[tex-live] Ignoring portion of LaTeX code; the \par problem.

[Reinhard Kotucha]

On 6 April 2010 Heiko Oberdiek wrote:

 > % \begin{document} opens a group via \begingroup

No, it doesn't.  The opposite is the case.

\begin opens a new group with \begingroup and \document closes it with
\endgroup.  LaTeX is doing this deliberately in order to avoid an
unnecessary nesting level which probably loads the save stack.

\begin{document} looks like an ordinary environment but it isn't.

Please consult the LaTeX sources.  In latex.ltx you'll find a line 

   \def\document{\endgroup

Regards,
  Reinhard

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