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Mailing list for the LaTeX3 project <[log in to unmask]>
Hans Aberg <[log in to unmask]>
Sun, 30 Jan 2000 00:01:21 +0100
Mailing list for the LaTeX3 project <[log in to unmask]>
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I think that the LaTeX Pascal style "preamble", forcing certain stuff to be
entered before the \begin{document}, must be changed. The problem arises
when one wants to join several documents together, say in a journal.

On the level of implementation, the command \document that \begin{document}
executes cancels the \begingroup that \begin{...} always executes. However,
when I worked on the "environments with hooks", I discovered one cannot
allow for an environment which does not have this \begingroup ... \endgroup
locality, because it will screw up the local variables needed in order how
keep track of how the environments stack up. -- So, in particular, these
more advanced environments structures do not work with the old "document"
environment (which really isn't an environment, but only faked to make it
look like one to the user).

On the semantic level, if one should be able to stack up programs in
libraries, this Pascal idea of LaTeX seems wrong. Instead one should go
with the style of languages such as C++ and Java, which does not have it.

So this idea of LaTeX with a preamble seems simply wrong from the semantic
point of view. I think it should be changed somehow, so that one can add
environments  above the "document" level.

  Hans Aberg