Problem with \nobreak

Problem with \nobreak

[Slawek Zak]

I tried to define my own sectioning command, like this:

  \setuphead[Section][style=cap,textcommand=\underbar,after=\nobreak]

I don't know why, but after one of so defined `Sections' the page is
broken. Can I somehow prevent this?

/S

Re: Problem with \nobreak

[Hans Hagen]

At 10:06 PM 10/17/00 +0200, Slawek Zak wrote:
>I tried to define my own sectioning command, like this:
>
>  \setuphead[Section][style=cap,textcommand=\underbar,after=\nobreak]
>
>I don't know why, but after one of so defined `Sections' the page is
>broken. Can I somehow prevent this?

\setuphead[Section][section][....]

you need a parent sectioning id, and: no \nobeak! ! ! since context already
uses a weighted system of not breaking after headers [so that successive
ones all move to the next page]

Hans
-------------------------------------------------------------------------
                                                  Hans Hagen | PRAGMA ADE
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: Problem with \nobreak

[Slawek Zak]

On Tue, Oct 17, 2000 at 11:35:29PM +0200, Hans Hagen wrote:
> At 10:06 PM 10/17/00 +0200, Slawek Zak wrote:
> >I tried to define my own sectioning command, like this:
> >
> >  \setuphead[Section][style=cap,textcommand=\underbar,after=\nobreak]
> >
> >I don't know why, but after one of so defined `Sections' the page is
> >broken. Can I somehow prevent this?
> 
> \setuphead[Section][section][....]

Hmm. The above doesn't work. It's not mentioned in the manual, the
english one, that \setuphead has 3 arguments and it seems not to have
3.

Full definition of Section is now:

\definehead[Section][subject]
\setuphead[Section][style=cap,textcommand=\underbar]

I use subject to avoid numbering (it's the same as section in other
respects, right?), and to have subpages. If I change subject to
section it's still the same (but the numbers of course).

> you need a parent sectioning id, and: no \nobeak! ! ! since context already
> uses a weighted system of not breaking after headers [so that successive
> ones all move to the next page]

Great to hear that. Is the 3-argument setuphead available only in
beta?

/S

Re: Problem with \nobreak

[Hans Hagen]

At 06:51 PM 10/18/00 +0200, Slawek Zak wrote:
>On Tue, Oct 17, 2000 at 11:35:29PM +0200, Hans Hagen wrote:
>> At 10:06 PM 10/17/00 +0200, Slawek Zak wrote:
>> >I tried to define my own sectioning command, like this:
>> >
>> >  \setuphead[Section][style=cap,textcommand=\underbar,after=\nobreak]
>> >
>> >I don't know why, but after one of so defined `Sections' the page is
>> >broken. Can I somehow prevent this?
>> 
>> \setuphead[Section][section][....]
>
>Hmm. The above doesn't work. It's not mentioned in the manual, the
>english one, that \setuphead has 3 arguments and it seems not to have
>3.

Sorry, my fault. I was thinking of a definition. 

>Full definition of Section is now:
>
>\definehead[Section][subject]
>\setuphead[Section][style=cap,textcommand=\underbar]

this is ok. 

>I use subject to avoid numbering (it's the same as section in other
>respects, right?), and to have subpages. If I change subject to
>section it's still the same (but the numbers of course).
>
>> you need a parent sectioning id, and: no \nobeak! ! ! since context already
>> uses a weighted system of not breaking after headers [so that successive
>> ones all move to the next page]
>
>Great to hear that. Is the 3-argument setuphead available only in
>beta?

no, it's two argument, but actually \definehead is a three one. 

Hans
-------------------------------------------------------------------------
                                                  Hans Hagen | PRAGMA ADE
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: Problem with \nobreak

[Slawek Zak]

On Thu, Oct 19, 2000 at 11:12:37AM +0200, Hans Hagen wrote:
> >\definehead[Section][subject]
> >\setuphead[Section][style=cap,textcommand=\underbar]
> 
> this is ok. 

Well... it is not, as I have one `Section' that has title at the
bottom of a page.

> no, it's two argument, but actually \definehead is a three one. 

cont-enp.pdf doesn't mention the third argument.

/S
-- 
* Suavek Zak
* email: zaks@im.pw.edu.pl   voice: +48 (0) 22 674 66 79
* PGP v2.3: 2048/9A7CBF71,   finger://zaks@prioris.im.pw.edu.pl

Re: Problem with \nobreak

[Hans Hagen]

At 06:15 PM 10/19/00 +0200, Slawek Zak wrote:
>On Thu, Oct 19, 2000 at 11:12:37AM +0200, Hans Hagen wrote:
>> >\definehead[Section][subject]
>> >\setuphead[Section][style=cap,textcommand=\underbar]
>> 
>> this is ok. 
>
>Well... it is not, as I have one `Section' that has title at the
>bottom of a page.

Then maybe the first command after that is goodbreaking? What is the first
command after the section header? 

Hans
-------------------------------------------------------------------------
                                                  Hans Hagen | PRAGMA ADE
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: Problem with \nobreak

[Hans Hagen]

At 06:15 PM 10/19/00 +0200, Slawek Zak wrote:

>cont-enp.pdf doesn't mention the third argument.

There are many hidden secrets, some are there to catch errors or wrong
usage, i must admit. 

Hans
-------------------------------------------------------------------------
                                                  Hans Hagen | PRAGMA ADE
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: Problem with \nobreak

[Slawek Zak]

On Thu, Oct 19, 2000 at 06:25:09PM +0200, Hans Hagen wrote:
> At 06:15 PM 10/19/00 +0200, Slawek Zak wrote:
> >On Thu, Oct 19, 2000 at 11:12:37AM +0200, Hans Hagen wrote:
> >> >\definehead[Section][subject]
> >> >\setuphead[Section][style=cap,textcommand=\underbar]
> >> 
> >> this is ok. 
> >
> >Well... it is not, as I have one `Section' that has title at the
> >bottom of a page.
> 
> Then maybe the first command after that is goodbreaking? What is the first
> command after the section header? 

It's \startitemize and then \item's 

/S

Re: Problem with \nobreak

[Hans Hagen]

At 07:34 PM 10/19/00 +0200, Slawek Zak wrote:
>On Thu, Oct 19, 2000 at 06:25:09PM +0200, Hans Hagen wrote:
>> At 06:15 PM 10/19/00 +0200, Slawek Zak wrote:
>> >On Thu, Oct 19, 2000 at 11:12:37AM +0200, Hans Hagen wrote:
>> >> >\definehead[Section][subject]
>> >> >\setuphead[Section][style=cap,textcommand=\underbar]
>> >> 
>> >> this is ok. 
>> >
>> >Well... it is not, as I have one `Section' that has title at the
>> >bottom of a page.
>> 
>> Then maybe the first command after that is goodbreaking? What is the first
>> command after the section header? 
>
>It's \startitemize and then \item's 

I guessed so, since that command prefers a new page. Actually itemize will
also prevent a break between the first two and last two items [second pass
optimization]. 

You may try: 

\startitemize[intro]

which will as good as possible prevent a break (or \page[no])

Hans
-------------------------------------------------------------------------
                                                  Hans Hagen | PRAGMA ADE
                      Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: +31 (0)38 477 53 69 | fax: +31 (0)38 477 53 74 | www.pragma-ade.com
-------------------------------------------------------------------------

Re: Problem with \nobreak

[Slawek Zak]

On Fri, Oct 20, 2000 at 09:37:43AM +0200, Hans Hagen wrote:
> >> Then maybe the first command after that is goodbreaking? What is the first
> >> command after the section header? 
> >
> >It's \startitemize and then \item's 
> 
> I guessed so, since that command prefers a new page. Actually itemize will
> also prevent a break between the first two and last two items [second pass
> optimization]. 
> 
> You may try: 
> 
> \startitemize[intro]

Now - that works just fine - thanks :)

/S