[texhax] A question about \halign

[Rodolfo Medina]

Rodolfo Medina <rodolfo.medina at gmail.com>:

>> In plain TeX, I have the following problem:
>>
>> I have the following alignment:
>>
>>
>> \halign to \hsize{%
>>      \vtop{\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}
>>
>>
>> \bye
>> 
>> 
>> Now, I want that, when the first argument is very long and continues over a
>> second line, the second argument is put on the second line as well (in the
>> above example it is put on the first line, instead).



Dave Geering <dlgeering at gmail.com> writes:

> If you use \vbox instead of \vtop it will put bnbnbnbnb on the second
> line. Is that what you intended?




Donald Arseneau <asnd at triumf.ca> writes:

> Then use \vbox, not \vtop.



Yes, thanks for your help, that's fine.

But now, suppose that I want a third argument of the alignment to stay on the
first line, instead:


\halign to \hsize{%
      \quad\rm\ \ \ \ \llap{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}



\bye


I want that `\quad\rm\ \ \ \ \llap{1.2}\ ' stays on the first line and
`bnbnbnbn' on the second line.

Excuse that I'm asking too much!!

How can I achieve that?

Help very much appreciated: it's for the format of a table of content.

Thanks
Rodolfo