[Problem] level=*dim parameter for trees in plain TeX

[Denis Girou]

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  Michael Daniels <daniels at ling.ohio-state.edu> report to me some weeks ago
that a correction I had proposed last autumn for a problem he submitted at
this time was inefficient. This problem concern only TeX users, not LaTeX
ones (as in this case the management of the auxiliary file is different).

  * 99/10/28 pst-tree.tex (97 patch 5): A *value for the levelsep parameter
doesn't work in plain TeX, as the auxiliary unit file used to write temporary
informations is not defined.
(reported by Michael W. Daniels <daniels at ling.ohio-state.edu>)

  Unfortunately, this is true and was due to my bad testing of the correction
(in fact, my test case was not adequate, so I did not saw that the problem was
still alive...).

  I hope that this one will be better...:

  * 00/04/26 pst-tree.tex (97 patch 6): A *value for the levelsep parameter
doesn't work in plain TeX, as the auxiliary unit file used to write temporary
informations is not defined (replace the inefficient patch 5 for the same
problem).
(reported by Michael W. Daniels <daniels at ling.ohio-state.edu>)


  Remove the patch 5:

% DG/SR modification begin - October 28, 1999 - Patch 5 - For plain TeX
\ifx\@undefined\@auxout\newwrite\@auxout\fi
% DG/SR modification end

then add:

% DG/SR modification begin - Apr. 26, 2000 - Patch 6 - For plain TeX
%\input \jobname.pst
\catcode`\@=11
\input \jobname.pst
\catcode`\@=\TheAtCode
% DG/SR modification end

...

% DG/SR modification begin - Apr. 26, 2000 - Patch 6 - For plain TeX
%\immediate\write\@auxout{%
\immediate\write\pstree at auxout{%
% DG/SR modification end

...

% DG/SR modification begin - Apr. 26, 2000 - Patch 6 - For plain TeX
%\immediate\write\@auxout{%
\immediate\write\pstree at auxout{%
% DG/SR modification end


  My test case is:

\input pst-tree

\psset{levelsep=*2}

\pstree{\Tc{3pt}}
       {\pstree{\Tc{30pt}}
               {\Tc{30pt}}
        \pstree{\Tc{3pt}}
               {\Tc{3pt}}}

\bye

D.G.

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