Re: (dsssl) Null Caracter

[Brandon Ibach <bibach@xxxxxxxxxxxxxx>]

Quoting Jose Waldemar <bohner@xxxxxxxxxxxxxxxx>:
> Hi Brandon.
> Thank you for help me.
> 
   No problem. :)  Of course, I'm shooting in the dark just like you,
but having spent a lot of time in the dark, I've gotten pretty good
night vision. ;)

> I tested your code.
> 
> >      (element simpara
> >        (if (string=? "" (data (current-node)))
> >            (make paragraph
> >              break-before: 'page
> >              (literal " "))
> >            (make paragraph
> >              (process-children))))
> >
> >    How is the "hidden character" that you had in mind different from a
> > character that makes no mark upon the page, like a space?  Playing
> > with control characters (such as the null, or 0) that are outside of
> > the normal range dealt with in SGML is likely to cause problems.
> 
> And I wrote a similar code.
> 
>  (element para
>        (if (string=? "" (data (current-node)))   ;;IF I HAVE <para></para>
>              (make simple-page-sequence
>              (make paragraph
>              break-before: 'page
>                (literal " ")))			 ;;THE QUESTION IS HERE
>            (make paragraph	                 ;;ELSE
>                first-line-start-indent: 1cm
>                (process-children))))
> 
   I don't think you actually need the simple-page-sequence in there,
and it probably isn't actually legal, though the backends may allow
it, as this object isn't meant to be nestable (inside another
simple-page-sequence, that is).

> If I use (literal " ") or (literal ""), and I have <para></para>
>    the conditional don't work.
> 
> If I use (literal "."), "." or another caracter, and I have <para></para>
> the conditional work very well, and the dsssl insert a page who have only
> a caractere inside "".
> 
> If I can insert (literal " "), I can insert a
> blank page in my document.
> But I think it's not possible.
> 
> Maybe, if inside " ", I insert a hidden caracter, or I represent a hidden
> caracter, I will can insert a blank page in my document.
> 
   Hmm... looks like the formatter is trying to be "smart" by not
doing the page break when there's only whitespace in there.  Maybe try
(literal "\U-00A0;"), which would be a non-breaking space.  It won't
print anything on the paper, but might still force the page break.

-Brandon :)

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