[texhax] TeX Queries (1)

Paul Isambert zappathustra at free.fr
Tue Jul 10 09:17:33 CEST 2012

[Snipping a lot.]

Barbara Beeton <bnb at ams.org> a écrit:
>     Paul S: so let me get this right, `^^{ ... }' is not for inserting margin
>     notes?  The TeXBook says it ``stand for a silent index entry''.  What does
>     the single up arrow construct (`^{...}') do?  TBH I'm getting a bit
>     confused now.
> this input code *does* generate margin notes
> for preliminary versions of the book, but
> that is not its primary purpose, which is to
> generate index entries.
> the macros used to structure the texbook and
> other volumes in the "computers and typesetting"
> series are in the file  manmac.tex , which is
> located in the same directory as plain.tex.

The one-hat version also typesets the material in the main text, whereas
the two-hat version creates a `silent' index entry, i.e. not directly
related to something in the main text.

>     Paul S : Could you elaborate on this please? Is there a reference table for
>     these values and their respective chars?
> regarding fonts that weren't originally
> intended for tex use, the story is quite
> different, and i can't be of much help.

I don't know how \char works in XeTeX, but in LuaTeX you normally map
your fonts on Unicode, so that \char<number> should typeset the character
with codepoint <number>.


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