }
392:
393: % @w prevents a word break. Without the \leavevmode, @w at the
394: % beginning of a paragraph, when TeX is still in vertical mode, would
395: % produce a whole line of output instead of starting the paragraph.
396: \def\w#1{\leavevmode\hbox{#1}}
397:
398: % @group ... @end group forces ... to be all on one page, by enclosing
399: % it in a TeX vbox. We use \vtop instead of \vbox to construct the box
400: % to keep its height that of a normal line. According to the rules for
401: % \topskip (p.114 of the TeXbook), the glue inserted is
402: % max (\topskip - \ht (first item), 0). If that height is large,
403: % therefore, no glue is inserted, and the space between the headline and
404: % the text is small, which looks bad.
405: %
406: \def\group{\begingroup
407: \ifnum\catcode13=\active \else
408: \errhelp = \groupinvalidhelp
409: \errmessage{@group invalid in context where filling is enabled}%
410: \fi
411: %
412: % The \vtop we start below produces a box with normal height and large
413: % depth; thus, TeX puts \baselineskip glue before it, and (when the
414: % next line of text is done) \lineskip glue after it. (See p.82 of
415: % the TeXbook.) Thus, space below is not quite equal to space
416: % above. But it's pretty close.
417: \def\Egroup{%
418: \egroup % End the \vtop.
419: \endgroup % End the \group.
420: }%
421: %
422: \vtop\bgroup
423: % We have to put a strut on the last line in case the @group is in
424: % the midst of an example, rather than completely enclosing it.
425: % Otherwise, the interline space between the last line of the group
426: % and the first line afterwards is too small. But we can't put the
427: % strut in \Egroup, since there it would be on a line by itself.
428: % Hence this just inserts a strut at the beginning of each line.
429: \everypar = {\strut}%
430: %
431: % Since we have a strut on every line, we don't need any of TeX's
432: % normal interline spacing.
433: \offinterlineskip
434: %
435: % OK, but now we have to do something about blank
436: % lines in the input in @example-like environments, which normally
437: % just turn into \lisppar, which will insert no space now that we've
438: % turned off the interline space. Simplest is to make them be an
439: % empty paragraph.
440: \ifx\par\lisppar
441: \edef\par{\leavevmode \par}%
442: %
443: % Reset ^^M's definition to new definition of \par.
444: \obeylines
445: \fi
446: %
447: % Do @comment since we are called inside an environment such as
448: % @example, where each end-of-line in the input causes an
449: % end-of-line in the output. We don't want the end-of-line after
450: % the `@group' to put extra space in the output. Since @group
451: % should appear on a line by itself (according to the Texinfo
452: % manual), we don't worry about eating any user text.
453: \comment
454: }
455: %
456: % TeX puts in an \escapechar (i.e., `@') at the beginning of the help
457: % message, so this ends up printing `@group can only ...'.
458: %
459: \newhelp\groupinvalidhelp{%
460: group can only be used in environments such as @example,^^J%
461: where each line of input produces a line of output.}
462:
463: % @need space-in-mils
464: % forces a page break if there is not space-in-mils remaining.
465:
466: \newdimen\mil \mil=0.001in
467:
468: \def\need{\parsearg\needx}
469:
470: % Old definition--didn't work.
471: %\def\needx #1{\par %
472: %% This method tries to make TeX break the page naturally
473: %% if the depth of the box does not fit.
474: %{\baselineskip=0pt%
475: %\vtop to #1\mil{\vfil}\kern -#1\mil\penalty 10000
476: %\prevdepth=-1000pt
477: %}}
478:
479: \def\needx#1{%
480: % Go into vertical mode, so we don't make a big box in the middle of a
481: % paragraph.
482: \par
483: %
484: % Don't add any leading before our big empty box, but allow a page
485: % break, since the best break might be right here.
486: \allowbreak
487: \nointerlineskip
488: \vtop to #1\mil{\vfil}%
489: %
490: % TeX does not even consider page breaks if a penalty added to the
491: % main vertical list is 10000 or more. But in order to see if the
492: % empty box we just added fits on the page, we must make it consider
493: % page breaks. On the other hand, we don't want to actually break the
494: % page after the empty box. So we use a penalty of 9999.
495: %
496: % There is an extremely small chance that TeX will actually break the
497: % page at this \penalty, if there are no other feasible breakpoints in
498: % sight. (If the user is using lots of big @group commands, which
499: % almost-but-not-quite fill up a page, TeX will have a hard time doing
500: % good page breaking, for example.) However, I could not construct an
501: % example where a page broke at this \penalty; if it happens in a real
502: % document, then we can reconsider our strategy.
503: \penalty9999
504: %
505: % Back up by the size of the box, whether we did a page break or not.
506: \kern -#1\mil
507: %
508: % Do not allow a page break right after this kern.
509: \nobreak
510: }
511:
512: % @br forces paragraph break
513:
514: \let\br = \par
515:
516: % @dots{} output some dots
517:
518: \def\dots{$\ldots$}
519:
520: % @page forces the start of a new page
521:
522: \def\page{\par\vfill\supereject}
523:
524: % @exdent text....
525: % outputs text on separate line in roman font, starting at standard page margin
526:
527: % This records the amount of indent in the innermost environment.
528: % That's how much \exdent should take out.
529: \newskip\exdentamount
530:
531: % This defn is used inside fill environments such as @defun.
532: \def\exdent{\parsearg\exdentyyy}
533: \def\exdentyyy #1{{\hfil\break\hbox{\kern -\exdentamount{\rm#1}}\hfil\break}}
534:
535: % This defn is used inside nofill environments such as @example.
536: \def\nofillexdent{\parsearg\nofillexdentyyy}
537: \def\nofillexdentyyy #1{{\advance \leftskip by -\exdentamount
538: \leftline{\hskip\leftskip{\rm#1}}}}
539:
540: % @inmargin{TEXT} puts TEXT in the margin next to the current paragraph.
541:
542: \def\inmargin#1{%
543: \strut\vadjust{\nobreak\kern-\strutdepth
544: \vtop to \strutdepth{\baselineskip\strutdepth\vss
545: \llap{\rightskip=\inmarginspacing \vbox{\noindent #1}}\null}}}
546: \newskip\inmarginspacing \inmarginspacing=1cm
547: \def\strutdepth{\dp\strutbox}
548:
549: %\hbox{{\rm#1}}\hfil\break}}
550:
551: % @include file insert text of that file as input.
552: % Allow normal characters that we make active in the argument (a file name).
553: \def\include{\begingroup
554: \catcode`\\=12
555: \catcode`~=12
556: \catcode`^=12
557: \catcode`_=12
558: \catcode`|=12
559: \catcode`<=12
560: \catcode`>=12
561: \catcode`+=12
562: \parsearg\includezzz}
563: % Restore active chars for included file.
564: \def\includezzz#1{\endgroup\begingroup
565: % Read the included file in a group so nested @include's work.
566: \def\thisfile{#1}%
567: \input\thisfile
568: \endgroup}
569:
570: \def\thisfile{}
571:
572: % @center line outputs that line, centered
573:
574: \def\center{\parsearg\centerzzz}
575: \def\centerzzz #1{{\advance\hsize by -\leftskip
576: \advance\hsize by -\rightskip
577: \centerline{#1}}}
578:
579: % @sp n outputs n lines of vertical space
580:
581: \def\sp{\parsearg\spxxx}
582: \def\spxxx #1{\par \vskip #1\baselineskip}
583:
584: % @comment ...line which is ignored...
585: % @c is the same as @comment
586: % @ignore ... @end ignore is another way to write a comment
587:
588: \def\comment{\catcode 64=\other \catcode 123=\other \catcode 125=\other%
589: \parsearg \commentxxx}
590:
591: \def\commentxxx #1{\catcode 64=0 \catcode 123=1 \catcode 125=2 }
592:
593: \let\c=\comment
594:
595: % Prevent errors for section commands.
596: % Used in @ignore and in failing conditionals.
597: \def\ignoresections{%
598: \let\chapter=\relax
599: \let\unnumbered=\relax
600: \let\top=\relax
601: \let\unnumberedsec=\relax
602: \let\unnumberedsection=\relax
603: \let\unnumberedsubsec=\relax
604: \let\unnumberedsubsection=\relax
605: \let\unnumberedsubsubsec=\relax
606: \let\unnumberedsubsubsection=\relax
607: \let\section=\relax
608: \let\subsec=\relax
609: \let\subsubsec=\relax
610: \let\subsection=\relax
611: \let\subsubsection=\relax
612: \let\appendix=\relax
613: \let\appendixsec=\relax
614: \let\appendixsection=\relax
615: \let\appendixsubsec=\relax
616: \let\appendixsubsection=\relax
617: \let\appendixsubsubsec=\relax
618: \let\appendixsubsubsection=\relax
619: \let\contents=\relax
620: \let\smallbook=\relax
621: \let\titlepage=\relax
622: }
623:
624: % Used in nested conditionals, where we have to parse the Texinfo source
625: % and so want to turn off most commands, in case they are used
626: % incorrectly.
627: %
628: \def\ignoremorecommands{%
629: \let\defcv = \relax
630: \let\deffn = \relax
631: \let\deffnx = \relax
632: \let\defindex = \relax
633: \let\defivar = \relax
634: \let\defmac = \relax
635: \let\defmethod = \relax
636: \let\defop = \relax
637: \let\defopt = \relax
638: \let\defspec = \relax
639: \let\deftp = \relax
640: \let\deftypefn = \relax
641: \let\deftypefun = \relax
642: \let\deftypevar = \relax
643: \let\deftypevr = \relax
644: \let\defun = \relax
645: \let\defvar = \relax
646: \let\defvr = \relax
647: \let\ref = \relax
648: \let\xref = \relax
649: \let\printindex = \relax
650: \let\pxref = \relax
651: \let\settitle = \relax
652: \let\setchapternewpage = \relax
653: \let\setchapterstyle = \relax
654: \let\everyheading = \relax
655: \let\evenheading = \relax
656: \let\oddheading = \relax
657: \let\everyfooting = \relax
658: \let\evenfooting = \relax
659: \let\oddfooting = \relax
660: \let\headings = \relax
661: \let\include = \relax
662: \let\lowersections = \relax
663: \let\down = \relax
664: \let\raisesections = \relax
665: \let\up = \relax
666: \let\set = \relax
667: \let\clear = \relax
668: \let\item = \relax
669: \let\message = \relax
670: }
671:
672: % Ignore @ignore ... @end ignore.
673: %
674: \def\ignore{\doignore{ignore}}
675:
676: % Also ignore @ifinfo, @ifhtml, @html, @menu, and @direntry text.
677: %
678: \def\ifinfo{\doignore{ifinfo}}
679: \def\ifhtml{\doignore{ifhtml}}
680: \def\html{\doignore{html}}
681: \def\menu{\doignore{menu}}
682: \def\direntry{\doignore{direntry}}
683:
684: % @dircategory CATEGORY -- specify a category of the dir file
685: % which this file should belong to. Ignore this in TeX.
686:
687: \def\dircategory{\comment}
688:
689: % Ignore text until a line `@end #1'.
690: %
691: \def\doignore#1{\begingroup
692: % Don't complain about control sequences we have declared \outer.
693: \ignoresections
694: %
695: % Define a command to swallow text until we reach `@end #1'.
696: \long\def\doignoretext##1\end #1{\enddoignore}%
697: %
698: % Make sure that spaces turn into tokens that match what \doignoretext wants.
699: \catcode32 = 10
700: %
701: % And now expand that command.
702: \doignoretext
703: }
704:
705: % What we do to finish off ignored text.
706: %
707: \def\enddoignore{\endgroup\ignorespaces}%
708:
709: \newif\ifwarnedobs\warnedobsfalse
710: \def\obstexwarn{%
711: \ifwarnedobs\relax\else
712: % We need to warn folks that they may have trouble with TeX 3.0.
713: % This uses \immediate\write16 rather than \message to get newlines.
714: \immediate\write16{}
715: \immediate\write16{***WARNING*** for users of Unix TeX 3.0!}
716: \immediate\write16{This manual trips a bug in TeX version 3.0 (tex hangs).}
717: \immediate\write16{If you are running another version of TeX, relax.}
718: \immediate\write16{If you are running Unix TeX 3.0, kill this TeX process.}
719: \immediate\write16{ Then upgrade your TeX installation if you can.}
720: \immediate\write16{If you are stuck with version 3.0, run the}
721: \immediate\write16{ script ``tex3patch'' from the Texinfo distribution}
722: \immediate\write16{ to use a workaround.}
723: \immediate\write16{}
724: \global\warnedobstrue
725: \fi
726: }
727:
728: % **In TeX 3.0, setting text in \nullfont hangs tex. For a
729: % workaround (which requires the file ``dummy.tfm'' to be installed),
730: % uncomment the following line:
731: %%%%%\font\nullfont=dummy\let\obstexwarn=\relax
732:
733: % Ignore text, except that we keep track of conditional commands for
734: % purposes of nesting, up to an `@end #1' command.
735: %
736: \def\nestedignore#1{%
737: \obstexwarn
738: % We must actually expand the ignored text to look for the @end
739: % command, so that nested ignore constructs work. Thus, we put the
740: % text into a \vbox and then do nothing with the result. To minimize
741: % the change of memory overflow, we follow the approach outlined on
742: % page 401 of the TeXbook: make the current font be a dummy font.
743: %
744: \setbox0 = \vbox\bgroup
745: % Don't complain about control sequences we have declared \outer.
746: \ignoresections
747: %
748: % Define `@end #1' to end the box, which will in turn undefine the
749: % @end command again.
750: \expandafter\def\csname E#1\endcsname{\egroup\ignorespaces}%
751: %
752: % We are going to be parsing Texinfo commands. Most cause no
753: % trouble when they are used incorrectly, but some commands do
754: % complicated argument parsing or otherwise get confused, so we
755: % undefine them.
756: %
757: % We can't do anything about stray @-signs, unfortunately;
758: % they'll produce `undefined control sequence' errors.
759: \ignoremorecommands
760: %
761: % Set the current font to be \nullfont, a TeX primitive, and define
762: % all the font commands to also use \nullfont. We don't use
763: % dummy.tfm, as suggested in the TeXbook, because not all sites
764: % might have that installed. Therefore, math mode will still
765: % produce output, but that should be an extremely small amount of
766: % stuff compared to the main input.
767: %
768: \nullfont
769: \let\tenrm = \nullfont \let\tenit = \nullfont \let\tensl = \nullfont
770: \let\tenbf = \nullfont \let\tentt = \nullfont \let\smallcaps = \nullfont
771: \let\tensf = \nullfont
772: % Similarly for index fonts (mostly for their use in
773: % smallexample)
774: \let\indrm = \nullfont \let\indit = \nullfont \let\indsl = \nullfont
775: \let\indbf = \nullfont \let\indtt = \nullfont \let\indsc = \nullfont
776: \let\indsf = \nullfont
777: %
778: % Don't complain when characters are missing from the fonts.
779: \tracinglostchars = 0
780: %
781: % Don't bother to do space factor calculations.
782: \frenchspacing
783: %
784: % Don't report underfull hboxes.
785: \hbadness = 10000
786: %
787: % Do minimal line-breaking.
788: \pretolerance = 10000
789: %
790: % Do not execute instructions in @tex
791: \def\tex{\doignore{tex}}
792: }
793:
794: % @set VAR sets the variable VAR to an empty value.
795: % @set VAR REST-OF-LINE sets VAR to the value REST-OF-LINE.
796: %
797: % Since we want to separate VAR from REST-OF-LINE (which might be
798: % empty), we can't just use \parsearg; we have to insert a space of our
799: % own to delimit the rest of the line, and then take it out again if we
800: % didn't need it. Make sure the catcode of space is correct to avoid
801: % losing inside @example, for instance.
802: %
803: \def\set{\begingroup\catcode` =10 \parsearg\setxxx}
804: \def\setxxx#1{\setyyy#1 \endsetyyy}
805: \def\setyyy#1 #2\endsetyyy{%
806: \def\temp{#2}%
807: \ifx\temp\empty \global\expandafter\let\csname SET#1\endcsname = \empty
808: \else \setzzz{#1}#2\endsetzzz % Remove the trailing space \setxxx inserted.
809: \fi
810: \endgroup
811: }
812: % Can't use \xdef to pre-expand #2 and save some time, since \temp or
813: % \next or other control sequences that we've defined might get us into
814: % an infinite loop. Consider `@set foo @cite{bar}'.
815: \def\setzzz#1#2 \endsetzzz{\expandafter\gdef\csname SET#1\endcsname{#2}}
816:
817: % @clear VAR clears (i.e., unsets) the variable VAR.
818: %
819: \def\clear{\parsearg\clearxxx}
820: \def\clearxxx#1{\global\expandafter\let\csname SET#1\endcsname=\relax}
821:
822: % @value{foo} gets the text saved in variable foo.
823: %
824: \def\value#1{\expandafter
825: \ifx\csname SET#1\endcsname\relax
826: {\{No value for ``#1''\}}
827: \else \csname SET#1\endcsname \fi}
828:
829: % @ifset VAR ... @end ifset reads the `...' iff VAR has been defined
830: % with @set.
831: %
832: \def\ifset{\parsearg\ifsetxxx}
833: \def\ifsetxxx #1{%
834: \expandafter\ifx\csname SET#1\endcsname\relax
835: \expandafter\ifsetfail
836: \else
837: \expandafter\ifsetsucceed
838: \fi
839: }
840: \def\ifsetsucceed{\conditionalsucceed{ifset}}
841: \def\ifsetfail{\nestedignore{ifset}}
842: \defineunmatchedend{ifset}
843:
844: % @ifclear VAR ... @end ifclear reads the `...' iff VAR has never been
845: % defined with @set, or has been undefined with @clear.
846: %
847: \def\ifclear{\parsearg\ifclearxxx}
848: \def\ifclearxxx #1{%
849: \expandafter\ifx\csname SET#1\endcsname\relax
850: \expandafter\ifclearsucceed
851: \else
852: \expandafter\ifclearfail
853: \fi
854: }
855: \def\ifclearsucceed{\conditionalsucceed{ifclear}}
856: \def\ifclearfail{\nestedignore{ifclear}}
857: \defineunmatchedend{ifclear}
858:
859: % @iftex always succeeds; we read the text following, through @end
860: % iftex). But `@end iftex' should be valid only after an @iftex.
861: %
862: \def\iftex{\conditionalsucceed{iftex}}
863: \defineunmatchedend{iftex}
864:
865: % We can't just want to start a group at @iftex (for example) and end it
866: % at @end iftex, since then @set commands inside the conditional have no
867: % effect (they'd get reverted at the end of the group). So we must
868: % define \Eiftex to redefine itself to be its previous value. (We can't
869: % just define it to fail again with an ``unmatched end'' error, since
870: % the @ifset might be nested.)
871: %
872: \def\conditionalsucceed#1{%
873: \edef\temp{%
874: % Remember the current value of \E#1.
875: \let\nece{prevE#1} = \nece{E#1}%
876: %
877: % At the `@end #1', redefine \E#1 to be its previous value.
878: \def\nece{E#1}{\let\nece{E#1} = \nece{prevE#1}}%
879: }%
880: \temp
881: }
882:
883: % We need to expand lots of \csname's, but we don't want to expand the
884: % control sequences after we've constructed them.
885: %
886: \def\nece#1{\expandafter\noexpand\csname#1\endcsname}
887:
888: % @asis just yields its argument. Used with @table, for example.
889: %
890: \def\asis#1{#1}
891:
892: % @math means output in math mode.
893: % We don't use $'s directly in the definition of \math because control
894: % sequences like \math are expanded when the toc file is written. Then,
895: % we read the toc file back, the $'s will be normal characters (as they
896: % should be, according to the definition of Texinfo). So we must use a
897: % control sequence to switch into and out of math mode.
898: %
899: % This isn't quite enough for @math to work properly in indices, but it
900: % seems unlikely it will ever be needed there.
901: %
902: \let\implicitmath = $
903: \def\math#1{\implicitmath #1\implicitmath}
904:
905: % @bullet and @minus need the same treatment as @math, just above.
906: \def\bullet{\implicitmath\ptexbullet\implicitmath}
907: \def\minus{\implicitmath-\implicitmath}
908:
909: \def\node{\ENVcheck\parsearg\nodezzz}
910: \def\nodezzz#1{\nodexxx [#1,]}
911: \def\nodexxx[#1,#2]{\gdef\lastnode{#1}}
912: \let\nwnode=\node
913: \let\lastnode=\relax
914:
915: \def\donoderef{\ifx\lastnode\relax\else
916: \expandafter\expandafter\expandafter\setref{\lastnode}\fi
917: \global\let\lastnode=\relax}
918:
919: \def\unnumbnoderef{\ifx\lastnode\relax\else
920: \expandafter\expandafter\expandafter\unnumbsetref{\lastnode}\fi
921: \global\let\lastnode=\relax}
922:
923: \def\appendixnoderef{\ifx\lastnode\relax\else
924: \expandafter\expandafter\expandafter\appendixsetref{\lastnode}\fi
925: \global\let\lastnode=\relax}
926:
927: \let\refill=\relax
928:
929: % @setfilename is done at the beginning of every texinfo file.
930: % So open here the files we need to have open while reading the input.
931: % This makes it possible to make a .fmt file for texinfo.
932: \def\setfilename{%
933: \readauxfile
934: \opencontents
935: \openindices
936: \fixbackslash % Turn off hack to swallow `\input texinfo'.
937: \global\let\setfilename=\comment % Ignore extra @setfilename cmds.
938: \comment % Ignore the actual filename.
939: }
940:
941: \outer\def\bye{\pagealignmacro\tracingstats=1\ptexend}
942:
943: \def\inforef #1{\inforefzzz #1,,,,**}
944: \def\inforefzzz #1,#2,#3,#4**{\putwordSee{} \putwordInfo{} \putwordfile{} \file{\ignorespaces #3{}},
945: node \samp{\ignorespaces#1{}}}
946:
947: \def\macro#1{\begingroup\ignoresections\catcode`\#=6\def\macrotemp{#1}\parsearg\macroxxx}
948: \def\macroxxx#1#2 \end macro{%
949: \expandafter\gdef\macrotemp#1{#2}%
950: \endgroup}
951:
952: %\def\linemacro#1{\begingroup\ignoresections\catcode`\#=6\def\macrotemp{#1}\parsearg\linemacroxxx}
953: %\def\linemacroxxx#1#2 \end linemacro{%
954: %\let\parsearg=\relax
955: %\edef\macrotempx{\csname M\butfirst\expandafter\string\macrotemp\endcsname}%
956: %\expandafter\xdef\macrotemp{\parsearg\macrotempx}%
957: %\expandafter\gdef\macrotempx#1{#2}%
958: %\endgroup}
959:
960: %\def\butfirst#1{}
961:
962: \message{fonts,}
963:
964: % Font-change commands.
965:
966: % Texinfo supports the sans serif font style, which plain TeX does not.
967: % So we set up a \sf analogous to plain's \rm, etc.
968: \newfam\sffam
969: \def\sf{\fam=\sffam \tensf}
970: \let\li = \sf % Sometimes we call it \li, not \sf.
971:
972: % We don't need math for this one.
973: \def\ttsl{\tenttsl}
974:
975: %% Try out Computer Modern fonts at \magstephalf
976: \let\mainmagstep=\magstephalf
977:
978: % Set the font macro #1 to the font named #2, adding on the
979: % specified font prefix (normally `cm').
980: % #3 is the font's design size, #4 is a scale factor
981: \def\setfont#1#2#3#4{\font#1=\fontprefix#2#3 scaled #4}
982:
983: % Use cm as the default font prefix.
984: % To specify the font prefix, you must define \fontprefix
985: % before you read in texinfo.tex.
986: \ifx\fontprefix\undefined
987: \def\fontprefix{cm}
988: \fi
989: % Support font families that don't use the same naming scheme as CM.
990: \def\rmshape{r}
991: \def\rmbshape{bx} %where the normal face is bold
992: \def\bfshape{b}
993: \def\bxshape{bx}
994: \def\ttshape{tt}
995: \def\ttbshape{tt}
996: \def\ttslshape{sltt}
997: \def\itshape{ti}
998: \def\itbshape{bxti}
999: \def\slshape{sl}
1000: \def\slbshape{bxsl}
1001: \def\sfshape{ss}
1002: \def\sfbshape{ss}
1003: \def\scshape{csc}
1004: \def\scbshape{csc}
1005:
1006: \ifx\bigger\relax
1007: \let\mainmagstep=\magstep1
1008: \setfont\textrm\rmshape{12}{1000}
1009: \setfont\texttt\ttshape{12}{1000}
1010: \else
1011: \setfont\textrm\rmshape{10}{\mainmagstep}
1012: \setfont\texttt\ttshape{10}{\mainmagstep}
1013: \fi
1014: % Instead of cmb10, you many want to use cmbx10.
1015: % cmbx10 is a prettier font on its own, but cmb10
1016: % looks better when embedded in a line with cmr10.
1017: \setfont\textbf\bfshape{10}{\mainmagstep}
1018: \setfont\textit\itshape{10}{\mainmagstep}
1019: \setfont\textsl\slshape{10}{\mainmagstep}
1020: \setfont\textsf\sfshape{10}{\mainmagstep}
1021: \setfont\textsc\scshape{10}{\mainmagstep}
1022: \setfont\textttsl\ttslshape{10}{\mainmagstep}
1023: \font\texti=cmmi10 scaled \mainmagstep
1024: \font\textsy=cmsy10 scaled \mainmagstep
1025:
1026: % A few fonts for @defun, etc.
1027: \setfont\defbf\bxshape{10}{\magstep1} %was 1314
1028: \setfont\deftt\ttshape{10}{\magstep1}
1029: \def\df{\let\tentt=\deftt \let\tenbf = \defbf \bf}
1030:
1031: % Fonts for indices and small examples.
1032: % We actually use the slanted font rather than the italic,
1033: % because texinfo normally uses the slanted fonts for that.
1034: % Do not make many font distinctions in general in the index, since they
1035: % aren't very useful.
1036: \setfont\ninett\ttshape{9}{1000}
1037: \setfont\indrm\rmshape{9}{1000}
1038: \setfont\indit\slshape{9}{1000}
1039: \let\indsl=\indit
1040: \let\indtt=\ninett
1041: \let\indttsl=\ninett
1042: \let\indsf=\indrm
1043: \let\indbf=\indrm
1044: \setfont\indsc\scshape{10}{900}
1045: \font\indi=cmmi9
1046: \font\indsy=cmsy9
1047:
1048: % Fonts for headings
1049: \setfont\chaprm\rmbshape{12}{\magstep2}
1050: \setfont\chapit\itbshape{10}{\magstep3}
1051: \setfont\chapsl\slbshape{10}{\magstep3}
1052: \setfont\chaptt\ttbshape{12}{\magstep2}
1053: \setfont\chapttsl\ttslshape{10}{\magstep3}
1054: \setfont\chapsf\sfbshape{12}{\magstep2}
1055: \let\chapbf=\chaprm
1056: \setfont\chapsc\scbshape{10}{\magstep3}
1057: \font\chapi=cmmi12 scaled \magstep2
1058: \font\chapsy=cmsy10 scaled \magstep3
1059:
1060: \setfont\secrm\rmbshape{12}{\magstep1}
1061: \setfont\secit\itbshape{10}{\magstep2}
1062: \setfont\secsl\slbshape{10}{\magstep2}
1063: \setfont\sectt\ttbshape{12}{\magstep1}
1064: \setfont\secttsl\ttslshape{10}{\magstep2}
1065: \setfont\secsf\sfbshape{12}{\magstep1}
1066: \let\secbf\secrm
1067: \setfont\secsc\scbshape{10}{\magstep2}
1068: \font\seci=cmmi12 scaled \magstep1
1069: \font\secsy=cmsy10 scaled \magstep2
1070:
1071: % \setfont\ssecrm\bxshape{10}{\magstep1} % This size an font looked bad.
1072: % \setfont\ssecit\itshape{10}{\magstep1} % The letters were too crowded.
1073: % \setfont\ssecsl\slshape{10}{\magstep1}
1074: % \setfont\ssectt\ttshape{10}{\magstep1}
1075: % \setfont\ssecsf\sfshape{10}{\magstep1}
1076:
1077: %\setfont\ssecrm\bfshape{10}{1315} % Note the use of cmb rather than cmbx.
1078: %\setfont\ssecit\itshape{10}{1315} % Also, the size is a little larger than
1079: %\setfont\ssecsl\slshape{10}{1315} % being scaled magstep1.
1080: %\setfont\ssectt\ttshape{10}{1315}
1081: %\setfont\ssecsf\sfshape{10}{1315}
1082:
1083: %\let\ssecbf=\ssecrm
1084:
1085: \setfont\ssecrm\rmbshape{12}{\magstephalf}
1086: \setfont\ssecit\itbshape{10}{1315}
1087: \setfont\ssecsl\slbshape{10}{1315}
1088: \setfont\ssectt\ttbshape{12}{\magstephalf}
1089: \setfont\ssecttsl\ttslshape{10}{\magstep1}
1090: \setfont\ssecsf\sfbshape{12}{\magstephalf}
1091: \let\ssecbf\ssecrm
1092: \setfont\ssecsc\scbshape{10}{\magstep1}
1093: \font\sseci=cmmi12 scaled \magstephalf
1094: \font\ssecsy=cmsy10 scaled \magstep1
1095: % The smallcaps and symbol fonts should actually be scaled \magstep1.5,
1096: % but that is not a standard magnification.
1097:
1098: % Fonts for title page:
1099: \setfont\titlerm\rmbshape{12}{\magstep3}
1100: \let\authorrm = \secrm
1101:
1102: % In order for the font changes to affect most math symbols and letters,
1103: % we have to define the \textfont of the standard families. Since
1104: % texinfo doesn't allow for producing subscripts and superscripts, we
1105: % don't bother to reset \scriptfont and \scriptscriptfont (which would
1106: % also require loading a lot more fonts).
1107: %
1108: \def\resetmathfonts{%
1109: \textfont0 = \tenrm \textfont1 = \teni \textfont2 = \tensy
1110: \textfont\itfam = \tenit \textfont\slfam = \tensl \textfont\bffam = \tenbf
1111: \textfont\ttfam = \tentt \textfont\sffam = \tensf
1112: }
1113:
1114:
1115: % The font-changing commands redefine the meanings of \tenSTYLE, instead
1116: % of just \STYLE. We do this so that font changes will continue to work
1117: % in math mode, where it is the current \fam that is relevant in most
1118: % cases, not the current font. Plain TeX does \def\bf{\fam=\bffam
1119: % \tenbf}, for example. By redefining \tenbf, we obviate the need to
1120: % redefine \bf itself.
1121: \def\textfonts{%
1122: \let\tenrm=\textrm \let\tenit=\textit \let\tensl=\textsl
1123: \let\tenbf=\textbf \let\tentt=\texttt \let\smallcaps=\textsc
1124: \let\tensf=\textsf \let\teni=\texti \let\tensy=\textsy \let\tenttsl=\textttsl
1125: \resetmathfonts}
1126: \def\chapfonts{%
1127: \let\tenrm=\chaprm \let\tenit=\chapit \let\tensl=\chapsl
1128: \let\tenbf=\chapbf \let\tentt=\chaptt \let\smallcaps=\chapsc
1129: \let\tensf=\chapsf \let\teni=\chapi \let\tensy=\chapsy \let\tenttsl=\chapttsl
1130: \resetmathfonts}
1131: \def\secfonts{%
1132: \let\tenrm=\secrm \let\tenit=\secit \let\tensl=\secsl
1133: \let\tenbf=\secbf \let\tentt=\sectt \let\smallcaps=\secsc
1134: \let\tensf=\secsf \let\teni=\seci \let\tensy=\secsy \let\tenttsl=\secttsl
1135: \resetmathfonts}
1136: \def\subsecfonts{%
1137: \let\tenrm=\ssecrm \let\tenit=\ssecit \let\tensl=\ssecsl
1138: \let\tenbf=\ssecbf \let\tentt=\ssectt \let\smallcaps=\ssecsc
1139: \let\tensf=\ssecsf \let\teni=\sseci \let\tensy=\ssecsy \let\tenttsl=\ssecttsl
1140: \resetmathfonts}
1141: \def\indexfonts{%
1142: \let\tenrm=\indrm \let\tenit=\indit \let\tensl=\indsl
1143: \let\tenbf=\indbf \let\tentt=\indtt \let\smallcaps=\indsc
1144: \let\tensf=\indsf \let\teni=\indi \let\tensy=\indsy \let\tenttsl=\indttsl
1145: \resetmathfonts}
1146:
1147: % Set up the default fonts, so we can use them for creating boxes.
1148: %
1149: \textfonts
1150:
1151: % Count depth in font-changes, for error checks
1152: \newcount\fontdepth \fontdepth=0
1153:
1154: % Fonts for short table of contents.
1155: \setfont\shortcontrm\rmshape{12}{1000}
1156: \setfont\shortcontbf\bxshape{12}{1000}
1157: \setfont\shortcontsl\slshape{12}{1000}
1158:
1159: %% Add scribe-like font environments, plus @l for inline lisp (usually sans
1160: %% serif) and @ii for TeX italic
1161:
1162: % \smartitalic{ARG} outputs arg in italics, followed by an italic correction
1163: % unless the following character is such as not to need one.
1164: \def\smartitalicx{\ifx\next,\else\ifx\next-\else\ifx\next.\else\/\fi\fi\fi}
1165: \def\smartitalic#1{{\sl #1}\futurelet\next\smartitalicx}
1166:
1167: \let\i=\smartitalic
1168: \let\var=\smartitalic
1169: \let\dfn=\smartitalic
1170: \let\emph=\smartitalic
1171: \let\cite=\smartitalic
1172:
1173: \def\b#1{{\bf #1}}
1174: \let\strong=\b
1175:
1176: % We can't just use \exhyphenpenalty, because that only has effect at
1177: % the end of a paragraph. Restore normal hyphenation at the end of the
1178: % group within which \nohyphenation is presumably called.
1179: %
1180: \def\nohyphenation{\hyphenchar\font = -1 \aftergroup\restorehyphenation}
1181: \def\restorehyphenation{\hyphenchar\font = `- }
1182:
1183: \def\t#1{%
1184: {\tt \rawbackslash \frenchspacing #1}%
1185: \null
1186: }
1187: \let\ttfont=\t
1188: \def\samp #1{`\tclose{#1}'\null}
1189: \def\key #1{{\ttsl \nohyphenation \uppercase{#1}}\null}
1190: \def\ctrl #1{{\tt \rawbackslash \hat}#1}
1191:
1192: \let\file=\samp
1193: \let\url=\samp % perhaps include a hypertex \special eventually
1194:
1195: % @code is a modification of @t,
1196: % which makes spaces the same size as normal in the surrounding text.
1197: \def\tclose#1{%
1198: {%
1199: % Change normal interword space to be same as for the current font.
1200: \spaceskip = \fontdimen2\font
1201: %
1202: % Switch to typewriter.
1203: \tt
1204: %
1205: % But `\ ' produces the large typewriter interword space.
1206: \def\ {{\spaceskip = 0pt{} }}%
1207: %
1208: % Turn off hyphenation.
1209: \nohyphenation
1210: %
1211: \rawbackslash
1212: \frenchspacing
1213: #1%
1214: }%
1215: \null
1216: }
1217:
1218: % We *must* turn on hyphenation at `-' and `_' in \code.
1219: % Otherwise, it is too hard to avoid overfull hboxes
1220: % in the Emacs manual, the Library manual, etc.
1221:
1222: % Unfortunately, TeX uses one parameter (\hyphenchar) to control
1223: % both hyphenation at - and hyphenation within words.
1224: % We must therefore turn them both off (\tclose does that)
1225: % and arrange explicitly to hyphenate an a dash.
1226: % -- rms.
1227: {
1228: \catcode`\-=\active
1229: \catcode`\_=\active
1230: \global\def\code{\begingroup \catcode`\-=\active \let-\codedash \catcode`\_=\active \let_\codeunder \codex}
1231: % The following is used by \doprintindex to insure that long function names
1232: % wrap around. It is necessary for - and _ to be active before the index is
1233: % read from the file, as \entry parses the arguments long before \code is
1234: % ever called. -- mycroft
1235: \global\def\indexbreaks{\catcode`\-=\active \let-\realdash \catcode`\_=\active \let_\realunder}
1236: }
1237:
1238: \def\realdash{-}
1239: \def\realunder{_}
1240: \def\codedash{-\discretionary{}{}{}}
1241: \def\codeunder{\normalunderscore\discretionary{}{}{}}
1242: \def\codex #1{\tclose{#1}\endgroup}
1243:
1244: %\let\exp=\tclose %Was temporary
1245:
1246: % @kbd is like @code, except that if the argument is just one @key command,
1247: % then @kbd has no effect.
1248: %
1249: \def\xkey{\key}
1250: \def\kbdfoo#1#2#3\par{\def\one{#1}\def\three{#3}\def\threex{??}%
1251: \ifx\one\xkey\ifx\threex\three \key{#2}%
1252: \else{\tclose{\ttsl\look}}\fi
1253: \else{\tclose{\ttsl\look}}\fi}
1254:
1255: % Check if we are currently using a typewriter font. Since all the
1256: % Computer Modern typewriter fonts have zero interword stretch (and
1257: % shrink), and it is reasonable to expect all typewriter fonts to have
1258: % this property, we can check that font parameter.
1259: %
1260: \def\ifmonospace{\ifdim\fontdimen3\font=0pt }
1261:
1262: % Typeset a dimension, e.g., `in' or `pt'. The only reason for the
1263: % argument is to make the input look right: @dmn{pt} instead of
1264: % @dmn{}pt.
1265: %
1266: \def\dmn#1{\thinspace #1}
1267:
1268: \def\kbd#1{\def\look{#1}\expandafter\kbdfoo\look??\par}
1269:
1270: \def\l#1{{\li #1}\null} %
1271:
1272: \def\r#1{{\rm #1}} % roman font
1273: % Use of \lowercase was suggested.
1274: \def\sc#1{{\smallcaps#1}} % smallcaps font
1275: \def\ii#1{{\it #1}} % italic font
1276:
1277: \message{page headings,}
1278:
1279: \newskip\titlepagetopglue \titlepagetopglue = 1.5in
1280: \newskip\titlepagebottomglue \titlepagebottomglue = 2pc
1281:
1282: % First the title page. Must do @settitle before @titlepage.
1283: \def\titlefont#1{{\titlerm #1}}
1284:
1285: \newif\ifseenauthor
1286: \newif\iffinishedtitlepage
1287:
1288: \def\shorttitlepage{\parsearg\shorttitlepagezzz}
1289: \def\shorttitlepagezzz #1{\begingroup\hbox{}\vskip 1.5in \chaprm \centerline{#1}%
1290: \endgroup\page\hbox{}\page}
1291:
1292: \def\titlepage{\begingroup \parindent=0pt \textfonts
1293: \let\subtitlerm=\tenrm
1294: % I deinstalled the following change because \cmr12 is undefined.
1295: % This change was not in the ChangeLog anyway. --rms.
1296: % \let\subtitlerm=\cmr12
1297: \def\subtitlefont{\subtitlerm \normalbaselineskip = 13pt \normalbaselines}%
1298: %
1299: \def\authorfont{\authorrm \normalbaselineskip = 16pt \normalbaselines}%
1300: %
1301: % Leave some space at the very top of the page.
1302: \vglue\titlepagetopglue
1303: %
1304: % Now you can print the title using @title.
1305: \def\title{\parsearg\titlezzz}%
1306: \def\titlezzz##1{\leftline{\titlefont{##1}}
1307: % print a rule at the page bottom also.
1308: \finishedtitlepagefalse
1309: \vskip4pt \hrule height 4pt width \hsize \vskip4pt}%
1310: % No rule at page bottom unless we print one at the top with @title.
1311: \finishedtitlepagetrue
1312: %
1313: % Now you can put text using @subtitle.
1314: \def\subtitle{\parsearg\subtitlezzz}%
1315: \def\subtitlezzz##1{{\subtitlefont \rightline{##1}}}%
1316: %
1317: % @author should come last, but may come many times.
1318: \def\author{\parsearg\authorzzz}%
1319: \def\authorzzz##1{\ifseenauthor\else\vskip 0pt plus 1filll\seenauthortrue\fi
1320: {\authorfont \leftline{##1}}}%
1321: %
1322: % Most title ``pages'' are actually two pages long, with space
1323: % at the top of the second. We don't want the ragged left on the second.
1324: \let\oldpage = \page
1325: \def\page{%
1326: \iffinishedtitlepage\else
1327: \finishtitlepage
1328: \fi
1329: \oldpage
1330: \let\page = \oldpage
1331: \hbox{}}%
1332: % \def\page{\oldpage \hbox{}}
1333: }
1334:
1335: \def\Etitlepage{%
1336: \iffinishedtitlepage\else
1337: \finishtitlepage
1338: \fi
1339: % It is important to do the page break before ending the group,
1340: % because the headline and footline are only empty inside the group.
1341: % If we use the new definition of \page, we always get a blank page
1342: % after the title page, which we certainly don't want.
1343: \oldpage
1344: \endgroup
1345: \HEADINGSon
1346: }
1347:
1348: \def\finishtitlepage{%
1349: \vskip4pt \hrule height 2pt width \hsize
1350: \vskip\titlepagebottomglue
1351: \finishedtitlepagetrue
1352: }
1353:
1354: %%% Set up page headings and footings.
1355:
1356: \let\thispage=\folio
1357:
1358: \newtoks \evenheadline % Token sequence for heading line of even pages
1359: \newtoks \oddheadline % Token sequence for heading line of odd pages
1360: \newtoks \evenfootline % Token sequence for footing line of even pages
1361: \newtoks \oddfootline % Token sequence for footing line of odd pages
1362:
1363: % Now make Tex use those variables
1364: \headline={{\textfonts\rm \ifodd\pageno \the\oddheadline
1365: \else \the\evenheadline \fi}}
1366: \footline={{\textfonts\rm \ifodd\pageno \the\oddfootline
1367: \else \the\evenfootline \fi}\HEADINGShook}
1368: \let\HEADINGShook=\relax
1369:
1370: % Commands to set those variables.
1371: % For example, this is what @headings on does
1372: % @evenheading @thistitle|@thispage|@thischapter
1373: % @oddheading @thischapter|@thispage|@thistitle
1374: % @evenfooting @thisfile||
1375: % @oddfooting ||@thisfile
1376:
1377: \def\evenheading{\parsearg\evenheadingxxx}
1378: \def\oddheading{\parsearg\oddheadingxxx}
1379: \def\everyheading{\parsearg\everyheadingxxx}
1380:
1381: \def\evenfooting{\parsearg\evenfootingxxx}
1382: \def\oddfooting{\parsearg\oddfootingxxx}
1383: \def\everyfooting{\parsearg\everyfootingxxx}
1384:
1385: {\catcode`\@=0 %
1386:
1387: \gdef\evenheadingxxx #1{\evenheadingyyy #1@|@|@|@|\finish}
1388: \gdef\evenheadingyyy #1@|#2@|#3@|#4\finish{%
1389: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1390:
1391: \gdef\oddheadingxxx #1{\oddheadingyyy #1@|@|@|@|\finish}
1392: \gdef\oddheadingyyy #1@|#2@|#3@|#4\finish{%
1393: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1394:
1395: \gdef\everyheadingxxx #1{\everyheadingyyy #1@|@|@|@|\finish}
1396: \gdef\everyheadingyyy #1@|#2@|#3@|#4\finish{%
1397: \global\evenheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
1398: \global\oddheadline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1399:
1400: \gdef\evenfootingxxx #1{\evenfootingyyy #1@|@|@|@|\finish}
1401: \gdef\evenfootingyyy #1@|#2@|#3@|#4\finish{%
1402: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1403:
1404: \gdef\oddfootingxxx #1{\oddfootingyyy #1@|@|@|@|\finish}
1405: \gdef\oddfootingyyy #1@|#2@|#3@|#4\finish{%
1406: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1407:
1408: \gdef\everyfootingxxx #1{\everyfootingyyy #1@|@|@|@|\finish}
1409: \gdef\everyfootingyyy #1@|#2@|#3@|#4\finish{%
1410: \global\evenfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}
1411: \global\oddfootline={\rlap{\centerline{#2}}\line{#1\hfil#3}}}
1412: %
1413: }% unbind the catcode of @.
1414:
1415: % @headings double turns headings on for double-sided printing.
1416: % @headings single turns headings on for single-sided printing.
1417: % @headings off turns them off.
1418: % @headings on same as @headings double, retained for compatibility.
1419: % @headings after turns on double-sided headings after this page.
1420: % @headings doubleafter turns on double-sided headings after this page.
1421: % @headings singleafter turns on single-sided headings after this page.
1422: % By default, they are off.
1423:
1424: \def\headings #1 {\csname HEADINGS#1\endcsname}
1425:
1426: \def\HEADINGSoff{
1427: \global\evenheadline={\hfil} \global\evenfootline={\hfil}
1428: \global\oddheadline={\hfil} \global\oddfootline={\hfil}}
1429: \HEADINGSoff
1430: % When we turn headings on, set the page number to 1.
1431: % For double-sided printing, put current file name in lower left corner,
1432: % chapter name on inside top of right hand pages, document
1433: % title on inside top of left hand pages, and page numbers on outside top
1434: % edge of all pages.
1435: \def\HEADINGSdouble{
1436: %\pagealignmacro
1437: \global\pageno=1
1438: \global\evenfootline={\hfil}
1439: \global\oddfootline={\hfil}
1440: \global\evenheadline={\line{\folio\hfil\thistitle}}
1441: \global\oddheadline={\line{\thischapter\hfil\folio}}
1442: }
1443: % For single-sided printing, chapter title goes across top left of page,
1444: % page number on top right.
1445: \def\HEADINGSsingle{
1446: %\pagealignmacro
1447: \global\pageno=1
1448: \global\evenfootline={\hfil}
1449: \global\oddfootline={\hfil}
1450: \global\evenheadline={\line{\thischapter\hfil\folio}}
1451: \global\oddheadline={\line{\thischapter\hfil\folio}}
1452: }
1453: \def\HEADINGSon{\HEADINGSdouble}
1454:
1455: \def\HEADINGSafter{\let\HEADINGShook=\HEADINGSdoublex}
1456: \let\HEADINGSdoubleafter=\HEADINGSafter
1457: \def\HEADINGSdoublex{%
1458: \global\evenfootline={\hfil}
1459: \global\oddfootline={\hfil}
1460: \global\evenheadline={\line{\folio\hfil\thistitle}}
1461: \global\oddheadline={\line{\thischapter\hfil\folio}}
1462: }
1463:
1464: \def\HEADINGSsingleafter{\let\HEADINGShook=\HEADINGSsinglex}
1465: \def\HEADINGSsinglex{%
1466: \global\evenfootline={\hfil}
1467: \global\oddfootline={\hfil}
1468: \global\evenheadline={\line{\thischapter\hfil\folio}}
1469: \global\oddheadline={\line{\thischapter\hfil\folio}}
1470: }
1471:
1472: % Subroutines used in generating headings
1473: % Produces Day Month Year style of output.
1474: \def\today{\number\day\space
1475: \ifcase\month\or
1476: January\or February\or March\or April\or May\or June\or
1477: July\or August\or September\or October\or November\or December\fi
1478: \space\number\year}
1479:
1480: % Use this if you want the Month Day, Year style of output.
1481: %\def\today{\ifcase\month\or
1482: %January\or February\or March\or April\or May\or June\or
1483: %July\or August\or September\or October\or November\or December\fi
1484: %\space\number\day, \number\year}
1485:
1486: % @settitle line... specifies the title of the document, for headings
1487: % It generates no output of its own
1488:
1489: \def\thistitle{No Title}
1490: \def\settitle{\parsearg\settitlezzz}
1491: \def\settitlezzz #1{\gdef\thistitle{#1}}
1492:
1493: \message{tables,}
1494:
1495: % @tabs -- simple alignment
1496:
1497: % These don't work. For one thing, \+ is defined as outer.
1498: % So these macros cannot even be defined.
1499:
1500: %\def\tabs{\parsearg\tabszzz}
1501: %\def\tabszzz #1{\settabs\+#1\cr}
1502: %\def\tabline{\parsearg\tablinezzz}
1503: %\def\tablinezzz #1{\+#1\cr}
1504: %\def\&{&}
1505:
1506: % Tables -- @table, @ftable, @vtable, @item(x), @kitem(x), @xitem(x).
1507:
1508: % default indentation of table text
1509: \newdimen\tableindent \tableindent=.8in
1510: % default indentation of @itemize and @enumerate text
1511: \newdimen\itemindent \itemindent=.3in
1512: % margin between end of table item and start of table text.
1513: \newdimen\itemmargin \itemmargin=.1in
1514:
1515: % used internally for \itemindent minus \itemmargin
1516: \newdimen\itemmax
1517:
1518: % Note @table, @vtable, and @vtable define @item, @itemx, etc., with
1519: % these defs.
1520: % They also define \itemindex
1521: % to index the item name in whatever manner is desired (perhaps none).
1522:
1523: \newif\ifitemxneedsnegativevskip
1524:
1525: \def\itemxpar{\par\ifitemxneedsnegativevskip\nobreak\vskip-\parskip\nobreak\fi}
1526:
1527: \def\internalBitem{\smallbreak \parsearg\itemzzz}
1528: \def\internalBitemx{\itemxpar \parsearg\itemzzz}
1529:
1530: \def\internalBxitem "#1"{\def\xitemsubtopix{#1} \smallbreak \parsearg\xitemzzz}
1531: \def\internalBxitemx "#1"{\def\xitemsubtopix{#1} \itemxpar \parsearg\xitemzzz}
1532:
1533: \def\internalBkitem{\smallbreak \parsearg\kitemzzz}
1534: \def\internalBkitemx{\itemxpar \parsearg\kitemzzz}
1535:
1536: \def\kitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \lastfunction}}%
1537: \itemzzz {#1}}
1538:
1539: \def\xitemzzz #1{\dosubind {kw}{\code{#1}}{for {\bf \xitemsubtopic}}%
1540: \itemzzz {#1}}
1541:
1542: \def\itemzzz #1{\begingroup %
1543: \advance\hsize by -\rightskip
1544: \advance\hsize by -\tableindent
1545: \setbox0=\hbox{\itemfont{#1}}%
1546: \itemindex{#1}%
1547: \nobreak % This prevents a break before @itemx.
1548: %
1549: % Be sure we are not still in the middle of a paragraph.
1550: %{\parskip = 0in
1551: %\par
1552: %}%
1553: %
1554: % If the item text does not fit in the space we have, put it on a line
1555: % by itself, and do not allow a page break either before or after that
1556: % line. We do not start a paragraph here because then if the next
1557: % command is, e.g., @kindex, the whatsit would get put into the
1558: % horizontal list on a line by itself, resulting in extra blank space.
1559: \ifdim \wd0>\itemmax
1560: %
1561: % Make this a paragraph so we get the \parskip glue and wrapping,
1562: % but leave it ragged-right.
1563: \begingroup
1564: \advance\leftskip by-\tableindent
1565: \advance\hsize by\tableindent
1566: \advance\rightskip by0pt plus1fil
1567: \leavevmode\unhbox0\par
1568: \endgroup
1569: %
1570: % We're going to be starting a paragraph, but we don't want the
1571: % \parskip glue -- logically it's part of the @item we just started.
1572: \nobreak \vskip-\parskip
1573: %
1574: % Stop a page break at the \parskip glue coming up. Unfortunately
1575: % we can't prevent a possible page break at the following
1576: % \baselineskip glue.
1577: \nobreak
1578: \endgroup
1579: \itemxneedsnegativevskipfalse
1580: \else
1581: % The item text fits into the space. Start a paragraph, so that the
1582: % following text (if any) will end up on the same line. Since that
1583: % text will be indented by \tableindent, we make the item text be in
1584: % a zero-width box.
1585: \noindent
1586: \rlap{\hskip -\tableindent\box0}\ignorespaces%
1587: \endgroup%
1588: \itemxneedsnegativevskiptrue%
1589: \fi
1590: }
1591:
1592: \def\item{\errmessage{@item while not in a table}}
1593: \def\itemx{\errmessage{@itemx while not in a table}}
1594: \def\kitem{\errmessage{@kitem while not in a table}}
1595: \def\kitemx{\errmessage{@kitemx while not in a table}}
1596: \def\xitem{\errmessage{@xitem while not in a table}}
1597: \def\xitemx{\errmessage{@xitemx while not in a table}}
1598:
1599: %% Contains a kludge to get @end[description] to work
1600: \def\description{\tablez{\dontindex}{1}{}{}{}{}}
1601:
1602: \def\table{\begingroup\inENV\obeylines\obeyspaces\tablex}
1603: {\obeylines\obeyspaces%
1604: \gdef\tablex #1^^M{%
1605: \tabley\dontindex#1 \endtabley}}
1606:
1607: \def\ftable{\begingroup\inENV\obeylines\obeyspaces\ftablex}
1608: {\obeylines\obeyspaces%
1609: \gdef\ftablex #1^^M{%
1610: \tabley\fnitemindex#1 \endtabley
1611: \def\Eftable{\endgraf\afterenvbreak\endgroup}%
1612: \let\Etable=\relax}}
1613:
1614: \def\vtable{\begingroup\inENV\obeylines\obeyspaces\vtablex}
1615: {\obeylines\obeyspaces%
1616: \gdef\vtablex #1^^M{%
1617: \tabley\vritemindex#1 \endtabley
1618: \def\Evtable{\endgraf\afterenvbreak\endgroup}%
1619: \let\Etable=\relax}}
1620:
1621: \def\dontindex #1{}
1622: \def\fnitemindex #1{\doind {fn}{\code{#1}}}%
1623: \def\vritemindex #1{\doind {vr}{\code{#1}}}%
1624:
1625: {\obeyspaces %
1626: \gdef\tabley#1#2 #3 #4 #5 #6 #7\endtabley{\endgroup%
1627: \tablez{#1}{#2}{#3}{#4}{#5}{#6}}}
1628:
1629: \def\tablez #1#2#3#4#5#6{%
1630: \aboveenvbreak %
1631: \begingroup %
1632: \def\Edescription{\Etable}% Necessary kludge.
1633: \let\itemindex=#1%
1634: \ifnum 0#3>0 \advance \leftskip by #3\mil \fi %
1635: \ifnum 0#4>0 \tableindent=#4\mil \fi %
1636: \ifnum 0#5>0 \advance \rightskip by #5\mil \fi %
1637: \def\itemfont{#2}%
1638: \itemmax=\tableindent %
1639: \advance \itemmax by -\itemmargin %
1640: \advance \leftskip by \tableindent %
1641: \exdentamount=\tableindent
1642: \parindent = 0pt
1643: \parskip = \smallskipamount
1644: \ifdim \parskip=0pt \parskip=2pt \fi%
1645: \def\Etable{\endgraf\afterenvbreak\endgroup}%
1646: \let\item = \internalBitem %
1647: \let\itemx = \internalBitemx %
1648: \let\kitem = \internalBkitem %
1649: \let\kitemx = \internalBkitemx %
1650: \let\xitem = \internalBxitem %
1651: \let\xitemx = \internalBxitemx %
1652: }
1653:
1654: % This is the counter used by @enumerate, which is really @itemize
1655:
1656: \newcount \itemno
1657:
1658: \def\itemize{\parsearg\itemizezzz}
1659:
1660: \def\itemizezzz #1{%
1661: \begingroup % ended by the @end itemsize
1662: \itemizey {#1}{\Eitemize}
1663: }
1664:
1665: \def\itemizey #1#2{%
1666: \aboveenvbreak %
1667: \itemmax=\itemindent %
1668: \advance \itemmax by -\itemmargin %
1669: \advance \leftskip by \itemindent %
1670: \exdentamount=\itemindent
1671: \parindent = 0pt %
1672: \parskip = \smallskipamount %
1673: \ifdim \parskip=0pt \parskip=2pt \fi%
1674: \def#2{\endgraf\afterenvbreak\endgroup}%
1675: \def\itemcontents{#1}%
1676: \let\item=\itemizeitem}
1677:
1678: % Set sfcode to normal for the chars that usually have another value.
1679: % These are `.?!:;,'
1680: \def\frenchspacing{\sfcode46=1000 \sfcode63=1000 \sfcode33=1000
1681: \sfcode58=1000 \sfcode59=1000 \sfcode44=1000 }
1682:
1683: % \splitoff TOKENS\endmark defines \first to be the first token in
1684: % TOKENS, and \rest to be the remainder.
1685: %
1686: \def\splitoff#1#2\endmark{\def\first{#1}\def\rest{#2}}%
1687:
1688: % Allow an optional argument of an uppercase letter, lowercase letter,
1689: % or number, to specify the first label in the enumerated list. No
1690: % argument is the same as `1'.
1691: %
1692: \def\enumerate{\parsearg\enumeratezzz}
1693: \def\enumeratezzz #1{\enumeratey #1 \endenumeratey}
1694: \def\enumeratey #1 #2\endenumeratey{%
1695: \begingroup % ended by the @end enumerate
1696: %
1697: % If we were given no argument, pretend we were given `1'.
1698: \def\thearg{#1}%
1699: \ifx\thearg\empty \def\thearg{1}\fi
1700: %
1701: % Detect if the argument is a single token. If so, it might be a
1702: % letter. Otherwise, the only valid thing it can be is a number.
1703: % (We will always have one token, because of the test we just made.
1704: % This is a good thing, since \splitoff doesn't work given nothing at
1705: % all -- the first parameter is undelimited.)
1706: \expandafter\splitoff\thearg\endmark
1707: \ifx\rest\empty
1708: % Only one token in the argument. It could still be anything.
1709: % A ``lowercase letter'' is one whose \lccode is nonzero.
1710: % An ``uppercase letter'' is one whose \lccode is both nonzero, and
1711: % not equal to itself.
1712: % Otherwise, we assume it's a number.
1713: %
1714: % We need the \relax at the end of the \ifnum lines to stop TeX from
1715: % continuing to look for a <number>.
1716: %
1717: \ifnum\lccode\expandafter`\thearg=0\relax
1718: \numericenumerate % a number (we hope)
1719: \else
1720: % It's a letter.
1721: \ifnum\lccode\expandafter`\thearg=\expandafter`\thearg\relax
1722: \lowercaseenumerate % lowercase letter
1723: \else
1724: \uppercaseenumerate % uppercase letter
1725: \fi
1726: \fi
1727: \else
1728: % Multiple tokens in the argument. We hope it's a number.
1729: \numericenumerate
1730: \fi
1731: }
1732:
1733: % An @enumerate whose labels are integers. The starting integer is
1734: % given in \thearg.
1735: %
1736: \def\numericenumerate{%
1737: \itemno = \thearg
1738: \startenumeration{\the\itemno}%
1739: }
1740:
1741: % The starting (lowercase) letter is in \thearg.
1742: \def\lowercaseenumerate{%
1743: \itemno = \expandafter`\thearg
1744: \startenumeration{%
1745: % Be sure we're not beyond the end of the alphabet.
1746: \ifnum\itemno=0
1747: \errmessage{No more lowercase letters in @enumerate; get a bigger
1748: alphabet}%
1749: \fi
1750: \char\lccode\itemno
1751: }%
1752: }
1753:
1754: % The starting (uppercase) letter is in \thearg.
1755: \def\uppercaseenumerate{%
1756: \itemno = \expandafter`\thearg
1757: \startenumeration{%
1758: % Be sure we're not beyond the end of the alphabet.
1759: \ifnum\itemno=0
1760: \errmessage{No more uppercase letters in @enumerate; get a bigger
1761: alphabet}
1762: \fi
1763: \char\uccode\itemno
1764: }%
1765: }
1766:
1767: % Call itemizey, adding a period to the first argument and supplying the
1768: % common last two arguments. Also subtract one from the initial value in
1769: % \itemno, since @item increments \itemno.
1770: %
1771: \def\startenumeration#1{%
1772: \advance\itemno by -1
1773: \itemizey{#1.}\Eenumerate\flushcr
1774: }
1775:
1776: % @alphaenumerate and @capsenumerate are abbreviations for giving an arg
1777: % to @enumerate.
1778: %
1779: \def\alphaenumerate{\enumerate{a}}
1780: \def\capsenumerate{\enumerate{A}}
1781: \def\Ealphaenumerate{\Eenumerate}
1782: \def\Ecapsenumerate{\Eenumerate}
1783:
1784: % Definition of @item while inside @itemize.
1785:
1786: \def\itemizeitem{%
1787: \advance\itemno by 1
1788: {\let\par=\endgraf \smallbreak}%
1789: \ifhmode \errmessage{\in hmode at itemizeitem}\fi
1790: {\parskip=0in \hskip 0pt
1791: \hbox to 0pt{\hss \itemcontents\hskip \itemmargin}%
1792: \vadjust{\penalty 1200}}%
1793: \flushcr}
1794:
1795: % @multitable macros
1796: % Amy Hendrickson, 8/18/94, 3/6/96
1797: %
1798: % @multitable ... @end multitable will make as many columns as desired.
1799: % Contents of each column will wrap at width given in preamble. Width
1800: % can be specified either with sample text given in a template line,
1801: % or in percent of \hsize, the current width of text on page.
1802:
1803: % Table can continue over pages but will only break between lines.
1804:
1805: % To make preamble:
1806: %
1807: % Either define widths of columns in terms of percent of \hsize:
1808: % @multitable @columnfractions .25 .3 .45
1809: % @item ...
1810: %
1811: % Numbers following @columnfractions are the percent of the total
1812: % current hsize to be used for each column. You may use as many
1813: % columns as desired.
1814:
1815: % Or use a template:
1816: % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
1817: % @item ...
1818: % using the widest term desired in each column.
1819: %
1820: % For those who want to use more than one line's worth of words in
1821: % the preamble, break the line within one argument and it
1822: % will parse correctly, i.e.,
1823: %
1824: % @multitable {Column 1 template} {Column 2 template} {Column 3
1825: % template}
1826: % Not:
1827: % @multitable {Column 1 template} {Column 2 template}
1828: % {Column 3 template}
1829:
1830: % Each new table line starts with @item, each subsequent new column
1831: % starts with @tab. Empty columns may be produced by supplying @tab's
1832: % with nothing between them for as many times as empty columns are needed,
1833: % ie, @tab@tab@tab will produce two empty columns.
1834:
1835: % @item, @tab, @multicolumn or @endmulticolumn do not need to be on their
1836: % own lines, but it will not hurt if they are.
1837:
1838: % Sample multitable:
1839:
1840: % @multitable {Column 1 template} {Column 2 template} {Column 3 template}
1841: % @item first col stuff @tab second col stuff @tab third col
1842: % @item
1843: % first col stuff
1844: % @tab
1845: % second col stuff
1846: % @tab
1847: % third col
1848: % @item first col stuff @tab second col stuff
1849: % @tab Many paragraphs of text may be used in any column.
1850: %
1851: % They will wrap at the width determined by the template.
1852: % @item@tab@tab This will be in third column.
1853: % @end multitable
1854:
1855: % Default dimensions may be reset by user.
1856: % @multitableparskip is vertical space between paragraphs in table.
1857: % @multitableparindent is paragraph indent in table.
1858: % @multitablecolmargin is horizontal space to be left between columns.
1859: % @multitablelinespace is space to leave between table items, baseline
1860: % to baseline.
1861: % 0pt means it depends on current normal line spacing.
1862:
1863: %%%%
1864: % Dimensions
1865:
1866: \newskip\multitableparskip
1867: \newskip\multitableparindent
1868: \newdimen\multitablecolspace
1869: \newskip\multitablelinespace
1870: \multitableparskip=0pt
1871: \multitableparindent=6pt
1872: \multitablecolspace=12pt
1873: \multitablelinespace=0pt
1874:
1875: %%%%
1876: % Macros used to set up halign preamble:
1877: \let\endsetuptable\relax
1878: \def\xendsetuptable{\endsetuptable}
1879: \let\columnfractions\relax
1880: \def\xcolumnfractions{\columnfractions}
1881: \newif\ifsetpercent
1882:
1883: %% 2/1/96, to allow fractions to be given with more than one digit.
1884: \def\pickupwholefraction#1 {\global\advance\colcount by1 %
1885: \expandafter\xdef\csname col\the\colcount\endcsname{.#1\hsize}%
1886: \setuptable}
1887:
1888: \newcount\colcount
1889: \def\setuptable#1{\def\firstarg{#1}%
1890: \ifx\firstarg\xendsetuptable\let\go\relax%
1891: \else
1892: \ifx\firstarg\xcolumnfractions\global\setpercenttrue%
1893: \else
1894: \ifsetpercent
1895: \let\go\pickupwholefraction % In this case arg of setuptable
1896: % is the decimal point before the
1897: % number given in percent of hsize.
1898: % We don't need this so we don't use it.
1899: \else
1900: \global\advance\colcount by1
1901: \setbox0=\hbox{#1}%
1902: \expandafter\xdef\csname col\the\colcount\endcsname{\the\wd0}%
1903: \fi%
1904: \fi%
1905: \ifx\go\pickupwholefraction\else\let\go\setuptable\fi%
1906: \fi\go}
1907:
1908: %%%%
1909: % multitable syntax
1910: \def\tab{&\hskip1sp\relax} % 2/2/96
1911: % tiny skip here makes sure this column space is
1912: % maintained, even if it is never used.
1913:
1914:
1915: %%%%
1916: % @multitable ... @end multitable definitions:
1917:
1918: \def\multitable{\parsearg\dotable}
1919:
1920: \def\dotable#1{\bgroup
1921: \let\item\cr
1922: \tolerance=9500
1923: \hbadness=9500
1924: \setmultitablespacing
1925: \parskip=\multitableparskip
1926: \parindent=\multitableparindent
1927: \overfullrule=0pt
1928: \global\colcount=0\relax%
1929: \def\Emultitable{\global\setpercentfalse\global\everycr{}\cr\egroup\egroup}%
1930: % To parse everything between @multitable and @item :
1931: \setuptable#1 \endsetuptable
1932: % Need to reset this to 0 after \setuptable.
1933: \global\colcount=0\relax%
1934: %
1935: % This preamble sets up a generic column definition, which will
1936: % be used as many times as user calls for columns.
1937: % \vtop will set a single line and will also let text wrap and
1938: % continue for many paragraphs if desired.
1939: \halign\bgroup&\global\advance\colcount by 1\relax%
1940: \multistrut\vtop{\hsize=\expandafter\csname col\the\colcount\endcsname
1941: % In order to keep entries from bumping into each other
1942: % we will add a \leftskip of \multitablecolspace to all columns after
1943: % the first one.
1944: % If a template has been used, we will add \multitablecolspace
1945: % to the width of each template entry.
1946: % If user has set preamble in terms of percent of \hsize
1947: % we will use that dimension as the width of the column, and
1948: % the \leftskip will keep entries from bumping into each other.
1949: % Table will start at left margin and final column will justify at
1950: % right margin.
1951: \ifnum\colcount=1
1952: \else
1953: \ifsetpercent
1954: \else
1955: % If user has <not> set preamble in terms of percent of \hsize
1956: % we will advance \hsize by \multitablecolspace
1957: \advance\hsize by \multitablecolspace
1958: \fi
1959: % In either case we will make \leftskip=\multitablecolspace:
1960: \leftskip=\multitablecolspace
1961: \fi
1962: \noindent##}\cr%
1963: % \everycr will reset column counter, \colcount, at the end of
1964: % each line. Every column entry will cause \colcount to advance by one.
1965: % The table preamble
1966: % looks at the current \colcount to find the correct column width.
1967: \global\everycr{\noalign{%
1968: \filbreak%% keeps underfull box messages off when table breaks over pages.
1969: \global\colcount=0\relax}}
1970: }
1971:
1972: \def\setmultitablespacing{% test to see if user has set \multitablelinespace.
1973: % If so, do nothing. If not, give it an appropriate dimension based on
1974: % current baselineskip.
1975: \setbox0=\vbox{Xy}
1976: \ifdim\multitablelinespace=0pt
1977: %% strut to put in table in case some entry doesn't have descenders,
1978: %% to keep lines equally spaced
1979: \gdef\multistrut{\vrule height\ht0 depth\dp0 width0pt\relax}
1980: %% Test to see if parskip is larger than space between lines of
1981: %% table. If not, do nothing.
1982: %% If so, set to same dimension as multitablelinespace.
1983: \else
1984: \gdef\multistrut{\vrule height\multitablelinespace depth\dp0
1985: width0pt\relax} \fi
1986: \ifdim\multitableparskip>\multitablelinespace
1987: \global\multitableparskip=\multitablelinespace
1988: \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
1989: %% than skip between lines in the table.
1990: \fi%
1991: \ifdim\multitableparskip=0pt
1992: \global\multitableparskip=\multitablelinespace
1993: \global\advance\multitableparskip-7pt %% to keep parskip somewhat smaller
1994: %% than skip between lines in the table.
1995: \fi}
1996: \message{indexing,}
1997: % Index generation facilities
1998:
1999: % Define \newwrite to be identical to plain tex's \newwrite
2000: % except not \outer, so it can be used within \newindex.
2001: {\catcode`\@=11
2002: \gdef\newwrite{\alloc@7\write\chardef\sixt@@n}}
2003:
2004: % \newindex {foo} defines an index named foo.
2005: % It automatically defines \fooindex such that
2006: % \fooindex ...rest of line... puts an entry in the index foo.
2007: % It also defines \fooindfile to be the number of the output channel for
2008: % the file that accumulates this index. The file's extension is foo.
2009: % The name of an index should be no more than 2 characters long
2010: % for the sake of vms.
2011:
2012: \def\newindex #1{
2013: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
2014: \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
2015: \expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
2016: \noexpand\doindex {#1}}
2017: }
2018:
2019: % @defindex foo == \newindex{foo}
2020:
2021: \def\defindex{\parsearg\newindex}
2022:
2023: % Define @defcodeindex, like @defindex except put all entries in @code.
2024:
2025: \def\newcodeindex #1{
2026: \expandafter\newwrite \csname#1indfile\endcsname% Define number for output file
2027: \openout \csname#1indfile\endcsname \jobname.#1 % Open the file
2028: \expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
2029: \noexpand\docodeindex {#1}}
2030: }
2031:
2032: \def\defcodeindex{\parsearg\newcodeindex}
2033:
2034: % @synindex foo bar makes index foo feed into index bar.
2035: % Do this instead of @defindex foo if you don't want it as a separate index.
2036: \def\synindex #1 #2 {%
2037: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
2038: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
2039: \expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
2040: \noexpand\doindex {#2}}%
2041: }
2042:
2043: % @syncodeindex foo bar similar, but put all entries made for index foo
2044: % inside @code.
2045: \def\syncodeindex #1 #2 {%
2046: \expandafter\let\expandafter\synindexfoo\expandafter=\csname#2indfile\endcsname
2047: \expandafter\let\csname#1indfile\endcsname=\synindexfoo
2048: \expandafter\xdef\csname#1index\endcsname{% % Define \xxxindex
2049: \noexpand\docodeindex {#2}}%
2050: }
2051:
2052: % Define \doindex, the driver for all \fooindex macros.
2053: % Argument #1 is generated by the calling \fooindex macro,
2054: % and it is "foo", the name of the index.
2055:
2056: % \doindex just uses \parsearg; it calls \doind for the actual work.
2057: % This is because \doind is more useful to call from other macros.
2058:
2059: % There is also \dosubind {index}{topic}{subtopic}
2060: % which makes an entry in a two-level index such as the operation index.
2061:
2062: \def\doindex#1{\edef\indexname{#1}\parsearg\singleindexer}
2063: \def\singleindexer #1{\doind{\indexname}{#1}}
2064:
2065: % like the previous two, but they put @code around the argument.
2066: \def\docodeindex#1{\edef\indexname{#1}\parsearg\singlecodeindexer}
2067: \def\singlecodeindexer #1{\doind{\indexname}{\code{#1}}}
2068:
2069: \def\indexdummies{%
2070: % Take care of the plain tex accent commands.
2071: \def\"{\realbackslash "}%
2072: \def\`{\realbackslash `}%
2073: \def\'{\realbackslash '}%
2074: \def\^{\realbackslash ^}%
2075: \def\~{\realbackslash ~}%
2076: \def\={\realbackslash =}%
2077: \def\b{\realbackslash b}%
2078: \def\c{\realbackslash c}%
2079: \def\d{\realbackslash d}%
2080: \def\u{\realbackslash u}%
2081: \def\v{\realbackslash v}%
2082: \def\H{\realbackslash H}%
2083: % Take care of the plain tex special European modified letters.
2084: \def\oe{\realbackslash oe}%
2085: \def\ae{\realbackslash ae}%
2086: \def\aa{\realbackslash aa}%
2087: \def\OE{\realbackslash OE}%
2088: \def\AE{\realbackslash AE}%
2089: \def\AA{\realbackslash AA}%
2090: \def\o{\realbackslash o}%
2091: \def\O{\realbackslash O}%
2092: \def\l{\realbackslash l}%
2093: \def\L{\realbackslash L}%
2094: \def\ss{\realbackslash ss}%
2095: % Take care of texinfo commands likely to appear in an index entry.
2096: \def\_{{\realbackslash _}}%
2097: \def\w{\realbackslash w }%
2098: \def\bf{\realbackslash bf }%
2099: \def\rm{\realbackslash rm }%
2100: \def\sl{\realbackslash sl }%
2101: \def\sf{\realbackslash sf}%
2102: \def\tt{\realbackslash tt}%
2103: \def\gtr{\realbackslash gtr}%
2104: \def\less{\realbackslash less}%
2105: \def\hat{\realbackslash hat}%
2106: \def\char{\realbackslash char}%
2107: \def\TeX{\realbackslash TeX}%
2108: \def\dots{\realbackslash dots }%
2109: \def\copyright{\realbackslash copyright }%
2110: \def\tclose##1{\realbackslash tclose {##1}}%
2111: \def\code##1{\realbackslash code {##1}}%
2112: \def\samp##1{\realbackslash samp {##1}}%
2113: \def\t##1{\realbackslash r {##1}}%
2114: \def\r##1{\realbackslash r {##1}}%
2115: \def\i##1{\realbackslash i {##1}}%
2116: \def\b##1{\realbackslash b {##1}}%
2117: \def\cite##1{\realbackslash cite {##1}}%
2118: \def\key##1{\realbackslash key {##1}}%
2119: \def\file##1{\realbackslash file {##1}}%
2120: \def\var##1{\realbackslash var {##1}}%
2121: \def\kbd##1{\realbackslash kbd {##1}}%
2122: \def\dfn##1{\realbackslash dfn {##1}}%
2123: \def\emph##1{\realbackslash emph {##1}}%
2124: \unsepspaces
2125: }
2126:
2127: % If an index command is used in an @example environment, any spaces
2128: % therein should become regular spaces in the raw index file, not the
2129: % expansion of \tie (\\leavevmode \penalty \@M \ ).
2130: {\obeyspaces
2131: \gdef\unsepspaces{\obeyspaces\let =\space}}
2132:
2133: % \indexnofonts no-ops all font-change commands.
2134: % This is used when outputting the strings to sort the index by.
2135: \def\indexdummyfont#1{#1}
2136: \def\indexdummytex{TeX}
2137: \def\indexdummydots{...}
2138:
2139: \def\indexnofonts{%
2140: % Just ignore accents.
2141: \let\"=\indexdummyfont
2142: \let\`=\indexdummyfont
2143: \let\'=\indexdummyfont
2144: \let\^=\indexdummyfont
2145: \let\~=\indexdummyfont
2146: \let\==\indexdummyfont
2147: \let\b=\indexdummyfont
2148: \let\c=\indexdummyfont
2149: \let\d=\indexdummyfont
2150: \let\u=\indexdummyfont
2151: \let\v=\indexdummyfont
2152: \let\H=\indexdummyfont
2153: % Take care of the plain tex special European modified letters.
2154: \def\oe{oe}%
2155: \def\ae{ae}%
2156: \def\aa{aa}%
2157: \def\OE{OE}%
2158: \def\AE{AE}%
2159: \def\AA{AA}%
2160: \def\o{o}%
2161: \def\O{O}%
2162: \def\l{l}%
2163: \def\L{L}%
2164: \def\ss{ss}%
2165: \let\w=\indexdummyfont
2166: \let\t=\indexdummyfont
2167: \let\r=\indexdummyfont
2168: \let\i=\indexdummyfont
2169: \let\b=\indexdummyfont
2170: \let\emph=\indexdummyfont
2171: \let\strong=\indexdummyfont
2172: \let\cite=\indexdummyfont
2173: \let\sc=\indexdummyfont
2174: %Don't no-op \tt, since it isn't a user-level command
2175: % and is used in the definitions of the active chars like <, >, |...
2176: %\let\tt=\indexdummyfont
2177: \let\tclose=\indexdummyfont
2178: \let\code=\indexdummyfont
2179: \let\file=\indexdummyfont
2180: \let\samp=\indexdummyfont
2181: \let\kbd=\indexdummyfont
2182: \let\key=\indexdummyfont
2183: \let\var=\indexdummyfont
2184: \let\TeX=\indexdummytex
2185: \let\dots=\indexdummydots
2186: }
2187:
2188: % To define \realbackslash, we must make \ not be an escape.
2189: % We must first make another character (@) an escape
2190: % so we do not become unable to do a definition.
2191:
2192: {\catcode`\@=0 \catcode`\\=\other
2193: @gdef@realbackslash{\}}
2194:
2195: \let\indexbackslash=0 %overridden during \printindex.
2196:
2197: \let\SETmarginindex=\relax %initialize!
2198: % workhorse for all \fooindexes
2199: % #1 is name of index, #2 is stuff to put there
2200: \def\doind #1#2{%
2201: % Put the index entry in the margin if desired.
2202: \ifx\SETmarginindex\relax\else%
2203: \insert\margin{\hbox{\vrule height8pt depth3pt width0pt #2}}%
2204: \fi%
2205: {\count10=\lastpenalty %
2206: {\indexdummies % Must do this here, since \bf, etc expand at this stage
2207: \escapechar=`\\%
2208: {\let\folio=0% Expand all macros now EXCEPT \folio
2209: \def\rawbackslashxx{\indexbackslash}% \indexbackslash isn't defined now
2210: % so it will be output as is; and it will print as backslash in the indx.
2211: %
2212: % Now process the index-string once, with all font commands turned off,
2213: % to get the string to sort the index by.
2214: {\indexnofonts
2215: \xdef\temp1{#2}%
2216: }%
2217: % Now produce the complete index entry. We process the index-string again,
2218: % this time with font commands expanded, to get what to print in the index.
2219: \edef\temp{%
2220: \write \csname#1indfile\endcsname{%
2221: \realbackslash entry {\temp1}{\folio}{#2}}}%
2222: \temp }%
2223: }\penalty\count10}}
2224:
2225: \def\dosubind #1#2#3{%
2226: {\count10=\lastpenalty %
2227: {\indexdummies % Must do this here, since \bf, etc expand at this stage
2228: \escapechar=`\\%
2229: {\let\folio=0%
2230: \def\rawbackslashxx{\indexbackslash}%
2231: %
2232: % Now process the index-string once, with all font commands turned off,
2233: % to get the string to sort the index by.
2234: {\indexnofonts
2235: \xdef\temp1{#2 #3}%
2236: }%
2237: % Now produce the complete index entry. We process the index-string again,
2238: % this time with font commands expanded, to get what to print in the index.
2239: \edef\temp{%
2240: \write \csname#1indfile\endcsname{%
2241: \realbackslash entry {\temp1}{\folio}{#2}{#3}}}%
2242: \temp }%
2243: }\penalty\count10}}
2244:
2245: % The index entry written in the file actually looks like
2246: % \entry {sortstring}{page}{topic}
2247: % or
2248: % \entry {sortstring}{page}{topic}{subtopic}
2249: % The texindex program reads in these files and writes files
2250: % containing these kinds of lines:
2251: % \initial {c}
2252: % before the first topic whose initial is c
2253: % \entry {topic}{pagelist}
2254: % for a topic that is used without subtopics
2255: % \primary {topic}
2256: % for the beginning of a topic that is used with subtopics
2257: % \secondary {subtopic}{pagelist}
2258: % for each subtopic.
2259:
2260: % Define the user-accessible indexing commands
2261: % @findex, @vindex, @kindex, @cindex.
2262:
2263: \def\findex {\fnindex}
2264: \def\kindex {\kyindex}
2265: \def\cindex {\cpindex}
2266: \def\vindex {\vrindex}
2267: \def\tindex {\tpindex}
2268: \def\pindex {\pgindex}
2269:
2270: \def\cindexsub {\begingroup\obeylines\cindexsub}
2271: {\obeylines %
2272: \gdef\cindexsub "#1" #2^^M{\endgroup %
2273: \dosubind{cp}{#2}{#1}}}
2274:
2275: % Define the macros used in formatting output of the sorted index material.
2276:
2277: % This is what you call to cause a particular index to get printed.
2278: % Write
2279: % @unnumbered Function Index
2280: % @printindex fn
2281:
2282: \def\printindex{\parsearg\doprintindex}
2283:
2284: \def\doprintindex#1{%
2285: \tex
2286: \dobreak \chapheadingskip {10000}
2287: \catcode`\%=\other\catcode`\&=\other\catcode`\#=\other
2288: \catcode`\$=\other
2289: \catcode`\~=\other
2290: \indexbreaks
2291: %
2292: % The following don't help, since the chars were translated
2293: % when the raw index was written, and their fonts were discarded
2294: % due to \indexnofonts.
2295: %\catcode`\"=\active
2296: %\catcode`\^=\active
2297: %\catcode`\_=\active
2298: %\catcode`\|=\active
2299: %\catcode`\<=\active
2300: %\catcode`\>=\active
2301: % %
2302: \def\indexbackslash{\rawbackslashxx}
2303: \indexfonts\rm \tolerance=9500 \advance\baselineskip -1pt
2304: \begindoublecolumns
2305: %
2306: % See if the index file exists and is nonempty.
2307: \openin 1 \jobname.#1s
2308: \ifeof 1
2309: % \enddoublecolumns gets confused if there is no text in the index,
2310: % and it loses the chapter title and the aux file entries for the
2311: % index. The easiest way to prevent this problem is to make sure
2312: % there is some text.
2313: (Index is nonexistent)
2314: \else
2315: %
2316: % If the index file exists but is empty, then \openin leaves \ifeof
2317: % false. We have to make TeX try to read something from the file, so
2318: % it can discover if there is anything in it.
2319: \read 1 to \temp
2320: \ifeof 1
2321: (Index is empty)
2322: \else
2323: \input \jobname.#1s
2324: \fi
2325: \fi
2326: \closein 1
2327: \enddoublecolumns
2328: \Etex
2329: }
2330:
2331: % These macros are used by the sorted index file itself.
2332: % Change them to control the appearance of the index.
2333:
2334: % Same as \bigskipamount except no shrink.
2335: % \balancecolumns gets confused if there is any shrink.
2336: \newskip\initialskipamount \initialskipamount 12pt plus4pt
2337:
2338: \def\initial #1{%
2339: {\let\tentt=\sectt \let\tt=\sectt \let\sf=\sectt
2340: \ifdim\lastskip<\initialskipamount
2341: \removelastskip \penalty-200 \vskip \initialskipamount\fi
2342: \line{\secbf#1\hfill}\kern 2pt\penalty10000}}
2343:
2344: % This typesets a paragraph consisting of #1, dot leaders, and then #2
2345: % flush to the right margin. It is used for index and table of contents
2346: % entries. The paragraph is indented by \leftskip.
2347: %
2348: \def\entry #1#2{\begingroup
2349: %
2350: % Start a new paragraph if necessary, so our assignments below can't
2351: % affect previous text.
2352: \par
2353: %
2354: % Do not fill out the last line with white space.
2355: \parfillskip = 0in
2356: %
2357: % No extra space above this paragraph.
2358: \parskip = 0in
2359: %
2360: % Do not prefer a separate line ending with a hyphen to fewer lines.
2361: \finalhyphendemerits = 0
2362: %
2363: % \hangindent is only relevant when the entry text and page number
2364: % don't both fit on one line. In that case, bob suggests starting the
2365: % dots pretty far over on the line. Unfortunately, a large
2366: % indentation looks wrong when the entry text itself is broken across
2367: % lines. So we use a small indentation and put up with long leaders.
2368: %
2369: % \hangafter is reset to 1 (which is the value we want) at the start
2370: % of each paragraph, so we need not do anything with that.
2371: \hangindent=2em
2372: %
2373: % When the entry text needs to be broken, just fill out the first line
2374: % with blank space.
2375: \rightskip = 0pt plus1fil
2376: %
2377: % Start a ``paragraph'' for the index entry so the line breaking
2378: % parameters we've set above will have an effect.
2379: \noindent
2380: %
2381: % Insert the text of the index entry. TeX will do line-breaking on it.
2382: #1%
2383: % The following is kludged to not output a line of dots in the index if
2384: % there are no page numbers. The next person who breaks this will be
2385: % cursed by a Unix daemon.
2386: \def\tempa{{\rm }}%
2387: \def\tempb{#2}%
2388: \edef\tempc{\tempa}%
2389: \edef\tempd{\tempb}%
2390: \ifx\tempc\tempd\ \else%
2391: %
2392: % If we must, put the page number on a line of its own, and fill out
2393: % this line with blank space. (The \hfil is overwhelmed with the
2394: % fill leaders glue in \indexdotfill if the page number does fit.)
2395: \hfil\penalty50
2396: \null\nobreak\indexdotfill % Have leaders before the page number.
2397: %
2398: % The `\ ' here is removed by the implicit \unskip that TeX does as
2399: % part of (the primitive) \par. Without it, a spurious underfull
2400: % \hbox ensues.
2401: \ #2% The page number ends the paragraph.
2402: \fi%
2403: \par
2404: \endgroup}
2405:
2406: % Like \dotfill except takes at least 1 em.
2407: \def\indexdotfill{\cleaders
2408: \hbox{$\mathsurround=0pt \mkern1.5mu ${\it .}$ \mkern1.5mu$}\hskip 1em plus 1fill}
2409:
2410: \def\primary #1{\line{#1\hfil}}
2411:
2412: \newskip\secondaryindent \secondaryindent=0.5cm
2413:
2414: \def\secondary #1#2{
2415: {\parfillskip=0in \parskip=0in
2416: \hangindent =1in \hangafter=1
2417: \noindent\hskip\secondaryindent\hbox{#1}\indexdotfill #2\par
2418: }}
2419:
2420: %% Define two-column mode, which is used in indexes.
2421: %% Adapted from the TeXbook, page 416.
2422: \catcode `\@=11
2423:
2424: \newbox\partialpage
2425:
2426: \newdimen\doublecolumnhsize
2427:
2428: \def\begindoublecolumns{\begingroup
2429: % Grab any single-column material above us.
2430: \output = {\global\setbox\partialpage
2431: =\vbox{\unvbox255\kern -\topskip \kern \baselineskip}}%
2432: \eject
2433: %
2434: % Now switch to the double-column output routine.
2435: \output={\doublecolumnout}%
2436: %
2437: % Change the page size parameters. We could do this once outside this
2438: % routine, in each of @smallbook, @afourpaper, and the default 8.5x11
2439: % format, but then we repeat the same computation. Repeating a couple
2440: % of assignments once per index is clearly meaningless for the
2441: % execution time, so we may as well do it once.
2442: %
2443: % First we halve the line length, less a little for the gutter between
2444: % the columns. We compute the gutter based on the line length, so it
2445: % changes automatically with the paper format. The magic constant
2446: % below is chosen so that the gutter has the same value (well, +- <
2447: % 1pt) as it did when we hard-coded it.
2448: %
2449: % We put the result in a separate register, \doublecolumhsize, so we
2450: % can restore it in \pagesofar, after \hsize itself has (potentially)
2451: % been clobbered.
2452: %
2453: \doublecolumnhsize = \hsize
2454: \advance\doublecolumnhsize by -.04154\hsize
2455: \divide\doublecolumnhsize by 2
2456: \hsize = \doublecolumnhsize
2457: %
2458: % Double the \vsize as well. (We don't need a separate register here,
2459: % since nobody clobbers \vsize.)
2460: \vsize = 2\vsize
2461: \doublecolumnpagegoal
2462: }
2463:
2464: \def\enddoublecolumns{\eject \endgroup \pagegoal=\vsize \unvbox\partialpage}
2465:
2466: \def\doublecolumnsplit{\splittopskip=\topskip \splitmaxdepth=\maxdepth
2467: \global\dimen@=\pageheight \global\advance\dimen@ by-\ht\partialpage
2468: \global\setbox1=\vsplit255 to\dimen@ \global\setbox0=\vbox{\unvbox1}
2469: \global\setbox3=\vsplit255 to\dimen@ \global\setbox2=\vbox{\unvbox3}
2470: \ifdim\ht0>\dimen@ \setbox255=\vbox{\unvbox0\unvbox2} \global\setbox255=\copy5 \fi
2471: \ifdim\ht2>\dimen@ \setbox255=\vbox{\unvbox0\unvbox2} \global\setbox255=\copy5 \fi
2472: }
2473: \def\doublecolumnpagegoal{%
2474: \dimen@=\vsize \advance\dimen@ by-2\ht\partialpage \global\pagegoal=\dimen@
2475: }
2476: \def\pagesofar{\unvbox\partialpage %
2477: \hsize=\doublecolumnhsize % have to restore this since output routine
2478: \wd0=\hsize \wd2=\hsize \hbox to\pagewidth{\box0\hfil\box2}}
2479: \def\doublecolumnout{%
2480: \setbox5=\copy255
2481: {\vbadness=10000 \doublecolumnsplit}
2482: \ifvbox255
2483: \setbox0=\vtop to\dimen@{\unvbox0}
2484: \setbox2=\vtop to\dimen@{\unvbox2}
2485: \onepageout\pagesofar \unvbox255 \penalty\outputpenalty
2486: \else
2487: \setbox0=\vbox{\unvbox5}
2488: \ifvbox0
2489: \dimen@=\ht0 \advance\dimen@ by\topskip \advance\dimen@ by-\baselineskip
2490: \divide\dimen@ by2 \splittopskip=\topskip \splitmaxdepth=\maxdepth
2491: {\vbadness=10000
2492: \loop \global\setbox5=\copy0
2493: \setbox1=\vsplit5 to\dimen@
2494: \setbox3=\vsplit5 to\dimen@
2495: \ifvbox5 \global\advance\dimen@ by1pt \repeat
2496: \setbox0=\vbox to\dimen@{\unvbox1}
2497: \setbox2=\vbox to\dimen@{\unvbox3}
2498: \global\setbox\partialpage=\vbox{\pagesofar}
2499: \doublecolumnpagegoal
2500: }
2501: \fi
2502: \fi
2503: }
2504:
2505: \catcode `\@=\other
2506: \message{sectioning,}
2507: % Define chapters, sections, etc.
2508:
2509: \newcount \chapno
2510: \newcount \secno \secno=0
2511: \newcount \subsecno \subsecno=0
2512: \newcount \subsubsecno \subsubsecno=0
2513:
2514: % This counter is funny since it counts through charcodes of letters A, B, ...
2515: \newcount \appendixno \appendixno = `\@
2516: \def\appendixletter{\char\the\appendixno}
2517:
2518: \newwrite \contentsfile
2519: % This is called from \setfilename.
2520: \def\opencontents{\openout \contentsfile = \jobname.toc}
2521:
2522: % Each @chapter defines this as the name of the chapter.
2523: % page headings and footings can use it. @section does likewise
2524:
2525: \def\thischapter{} \def\thissection{}
2526: \def\seccheck#1{\if \pageno<0 %
2527: \errmessage{@#1 not allowed after generating table of contents}\fi
2528: %
2529: }
2530:
2531: \def\chapternofonts{%
2532: \let\rawbackslash=\relax%
2533: \let\frenchspacing=\relax%
2534: \def\result{\realbackslash result}
2535: \def\equiv{\realbackslash equiv}
2536: \def\expansion{\realbackslash expansion}
2537: \def\print{\realbackslash print}
2538: \def\TeX{\realbackslash TeX}
2539: \def\dots{\realbackslash dots}
2540: \def\copyright{\realbackslash copyright}
2541: \def\tt{\realbackslash tt}
2542: \def\bf{\realbackslash bf }
2543: \def\w{\realbackslash w}
2544: \def\less{\realbackslash less}
2545: \def\gtr{\realbackslash gtr}
2546: \def\hat{\realbackslash hat}
2547: \def\char{\realbackslash char}
2548: \def\tclose##1{\realbackslash tclose {##1}}
2549: \def\code##1{\realbackslash code {##1}}
2550: \def\samp##1{\realbackslash samp {##1}}
2551: \def\r##1{\realbackslash r {##1}}
2552: \def\b##1{\realbackslash b {##1}}
2553: \def\key##1{\realbackslash key {##1}}
2554: \def\file##1{\realbackslash file {##1}}
2555: \def\kbd##1{\realbackslash kbd {##1}}
2556: % These are redefined because @smartitalic wouldn't work inside xdef.
2557: \def\i##1{\realbackslash i {##1}}
2558: \def\cite##1{\realbackslash cite {##1}}
2559: \def\var##1{\realbackslash var {##1}}
2560: \def\emph##1{\realbackslash emph {##1}}
2561: \def\dfn##1{\realbackslash dfn {##1}}
2562: }
2563:
2564: \newcount\absseclevel % used to calculate proper heading level
2565: \newcount\secbase\secbase=0 % @raise/lowersections modify this count
2566:
2567: % @raisesections: treat @section as chapter, @subsection as section, etc.
2568: \def\raisesections{\global\advance\secbase by -1}
2569: \let\up=\raisesections % original BFox name
2570:
2571: % @lowersections: treat @chapter as section, @section as subsection, etc.
2572: \def\lowersections{\global\advance\secbase by 1}
2573: \let\down=\lowersections % original BFox name
2574:
2575: % Choose a numbered-heading macro
2576: % #1 is heading level if unmodified by @raisesections or @lowersections
2577: % #2 is text for heading
2578: \def\numhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
2579: \ifcase\absseclevel
2580: \chapterzzz{#2}
2581: \or
2582: \seczzz{#2}
2583: \or
2584: \numberedsubseczzz{#2}
2585: \or
2586: \numberedsubsubseczzz{#2}
2587: \else
2588: \ifnum \absseclevel<0
2589: \chapterzzz{#2}
2590: \else
2591: \numberedsubsubseczzz{#2}
2592: \fi
2593: \fi
2594: }
2595:
2596: % like \numhead, but chooses appendix heading levels
2597: \def\apphead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
2598: \ifcase\absseclevel
2599: \appendixzzz{#2}
2600: \or
2601: \appendixsectionzzz{#2}
2602: \or
2603: \appendixsubseczzz{#2}
2604: \or
2605: \appendixsubsubseczzz{#2}
2606: \else
2607: \ifnum \absseclevel<0
2608: \appendixzzz{#2}
2609: \else
2610: \appendixsubsubseczzz{#2}
2611: \fi
2612: \fi
2613: }
2614:
2615: % like \numhead, but chooses numberless heading levels
2616: \def\unnmhead#1#2{\absseclevel=\secbase\advance\absseclevel by #1
2617: \ifcase\absseclevel
2618: \unnumberedzzz{#2}
2619: \or
2620: \unnumberedseczzz{#2}
2621: \or
2622: \unnumberedsubseczzz{#2}
2623: \or
2624: \unnumberedsubsubseczzz{#2}
2625: \else
2626: \ifnum \absseclevel<0
2627: \unnumberedzzz{#2}
2628: \else
2629: \unnumberedsubsubseczzz{#2}
2630: \fi
2631: \fi
2632: }
2633:
2634:
2635: \def\thischaptername{No Chapter Title}
2636: \outer\def\chapter{\parsearg\chapteryyy}
2637: \def\chapteryyy #1{\numhead0{#1}} % normally numhead0 calls chapterzzz
2638: \def\chapterzzz #1{\seccheck{chapter}%
2639: \secno=0 \subsecno=0 \subsubsecno=0
2640: \global\advance \chapno by 1 \message{\putwordChapter \the\chapno}%
2641: \chapmacro {#1}{\the\chapno}%
2642: \gdef\thissection{#1}%
2643: \gdef\thischaptername{#1}%
2644: % We don't substitute the actual chapter name into \thischapter
2645: % because we don't want its macros evaluated now.
2646: \xdef\thischapter{\putwordChapter{} \the\chapno: \noexpand\thischaptername}%
2647: {\chapternofonts%
2648: \edef\temp{{\realbackslash chapentry {#1}{\the\chapno}{\noexpand\folio}}}%
2649: \escapechar=`\\%
2650: \write \contentsfile \temp %
2651: \donoderef %
2652: \global\let\section = \numberedsec
2653: \global\let\subsection = \numberedsubsec
2654: \global\let\subsubsection = \numberedsubsubsec
2655: }}
2656:
2657: \outer\def\appendix{\parsearg\appendixyyy}
2658: \def\appendixyyy #1{\apphead0{#1}} % normally apphead0 calls appendixzzz
2659: \def\appendixzzz #1{\seccheck{appendix}%
2660: \secno=0 \subsecno=0 \subsubsecno=0
2661: \global\advance \appendixno by 1 \message{Appendix \appendixletter}%
2662: \chapmacro {#1}{\putwordAppendix{} \appendixletter}%
2663: \gdef\thissection{#1}%
2664: \gdef\thischaptername{#1}%
2665: \xdef\thischapter{\putwordAppendix{} \appendixletter: \noexpand\thischaptername}%
2666: {\chapternofonts%
2667: \edef\temp{{\realbackslash chapentry
2668: {#1}{\putwordAppendix{} \appendixletter}{\noexpand\folio}}}%
2669: \escapechar=`\\%
2670: \write \contentsfile \temp %
2671: \appendixnoderef %
2672: \global\let\section = \appendixsec
2673: \global\let\subsection = \appendixsubsec
2674: \global\let\subsubsection = \appendixsubsubsec
2675: }}
2676:
2677: % @centerchap is like @unnumbered, but the heading is centered.
2678: \outer\def\centerchap{\parsearg\centerchapyyy}
2679: \def\centerchapyyy #1{{\let\unnumbchapmacro=\centerchapmacro \unnumberedyyy{#1}}}
2680:
2681: \outer\def\top{\parsearg\unnumberedyyy}
2682: \outer\def\unnumbered{\parsearg\unnumberedyyy}
2683: \def\unnumberedyyy #1{\unnmhead0{#1}} % normally unnmhead0 calls unnumberedzzz
2684: \def\unnumberedzzz #1{\seccheck{unnumbered}%
2685: \secno=0 \subsecno=0 \subsubsecno=0
2686: %
2687: % This used to be simply \message{#1}, but TeX fully expands the
2688: % argument to \message. Therefore, if #1 contained @-commands, TeX
2689: % expanded them. For example, in `@unnumbered The @cite{Book}', TeX
2690: % expanded @cite (which turns out to cause errors because \cite is meant
2691: % to be executed, not expanded).
2692: %
2693: % Anyway, we don't want the fully-expanded definition of @cite to appear
2694: % as a result of the \message, we just want `@cite' itself. We use
2695: % \the<toks register> to achieve this: TeX expands \the<toks> only once,
2696: % simply yielding the contents of the <toks register>.
2697: \toks0 = {#1}\message{(\the\toks0)}%
2698: %
2699: \unnumbchapmacro {#1}%
2700: \gdef\thischapter{#1}\gdef\thissection{#1}%
2701: {\chapternofonts%
2702: \edef\temp{{\realbackslash unnumbchapentry {#1}{\noexpand\folio}}}%
2703: \escapechar=`\\%
2704: \write \contentsfile \temp %
2705: \unnumbnoderef %
2706: \global\let\section = \unnumberedsec
2707: \global\let\subsection = \unnumberedsubsec
2708: \global\let\subsubsection = \unnumberedsubsubsec
2709: }}
2710:
2711: \outer\def\numberedsec{\parsearg\secyyy}
2712: \def\secyyy #1{\numhead1{#1}} % normally calls seczzz
2713: \def\seczzz #1{\seccheck{section}%
2714: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
2715: \gdef\thissection{#1}\secheading {#1}{\the\chapno}{\the\secno}%
2716: {\chapternofonts%
2717: \edef\temp{{\realbackslash secentry %
2718: {#1}{\the\chapno}{\the\secno}{\noexpand\folio}}}%
2719: \escapechar=`\\%
2720: \write \contentsfile \temp %
2721: \donoderef %
2722: \penalty 10000 %
2723: }}
2724:
2725: \outer\def\appendixsection{\parsearg\appendixsecyyy}
2726: \outer\def\appendixsec{\parsearg\appendixsecyyy}
2727: \def\appendixsecyyy #1{\apphead1{#1}} % normally calls appendixsectionzzz
2728: \def\appendixsectionzzz #1{\seccheck{appendixsection}%
2729: \subsecno=0 \subsubsecno=0 \global\advance \secno by 1 %
2730: \gdef\thissection{#1}\secheading {#1}{\appendixletter}{\the\secno}%
2731: {\chapternofonts%
2732: \edef\temp{{\realbackslash secentry %
2733: {#1}{\appendixletter}{\the\secno}{\noexpand\folio}}}%
2734: \escapechar=`\\%
2735: \write \contentsfile \temp %
2736: \appendixnoderef %
2737: \penalty 10000 %
2738: }}
2739:
2740: \outer\def\unnumberedsec{\parsearg\unnumberedsecyyy}
2741: \def\unnumberedsecyyy #1{\unnmhead1{#1}} % normally calls unnumberedseczzz
2742: \def\unnumberedseczzz #1{\seccheck{unnumberedsec}%
2743: \plainsecheading {#1}\gdef\thissection{#1}%
2744: {\chapternofonts%
2745: \edef\temp{{\realbackslash unnumbsecentry{#1}{\noexpand\folio}}}%
2746: \escapechar=`\\%
2747: \write \contentsfile \temp %
2748: \unnumbnoderef %
2749: \penalty 10000 %
2750: }}
2751:
2752: \outer\def\numberedsubsec{\parsearg\numberedsubsecyyy}
2753: \def\numberedsubsecyyy #1{\numhead2{#1}} % normally calls numberedsubseczzz
2754: \def\numberedsubseczzz #1{\seccheck{subsection}%
2755: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
2756: \subsecheading {#1}{\the\chapno}{\the\secno}{\the\subsecno}%
2757: {\chapternofonts%
2758: \edef\temp{{\realbackslash subsecentry %
2759: {#1}{\the\chapno}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
2760: \escapechar=`\\%
2761: \write \contentsfile \temp %
2762: \donoderef %
2763: \penalty 10000 %
2764: }}
2765:
2766: \outer\def\appendixsubsec{\parsearg\appendixsubsecyyy}
2767: \def\appendixsubsecyyy #1{\apphead2{#1}} % normally calls appendixsubseczzz
2768: \def\appendixsubseczzz #1{\seccheck{appendixsubsec}%
2769: \gdef\thissection{#1}\subsubsecno=0 \global\advance \subsecno by 1 %
2770: \subsecheading {#1}{\appendixletter}{\the\secno}{\the\subsecno}%
2771: {\chapternofonts%
2772: \edef\temp{{\realbackslash subsecentry %
2773: {#1}{\appendixletter}{\the\secno}{\the\subsecno}{\noexpand\folio}}}%
2774: \escapechar=`\\%
2775: \write \contentsfile \temp %
2776: \appendixnoderef %
2777: \penalty 10000 %
2778: }}
2779:
2780: \outer\def\unnumberedsubsec{\parsearg\unnumberedsubsecyyy}
2781: \def\unnumberedsubsecyyy #1{\unnmhead2{#1}} %normally calls unnumberedsubseczzz
2782: \def\unnumberedsubseczzz #1{\seccheck{unnumberedsubsec}%
2783: \plainsecheading {#1}\gdef\thissection{#1}%
2784: {\chapternofonts%
2785: \edef\temp{{\realbackslash unnumbsubsecentry{#1}{\noexpand\folio}}}%
2786: \escapechar=`\\%
2787: \write \contentsfile \temp %
2788: \unnumbnoderef %
2789: \penalty 10000 %
2790: }}
2791:
2792: \outer\def\numberedsubsubsec{\parsearg\numberedsubsubsecyyy}
2793: \def\numberedsubsubsecyyy #1{\numhead3{#1}} % normally numberedsubsubseczzz
2794: \def\numberedsubsubseczzz #1{\seccheck{subsubsection}%
2795: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
2796: \subsubsecheading {#1}
2797: {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
2798: {\chapternofonts%
2799: \edef\temp{{\realbackslash subsubsecentry %
2800: {#1}
2801: {\the\chapno}{\the\secno}{\the\subsecno}{\the\subsubsecno}
2802: {\noexpand\folio}}}%
2803: \escapechar=`\\%
2804: \write \contentsfile \temp %
2805: \donoderef %
2806: \penalty 10000 %
2807: }}
2808:
2809: \outer\def\appendixsubsubsec{\parsearg\appendixsubsubsecyyy}
2810: \def\appendixsubsubsecyyy #1{\apphead3{#1}} % normally appendixsubsubseczzz
2811: \def\appendixsubsubseczzz #1{\seccheck{appendixsubsubsec}%
2812: \gdef\thissection{#1}\global\advance \subsubsecno by 1 %
2813: \subsubsecheading {#1}
2814: {\appendixletter}{\the\secno}{\the\subsecno}{\the\subsubsecno}%
2815: {\chapternofonts%
2816: \edef\temp{{\realbackslash subsubsecentry{#1}%
2817: {\appendixletter}
2818: {\the\secno}{\the\subsecno}{\the\subsubsecno}{\noexpand\folio}}}%
2819: \escapechar=`\\%
2820: \write \contentsfile \temp %
2821: \appendixnoderef %
2822: \penalty 10000 %
2823: }}
2824:
2825: \outer\def\unnumberedsubsubsec{\parsearg\unnumberedsubsubsecyyy}
2826: \def\unnumberedsubsubsecyyy #1{\unnmhead3{#1}} %normally unnumberedsubsubseczzz
2827: \def\unnumberedsubsubseczzz #1{\seccheck{unnumberedsubsubsec}%
2828: \plainsecheading {#1}\gdef\thissection{#1}%
2829: {\chapternofonts%
2830: \edef\temp{{\realbackslash unnumbsubsubsecentry{#1}{\noexpand\folio}}}%
2831: \escapechar=`\\%
2832: \write \contentsfile \temp %
2833: \unnumbnoderef %
2834: \penalty 10000 %
2835: }}
2836:
2837: % These are variants which are not "outer", so they can appear in @ifinfo.
2838: % Actually, they should now be obsolete; ordinary section commands should work.
2839: \def\infotop{\parsearg\unnumberedzzz}
2840: \def\infounnumbered{\parsearg\unnumberedzzz}
2841: \def\infounnumberedsec{\parsearg\unnumberedseczzz}
2842: \def\infounnumberedsubsec{\parsearg\unnumberedsubseczzz}
2843: \def\infounnumberedsubsubsec{\parsearg\unnumberedsubsubseczzz}
2844:
2845: \def\infoappendix{\parsearg\appendixzzz}
2846: \def\infoappendixsec{\parsearg\appendixseczzz}
2847: \def\infoappendixsubsec{\parsearg\appendixsubseczzz}
2848: \def\infoappendixsubsubsec{\parsearg\appendixsubsubseczzz}
2849:
2850: \def\infochapter{\parsearg\chapterzzz}
2851: \def\infosection{\parsearg\sectionzzz}
2852: \def\infosubsection{\parsearg\subsectionzzz}
2853: \def\infosubsubsection{\parsearg\subsubsectionzzz}
2854:
2855: % These macros control what the section commands do, according
2856: % to what kind of chapter we are in (ordinary, appendix, or unnumbered).
2857: % Define them by default for a numbered chapter.
2858: \global\let\section = \numberedsec
2859: \global\let\subsection = \numberedsubsec
2860: \global\let\subsubsection = \numberedsubsubsec
2861:
2862: % Define @majorheading, @heading and @subheading
2863:
2864: % NOTE on use of \vbox for chapter headings, section headings, and
2865: % such:
2866: % 1) We use \vbox rather than the earlier \line to permit
2867: % overlong headings to fold.
2868: % 2) \hyphenpenalty is set to 10000 because hyphenation in a
2869: % heading is obnoxious; this forbids it.
2870: % 3) Likewise, headings look best if no \parindent is used, and
2871: % if justification is not attempted. Hence \raggedright.
2872:
2873:
2874: \def\majorheading{\parsearg\majorheadingzzz}
2875: \def\majorheadingzzz #1{%
2876: {\advance\chapheadingskip by 10pt \chapbreak }%
2877: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2878: \parindent=0pt\raggedright
2879: \rm #1\hfill}}\bigskip \par\penalty 200}
2880:
2881: \def\chapheading{\parsearg\chapheadingzzz}
2882: \def\chapheadingzzz #1{\chapbreak %
2883: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2884: \parindent=0pt\raggedright
2885: \rm #1\hfill}}\bigskip \par\penalty 200}
2886:
2887: \def\heading{\parsearg\secheadingi}
2888:
2889: \def\subheading{\parsearg\subsecheadingi}
2890:
2891: \def\subsubheading{\parsearg\subsubsecheadingi}
2892:
2893: % These macros generate a chapter, section, etc. heading only
2894: % (including whitespace, linebreaking, etc. around it),
2895: % given all the information in convenient, parsed form.
2896:
2897: %%% Args are the skip and penalty (usually negative)
2898: \def\dobreak#1#2{\par\ifdim\lastskip<#1\removelastskip\penalty#2\vskip#1\fi}
2899:
2900: \def\setchapterstyle #1 {\csname CHAPF#1\endcsname}
2901:
2902: %%% Define plain chapter starts, and page on/off switching for it
2903: % Parameter controlling skip before chapter headings (if needed)
2904:
2905: \newskip \chapheadingskip \chapheadingskip = 30pt plus 8pt minus 4pt
2906:
2907: \def\chapbreak{\dobreak \chapheadingskip {-4000}}
2908: \def\chappager{\par\vfill\supereject}
2909: \def\chapoddpage{\chappager \ifodd\pageno \else \hbox to 0pt{} \chappager\fi}
2910:
2911: \def\setchapternewpage #1 {\csname CHAPPAG#1\endcsname}
2912:
2913: \def\CHAPPAGoff{
2914: \global\let\pchapsepmacro=\chapbreak
2915: \global\let\pagealignmacro=\chappager}
2916:
2917: \def\CHAPPAGon{
2918: \global\let\pchapsepmacro=\chappager
2919: \global\let\pagealignmacro=\chappager
2920: \global\def\HEADINGSon{\HEADINGSsingle}}
2921:
2922: \def\CHAPPAGodd{
2923: \global\let\pchapsepmacro=\chapoddpage
2924: \global\let\pagealignmacro=\chapoddpage
2925: \global\def\HEADINGSon{\HEADINGSdouble}}
2926:
2927: \CHAPPAGon
2928:
2929: \def\CHAPFplain{
2930: \global\let\chapmacro=\chfplain
2931: \global\let\unnumbchapmacro=\unnchfplain
2932: \global\let\centerchapmacro=\centerchfplain}
2933:
2934: \def\chfplain #1#2{%
2935: \pchapsepmacro
2936: {%
2937: \chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2938: \parindent=0pt\raggedright
2939: \rm #2\enspace #1}%
2940: }%
2941: \bigskip
2942: \penalty5000
2943: }
2944:
2945: \def\unnchfplain #1{%
2946: \pchapsepmacro %
2947: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2948: \parindent=0pt\raggedright
2949: \rm #1\hfill}}\bigskip \par\penalty 10000 %
2950: }
2951:
2952: \def\centerchfplain #1{%
2953: \pchapsepmacro %
2954: {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2955: \parindent=0pt
2956: {\rm #1}\hfill}}\bigskip \par\penalty 10000 %
2957: }
2958:
2959: \CHAPFplain % The default
2960:
2961: \def\unnchfopen #1{%
2962: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2963: \parindent=0pt\raggedright
2964: \rm #1\hfill}}\bigskip \par\penalty 10000 %
2965: }
2966:
2967: \def\chfopen #1#2{\chapoddpage {\chapfonts
2968: \vbox to 3in{\vfil \hbox to\hsize{\hfil #2} \hbox to\hsize{\hfil #1} \vfil}}%
2969: \par\penalty 5000 %
2970: }
2971:
2972: \def\centerchfopen #1{%
2973: \chapoddpage {\chapfonts \vbox{\hyphenpenalty=10000\tolerance=5000
2974: \parindent=0pt
2975: \hfill {\rm #1}\hfill}}\bigskip \par\penalty 10000 %
2976: }
2977:
2978: \def\CHAPFopen{
2979: \global\let\chapmacro=\chfopen
2980: \global\let\unnumbchapmacro=\unnchfopen
2981: \global\let\centerchapmacro=\centerchfopen}
2982:
2983: % Parameter controlling skip before section headings.
2984:
2985: \newskip \subsecheadingskip \subsecheadingskip = 17pt plus 8pt minus 4pt
2986: \def\subsecheadingbreak{\dobreak \subsecheadingskip {-500}}
2987:
2988: \newskip \secheadingskip \secheadingskip = 21pt plus 8pt minus 4pt
2989: \def\secheadingbreak{\dobreak \secheadingskip {-1000}}
2990:
2991: % @paragraphindent is defined for the Info formatting commands only.
2992: \let\paragraphindent=\comment
2993:
2994: % Section fonts are the base font at magstep2, which produces
2995: % a size a bit more than 14 points in the default situation.
2996:
2997: \def\secheading #1#2#3{\secheadingi {#2.#3\enspace #1}}
2998: \def\plainsecheading #1{\secheadingi {#1}}
2999: \def\secheadingi #1{{\advance \secheadingskip by \parskip %
3000: \secheadingbreak}%
3001: {\secfonts \vbox{\hyphenpenalty=10000\tolerance=5000
3002: \parindent=0pt\raggedright
3003: \rm #1\hfill}}%
3004: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
3005:
3006:
3007: % Subsection fonts are the base font at magstep1,
3008: % which produces a size of 12 points.
3009:
3010: \def\subsecheading #1#2#3#4{\subsecheadingi {#2.#3.#4\enspace #1}}
3011: \def\subsecheadingi #1{{\advance \subsecheadingskip by \parskip %
3012: \subsecheadingbreak}%
3013: {\subsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
3014: \parindent=0pt\raggedright
3015: \rm #1\hfill}}%
3016: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000 }
3017:
3018: \def\subsubsecfonts{\subsecfonts} % Maybe this should change:
3019: % Perhaps make sssec fonts scaled
3020: % magstep half
3021: \def\subsubsecheading #1#2#3#4#5{\subsubsecheadingi {#2.#3.#4.#5\enspace #1}}
3022: \def\subsubsecheadingi #1{{\advance \subsecheadingskip by \parskip %
3023: \subsecheadingbreak}%
3024: {\subsubsecfonts \vbox{\hyphenpenalty=10000\tolerance=5000
3025: \parindent=0pt\raggedright
3026: \rm #1\hfill}}%
3027: \ifdim \parskip<10pt \kern 10pt\kern -\parskip\fi \penalty 10000}
3028:
3029:
3030: \message{toc printing,}
3031:
3032: % Finish up the main text and prepare to read what we've written
3033: % to \contentsfile.
3034:
3035: \newskip\contentsrightmargin \contentsrightmargin=1in
3036: \def\startcontents#1{%
3037: \pagealignmacro
3038: \immediate\closeout \contentsfile
3039: \ifnum \pageno>0
3040: \pageno = -1 % Request roman numbered pages.
3041: \fi
3042: % Don't need to put `Contents' or `Short Contents' in the headline.
3043: % It is abundantly clear what they are.
3044: \unnumbchapmacro{#1}\def\thischapter{}%
3045: \begingroup % Set up to handle contents files properly.
3046: \catcode`\\=0 \catcode`\{=1 \catcode`\}=2 \catcode`\@=11
3047: \catcode`\^=7 % to see ^^e4 as \"a etc. juha@piuha.ydi.vtt.fi
3048: \raggedbottom % Worry more about breakpoints than the bottom.
3049: \advance\hsize by -\contentsrightmargin % Don't use the full line length.
3050: }
3051:
3052:
3053: % Normal (long) toc.
3054: \outer\def\contents{%
3055: \startcontents{\putwordTableofContents}%
3056: \input \jobname.toc
3057: \endgroup
3058: \vfill \eject
3059: }
3060:
3061: % And just the chapters.
3062: \outer\def\summarycontents{%
3063: \startcontents{\putwordShortContents}%
3064: %
3065: \let\chapentry = \shortchapentry
3066: \let\unnumbchapentry = \shortunnumberedentry
3067: % We want a true roman here for the page numbers.
3068: \secfonts
3069: \let\rm=\shortcontrm \let\bf=\shortcontbf \let\sl=\shortcontsl
3070: \rm
3071: \advance\baselineskip by 1pt % Open it up a little.
3072: \def\secentry ##1##2##3##4{}
3073: \def\unnumbsecentry ##1##2{}
3074: \def\subsecentry ##1##2##3##4##5{}
3075: \def\unnumbsubsecentry ##1##2{}
3076: \def\subsubsecentry ##1##2##3##4##5##6{}
3077: \def\unnumbsubsubsecentry ##1##2{}
3078: \input \jobname.toc
3079: \endgroup
3080: \vfill \eject
3081: }
3082: \let\shortcontents = \summarycontents
3083:
3084: % These macros generate individual entries in the table of contents.
3085: % The first argument is the chapter or section name.
3086: % The last argument is the page number.
3087: % The arguments in between are the chapter number, section number, ...
3088:
3089: % Chapter-level things, for both the long and short contents.
3090: \def\chapentry#1#2#3{\dochapentry{#2\labelspace#1}{#3}}
3091:
3092: % See comments in \dochapentry re vbox and related settings
3093: \def\shortchapentry#1#2#3{%
3094: \tocentry{\shortchaplabel{#2}\labelspace #1}{\doshortpageno{#3}}%
3095: }
3096:
3097: % Typeset the label for a chapter or appendix for the short contents.
3098: % The arg is, e.g. `Appendix A' for an appendix, or `3' for a chapter.
3099: % We could simplify the code here by writing out an \appendixentry
3100: % command in the toc file for appendices, instead of using \chapentry
3101: % for both, but it doesn't seem worth it.
3102: \setbox0 = \hbox{\shortcontrm \putwordAppendix }
3103: \newdimen\shortappendixwidth \shortappendixwidth = \wd0
3104:
3105: \def\shortchaplabel#1{%
3106: % We typeset #1 in a box of constant width, regardless of the text of
3107: % #1, so the chapter titles will come out aligned.
3108: \setbox0 = \hbox{#1}%
3109: \dimen0 = \ifdim\wd0 > \shortappendixwidth \shortappendixwidth \else 0pt \fi
3110: %
3111: % This space should be plenty, since a single number is .5em, and the
3112: % widest letter (M) is 1em, at least in the Computer Modern fonts.
3113: % (This space doesn't include the extra space that gets added after
3114: % the label; that gets put in in \shortchapentry above.)
3115: \advance\dimen0 by 1.1em
3116: \hbox to \dimen0{#1\hfil}%
3117: }
3118:
3119: \def\unnumbchapentry#1#2{\dochapentry{#1}{#2}}
3120: \def\shortunnumberedentry#1#2{\tocentry{#1}{\doshortpageno{#2}}}
3121:
3122: % Sections.
3123: \def\secentry#1#2#3#4{\dosecentry{#2.#3\labelspace#1}{#4}}
3124: \def\unnumbsecentry#1#2{\dosecentry{#1}{#2}}
3125:
3126: % Subsections.
3127: \def\subsecentry#1#2#3#4#5{\dosubsecentry{#2.#3.#4\labelspace#1}{#5}}
3128: \def\unnumbsubsecentry#1#2{\dosubsecentry{#1}{#2}}
3129:
3130: % And subsubsections.
3131: \def\subsubsecentry#1#2#3#4#5#6{%
3132: \dosubsubsecentry{#2.#3.#4.#5\labelspace#1}{#6}}
3133: \def\unnumbsubsubsecentry#1#2{\dosubsubsecentry{#1}{#2}}
3134:
3135:
3136: % This parameter controls the indentation of the various levels.
3137: \newdimen\tocindent \tocindent = 3pc
3138:
3139: % Now for the actual typesetting. In all these, #1 is the text and #2 is the
3140: % page number.
3141: %
3142: % If the toc has to be broken over pages, we would want to be at chapters
3143: % if at all possible; hence the \penalty.
3144: \def\dochapentry#1#2{%
3145: \penalty-300 \vskip\baselineskip
3146: \begingroup
3147: \chapentryfonts
3148: \tocentry{#1}{\dopageno{#2}}%
3149: \endgroup
3150: \nobreak\vskip .25\baselineskip
3151: }
3152:
3153: \def\dosecentry#1#2{\begingroup
3154: \secentryfonts \leftskip=\tocindent
3155: \tocentry{#1}{\dopageno{#2}}%
3156: \endgroup}
3157:
3158: \def\dosubsecentry#1#2{\begingroup
3159: \subsecentryfonts \leftskip=2\tocindent
3160: \tocentry{#1}{\dopageno{#2}}%
3161: \endgroup}
3162:
3163: \def\dosubsubsecentry#1#2{\begingroup
3164: \subsubsecentryfonts \leftskip=3\tocindent
3165: \tocentry{#1}{\dopageno{#2}}%
3166: \endgroup}
3167:
3168: % Final typesetting of a toc entry; we use the same \entry macro as for
3169: % the index entries, but we want to suppress hyphenation here. (We
3170: % can't do that in the \entry macro, since index entries might consist
3171: % of hyphenated-identifiers-that-do-not-fit-on-a-line-and-nothing-else.)
3172: %
3173: % \turnoffactive is for the sake of @" used for umlauts.
3174: \def\tocentry#1#2{\begingroup
3175: \hyphenpenalty = 10000
3176: \entry{\turnoffactive #1}{\turnoffactive #2}%
3177: \endgroup}
3178:
3179: % Space between chapter (or whatever) number and the title.
3180: \def\labelspace{\hskip1em \relax}
3181:
3182: \def\dopageno#1{{\rm #1}}
3183: \def\doshortpageno#1{{\rm #1}}
3184:
3185: \def\chapentryfonts{\secfonts \rm}
3186: \def\secentryfonts{\textfonts}
3187: \let\subsecentryfonts = \textfonts
3188: \let\subsubsecentryfonts = \textfonts
3189:
3190:
3191: \message{environments,}
3192:
3193: % Since these characters are used in examples, it should be an even number of
3194: % \tt widths. Each \tt character is 1en, so two makes it 1em.
3195: % Furthermore, these definitions must come after we define our fonts.
3196: \newbox\dblarrowbox \newbox\longdblarrowbox
3197: \newbox\pushcharbox \newbox\bullbox
3198: \newbox\equivbox \newbox\errorbox
3199:
3200: \let\ptexequiv = \equiv
3201:
3202: %{\tentt
3203: %\global\setbox\dblarrowbox = \hbox to 1em{\hfil$\Rightarrow$\hfil}
3204: %\global\setbox\longdblarrowbox = \hbox to 1em{\hfil$\mapsto$\hfil}
3205: %\global\setbox\pushcharbox = \hbox to 1em{\hfil$\dashv$\hfil}
3206: %\global\setbox\equivbox = \hbox to 1em{\hfil$\ptexequiv$\hfil}
3207: % Adapted from the manmac format (p.420 of TeXbook)
3208: %\global\setbox\bullbox = \hbox to 1em{\kern.15em\vrule height .75ex width .85ex
3209: % depth .1ex\hfil}
3210: %}
3211:
3212: \def\point{$\star$}
3213:
3214: \def\result{\leavevmode\raise.15ex\hbox to 1em{\hfil$\Rightarrow$\hfil}}
3215: \def\expansion{\leavevmode\raise.1ex\hbox to 1em{\hfil$\mapsto$\hfil}}
3216: \def\print{\leavevmode\lower.1ex\hbox to 1em{\hfil$\dashv$\hfil}}
3217:
3218: \def\equiv{\leavevmode\lower.1ex\hbox to 1em{\hfil$\ptexequiv$\hfil}}
3219:
3220: % Adapted from the TeXbook's \boxit.
3221: {\tentt \global\dimen0 = 3em}% Width of the box.
3222: \dimen2 = .55pt % Thickness of rules
3223: % The text. (`r' is open on the right, `e' somewhat less so on the left.)
3224: \setbox0 = \hbox{\kern-.75pt \tensf error\kern-1.5pt}
3225:
3226: \global\setbox\errorbox=\hbox to \dimen0{\hfil
3227: \hsize = \dimen0 \advance\hsize by -5.8pt % Space to left+right.
3228: \advance\hsize by -2\dimen2 % Rules.
3229: \vbox{
3230: \hrule height\dimen2
3231: \hbox{\vrule width\dimen2 \kern3pt % Space to left of text.
3232: \vtop{\kern2.4pt \box0 \kern2.4pt}% Space above/below.
3233: \kern3pt\vrule width\dimen2}% Space to right.
3234: \hrule height\dimen2}
3235: \hfil}
3236:
3237: % The @error{} command.
3238: \def\error{\leavevmode\lower.7ex\copy\errorbox}
3239:
3240: % @tex ... @end tex escapes into raw Tex temporarily.
3241: % One exception: @ is still an escape character, so that @end tex works.
3242: % But \@ or @@ will get a plain tex @ character.
3243:
3244: \def\tex{\begingroup
3245: \catcode `\\=0 \catcode `\{=1 \catcode `\}=2
3246: \catcode `\$=3 \catcode `\&=4 \catcode `\#=6
3247: \catcode `\^=7 \catcode `\_=8 \catcode `\~=13 \let~=\tie
3248: \catcode `\%=14
3249: \catcode 43=12
3250: \catcode`\"=12
3251: \catcode`\==12
3252: \catcode`\|=12
3253: \catcode`\<=12
3254: \catcode`\>=12
3255: \escapechar=`\\
3256: %
3257: \let\~=\ptextilde
3258: \let\{=\ptexlbrace
3259: \let\}=\ptexrbrace
3260: \let\.=\ptexdot
3261: \let\*=\ptexstar
3262: \let\dots=\ptexdots
3263: \def\endldots{\mathinner{\ldots\ldots\ldots\ldots}}
3264: \def\enddots{\relax\ifmmode\endldots\else$\mathsurround=0pt \endldots\,$\fi}
3265: \def\@{@}%
3266: \let\bullet=\ptexbullet
3267: \let\b=\ptexb \let\c=\ptexc \let\i=\ptexi \let\t=\ptext \let\l=\ptexl
3268: \let\L=\ptexL
3269: %
3270: \let\Etex=\endgroup}
3271:
3272: % Define @lisp ... @endlisp.
3273: % @lisp does a \begingroup so it can rebind things,
3274: % including the definition of @endlisp (which normally is erroneous).
3275:
3276: % Amount to narrow the margins by for @lisp.
3277: \newskip\lispnarrowing \lispnarrowing=0.4in
3278:
3279: % This is the definition that ^^M gets inside @lisp, @example, and other
3280: % such environments. \null is better than a space, since it doesn't
3281: % have any width.
3282: \def\lisppar{\null\endgraf}
3283:
3284: % Make each space character in the input produce a normal interword
3285: % space in the output. Don't allow a line break at this space, as this
3286: % is used only in environments like @example, where each line of input
3287: % should produce a line of output anyway.
3288: %
3289: {\obeyspaces %
3290: \gdef\sepspaces{\obeyspaces\let =\tie}}
3291:
3292: % Define \obeyedspace to be our active space, whatever it is. This is
3293: % for use in \parsearg.
3294: {\sepspaces%
3295: \global\let\obeyedspace= }
3296:
3297: % This space is always present above and below environments.
3298: \newskip\envskipamount \envskipamount = 0pt
3299:
3300: % Make spacing and below environment symmetrical. We use \parskip here
3301: % to help in doing that, since in @example-like environments \parskip
3302: % is reset to zero; thus the \afterenvbreak inserts no space -- but the
3303: % start of the next paragraph will insert \parskip
3304: %
3305: \def\aboveenvbreak{{\advance\envskipamount by \parskip
3306: \endgraf \ifdim\lastskip<\envskipamount
3307: \removelastskip \penalty-50 \vskip\envskipamount \fi}}
3308:
3309: \let\afterenvbreak = \aboveenvbreak
3310:
3311: % \nonarrowing is a flag. If "set", @lisp etc don't narrow margins.
3312: \let\nonarrowing=\relax
3313:
3314: %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
3315: % \cartouche: draw rectangle w/rounded corners around argument
3316: \font\circle=lcircle10
3317: \newdimen\circthick
3318: \newdimen\cartouter\newdimen\cartinner
3319: \newskip\normbskip\newskip\normpskip\newskip\normlskip
3320: \circthick=\fontdimen8\circle
3321: %
3322: \def\ctl{{\circle\char'013\hskip -6pt}}% 6pt from pl file: 1/2charwidth
3323: \def\ctr{{\hskip 6pt\circle\char'010}}
3324: \def\cbl{{\circle\char'012\hskip -6pt}}
3325: \def\cbr{{\hskip 6pt\circle\char'011}}
3326: \def\carttop{\hbox to \cartouter{\hskip\lskip
3327: \ctl\leaders\hrule height\circthick\hfil\ctr
3328: \hskip\rskip}}
3329: \def\cartbot{\hbox to \cartouter{\hskip\lskip
3330: \cbl\leaders\hrule height\circthick\hfil\cbr
3331: \hskip\rskip}}
3332: %
3333: \newskip\lskip\newskip\rskip
3334:
3335: \long\def\cartouche{%
3336: \begingroup
3337: \lskip=\leftskip \rskip=\rightskip
3338: \leftskip=0pt\rightskip=0pt %we want these *outside*.
3339: \cartinner=\hsize \advance\cartinner by-\lskip
3340: \advance\cartinner by-\rskip
3341: \cartouter=\hsize
3342: \advance\cartouter by 18pt % allow for 3pt kerns on either
3343: % side, and for 6pt waste from
3344: % each corner char
3345: \normbskip=\baselineskip \normpskip=\parskip \normlskip=\lineskip
3346: % Flag to tell @lisp, etc., not to narrow margin.
3347: \let\nonarrowing=\comment
3348: \vbox\bgroup
3349: \baselineskip=0pt\parskip=0pt\lineskip=0pt
3350: \carttop
3351: \hbox\bgroup
3352: \hskip\lskip
3353: \vrule\kern3pt
3354: \vbox\bgroup
3355: \hsize=\cartinner
3356: \kern3pt
3357: \begingroup
3358: \baselineskip=\normbskip
3359: \lineskip=\normlskip
3360: \parskip=\normpskip
3361: \vskip -\parskip
3362: \def\Ecartouche{%
3363: \endgroup
3364: \kern3pt
3365: \egroup
3366: \kern3pt\vrule
3367: \hskip\rskip
3368: \egroup
3369: \cartbot
3370: \egroup
3371: \endgroup
3372: }}
3373:
3374:
3375: % This macro is called at the beginning of all the @example variants,
3376: % inside a group.
3377: \def\nonfillstart{%
3378: \aboveenvbreak
3379: \inENV % This group ends at the end of the body
3380: \hfuzz = 12pt % Don't be fussy
3381: \sepspaces % Make spaces be word-separators rather than space tokens.
3382: \singlespace
3383: \let\par = \lisppar % don't ignore blank lines
3384: \obeylines % each line of input is a line of output
3385: \parskip = 0pt
3386: \parindent = 0pt
3387: \emergencystretch = 0pt % don't try to avoid overfull boxes
3388: % @cartouche defines \nonarrowing to inhibit narrowing
3389: % at next level down.
3390: \ifx\nonarrowing\relax
3391: \advance \leftskip by \lispnarrowing
3392: \exdentamount=\lispnarrowing
3393: \let\exdent=\nofillexdent
3394: \let\nonarrowing=\relax
3395: \fi
3396: }
3397:
3398: % To ending an @example-like environment, we first end the paragraph
3399: % (via \afterenvbreak's vertical glue), and then the group. That way we
3400: % keep the zero \parskip that the environments set -- \parskip glue
3401: % will be inserted at the beginning of the next paragraph in the
3402: % document, after the environment.
3403: %
3404: \def\nonfillfinish{\afterenvbreak\endgroup}%
3405:
3406: % This macro is
3407: \def\lisp{\begingroup
3408: \nonfillstart
3409: \let\Elisp = \nonfillfinish
3410: \tt
3411: \rawbackslash % have \ input char produce \ char from current font
3412: \gobble
3413: }
3414:
3415: % Define the \E... control sequence only if we are inside the
3416: % environment, so the error checking in \end will work.
3417: %
3418: % We must call \lisp last in the definition, since it reads the
3419: % return following the @example (or whatever) command.
3420: %
3421: \def\example{\begingroup \def\Eexample{\nonfillfinish\endgroup}\lisp}
3422: \def\smallexample{\begingroup \def\Esmallexample{\nonfillfinish\endgroup}\lisp}
3423: \def\smalllisp{\begingroup \def\Esmalllisp{\nonfillfinish\endgroup}\lisp}
3424:
3425: % @smallexample and @smalllisp. This is not used unless the @smallbook
3426: % command is given. Originally contributed by Pavel@xerox.
3427: %
3428: \def\smalllispx{\begingroup
3429: \nonfillstart
3430: \let\Esmalllisp = \nonfillfinish
3431: \let\Esmallexample = \nonfillfinish
3432: %
3433: % Smaller interline space and fonts for small examples.
3434: \setleading{10pt}%
3435: \indexfonts \tt
3436: \rawbackslash % make \ output the \ character from the current font (tt)
3437: \gobble
3438: }
3439:
3440: % This is @display; same as @lisp except use roman font.
3441: %
3442: \def\display{\begingroup
3443: \nonfillstart
3444: \let\Edisplay = \nonfillfinish
3445: \gobble
3446: }
3447:
3448: % This is @format; same as @display except don't narrow margins.
3449: %
3450: \def\format{\begingroup
3451: \let\nonarrowing = t
3452: \nonfillstart
3453: \let\Eformat = \nonfillfinish
3454: \gobble
3455: }
3456:
3457: % @flushleft (same as @format) and @flushright.
3458: %
3459: \def\flushleft{\begingroup
3460: \let\nonarrowing = t
3461: \nonfillstart
3462: \let\Eflushleft = \nonfillfinish
3463: \gobble
3464: }
3465: \def\flushright{\begingroup
3466: \let\nonarrowing = t
3467: \nonfillstart
3468: \let\Eflushright = \nonfillfinish
3469: \advance\leftskip by 0pt plus 1fill
3470: \gobble}
3471:
3472: % @quotation does normal linebreaking (hence we can't use \nonfillstart)
3473: % and narrows the margins.
3474: %
3475: \def\quotation{%
3476: \begingroup\inENV %This group ends at the end of the @quotation body
3477: {\parskip=0pt \aboveenvbreak}% because \aboveenvbreak inserts \parskip
3478: \singlespace
3479: \parindent=0pt
3480: % We have retained a nonzero parskip for the environment, since we're
3481: % doing normal filling. So to avoid extra space below the environment...
3482: \def\Equotation{\parskip = 0pt \nonfillfinish}%
3483: %
3484: % @cartouche defines \nonarrowing to inhibit narrowing at next level down.
3485: \ifx\nonarrowing\relax
3486: \advance\leftskip by \lispnarrowing
3487: \advance\rightskip by \lispnarrowing
3488: \exdentamount = \lispnarrowing
3489: \let\nonarrowing = \relax
3490: \fi
3491: }
3492:
3493: \message{defuns,}
3494: % Define formatter for defuns
3495: % First, allow user to change definition object font (\df) internally
3496: \def\setdeffont #1 {\csname DEF#1\endcsname}
3497:
3498: \newskip\defbodyindent \defbodyindent=.4in
3499: \newskip\defargsindent \defargsindent=50pt
3500: \newskip\deftypemargin \deftypemargin=12pt
3501: \newskip\deflastargmargin \deflastargmargin=18pt
3502:
3503: \newcount\parencount
3504: % define \functionparens, which makes ( and ) and & do special things.
3505: % \functionparens affects the group it is contained in.
3506: \def\activeparens{%
3507: \catcode`\(=\active \catcode`\)=\active \catcode`\&=\active
3508: \catcode`\[=\active \catcode`\]=\active}
3509:
3510: % Make control sequences which act like normal parenthesis chars.
3511: \let\lparen = ( \let\rparen = )
3512:
3513: {\activeparens % Now, smart parens don't turn on until &foo (see \amprm)
3514:
3515: % Be sure that we always have a definition for `(', etc. For example,
3516: % if the fn name has parens in it, \boldbrax will not be in effect yet,
3517: % so TeX would otherwise complain about undefined control sequence.
3518: \global\let(=\lparen \global\let)=\rparen
3519: \global\let[=\lbrack \global\let]=\rbrack
3520:
3521: \gdef\functionparens{\boldbrax\let&=\amprm\parencount=0 }
3522: \gdef\boldbrax{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb}
3523: % This is used to turn on special parens
3524: % but make & act ordinary (given that it's active).
3525: \gdef\boldbraxnoamp{\let(=\opnr\let)=\clnr\let[=\lbrb\let]=\rbrb\let&=\ampnr}
3526:
3527: % Definitions of (, ) and & used in args for functions.
3528: % This is the definition of ( outside of all parentheses.
3529: \gdef\oprm#1 {{\rm\char`\(}#1 \bf \let(=\opnested %
3530: \global\advance\parencount by 1 }
3531: %
3532: % This is the definition of ( when already inside a level of parens.
3533: \gdef\opnested{\char`\(\global\advance\parencount by 1 }
3534: %
3535: \gdef\clrm{% Print a paren in roman if it is taking us back to depth of 0.
3536: % also in that case restore the outer-level definition of (.
3537: \ifnum \parencount=1 {\rm \char `\)}\sl \let(=\oprm \else \char `\) \fi
3538: \global\advance \parencount by -1 }
3539: % If we encounter &foo, then turn on ()-hacking afterwards
3540: \gdef\amprm#1 {{\rm\}\let(=\oprm \let)=\clrm\ }
3541: %
3542: \gdef\normalparens{\boldbrax\let&=\ampnr}
3543: } % End of definition inside \activeparens
3544: %% These parens (in \boldbrax) actually are a little bolder than the
3545: %% contained text. This is especially needed for [ and ]
3546: \def\opnr{{\sf\char`\(}} \def\clnr{{\sf\char`\)}} \def\ampnr{\&}
3547: \def\lbrb{{\bf\char`\[}} \def\rbrb{{\bf\char`\]}}
3548:
3549: % First, defname, which formats the header line itself.
3550: % #1 should be the function name.
3551: % #2 should be the type of definition, such as "Function".
3552:
3553: \def\defname #1#2{%
3554: % Get the values of \leftskip and \rightskip as they were
3555: % outside the @def...
3556: \dimen2=\leftskip
3557: \advance\dimen2 by -\defbodyindent
3558: \dimen3=\rightskip
3559: \advance\dimen3 by -\defbodyindent
3560: \noindent %
3561: \setbox0=\hbox{\hskip \deflastargmargin{\rm #2}\hskip \deftypemargin}%
3562: \dimen0=\hsize \advance \dimen0 by -\wd0 % compute size for first line
3563: \dimen1=\hsize \advance \dimen1 by -\defargsindent %size for continuations
3564: \parshape 2 0in \dimen0 \defargsindent \dimen1 %
3565: % Now output arg 2 ("Function" or some such)
3566: % ending at \deftypemargin from the right margin,
3567: % but stuck inside a box of width 0 so it does not interfere with linebreaking
3568: {% Adjust \hsize to exclude the ambient margins,
3569: % so that \rightline will obey them.
3570: \advance \hsize by -\dimen2 \advance \hsize by -\dimen3
3571: \rlap{\rightline{{\rm #2}\hskip \deftypemargin}}}%
3572: % Make all lines underfull and no complaints:
3573: \tolerance=10000 \hbadness=10000
3574: \advance\leftskip by -\defbodyindent
3575: \exdentamount=\defbodyindent
3576: {\df #1}\enskip % Generate function name
3577: }
3578:
3579: % Actually process the body of a definition
3580: % #1 should be the terminating control sequence, such as \Edefun.
3581: % #2 should be the "another name" control sequence, such as \defunx.
3582: % #3 should be the control sequence that actually processes the header,
3583: % such as \defunheader.
3584:
3585: \def\defparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
3586: \medbreak %
3587: % Define the end token that this defining construct specifies
3588: % so that it will exit this group.
3589: \def#1{\endgraf\endgroup\medbreak}%
3590: \def#2{\begingroup\obeylines\activeparens\spacesplit#3}%
3591: \parindent=0in
3592: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3593: \exdentamount=\defbodyindent
3594: \begingroup %
3595: \catcode 61=\active % 61 is `='
3596: \obeylines\activeparens\spacesplit#3}
3597:
3598: \def\defmethparsebody #1#2#3#4 {\begingroup\inENV %
3599: \medbreak %
3600: % Define the end token that this defining construct specifies
3601: % so that it will exit this group.
3602: \def#1{\endgraf\endgroup\medbreak}%
3603: \def#2##1 {\begingroup\obeylines\activeparens\spacesplit{#3{##1}}}%
3604: \parindent=0in
3605: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3606: \exdentamount=\defbodyindent
3607: \begingroup\obeylines\activeparens\spacesplit{#3{#4}}}
3608:
3609: \def\defopparsebody #1#2#3#4#5 {\begingroup\inENV %
3610: \medbreak %
3611: % Define the end token that this defining construct specifies
3612: % so that it will exit this group.
3613: \def#1{\endgraf\endgroup\medbreak}%
3614: \def#2##1 ##2 {\def#4{##1}%
3615: \begingroup\obeylines\activeparens\spacesplit{#3{##2}}}%
3616: \parindent=0in
3617: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3618: \exdentamount=\defbodyindent
3619: \begingroup\obeylines\activeparens\spacesplit{#3{#5}}}
3620:
3621: % These parsing functions are similar to the preceding ones
3622: % except that they do not make parens into active characters.
3623: % These are used for "variables" since they have no arguments.
3624:
3625: \def\defvarparsebody #1#2#3{\begingroup\inENV% Environment for definitionbody
3626: \medbreak %
3627: % Define the end token that this defining construct specifies
3628: % so that it will exit this group.
3629: \def#1{\endgraf\endgroup\medbreak}%
3630: \def#2{\begingroup\obeylines\spacesplit#3}%
3631: \parindent=0in
3632: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3633: \exdentamount=\defbodyindent
3634: \begingroup %
3635: \catcode 61=\active %
3636: \obeylines\spacesplit#3}
3637:
3638: % This is used for \def{tp,vr}parsebody. It could probably be used for
3639: % some of the others, too, with some judicious conditionals.
3640: %
3641: \def\parsebodycommon#1#2#3{%
3642: \begingroup\inENV %
3643: \medbreak %
3644: % Define the end token that this defining construct specifies
3645: % so that it will exit this group.
3646: \def#1{\endgraf\endgroup\medbreak}%
3647: \def#2##1 {\begingroup\obeylines\spacesplit{#3{##1}}}%
3648: \parindent=0in
3649: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3650: \exdentamount=\defbodyindent
3651: \begingroup\obeylines
3652: }
3653:
3654: \def\defvrparsebody#1#2#3#4 {%
3655: \parsebodycommon{#1}{#2}{#3}%
3656: \spacesplit{#3{#4}}%
3657: }
3658:
3659: % This loses on `@deftp {Data Type} {struct termios}' -- it thinks the
3660: % type is just `struct', because we lose the braces in `{struct
3661: % termios}' when \spacesplit reads its undelimited argument. Sigh.
3662: % \let\deftpparsebody=\defvrparsebody
3663: %
3664: % So, to get around this, we put \empty in with the type name. That
3665: % way, TeX won't find exactly `{...}' as an undelimited argument, and
3666: % won't strip off the braces.
3667: %
3668: \def\deftpparsebody #1#2#3#4 {%
3669: \parsebodycommon{#1}{#2}{#3}%
3670: \spacesplit{\parsetpheaderline{#3{#4}}}\empty
3671: }
3672:
3673: % Fine, but then we have to eventually remove the \empty *and* the
3674: % braces (if any). That's what this does, putting the result in \tptemp.
3675: %
3676: \def\removeemptybraces\empty#1\relax{\def\tptemp{#1}}%
3677:
3678: % After \spacesplit has done its work, this is called -- #1 is the final
3679: % thing to call, #2 the type name (which starts with \empty), and #3
3680: % (which might be empty) the arguments.
3681: %
3682: \def\parsetpheaderline#1#2#3{%
3683: \removeemptybraces#2\relax
3684: #1{\tptemp}{#3}%
3685: }%
3686:
3687: \def\defopvarparsebody #1#2#3#4#5 {\begingroup\inENV %
3688: \medbreak %
3689: % Define the end token that this defining construct specifies
3690: % so that it will exit this group.
3691: \def#1{\endgraf\endgroup\medbreak}%
3692: \def#2##1 ##2 {\def#4{##1}%
3693: \begingroup\obeylines\spacesplit{#3{##2}}}%
3694: \parindent=0in
3695: \advance\leftskip by \defbodyindent \advance \rightskip by \defbodyindent
3696: \exdentamount=\defbodyindent
3697: \begingroup\obeylines\spacesplit{#3{#5}}}
3698:
3699: % Split up #2 at the first space token.
3700: % call #1 with two arguments:
3701: % the first is all of #2 before the space token,
3702: % the second is all of #2 after that space token.
3703: % If #2 contains no space token, all of it is passed as the first arg
3704: % and the second is passed as empty.
3705:
3706: {\obeylines
3707: \gdef\spacesplit#1#2^^M{\endgroup\spacesplitfoo{#1}#2 \relax\spacesplitfoo}%
3708: \long\gdef\spacesplitfoo#1#2 #3#4\spacesplitfoo{%
3709: \ifx\relax #3%
3710: #1{#2}{}\else #1{#2}{#3#4}\fi}}
3711:
3712: % So much for the things common to all kinds of definitions.
3713:
3714: % Define @defun.
3715:
3716: % First, define the processing that is wanted for arguments of \defun
3717: % Use this to expand the args and terminate the paragraph they make up
3718:
3719: \def\defunargs #1{\functionparens \sl
3720: % Expand, preventing hyphenation at `-' chars.
3721: % Note that groups don't affect changes in \hyphenchar.
3722: \hyphenchar\tensl=0
3723: #1%
3724: \hyphenchar\tensl=45
3725: \ifnum\parencount=0 \else \errmessage{unbalanced parens in @def arguments}\fi%
3726: \interlinepenalty=10000
3727: \advance\rightskip by 0pt plus 1fil
3728: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
3729: }
3730:
3731: \def\deftypefunargs #1{%
3732: % Expand, preventing hyphenation at `-' chars.
3733: % Note that groups don't affect changes in \hyphenchar.
3734: % Use \boldbraxnoamp, not \functionparens, so that & is not special.
3735: \boldbraxnoamp
3736: \tclose{#1}% avoid \code because of side effects on active chars
3737: \interlinepenalty=10000
3738: \advance\rightskip by 0pt plus 1fil
3739: \endgraf\penalty 10000\vskip -\parskip\penalty 10000%
3740: }
3741:
3742: % Do complete processing of one @defun or @defunx line already parsed.
3743:
3744: % @deffn Command forward-char nchars
3745:
3746: \def\deffn{\defmethparsebody\Edeffn\deffnx\deffnheader}
3747:
3748: \def\deffnheader #1#2#3{\doind {fn}{\code{#2}}%
3749: \begingroup\defname {#2}{#1}\defunargs{#3}\endgroup %
3750: \catcode 61=\other % Turn off change made in \defparsebody
3751: }
3752:
3753: % @defun == @deffn Function
3754:
3755: \def\defun{\defparsebody\Edefun\defunx\defunheader}
3756:
3757: \def\defunheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
3758: \begingroup\defname {#1}{Function}%
3759: \defunargs {#2}\endgroup %
3760: \catcode 61=\other % Turn off change made in \defparsebody
3761: }
3762:
3763: % @deftypefun int foobar (int @var{foo}, float @var{bar})
3764:
3765: \def\deftypefun{\defparsebody\Edeftypefun\deftypefunx\deftypefunheader}
3766:
3767: % #1 is the data type. #2 is the name and args.
3768: \def\deftypefunheader #1#2{\deftypefunheaderx{#1}#2 \relax}
3769: % #1 is the data type, #2 the name, #3 the args.
3770: \def\deftypefunheaderx #1#2 #3\relax{%
3771: \doind {fn}{\code{#2}}% Make entry in function index
3772: \begingroup\defname {\defheaderxcond#1\relax$$$#2}{Function}%
3773: \deftypefunargs {#3}\endgroup %
3774: \catcode 61=\other % Turn off change made in \defparsebody
3775: }
3776:
3777: % @deftypefn {Library Function} int foobar (int @var{foo}, float @var{bar})
3778:
3779: \def\deftypefn{\defmethparsebody\Edeftypefn\deftypefnx\deftypefnheader}
3780:
3781: % \defheaderxcond#1\relax$$$
3782: % puts #1 in @code, followed by a space, but does nothing if #1 is null.
3783: \def\defheaderxcond#1#2$$${\ifx#1\relax\else\code{#1#2} \fi}
3784:
3785: % #1 is the classification. #2 is the data type. #3 is the name and args.
3786: \def\deftypefnheader #1#2#3{\deftypefnheaderx{#1}{#2}#3 \relax}
3787: % #1 is the classification, #2 the data type, #3 the name, #4 the args.
3788: \def\deftypefnheaderx #1#2#3 #4\relax{%
3789: \doind {fn}{\code{#3}}% Make entry in function index
3790: \begingroup
3791: \normalparens % notably, turn off `&' magic, which prevents
3792: % at least some C++ text from working
3793: \defname {\defheaderxcond#2\relax$$$#3}{#1}%
3794: \deftypefunargs {#4}\endgroup %
3795: \catcode 61=\other % Turn off change made in \defparsebody
3796: }
3797:
3798: % @defmac == @deffn Macro
3799:
3800: \def\defmac{\defparsebody\Edefmac\defmacx\defmacheader}
3801:
3802: \def\defmacheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
3803: \begingroup\defname {#1}{Macro}%
3804: \defunargs {#2}\endgroup %
3805: \catcode 61=\other % Turn off change made in \defparsebody
3806: }
3807:
3808: % @defspec == @deffn Special Form
3809:
3810: \def\defspec{\defparsebody\Edefspec\defspecx\defspecheader}
3811:
3812: \def\defspecheader #1#2{\doind {fn}{\code{#1}}% Make entry in function index
3813: \begingroup\defname {#1}{Special Form}%
3814: \defunargs {#2}\endgroup %
3815: \catcode 61=\other % Turn off change made in \defparsebody
3816: }
3817:
3818: % This definition is run if you use @defunx
3819: % anywhere other than immediately after a @defun or @defunx.
3820:
3821: \def\deffnx #1 {\errmessage{@deffnx in invalid context}}
3822: \def\defunx #1 {\errmessage{@defunx in invalid context}}
3823: \def\defmacx #1 {\errmessage{@defmacx in invalid context}}
3824: \def\defspecx #1 {\errmessage{@defspecx in invalid context}}
3825: \def\deftypefnx #1 {\errmessage{@deftypefnx in invalid context}}
3826: \def\deftypeunx #1 {\errmessage{@deftypeunx in invalid context}}
3827:
3828: % @defmethod, and so on
3829:
3830: % @defop {Funny Method} foo-class frobnicate argument
3831:
3832: \def\defop #1 {\def\defoptype{#1}%
3833: \defopparsebody\Edefop\defopx\defopheader\defoptype}
3834:
3835: \def\defopheader #1#2#3{%
3836: \dosubind {fn}{\code{#2}}{on #1}% Make entry in function index
3837: \begingroup\defname {#2}{\defoptype{} on #1}%
3838: \defunargs {#3}\endgroup %
3839: }
3840:
3841: % @defmethod == @defop Method
3842:
3843: \def\defmethod{\defmethparsebody\Edefmethod\defmethodx\defmethodheader}
3844:
3845: \def\defmethodheader #1#2#3{%
3846: \dosubind {fn}{\code{#2}}{on #1}% entry in function index
3847: \begingroup\defname {#2}{Method on #1}%
3848: \defunargs {#3}\endgroup %
3849: }
3850:
3851: % @defcv {Class Option} foo-class foo-flag
3852:
3853: \def\defcv #1 {\def\defcvtype{#1}%
3854: \defopvarparsebody\Edefcv\defcvx\defcvarheader\defcvtype}
3855:
3856: \def\defcvarheader #1#2#3{%
3857: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
3858: \begingroup\defname {#2}{\defcvtype{} of #1}%
3859: \defvarargs {#3}\endgroup %
3860: }
3861:
3862: % @defivar == @defcv {Instance Variable}
3863:
3864: \def\defivar{\defvrparsebody\Edefivar\defivarx\defivarheader}
3865:
3866: \def\defivarheader #1#2#3{%
3867: \dosubind {vr}{\code{#2}}{of #1}% Make entry in var index
3868: \begingroup\defname {#2}{Instance Variable of #1}%
3869: \defvarargs {#3}\endgroup %
3870: }
3871:
3872: % These definitions are run if you use @defmethodx, etc.,
3873: % anywhere other than immediately after a @defmethod, etc.
3874:
3875: \def\defopx #1 {\errmessage{@defopx in invalid context}}
3876: \def\defmethodx #1 {\errmessage{@defmethodx in invalid context}}
3877: \def\defcvx #1 {\errmessage{@defcvx in invalid context}}
3878: \def\defivarx #1 {\errmessage{@defivarx in invalid context}}
3879:
3880: % Now @defvar
3881:
3882: % First, define the processing that is wanted for arguments of @defvar.
3883: % This is actually simple: just print them in roman.
3884: % This must expand the args and terminate the paragraph they make up
3885: \def\defvarargs #1{\normalparens #1%
3886: \interlinepenalty=10000
3887: \endgraf\penalty 10000\vskip -\parskip\penalty 10000}
3888:
3889: % @defvr Counter foo-count
3890:
3891: \def\defvr{\defvrparsebody\Edefvr\defvrx\defvrheader}
3892:
3893: \def\defvrheader #1#2#3{\doind {vr}{\code{#2}}%
3894: \begingroup\defname {#2}{#1}\defvarargs{#3}\endgroup}
3895:
3896: % @defvar == @defvr Variable
3897:
3898: \def\defvar{\defvarparsebody\Edefvar\defvarx\defvarheader}
3899:
3900: \def\defvarheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
3901: \begingroup\defname {#1}{Variable}%
3902: \defvarargs {#2}\endgroup %
3903: }
3904:
3905: % @defopt == @defvr {User Option}
3906:
3907: \def\defopt{\defvarparsebody\Edefopt\defoptx\defoptheader}
3908:
3909: \def\defoptheader #1#2{\doind {vr}{\code{#1}}% Make entry in var index
3910: \begingroup\defname {#1}{User Option}%
3911: \defvarargs {#2}\endgroup %
3912: }
3913:
3914: % @deftypevar int foobar
3915:
3916: \def\deftypevar{\defvarparsebody\Edeftypevar\deftypevarx\deftypevarheader}
3917:
3918: % #1 is the data type. #2 is the name.
3919: \def\deftypevarheader #1#2{%
3920: \doind {vr}{\code{#2}}% Make entry in variables index
3921: \begingroup\defname {\defheaderxcond#1\relax$$$#2}{Variable}%
3922: \interlinepenalty=10000
3923: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
3924: \endgroup}
3925:
3926: % @deftypevr {Global Flag} int enable
3927:
3928: \def\deftypevr{\defvrparsebody\Edeftypevr\deftypevrx\deftypevrheader}
3929:
3930: \def\deftypevrheader #1#2#3{\doind {vr}{\code{#3}}%
3931: \begingroup\defname {\defheaderxcond#2\relax$$$#3}{#1}
3932: \interlinepenalty=10000
3933: \endgraf\penalty 10000\vskip -\parskip\penalty 10000
3934: \endgroup}
3935:
3936: % This definition is run if you use @defvarx
3937: % anywhere other than immediately after a @defvar or @defvarx.
3938:
3939: \def\defvrx #1 {\errmessage{@defvrx in invalid context}}
3940: \def\defvarx #1 {\errmessage{@defvarx in invalid context}}
3941: \def\defoptx #1 {\errmessage{@defoptx in invalid context}}
3942: \def\deftypevarx #1 {\errmessage{@deftypevarx in invalid context}}
3943: \def\deftypevrx #1 {\errmessage{@deftypevrx in invalid context}}
3944:
3945: % Now define @deftp
3946: % Args are printed in bold, a slight difference from @defvar.
3947:
3948: \def\deftpargs #1{\bf \defvarargs{#1}}
3949:
3950: % @deftp Class window height width ...
3951:
3952: \def\deftp{\deftpparsebody\Edeftp\deftpx\deftpheader}
3953:
3954: \def\deftpheader #1#2#3{\doind {tp}{\code{#2}}%
3955: \begingroup\defname {#2}{#1}\deftpargs{#3}\endgroup}
3956:
3957: % This definition is run if you use @deftpx, etc
3958: % anywhere other than immediately after a @deftp, etc.
3959:
3960: \def\deftpx #1 {\errmessage{@deftpx in invalid context}}
3961:
3962: \message{cross reference,}
3963: % Define cross-reference macros
3964: \newwrite \auxfile
3965:
3966: \newif\ifhavexrefs % True if xref values are known.
3967: \newif\ifwarnedxrefs % True if we warned once that they aren't known.
3968:
3969: % \setref{foo} defines a cross-reference point named foo.
3970:
3971: \def\setref#1{%
3972: \dosetq{#1-title}{Ytitle}%
3973: \dosetq{#1-pg}{Ypagenumber}%
3974: \dosetq{#1-snt}{Ysectionnumberandtype}}
3975:
3976: \def\unnumbsetref#1{%
3977: \dosetq{#1-title}{Ytitle}%
3978: \dosetq{#1-pg}{Ypagenumber}%
3979: \dosetq{#1-snt}{Ynothing}}
3980:
3981: \def\appendixsetref#1{%
3982: \dosetq{#1-title}{Ytitle}%
3983: \dosetq{#1-pg}{Ypagenumber}%
3984: \dosetq{#1-snt}{Yappendixletterandtype}}
3985:
3986: % \xref, \pxref, and \ref generate cross-references to specified points.
3987: % For \xrefX, #1 is the node name, #2 the name of the Info
3988: % cross-reference, #3 the printed node name, #4 the name of the Info
3989: % file, #5 the name of the printed manual. All but the node name can be
3990: % omitted.
3991: %
3992: \def\pxref#1{\putwordsee{} \xrefX[#1,,,,,,,]}
3993: \def\xref#1{\putwordSee{} \xrefX[#1,,,,,,,]}
3994: \def\ref#1{\xrefX[#1,,,,,,,]}
3995: \def\xrefX[#1,#2,#3,#4,#5,#6]{\begingroup
3996: \def\printedmanual{\ignorespaces #5}%
3997: \def\printednodename{\ignorespaces #3}%
3998: \setbox1=\hbox{\printedmanual}%
3999: \setbox0=\hbox{\printednodename}%
4000: \ifdim \wd0 = 0pt
4001: % No printed node name was explicitly given.
4002: \expandafter\ifx\csname SETxref-automatic-section-title\endcsname\relax
4003: % Use the node name inside the square brackets.
4004: \def\printednodename{\ignorespaces #1}%
4005: \else
4006: % Use the actual chapter/section title appear inside
4007: % the square brackets. Use the real section title if we have it.
4008: \ifdim \wd1>0pt%
4009: % It is in another manual, so we don't have it.
4010: \def\printednodename{\ignorespaces #1}%
4011: \else
4012: \ifhavexrefs
4013: % We know the real title if we have the xref values.
4014: \def\printednodename{\refx{#1-title}{}}%
4015: \else
4016: % Otherwise just copy the Info node name.
4017: \def\printednodename{\ignorespaces #1}%
4018: \fi%
4019: \fi
4020: \fi
4021: \fi
4022: %
4023: % If we use \unhbox0 and \unhbox1 to print the node names, TeX does not
4024: % insert empty discretionaries after hyphens, which means that it will
4025: % not find a line break at a hyphen in a node names. Since some manuals
4026: % are best written with fairly long node names, containing hyphens, this
4027: % is a loss. Therefore, we give the text of the node name again, so it
4028: % is as if TeX is seeing it for the first time.
4029: \ifdim \wd1 > 0pt
4030: \putwordsection{} ``\printednodename'' in \cite{\printedmanual}%
4031: \else
4032: % _ (for example) has to be the character _ for the purposes of the
4033: % control sequence corresponding to the node, but it has to expand
4034: % into the usual \leavevmode...\vrule stuff for purposes of
4035: % printing. So we \turnoffactive for the \refx-snt, back on for the
4036: % printing, back off for the \refx-pg.
4037: {\turnoffactive \refx{#1-snt}{}}%
4038: \space [\printednodename],\space
4039: \turnoffactive \putwordpage\tie\refx{#1-pg}{}%
4040: \fi
4041: \endgroup}
4042:
4043: % \dosetq is the interface for calls from other macros
4044:
4045: % Use \turnoffactive so that punctuation chars such as underscore
4046: % work in node names.
4047: \def\dosetq #1#2{{\let\folio=0 \turnoffactive \auxhat%
4048: \edef\next{\write\auxfile{\internalsetq {#1}{#2}}}%
4049: \next}}
4050:
4051: % \internalsetq {foo}{page} expands into
4052: % CHARACTERS 'xrdef {foo}{...expansion of \Ypage...}
4053: % When the aux file is read, ' is the escape character
4054:
4055: \def\internalsetq #1#2{'xrdef {#1}{\csname #2\endcsname}}
4056:
4057: % Things to be expanded by \internalsetq
4058:
4059: \def\Ypagenumber{\folio}
4060:
4061: \def\Ytitle{\thissection}
4062:
4063: \def\Ynothing{}
4064:
4065: \def\Ysectionnumberandtype{%
4066: \ifnum\secno=0 \putwordChapter\xreftie\the\chapno %
4067: \else \ifnum \subsecno=0 \putwordSection\xreftie\the\chapno.\the\secno %
4068: \else \ifnum \subsubsecno=0 %
4069: \putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno %
4070: \else %
4071: \putwordSection\xreftie\the\chapno.\the\secno.\the\subsecno.\the\subsubsecno %
4072: \fi \fi \fi }
4073:
4074: \def\Yappendixletterandtype{%
4075: \ifnum\secno=0 \putwordAppendix\xreftie'char\the\appendixno{}%
4076: \else \ifnum \subsecno=0 \putwordSection\xreftie'char\the\appendixno.\the\secno %
4077: \else \ifnum \subsubsecno=0 %
4078: \putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno %
4079: \else %
4080: \putwordSection\xreftie'char\the\appendixno.\the\secno.\the\subsecno.\the\subsubsecno %
4081: \fi \fi \fi }
4082:
4083: \gdef\xreftie{'tie}
4084:
4085: % Use TeX 3.0's \inputlineno to get the line number, for better error
4086: % messages, but if we're using an old version of TeX, don't do anything.
4087: %
4088: \ifx\inputlineno\thisisundefined
4089: \let\linenumber = \empty % Non-3.0.
4090: \else
4091: \def\linenumber{\the\inputlineno:\space}
4092: \fi
4093:
4094: % Define \refx{NAME}{SUFFIX} to reference a cross-reference string named NAME.
4095: % If its value is nonempty, SUFFIX is output afterward.
4096:
4097: \def\refx#1#2{%
4098: \expandafter\ifx\csname X#1\endcsname\relax
4099: % If not defined, say something at least.
4100: $\langle$un\-de\-fined$\rangle$%
4101: \ifhavexrefs
4102: \message{\linenumber Undefined cross reference `#1'.}%
4103: \else
4104: \ifwarnedxrefs\else
4105: \global\warnedxrefstrue
4106: \message{Cross reference values unknown; you must run TeX again.}%
4107: \fi
4108: \fi
4109: \else
4110: % It's defined, so just use it.
4111: \csname X#1\endcsname
4112: \fi
4113: #2% Output the suffix in any case.
4114: }
4115:
4116: % Read the last existing aux file, if any. No error if none exists.
4117:
4118: % This is the macro invoked by entries in the aux file.
4119: \def\xrdef #1#2{
4120: {\catcode`\'=\other\expandafter \gdef \csname X#1\endcsname {#2}}}
4121:
4122: \def\readauxfile{%
4123: \begingroup
4124: \catcode `\^^@=\other
4125: \catcode `\&=\other
4126: \catcode `\=\other
4127: \catcode `\^^C=\other
4128: \catcode `\^^D=\other
4129: \catcode `\^^E=\other
4130: \catcode `\^^F=\other
4131: \catcode `\^^G=\other
4132: \catcode `\^^H=\other
4133: \catcode `\ =\other
4134: \catcode `\^^L=\other
4135: \catcode `\=\other
4136: \catcode `\=\other
4137: \catcode `\=\other
4138: \catcode `\=\other
4139: \catcode `\=\other
4140: \catcode `\=\other
4141: \catcode `\=\other
4142: \catcode `\=\other
4143: \catcode `\=\other
4144: \catcode `\=\other
4145: \catcode `\=\other
4146: \catcode `\=\other
4147: \catcode 26=\other
4148: \catcode `\^^[=\other
4149: \catcode `\^^\=\other
4150: \catcode `\^^]=\other
4151: \catcode `\^^^=\other
4152: \catcode `\^^_=\other
4153: \catcode `\@=\other
4154: \catcode `\^=\other
4155: \catcode `\~=\other
4156: \catcode `\[=\other
4157: \catcode `\]=\other
4158: \catcode`\"=\other
4159: \catcode`\_=\other
4160: \catcode`\|=\other
4161: \catcode`\<=\other
4162: \catcode`\>=\other
4163: \catcode `\$=\other
4164: \catcode `\#=\other
4165: \catcode `\&=\other
4166: % `\+ does not work, so use 43.
4167: \catcode 43=\other
4168: % Make the characters 128-255 be printing characters
4169: {%
4170: \count 1=128
4171: \def\loop{%
4172: \catcode\count 1=\other
4173: \advance\count 1 by 1
4174: \ifnum \count 1<256 \loop \fi
4175: }%
4176: }%
4177: % the aux file uses ' as the escape.
4178: % Turn off \ as an escape so we do not lose on
4179: % entries which were dumped with control sequences in their names.
4180: % For example, 'xrdef {$\leq $-fun}{page ...} made by @defun ^^
4181: % Reference to such entries still does not work the way one would wish,
4182: % but at least they do not bomb out when the aux file is read in.
4183: \catcode `\{=1 \catcode `\}=2
4184: \catcode `\%=\other
4185: \catcode `\'=0
4186: \catcode`\^=7 % to make ^^e4 etc usable in xref tags
4187: \catcode `\\=\other
4188: \openin 1 \jobname.aux
4189: \ifeof 1 \else \closein 1 \input \jobname.aux \global\havexrefstrue
4190: \global\warnedobstrue
4191: \fi
4192: % Open the new aux file. Tex will close it automatically at exit.
4193: \openout \auxfile=\jobname.aux
4194: \endgroup}
4195:
4196:
4197: % Footnotes.
4198:
4199: \newcount \footnoteno
4200:
4201: % The trailing space in the following definition for supereject is
4202: % vital for proper filling; pages come out unaligned when you do a
4203: % pagealignmacro call if that space before the closing brace is
4204: % removed.
4205: \def\supereject{\par\penalty -20000\footnoteno =0 }
4206:
4207: % @footnotestyle is meaningful for info output only..
4208: \let\footnotestyle=\comment
4209:
4210: \let\ptexfootnote=\footnote
4211:
4212: {\catcode `\@=11
4213: %
4214: % Auto-number footnotes. Otherwise like plain.
4215: \gdef\footnote{%
4216: \global\advance\footnoteno by \@ne
4217: \edef\thisfootno{$^{\the\footnoteno}$}%
4218: %
4219: % In case the footnote comes at the end of a sentence, preserve the
4220: % extra spacing after we do the footnote number.
4221: \let\@sf\empty
4222: \ifhmode\edef\@sf{\spacefactor\the\spacefactor}\/\fi
4223: %
4224: % Remove inadvertent blank space before typesetting the footnote number.
4225: \unskip
4226: \thisfootno\@sf
4227: \footnotezzz
4228: }%
4229:
4230: % Don't bother with the trickery in plain.tex to not require the
4231: % footnote text as a parameter. Our footnotes don't need to be so general.
4232: %
4233: \long\gdef\footnotezzz#1{\insert\footins{%
4234: % We want to typeset this text as a normal paragraph, even if the
4235: % footnote reference occurs in (for example) a display environment.
4236: % So reset some parameters.
4237: \interlinepenalty\interfootnotelinepenalty
4238: \splittopskip\ht\strutbox % top baseline for broken footnotes
4239: \splitmaxdepth\dp\strutbox
4240: \floatingpenalty\@MM
4241: \leftskip\z@skip
4242: \rightskip\z@skip
4243: \spaceskip\z@skip
4244: \xspaceskip\z@skip
4245: \parindent\defaultparindent
4246: %
4247: % Hang the footnote text off the number.
4248: \hang
4249: \textindent{\thisfootno}%
4250: %
4251: % Don't crash into the line above the footnote text. Since this
4252: % expands into a box, it must come within the paragraph, lest it
4253: % provide a place where TeX can split the footnote.
4254: \footstrut
4255: #1\strut}%
4256: }
4257:
4258: }%end \catcode `\@=11
4259:
4260: % Set the baselineskip to #1, and the lineskip and strut size
4261: % correspondingly. There is no deep meaning behind these magic numbers
4262: % used as factors; they just match (closely enough) what Knuth defined.
4263: %
4264: \def\lineskipfactor{.08333}
4265: \def\strutheightpercent{.70833}
4266: \def\strutdepthpercent {.29167}
4267: %
4268: \def\setleading#1{%
4269: \normalbaselineskip = #1\relax
4270: \normallineskip = \lineskipfactor\normalbaselineskip
4271: \normalbaselines
4272: \setbox\strutbox =\hbox{%
4273: \vrule width0pt height\strutheightpercent\baselineskip
4274: depth \strutdepthpercent \baselineskip
4275: }%
4276: }
4277:
4278: % @| inserts a changebar to the left of the current line. It should
4279: % surround any changed text. This approach does *not* work if the
4280: % change spans more than two lines of output. To handle that, we would
4281: % have adopt a much more difficult approach (putting marks into the main
4282: % vertical list for the beginning and end of each change).
4283: %
4284: \def\|{%
4285: % \vadjust can only be used in horizontal mode.
4286: \leavevmode
4287: %
4288: % Append this vertical mode material after the current line in the output.
4289: \vadjust{%
4290: % We want to insert a rule with the height and depth of the current
4291: % leading; that is exactly what \strutbox is supposed to record.
4292: \vskip-\baselineskip
4293: %
4294: % \vadjust-items are inserted at the left edge of the type. So
4295: % the \llap here moves out into the left-hand margin.
4296: \llap{%
4297: %
4298: % For a thicker or thinner bar, change the `1pt'.
4299: \vrule height\baselineskip width1pt
4300: %
4301: % This is the space between the bar and the text.
4302: \hskip 12pt
4303: }%
4304: }%
4305: }
4306:
4307: % For a final copy, take out the rectangles
4308: % that mark overfull boxes (in case you have decided
4309: % that the text looks ok even though it passes the margin).
4310: %
4311: \def\finalout{\overfullrule=0pt}
4312:
4313:
4314: % End of control word definitions.
4315:
4316: \message{and turning on texinfo input format.}
4317:
4318: \def\openindices{%
4319: \newindex{cp}%
4320: \newcodeindex{fn}%
4321: \newcodeindex{vr}%
4322: \newcodeindex{tp}%
4323: \newcodeindex{ky}%
4324: \newcodeindex{pg}%
4325: }
4326:
4327: % Set some numeric style parameters, for 8.5 x 11 format.
4328:
4329: %\hsize = 6.5in
4330: \newdimen\defaultparindent \defaultparindent = 15pt
4331: \parindent = \defaultparindent
4332: \parskip 18pt plus 1pt
4333: \setleading{15pt}
4334: \advance\topskip by 1.2cm
4335:
4336: % Prevent underfull vbox error messages.
4337: \vbadness=10000
4338:
4339: % Following George Bush, just get rid of widows and orphans.
4340: \widowpenalty=10000
4341: \clubpenalty=10000
4342:
4343: % Use TeX 3.0's \emergencystretch to help line breaking, but if we're
4344: % using an old version of TeX, don't do anything. We want the amount of
4345: % stretch added to depend on the line length, hence the dependence on
4346: % \hsize. This makes it come to about 9pt for the 8.5x11 format.
4347: %
4348: \ifx\emergencystretch\thisisundefined
4349: % Allow us to assign to \emergencystretch anyway.
4350: \def\emergencystretch{\dimen0}%
4351: \else
4352: \emergencystretch = \hsize
4353: \divide\emergencystretch by 45
4354: \fi
4355:
4356: % Use @smallbook to reset parameters for 7x9.5 format (or else 7x9.25)
4357: \def\smallbook{
4358:
4359: % These values for secheadingskip and subsecheadingskip are
4360: % experiments. RJC 7 Aug 1992
4361: \global\secheadingskip = 17pt plus 6pt minus 3pt
4362: \global\subsecheadingskip = 14pt plus 6pt minus 3pt
4363:
4364: \global\lispnarrowing = 0.3in
4365: \setleading{12pt}
4366: \advance\topskip by -1cm
4367: \global\parskip 3pt plus 1pt
4368: \global\hsize = 5in
4369: \global\vsize=7.5in
4370: \global\tolerance=700
4371: \global\hfuzz=1pt
4372: \global\contentsrightmargin=0pt
4373: \global\deftypemargin=0pt
4374: \global\defbodyindent=.5cm
4375:
4376: \global\pagewidth=\hsize
4377: \global\pageheight=\vsize
4378:
4379: \global\let\smalllisp=\smalllispx
4380: \global\let\smallexample=\smalllispx
4381: \global\def\Esmallexample{\Esmalllisp}
4382: }
4383:
4384: % Use @afourpaper to print on European A4 paper.
4385: \def\afourpaper{
4386: \global\tolerance=700
4387: \global\hfuzz=1pt
4388: \setleading{12pt}
4389: \global\parskip 15pt plus 1pt
4390:
4391: \global\vsize= 53\baselineskip
4392: \advance\vsize by \topskip
4393: %\global\hsize= 5.85in % A4 wide 10pt
4394: \global\hsize= 6.5in
4395: \global\outerhsize=\hsize
4396: \global\advance\outerhsize by 0.5in
4397: \global\outervsize=\vsize
4398: \global\advance\outervsize by 0.6in
4399:
4400: \global\pagewidth=\hsize
4401: \global\pageheight=\vsize
4402: }
4403:
4404: % Allow control of the text dimensions. Parameters in order: textheight;
4405: % textwidth; voffset; hoffset; binding offset; topskip.
4406: % All require a dimension;
4407: % header is additional; added length extends the bottom of the page.
4408:
4409: \def\changepagesizes#1#2#3#4#5#6{
4410: \global\vsize= #1
4411: \global\topskip= #6
4412: \advance\vsize by \topskip
4413: \global\voffset= #3
4414: \global\hsize= #2
4415: \global\outerhsize=\hsize
4416: \global\advance\outerhsize by 0.5in
4417: \global\outervsize=\vsize
4418: \global\advance\outervsize by 0.6in
4419: \global\pagewidth=\hsize
4420: \global\pageheight=\vsize
4421: \global\normaloffset= #4
4422: \global\bindingoffset= #5}
4423:
4424: % A specific text layout, 24x15cm overall, intended for A4 paper. Top margin
4425: % 29mm, hence bottom margin 28mm, nominal side margin 3cm.
4426: \def\afourlatex
4427: {\global\tolerance=700
4428: \global\hfuzz=1pt
4429: \setleading{12pt}
4430: \global\parskip 15pt plus 1pt
4431: \advance\baselineskip by 1.6pt
4432: \changepagesizes{237mm}{150mm}{3.6mm}{3.6mm}{3mm}{7mm}
4433: }
4434:
4435: % Use @afourwide to print on European A4 paper in wide format.
4436: \def\afourwide{\afourpaper
4437: \changepagesizes{9.5in}{6.5in}{\hoffset}{\normaloffset}{\bindingoffset}{7mm}}
4438:
4439: % Define macros to output various characters with catcode for normal text.
4440: \catcode`\"=\other
4441: \catcode`\~=\other
4442: \catcode`\^=\other
4443: \catcode`\_=\other
4444: \catcode`\|=\other
4445: \catcode`\<=\other
4446: \catcode`\>=\other
4447: \catcode`\+=\other
4448: \def\normaldoublequote{"}
4449: \def\normaltilde{~}
4450: \def\normalcaret{^}
4451: \def\normalunderscore{_}
4452: \def\normalverticalbar{|}
4453: \def\normalless{<}
4454: \def\normalgreater{>}
4455: \def\normalplus{+}
4456:
4457: % This macro is used to make a character print one way in ttfont
4458: % where it can probably just be output, and another way in other fonts,
4459: % where something hairier probably needs to be done.
4460: %
4461: % #1 is what to print if we are indeed using \tt; #2 is what to print
4462: % otherwise. Since all the Computer Modern typewriter fonts have zero
4463: % interword stretch (and shrink), and it is reasonable to expect all
4464: % typewriter fonts to have this, we can check that font parameter.
4465: %
4466: \def\ifusingtt#1#2{\ifdim \fontdimen3\the\font=0pt #1\else #2\fi}
4467:
4468: % Turn off all special characters except @
4469: % (and those which the user can use as if they were ordinary).
4470: % Most of these we simply print from the \tt font, but for some, we can
4471: % use math or other variants that look better in normal text.
4472:
4473: \catcode`\"=\active
4474: \def\activedoublequote{{\tt \char '042}}
4475: \let"=\activedoublequote
4476: \catcode`\~=\active
4477: \def~{{\tt \char '176}}
4478: \chardef\hat=`\^
4479: \catcode`\^=\active
4480: \def\auxhat{\def^{'hat}}
4481: \def^{{\tt \hat}}
4482:
4483: \catcode`\_=\active
4484: \def_{\ifusingtt\normalunderscore\_}
4485: % Subroutine for the previous macro.
4486: \def\_{\leavevmode \kern.06em \vbox{\hrule width.3em height.1ex}}
4487:
4488: \catcode`\|=\active
4489: \def|{{\tt \char '174}}
4490: \chardef \less=`\<
4491: \catcode`\<=\active
4492: \def<{{\tt \less}}
4493: \chardef \gtr=`\>
4494: \catcode`\>=\active
4495: \def>{{\tt \gtr}}
4496: \catcode`\+=\active
4497: \def+{{\tt \char 43}}
4498: %\catcode 27=\active
4499: %\def^^[{$\diamondsuit$}
4500:
4501: % Set up an active definition for =, but don't enable it most of the time.
4502: {\catcode`\==\active
4503: \global\def={{\tt \char 61}}}
4504:
4505: \catcode`+=\active
4506: \catcode`\_=\active
4507:
4508: % If a .fmt file is being used, characters that might appear in a file
4509: % name cannot be active until we have parsed the command line.
4510: % So turn them off again, and have \everyjob (or @setfilename) turn them on.
4511: % \otherifyactive is called near the end of this file.
4512: \def\otherifyactive{\catcode`+=\other \catcode`\_=\other}
4513:
4514: \catcode`\@=0
4515:
4516: % \rawbackslashxx output one backslash character in current font
4517: \global\chardef\rawbackslashxx=`\\
4518: %{\catcode`\\=\other
4519: %@gdef@rawbackslashxx{\}}
4520:
4521: % \rawbackslash redefines \ as input to do \rawbackslashxx.
4522: {\catcode`\\=\active
4523: @gdef@rawbackslash{@let\=@rawbackslashxx }}
4524:
4525: % \normalbackslash outputs one backslash in fixed width font.
4526: \def\normalbackslash{{\tt\rawbackslashxx}}
4527:
4528: % Say @foo, not \foo, in error messages.
4529: \escapechar=`\@
4530:
4531: % \catcode 17=0 % Define control-q
4532: \catcode`\\=\active
4533:
4534: % Used sometimes to turn off (effectively) the active characters
4535: % even after parsing them.
4536: @def@turnoffactive{@let"=@normaldoublequote
4537: @let\=@realbackslash
4538: @let~=@normaltilde
4539: @let^=@normalcaret
4540: @let_=@normalunderscore
4541: @let|=@normalverticalbar
4542: @let<=@normalless
4543: @let>=@normalgreater
4544: @let+=@normalplus}
4545:
4546: @def@normalturnoffactive{@let"=@normaldoublequote
4547: @let\=@normalbackslash
4548: @let~=@normaltilde
4549: @let^=@normalcaret
4550: @let_=@normalunderscore
4551: @let|=@normalverticalbar
4552: @let<=@normalless
4553: @let>=@normalgreater
4554: @let+=@normalplus}
4555:
4556: % Make _ and + \other characters, temporarily.
4557: % This is canceled by @fixbackslash.
4558: @otherifyactive
4559:
4560: % If a .fmt file is being used, we don't want the `\input texinfo' to show up.
4561: % That is what \eatinput is for; after that, the `\' should revert to printing
4562: % a backslash.
4563: %
4564: @gdef@eatinput input texinfo{@fixbackslash}
4565: @global@let\ = @eatinput
4566:
4567: % On the other hand, perhaps the file did not have a `\input texinfo'. Then
4568: % the first `\{ in the file would cause an error. This macro tries to fix
4569: % that, assuming it is called before the first `\' could plausibly occur.
4570: % Also back turn on active characters that might appear in the input
4571: % file name, in case not using a pre-dumped format.
4572: %
4573: @gdef@fixbackslash{@ifx\@eatinput @let\ = @normalbackslash @fi
4574: @catcode`+=@active @catcode`@_=@active}
4575:
4576: %% These look ok in all fonts, so just make them not special. The @rm below
4577: %% makes sure that the current font starts out as the newly loaded cmr10
4578: @catcode`@$=@other @catcode`@%=@other @catcode`@&=@other @catcode`@#=@other
4579:
4580: @textfonts
4581: @rm
4582:
4583: @c Local variables:
4584: @c page-delimiter: "^\\\\message"
4585: @c End:
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