Re: [NTG-context] page-break after \section

2007-04-11 Thread Peter Münster
On Tue, 10 Apr 2007, Aditya Mahajan wrote:

 (Untested) Did you try:
 
 \startitemize[intro]
 
 AFAIU, intro prevents a page break before itemize.

Thanks, this works!
Cheers, Peter

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Re: [NTG-context] page-break after \section

2007-04-10 Thread Aditya Mahajan
On Tue, 20 Mar 2007, Peter Münster wrote:

 Hello,

 in the following example, there is a page-break after the second section
 title. \page[no] does not help.

 Is this normal or a bug?

 \starttext
 \section{bla}
 \dorecurse{36}{bla\par}
 \section{bla}
 \page[no]
 \startitemize
 \dorecurse{5}{\item bla}
 \stopitemize
 \stoptext


(Untested) Did you try:

\startitemize[intro]

AFAIU, intro prevents a page break before itemize.

Aditya
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Re: [NTG-context] page-break after \section

2007-03-22 Thread Hans Hagen
� wrote:
 On Wed, 21 Mar 2007, luigi scarso wrote:

   
 in the following example, there is a page-break after the second section
 title. \page[no] does not help.

 Is this normal or a bug?
   
 Normal, I believe
 

 Too bad. I think, there can be still some enhancements: in LaTeX, there
 is never a page break after a section header, but with ConTeXt there is
 sometimes by surprise...
   
well, it depends, if the next structure does a vskip of some testing 
then there can be a page break

there is no robust way to prevent this in current tex, at least nog when 
some spacing mechansism are used, ok, a penalty 1 may sometimes 
help, but even then, successive skips and such may interfere

also, vskip12pt \penalty vskip12pt ma not what you want (i.e. collapsing 
becomes tricky)

context sectioning has some prevent-break stuff

you can add a penalty 1 if you know what you're dealing with

Hans

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  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
 tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
 | www.pragma-pod.nl
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Re: [NTG-context] page-break after \section

2007-03-22 Thread Peter Münster
On Thu, 22 Mar 2007, Hans Hagen wrote:

 well, it depends, if the next structure does a vskip of some testing 
 then there can be a page break
 
 there is no robust way to prevent this in current tex, at least nog when 
 some spacing mechansism are used, ok, a penalty 1 may sometimes 
 help, but even then, successive skips and such may interfere

Thanks for your explanation!
Do you know, how the LaTeX people solved this problem? I've never had such
surprises with LaTeX.

 you can add a penalty 1 if you know what you're dealing with

Ok, I'll try it.

Cheers, Peter

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Re: [NTG-context] page-break after \section

2007-03-22 Thread Hans Hagen
� wrote:
 On Thu, 22 Mar 2007, Hans Hagen wrote:

   
 well, it depends, if the next structure does a vskip of some testing 
 then there can be a page break

 there is no robust way to prevent this in current tex, at least nog when 
 some spacing mechansism are used, ok, a penalty 1 may sometimes 
 help, but even then, successive skips and such may interfere
 

 Thanks for your explanation!
 Do you know, how the LaTeX people solved this problem? I've never had such
 surprises with LaTeX.
   
i dunno, but i remember problems with splits between chapter, section and 
subsection heads and context prohibits that; *any* tex where some construct 
introduces whitespace has this problem but i can imagine some tricky stuff with 
the otr involved (and even then there may be interference with preceding 
material); i do (did) observe that latex has a different spacing model (and 
interfering penalties may be a reason why sometimes spacing gets messed up); 

i will implement a second spacing model once luatex is available 

in tex, when one has a controlled situation, solutions are possible but context 
is rather configurable

\setuphead[section][after=\blank\pelanty1\relax] may help but also mess up 
spacing 

(esp floats are hard to interface with such things because they also look at 
the available space and currently don't look back; keep in mind that when 
looking back the content is already put in the mlv and ther ei sno knowledg 
ewhat is preceding the current structure 



Hans 


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 tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
 | www.pragma-pod.nl
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Re: [NTG-context] page-break after \section

2007-03-22 Thread Taco Hoekwater
Hans Hagen wrote:
 
 Thanks for your explanation! Do you know, how the LaTeX people
 solved this problem? I've never had such surprises with LaTeX.
 
 ...
 interference with preceding material); i do (did) observe that latex
 has a different spacing model (and interfering penalties may be a
 reason why sometimes spacing gets messed up);

LaTeX is pretty good in keeping section heads together with
the following material, but the tradeoff is that sometimes it
inserts massive amounts of whitespace on a page, because a section
head and a subsection head and the following first two paragraph
lines all appear after an automatically inserted pagebreak.

IIRC, it also makes float placements harder to predict.

Best wishes,
Taco
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Re: [NTG-context] page-break after \section

2007-03-20 Thread luigi scarso
On 3/20/07, Peter Münster [EMAIL PROTECTED] wrote:
 Hello,

 in the following example, there is a page-break after the second section
 title. \page[no] does not help.

 Is this normal or a bug?
Normal, I believe

 \starttext
 \section{bla}
 \dorecurse{36}{bla\par}
 \section{bla}
 \page[no]
 \startitemize
 \dorecurse{5}{\item bla}
 \stopitemize
 \stoptext

try this
%%
\showframe
\starttext
\section{bla}
\dorecurse{36}{bla\par}
\section{bla}
\page[no]
\startitemize
\dorecurse{5}{\item bla}
\stopitemize
\stoptext
%

and this
5
\showframe
\starttext
\section{bla}
\dorecurse{34}{bla\par} not 35 or 36 !
\section{bla}
\page[no]
\startitemize
\dorecurse{5}{\item bla}
\stopitemize
\stoptext
%%%

maybe some defaults spaces of \section

luigi
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