page[no] not working?

page[no] not working?

[Matthijs Kooijman]

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Hi all,

I've come to understand taht using the \page[no] command should prevent a
pagebreak at that particular spot whenever possible. However, this seems to be
not working for me. My actual problem is with a \startframed directly after a
description "header", but the problem is easily reproduced with the below
example (for MkII, replace the 25cm with 20cm). The \dontleavehmod was needed
to make the \blank work...


  \starttext
  \dontleavehmode
  \blank[25cm]
  A
  \page[no]
  \startframedtext
  H
  \stopframedtext
  \stoptext


This example generates the "A" at the bottom of the first page, with the boxed
H on the next page, putting a page break exactly where the page[no] is. Is it
broken, or am I missing an important detail about how page[no] works?

I've also tried 

  \defineblankmethod [nobreak] {\nobreak}
  \blank[nobreak,line]

and some variations as suggested by Wolfgang (IIRC) in some thread from 2008,
but that failed with "missing number, treated as zero" for me.

Gr.

Matthijs

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Re: page[no] not working?

[Wolfgang Schuster]

Am 07.12.2009 um 22:55 schrieb Matthijs Kooijman:

> Hi all,
> 
> I've come to understand taht using the \page[no] command should prevent a
> pagebreak at that particular spot whenever possible. However, this seems to be
> not working for me. My actual problem is with a \startframed directly after a
> description "header", but the problem is easily reproduced with the below
> example (for MkII, replace the 25cm with 20cm). The \dontleavehmod was needed
> to make the \blank work...

As you don't provide a example with a description where you have the problem
I can't make a test but this could work in MkIV

\setupdescriptions[...][inbetween={\blank[samepage,line]}]

Wolfgang

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Re: page[no] not working?

[Matthijs Kooijman]

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Hi Wolfgang,

> As you don't provide a example with a description where you have the problem
> I can't make a test but this could work in MkIV
I reckoned that the \page[no] command by itself was already broken, so I first
want to fix that before making things more complicated (like doing stuff with
before= or inbetween=).

> \setupdescriptions[...][inbetween={\blank[samepage,line]}]
This isn't exactly what I need, since the page break occurs between the header
and the body of the description (the boxed block is inside the description).
Or is inbetween exactly where that should end up?

However, using your \blank command directly does work. I've now put it in the
before= of my typing environment and that works as well. Thanks for this!

However, I'm still surprised that the \page[no] command, which is documented
to supress page breaks, does not do anything, while I need to insert some
magical blank as well. Should \page[no] be documented as broken?

Gr.

Matthijs

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Re: page[no] not working?

[Wolfgang Schuster]

Am 08.12.2009 um 09:27 schrieb Matthijs Kooijman:

> Hi Wolfgang,
> 
>> As you don't provide a example with a description where you have the problem
>> I can't make a test but this could work in MkIV
> I reckoned that the \page[no] command by itself was already broken, so I first
> want to fix that before making things more complicated (like doing stuff with
> before= or inbetween=).

\page[no] did work but only when you use it in the correct way.

\starttext
\blank[force,20cm]
A

\page[no]
\startframedtext
H
\stopframedtext
\stoptext

or

\starttext
\blank[force,20cm]
A
\par\page[no]
\startframedtext
H
\stopframedtext
\stoptext

>> \setupdescriptions[...][inbetween={\blank[samepage,line]}]
> This isn't exactly what I need, since the page break occurs between the header
> and the body of the description (the boxed block is inside the description).
> Or is inbetween exactly where that should end up?

As you're unwilling to show a example I can't give a concrete answer.

> However, using your \blank command directly does work. I've now put it in the
> before= of my typing environment and that works as well. Thanks for this!

\starttext
\blank[force,20cm]
A
\blank[samepage,line]
\startframedtext
H
\stopframedtext
\stoptext

Wolfgang

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Re: page[no] not working?

[Matthijs Kooijman]

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Hi Wolfgang,

> \page[no] did work but only when you use it in the correct way.
> <snip exapmles>

Aha, page[no] only works directly after a paragraph break. I haven't seen that
documented anywhere. I'll put it up on the \page reference page. Is "only
after a paragraph break" the right usage instructions, or is it more
complicated than that?

> As you're unwilling to show a example I can't give a concrete answer.
I showed a reduced example, which showed the problem I was having exactly. I
could have sent you my entire document consisting of many files, but that
wouldn't be too useful I guess. I appreciate your attempts to provide a
complete solution for my entire problem, but I have enough clue to fit in a
working \page[no] into the right setup commands, if only I had a working
\page[no] command :-)

Fortunately, you've now provided me with two working commands (\par\page[no]
and \blank[samepage,line]), so I managed to make my document look pretty! If
you could only answer my first question above, then I'll improve the \page
documentation.

Thanks!

Matthijs

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Re: page[no] not working?

[luigi scarso]

On Tue, Dec 8, 2009 at 10:14 AM, Matthijs Kooijman <matthijs@stdin.nl> wrote:
> Hi Wolfgang,
>
>> \page[no] did work but only when you use it in the correct way.
>> <snip exapmles>
>
> Aha, page[no] only works directly after a paragraph break. I haven't seen that
> documented anywhere. I'll put it up on the \page reference page. Is "only
> after a paragraph break" the right usage instructions, or is it more
> complicated than that?
>
>> As you're unwilling to show a example I can't give a concrete answer.
> I showed a reduced example, which showed the problem I was having exactly. I
> could have sent you my entire document consisting of many files, but that
> wouldn't be too useful I guess. I appreciate your attempts to provide a
> complete solution for my entire problem, but I have enough clue to fit in a
> working \page[no] into the right setup commands, if only I had a working
> \page[no] command :-)
>
> Fortunately, you've now provided me with two working commands (\par\page[no]
> and \blank[samepage,line]), so I managed to make my document look pretty! If
> you could only answer my first question above, then I'll improve the \page
> documentation.
>
> Thanks!
>
> Matthijs



\showframe
\starttext
\blank[force,20.5cm]
\ruledvbox{A}%
\nobreak
\vskip-\lineheight
\nobreak
\startframedtext
H
\stopframedtext
\stoptext


-- 
luigi
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Re: page[no] not working?

[Wolfgang Schuster]

Am 08.12.2009 um 10:14 schrieb Matthijs Kooijman:

> Aha, page[no] only works directly after a paragraph break. I haven't seen that
> documented anywhere. I'll put it up on the \page reference page. Is "only
> after a paragraph break" the right usage instructions, or is it more
> complicated than that?

I think the better answer is that you have to call it in vertical mode
where you go with \par or a empty line.

>> As you're unwilling to show a example I can't give a concrete answer.
> I showed a reduced example, which showed the problem I was having exactly. I
> could have sent you my entire document consisting of many files, but that
> wouldn't be too useful I guess. I appreciate your attempts to provide a
> complete solution for my entire problem, but I have enough clue to fit in a
> working \page[no] into the right setup commands, if only I had a working
> \page[no] command :-)

You wrote:

My actual problem is with a \startframed directly after a description "header" ...

which is for me

\startdescription{...}
\startframed
...
\stopframed
...

and what you showed is something different and putting \page[no] between
\startdescription and \startframed is not what I would suggest.

Wolfgang

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