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Sender: Mailing list for the LaTeX3 project <[log in to unmask]>
From: Hans Aberg <[log in to unmask]>
Date: Tue, 7 Oct 1997 11:39:12 +0200
In-Reply-To: <[log in to unmask]>
Reply-To: Mailing list for the LaTeX3 project <[log in to unmask]>
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Matthew Swift <[log in to unmask]> writes:
>> Are there any reasons for LaTeX having multiple AUX
>> files?
>They are only necessary in an \includeonly scenario.  Some system
>state (counters only at this point) from the UNincluded files is
>stored in the aux files.  Otherwise they would be overwritten.

  Could one not, instead of using \includeonly, have a feature that turns
off the typeset output, which is supposed to be much faster (but I do not
know if it really is). Then one could use a single aux file, and the files
one does not want to print, one turns off the typeset output, instead of
using \includeonly.

  Otherwise, I am not sure it is necessary having all references getting
right when working with many files, and doing a subfile compilation. In the
scenario I am playing around with one has a main file, indicated by a
command \project{main}, which tells subfile compilations which files to
look in to get such information of bibliography references, preamble and
format info. The files that contain body text then will look like
    % ... Text body
and can be compiled without any altering. -- The \project command keeps
track of it. The idea is that after a new file has been added to the
project, main.tex is compiled first once in order to create the file
main.aux, after which the subfile compilations can use the \project{main}
command to look into this aux file.

  One can also have several "submain" files. For example, if only file2.tex
and file5.tex should be compiled out of a larger set, one would prepare a
    \input file2.tex
    \input file5.tex
So it is possible to work with several subfile constellations.

  (This idea cannot be done without altering the LaTeX format source file.)

-- I should also note that if one uses only one aux file, then the file
where the labels are should perhaps be written to the aux file, that is
instead of writing
one should write
if the label is in the file "intro.tex".

-- Speaking about the contents of the aux files, I think one should be able
to write style info to these labels: This shows up, for example, if you
want to distinguish between equation numbering "(1.2)" and section
numbering "1.2" (without parenthesizes): The labels should then be
so that \ref can directly produce the correct output. Perhaps the type of
the label should be written instead, like

  Hans Aberg
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