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-% More bugs (sigh) in The TeXbook
-
-\input manmac
-\proofmodefalse
-\raggedbottom
-\output{\onepageout{\unvbox255\kern-\dimen@ \vfil}}
-
-\def\rhead{Bugs in {\tensl The \TeX book}, second printing}
-\def\bugonpage#1(#2) \par{\bigbreak\tenpoint
-  \hrule\line{\lower3.5pt\vbox to13pt{}Page #1\hfil(#2)}\hrule\nobreak\medskip}
-
-\noindent This is a list of all corrections made to {\sl The \TeX book\/}
-since the second printing. If your copy doesn't say `{\sl\kern-1pt Second
-printing (October 1984)\/}' on the copyright page, you should also look at
-the previous bug list. In fact, the most important corrections to the
-first printing were discovered first, so they've already been~made.
-
-\bugonpage 23, line 16 (10/13/84)
-
-\tenpoint\indent
-|This is TeX, Version 1.0 (preloaded format=plain 83.7.15)|
-
-\bugonpage 33, line 32 (10/21/84)
-
-The bottom line shows how far \TeX\ has gotten until now in the
-|story|{\parfillskip=0pt\par}
-
-\bugonpage 41, lines 7 and 8 (10/8/85)
-
-\ddanger The twin operations ^|\uppercase||{|\<token list>|}| and
-^|\lowercase||{|\<token list>|}| go through a given token list and convert
-all of the character tokens to their\parfillskip=0pt\enddanger
-
-\bugonpage 57, line 17 (1/6/86)
-
-|dd|\quad didot point ($\rm1157\,dd=1238\,pt$)
-
-\bugonpage 61, lines 17--19 (12/18/85)
-
-\ninepoint\noindent
-|depth|, |em|, |ex|,
-|fil|, |height|, |in|, |l|, |minus|, |mm|, |mu|, |pc|, |plus|,
-|pt|, |scaled|, |sp|, |spread|, |to|, |true|, |width|. ^^{reserved words}
-\ (See Appendix~I for references to the contexts in which each of these is
-recognized as a keyword.)
-
-\bugonpage 67, append a new exercise (1/19/85)
-
-\exno=5 \def\chapno{11}
-\gdef\frac#1/#2{\leavevmode\kern.1em
-  \raise.5ex\hbox{\the\scriptfont0 #1}\kern-.1em
-  /\kern-.15em\lower.25ex\hbox{\the\scriptfont0 #2}}
-
-\ddangerexercise Construct a |\frac| macro such that `|\frac1/2|' yields
-`\frac1/2'.
-
-\bugonpage 130, line 15 (4/17/85)
-
-\beginmathdemo
-|$y'''_3+g'^2$|&y'''_3+g'{}^2\cr
-\endmathdemo
-
-\bugonpage 170, line 5 (5/28/85)
-
-\ninepoint
-\line{tall, unslanted
-letter; and so on. But two of the examples involve corrections that were}
-
-\bugonpage 194, lines 13--15 should be centered better (10/22/84)
-
-\ninepoint
-$$\displaylines{\hfill x\equiv x;\hfill\llap{(1)}\cr
-   \hfill\hbox{if}\quad x\equiv y\quad\hbox{then}\quad
-      y\equiv x;\hfill\llap{(2)}\cr
-   \hfill\hbox{if}\quad x\equiv y\quad\hbox{and}\quad
-      y\equiv z\quad\hbox{then}\quad
-      x\equiv z.\hfill\llap{(3)}\cr}$$
-
-\bugonpage 215, lines 9 and 10 from the bottom (12/23/84)
-
-\ninepoint\noindent
-general format
-is the same as for |\def| and |\gdef|, but \TeX\ blindly expands the tokens
-of the replacement text according to the expansion rules above. For
-example, consider
-
-\bugonpage 233, lines 15--19 (1/19/85)
-
-\medskip
-\settabs\+\indent&10\frac1/2 lbs.\qquad&\it Servings\qquad&\cr
-\+&\negthinspace\it Weight&\it Servings&
-  {\it Approximate Cooking Time\/}*\cr
-\smallskip
-\+&8 lbs.&6&1 hour and 50 to 55 minutes\cr
-\+&9 lbs.&7 to 8&About 2 hours\cr
-\+&9\frac1/2 lbs.&8 to 9&2 hours and 10 to 15 minutes\cr
-\+&10\frac1/2 lbs.&9 to 10&2 hours and 15 to 20 minutes\cr
-
-\bugonpage 236, lines 18--21 (1/19/85)
-
-\ninepoint
-$$\vbox{\openup2pt
-\halign{\hfil\bf#&\quad\hfil\it#\hfil&\quad\hfil#\hfil&
-           \quad\hfil#\hfil&\quad#\hfil\cr
-Squab&Poussin&2&\frac3/4 to 1&Broil, Grill, Roast\cr
-Broiler&Poulet Nouveau&2 to 3&1\frac1/2 to 2\frac1/2&Broil, Grill, Roast\cr
-Fryer&Poulet Reine&3 to 5&2 to 3&Fry, Saut\'e, Roast\cr
-Roaster&Poularde&5\frac1/2 to 9&Over 3&Roast, Poach, Fricassee\cr}}$$
-[This change should also be made at the bottom of page 237.]
-
-\bugonpage 236, fifth-last line (1/19/85)
-
-\ninepoint
-| Squab&Poussin&2&\frac3/4 to 1&Broil, Grill, Roast\cr|
-
-\bugonpage 237, line 25 (10/10/84)
-
-\ninepoint\noindent
-saying `^|\tabskip||=|\<glue>'. For example,
-let's do the poultry table again, but with the{\parfillskip=0pt\par}
-
-\bugonpage 265, bottom line (11/6/85)
-
-[insert a comma after `{\eightss LEONTIEF}'.]
-
-\bugonpage 271, line 8 (11/12/85)
-
-\ninepoint
-\beginsyntax
-<fil unit>\is[fil]\alt<fil unit>[l]
-\endsyntax
-
-\bugonpage 280, lines 7 and 8 (1/8/85)
-
-\ninepoint\noindent
-\<4-bit number>.\enskip
-The specified output stream is opened or closed, for use in |\write|
-commands, as explained in Chapter~21.
-
-\bugonpage 300, lines 5--10 [changed for version 1.3] (11/25/84)
-
-\ninepoint\noindent
-what part of \TeX's memory has become overloaded;
-one of the following fourteen things will be mentioned:
-\begindisplay
-|number of strings|\qquad(names of control sequences and files)\cr
-|pool size|\qquad(the characters in such names)\cr
-|main memory size|\qquad(boxes, glue, breakpoints, token lists,
-  characters, etc.)\cr
-\enddisplay
-
-\bugonpage 300, lines 23--29 [changed for version 1.3] (11/25/84)
-
-\danger If you have a job that doesn't overflow \TeX's capacity, yet
-you want to see just how closely you have approached the limits,
-just set ^|\tracingstats| to a positive value before the end of your
-job. The log file will then conclude with a report on your actual
-usage of the first eleven things named above (i.e., the number of strings,
-\dots, the save size), in that order. ^^{stack positions}
-Furthermore, if you set |\tracingstats| equal to 2~or~more, \TeX\
-will show its current memory usage whenever it
-does a ^|\shipout| command. Such statistics are broken into two
-parts; `|490&5950|' means, for example, that 490 words are being used
-for ``large'' things like boxes, glue, and
-breakpoints, while 5950 words are being used for ``small'' things like
-tokens and characters.
-
-\bugonpage 302, line 14 (10/8/85)
-
-\begintt
-.\tenrm || (ligature ---)
-\endtt
-
-\bugonpage 305, line 26 (12/24/84)
-
-\ninepoint\noindent
-sentable as |^^M|. Asking \TeX\ to |\show\^^M|
-\looseness-1
-produces the response `|>| |\^^M=macro:->\|\]|.|'.
-
-\bugonpage 306, line 10 (7/1/85)
-
-\ninepoint\noindent
-no ``^{explicit kerns},'' and an italic correction is an
-explicit kern.) \ But the italic correction may be too much (especially in an
-italic font); |shelf{|^|\kern||0pt}ful| is often best.
-
-\bugonpage 308, line 25 (3/25/85)
-
-\ninepoint\indent
-|\def\appendroman#1#2#3{\edef#1{\def\noexpand#1{\csname|
-
-\bugonpage 311, insert a new answer (1/19/85)
-
-\ninepoint
-\ansno11.6:
- |\def\frac#1/#2{\leavevmode\kern.1em|\parbreak
-|\raise.5ex\hbox{\the\scriptfont0 #1}\kern-.1em|\parbreak
-|/\kern-.15em\lower.25ex\hbox{\the\scriptfont0 #2}}|
-
-\smallskip\noindent[This causes answer 12.8 to move to page 312;
-answer 12.16 also moves to page 313.]
-
-\bugonpage 320, lines 17--20 (8/10/85)
-
-\ninepoint
-\ansno17.16:
- |\def\sqr#1#2{{\vcenter{\vbox{\hrule height.#2pt|\parbreak
-        |        \hbox{\vrule width.#2pt height#1pt \kern#1pt|\parbreak
-        |           \vrule width.#2pt}|\parbreak
-        |        \hrule height.#2pt}}}}|
-
-\bugonpage 327, lines 26--33 (10/22/84)
-
-\ninepoint
-\ansno19.16:
-  |$$\displaylines{\hfill x\equiv x;\hfill\llap{(1)}\cr|\parbreak
-        |   \hfill\hbox{if}\quad x\equiv y\quad\hbox{then}\quad|\parbreak
-        |      y\equiv x;\hfill\llap{(2)}\cr|\parbreak
-        |   \hfill\hbox{if}\quad x\equiv y\quad\hbox{and}\quad|\parbreak
-        |      y\equiv z\quad\hbox{then}\quad|\parbreak
-        |      x\equiv z.\hfill\llap{(3)}\cr}$$|\par\medskip\noindent
-There's also a trickier solution, which begins with
-\begintt
-$$\displaylines{x\equiv x;\hfil\llap{(1)}\hfilneg\cr
-\endtt
-
-\bugonpage 330, line 29 (11/15/85)
-
-\ninepoint\indent
-|\edef\next#1#2{\def#1{\b#2\d}} \next\a\c|
-
-\bugonpage 332, lines 17--24 (1/19/85)
-
-\ninepoint
-\begintt
-\settabs\+\indent&10\frac1/2 lbs.\qquad&\it Servings\qquad&\cr
-\+&\negthinspace\it Weight&\it Servings&
-  {\it Approximate Cooking Time\/}*\cr
-\smallskip
-\+&8 lbs.&6&1 hour and 50 to 55 minutes\cr
-\+&9 lbs.&7 to 8&About 2 hours\cr
-\+&9\frac1/2 lbs.&8 to 9&2 hours and 10 to 15 minutes\cr
-\+&10\frac1/2 lbs.&9 to 10&2 hours and 15 to 20 minutes\cr
-\endtt
-
-\bugonpage 332, lines 33--35 (1/19/85)
-
-\ninepoint\noindent
-proofs. \ (You weren't supposed to think of this,
-but it has to be mentioned.) \ See exercise 11.\fracexno\ for the `|\frac|'
-macro; it's better to say `\frac1/2' than `$1\over2$', in a cookbook.\par
-Another way to treat this table would be to display it in a vbox, instead
-of including a first column whose sole purpose is to specify indentation.
-
-\bugonpage 337, line 28 (11/12/85)
-
-\ninepoint\noindent |\nextnumber|. Quick should put `|\relax|'
-at the end of his macro. \ (The {keywords} |l|,{\parfillskip=0pt\par}
-
-\bugonpage 357, lines 35 and 36 (1/8/85)
-
-\ninepoint\noindent
-|\def\*{\discretionary{\thinspace\the\textfont2\char2}{}{}}|
-
-\bugonpage 357, last two lines (4/17/85)
-
-\ninepoint\noindent
-|\def\pr@m@s{\ifx'\next\let\next\pr@@@s|%
-  | \else\ifx^\next\let\next\pr@@@t|\par\noindent
-|  \else\let\next\egroup\fi\fi \next}|\par\noindent
-|\def\pr@@@s#1{\prim@s} \def\pr@@@t#1#2{#2\egroup}|
-
-\bugonpage 358, lines 8--12 (1/23/85)
-
-\ninepoint\noindent
-|\def\hbar{{\mathchar'26\mkern-9muh}}|\hfil\break\null
-|\def\surd{{\mathchar"1270}}|\hfil\break\null
-|\def\angle{{\vbox{\ialign{$\m@th\scriptstyle##$\crcr|\hfil\break\null
-|      \not\mathrel{\mkern14mu}\crcr \noalign{\nointerlineskip}|\hfil\break\null
-|      \mkern2.5mu\leaders\hrule height.34pt\hfill\mkern2.5mu\crcr}}}}|
-
-\bugonpage 359, lines 7--8 (1/22/85)
-
-\ninepoint\noindent
-|\def\ddots{\mathinner{\mkern1mu\raise7pt\vbox{\kern7pt\hbox{.}}\mkern2mu|%
-\hfil\break\null
-|    \raise4pt\hbox{.}\mkern2mu\raise1pt\hbox{.}\mkern1mu}}|
-
-\bugonpage 360, line 22 (1/22/85)
-
-\ninepoint\noindent
-|  \mkern5mu \raise.6\dimen@\copy\rootbox \mkern-10mu \box0}|
-
-\bugonpage 361, line 3 (3/27/85)
-
-\ninepoint\noindent
-|\def\buildrel#1\over#2{\mathrel{\mathop{\kern0pt #2}\limits^{#1}}}|
-
-\bugonpage 361, lines 19--20 (1/22/85)
-
-\ninepoint\noindent
-|\def\bmod{\mskip-\medmuskip \mkern5mu|\hfil\break\null
-|  \mathbin{\rm mod} \penalty900 \mkern5mu \mskip-\medmuskip}|
-
-\bugonpage 361, line 27 (5/1/85)
-
-\ninepoint\noindent
-|\def\matrix#1{\null\,\vcenter{\normalbaselines\m@th|
-
-\bugonpage 361, bottom line (5/1/85)
-
-\ninepoint\noindent
-|  \null\;\vbox{\kern\ht1\box2}\endgroup}|
-
-\bugonpage 362, line 9 (5/1/85)
-
-\ninepoint\noindent
-|\def\eqalign#1{\null\,\vcenter{\openup1\jot \m@th|
-
-\bugonpage 362, lines 17--29 (8/10/85)
-
-{\parindent=0pt\ninepoint
-|\def\@lign{\tabskip=0pt\everycr={}} % restore inside \displ@y|\par
-|\def|^|\displaylines||#1{\displ@y|\parbreak%
-|  \halign{\hbox to\displaywidth{|%
- |$\hfil\@lign\displaystyle##\hfil$}\crcr|\parbreak%
-|    #1\crcr}}|
-\smallbreak
-|\def|^|\eqalignno||#1{\displ@y \tabskip=|^|\centering|\parbreak%
-|  \halign to\displaywidth{\hfil$\@lign\displaystyle{##}$\tabskip=0pt|\parbreak%
-|    &$\@lign\displaystyle{{}##}$\hfil\tabskip=\centering|\parbreak%
-|    &\llap{$\@lign##$}\tabskip=0pt\crcr|\parbreak%
-|    #1\crcr}}|\par
-|\def|^|\leqalignno||#1{\displ@y \tabskip=\centering|\parbreak%
-|  \halign to\displaywidth{\hfil$\@lign\displaystyle{##}$\tabskip=0pt|\parbreak%
-|    &$\@lign\displaystyle{{}##}$\hfil\tabskip=\centering|\parbreak%
-|    &\kern-\displaywidth\rlap{$\@lign##$}\tabskip=\displaywidth\crcr|\parbreak%
-|    #1\crcr}}|
-\par}
-
-\bugonpage 363, line 9 (5/12/85)
-
-\ninepoint\noindent
-|\def\footnote#1{\let\@sf=\empty % parameter #2 (the text) is read later|
-
-\bugonpage 364, line 3 (3/23/85)
-
-\ninepoint\noindent
-|\def\plainoutput{\shipout\vbox{\makeheadline\pagebody\makefootline}%|
-
-\bugonpage 364, fifth-last line (9/15/85)
-
-\ninepoint\noindent
-|\def\fmtname{plain}\def\fmtversion{2.0} % identifies the current format|
-
-\bugonpage 399, eighth-last line (2/11/85)
-
-\ninepoint\noindent
-|  \baselineskip=\footnotebaselineskip\noindent\unhbox0\par}|
-
-\bugonpage 401, line 5 (1/29/85)
-
-\ninepoint\noindent
-{|\fontdimen| parameters to qualify as a math symbol font).
-(2)~Set all the font identifiers\parfillskip=0pt\par}
-
-\bugonpage 414, line 10 (12/17/84)
-
-\ninepoint\noindent
-|\font\titlefont=cmssdc40           % titles in chapter openings|
-
-%\bugonpage 420, line 9 (10/3/85)
-%
-%\ninepoint\noindent
-%|\def\AmSTeX{$\cal A\kern-.1667em\lower.5ex\hbox{$\cal M$}\kern-.075em|
-% that change comes under `font data', explained away below
-
-\bugonpage 444, bottom line (1/10/85)
-
-\ninepoint\noindent
-depth $d(z)+v$, consisting
-of box~$x$ followed by an appropriate kern followed by box~$z$.
-
-\bugonpage 461, entry for character codes (11/6/85)
-
-\eightpoint
-Add `{\sl see also\/} category codes'.
-
-\bugonpage 463, entries for {\tt dd}, Didot, and didot (1/6/86)
-
-\eightpoint
-Remove the circumflex accents.
-
-\bugonpage 466, left column (1/19/85)
-
-\eightpoint
-fractions, 67, 139--143, 152, 170, 179,\par
-\qquad 186, 444--445.\par
-\quad huge, 196.\par
-\quad slashed form, 67, 139--140, 233, 236.
-
-\bugonpage 467, index entry for {\tt\char`\\hsize} (6/14/85)
-
-\eightpoint
-Add a reference to page {\it 60}.
-
-\bugonpage 469, index entry for {\tt\char`\\kern} (7/1/85)
-
-\eightpoint
-Add a reference to page {\it 306}.
-
-\bugonpage 469, index entry for kerns (7/1/85)
-
-\eightpoint
-Add a reference to page 306.
-
-\bugonpage 469, new entry (11/12/85)
-
-\eightpoint
-|l| after |fil|, $\underline{271}$, 337.
-
-\bugonpage 469, second line on the right (9/13/85)
-
-\eightpoint
-%\def\LaTeX{L\kern-.25em\raise.7ex\hbox{a}\kern-.05em\TeX} % old style
-{L\kern -.36em\raise.6ex\hbox{\sixrm A}\kern-.15em\TeX}, 137.
-
-\bugonpage 470, index entries for {\tt\char`\\longleftarrow}
-      thru {\tt\char`\\Longrightarrow} (10/5/84)
-
-\eightpoint
-The references to page 358 should be underlined (seven times).
-
-\bugonpage 475, index entry for punctuation in formulas (4/29/85)
-
-\eightpoint
-Add a reference to page 161.
-
-\bugonpage 476, index entry for {\tt\char`\\scriptspace} (8/10/85)
-
-\eightpoint
-Change `445' to `445--446'.
-
-\bugonpage 478, first and last lines (10/11/84)
-
-\noindent Delete the last line in the right-hand column
-(since it appears on page 479), and add the following line
-at the top of the left-hand column (since it was dropped by mistake
-from the second printing):
-
-\smallskip
-\eightpoint styles of math formatting, 140--141, 441--447.
-
-\bugonpage 478, new entry after tabbing (5/28/85)
-
-\eightpoint
-tables, {\sl see\/} alignments, tabbing.
-
-\bugonpage 478, tabskip entries (3/25/85)
-
-\eightpoint\noindent Instead of `237--239' and `237--238' it should say
-`$\underline{237}$--$\underline{239}$' twice.
-
-\bugonpage 481, the entry for {\tt\char`\\widetilde} (9/23/85)
-
-\eightpoint
-Page 359 should be underlined.
-
-\bugonpage 483, lines 16--17 (1/19/85)
-
-|P.O. Box 9506|\parbreak
-|Providence RI 02940-9506, USA.|
-
-\bugonpage 483, lines 22--23 (1/19/85)
-
-P.O. Box 9506\par
-Providence RI 02940-9506, USA.
-
-\bigskip
-\hrule
-\bigskip\noindent\tenrm
-Note: The next printing will use the ``real'' Computer Modern fonts
-instead of the ``almost'' Computer Modern fonts. Therefore many of
-the line breaks will be slightly different. Also, the font-related
-numerical data on pages 27, 29, 66, 75, 76, 79, 88, 98, 99, 112, 113, 310,
-314, 396, 399, 409, 420, and 459 will be different. However, these
-differences need not be listed here, because the old book was correct with
-respect to the old fonts.
-
-\bye