[texhax] One (more) question about \halign

[Rodolfo Medina]

Hi all.

In plain TeX, I have the following problem:

I have the following alignment (for a table of contents):


\halign to \hsize{%
        \rm\rlap{1.2}\ \ \ \ \ \ \ 
        \vbox{\parindent=0pt\hsize=105mm\hangindent 0em\strut%
              #\hfill\strut}%
      \tabskip=0cm plus20cm minus20cm&\hfil#\tabskip=0pt\cr
      bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla bla
      bla bla bla bla bla bla bla bla bla bla bla bla bla &bnbnbnbnb\cr}


Now, I want that, when the first argument is very long and continues over a
second line (as in the above example), then

       \rm\rlap{1.2}\ \ \ \ \ \ \

is put on the first line (in the above example it is put on the second line,
instead).

Can anybody help about this matter?  Once solved this, I want to put dot
leaders.

Thanks in advance
Rodolfo