[latexrefman] New todo's

Hefferon, Jim S. jhefferon at smcvt.edu
Tue Oct 16 00:53:42 CEST 2018

I agree that it looks good.  I have nothing to add to Karl's comments except that Iif you make some changes and send it up then I'll convert to Texinfo and put it in.  It may take a couple of days since I am at a conference ("The Science of Stories").



From: latexrefman <latexrefman-bounces+jhefferon=smcvt.edu at tug.org> on behalf of Karl Berry <karl at freefriends.org>
Sent: Monday, October 15, 2018 5:41:00 PM
To: solimeno at gmail.com
Cc: latexrefman at tug.org
Subject: Re: [latexrefman] New todo's

Hi Bob - nice, thanks. In reverse order.

    Commands that cause the counter(s) {counter} to be typeset as a
    lowercase or uppercase letter.

Perhaps: ... uppercase (English) letter, a--z or A--Z.
(Just to be explicit that letters like German es-zet are not included here.)

What I'm curious about is what happens if the value is <1 or >26.
Does LaTeX report an error? Or does it just typeset some "random"

    The accent mark is selected by <number>, a numeric argument,
    followed by a space and then a <character> argument to construct the
    accented character in the current font.

The <number> is a character code in the current font, but the
<character> can come from a different font. (I'll insert the texbook.tex
description below since I have it up.) I don't think we need to explain
everything Knuth does, just say there can be an optional font change
between the <number> and the <character>.

Also, for completeness, we should say that the space factor is set to 1000.
(I didn't remember that until I reread Knuth's description.)

--thanks, karl.
[from texbook.tex]

\\^|\accent|\<8-bit number>\<optional assignments>.
Here ^\<optional assignments> stands for zero or more \<assignment>
commands other than ^|\setbox|.
If the assignments are not followed by a \<character>, where
\<character> stands for any of the commands just discussed in the previous
paragraph, \TeX\ treats |\accent| as if it were |\char|, except that
the space factor is set to 1000. Otherwise the character that follows
the assignment is accented by the character that corresponds to the
\<8-bit number>. \ (The purpose of the intervening assignments is to
allow the accenter and accentee to be in different fonts.) \ If the
accent must be moved up or down, it is put into an hbox that is
raised or lowered. Then the accent is effectively superposed on the
character by means of kerns, in such a way that the width of the accent
does not influence the width of the resulting horizontal list.
Finally, \TeX\ sets |\spacefactor=1000|.

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