right and left alignment in header w/ linebreak sign

* right and left alignment in header w/ linebreak sign
@ 2011-07-17 15:48 Peter Schorsch
  2011-07-17 16:37 ` Wolfgang Schuster
  0 siblings, 1 reply; 2+ messages in thread
From: Peter Schorsch @ 2011-07-17 15:48 UTC (permalink / raw)
  To: ntg-context

Hi,

I am trying to have the header text aligned at the outer border of
margin. 

At the moment I have 

	\setupheadertexts[margin][][\rightaligned{\CurrentChapter}][\leftaligned{\CurrentChapter}][]

and in the text

	\chapter{A very, very long long heading}

and it works like I expect it. But as soon I have a linebreak in the
heading (via \\) I get following error message:

	structure       > sectioning > chapter @ level 2 : 0.1 -> A
	very,\\very long long title ! Extra }, or forgotten \endgroup.

	system          > tex > error on line 1 in file
	context-test-struktur3.tex: Extra }, or forgotten  ...

As soon I remove the alignment in the header also the chapter with the
linebreak sign works - but of course I get then a wrong alignment.

How can I make that the header works with the correct alignment and
linebreaks in the heading? (header should be still without linebreaks)

Thanks in advance!

Complete example:
-------------8<----------------------------

% define margins
\definelayout[WithMarginnotes][location={duplex},grid=no,topspace=3cm,height=24cm,backspace=3cm,cutspace=0cm,leftmargin=1cm,leftmargindistance=0.4cm,width=12.1cm,rightmargindistance=0.4cm,rightmargin=3.5cm]
\setuplayout[WithMarginnotes]
\setuppagenumbering[alternative=doublesided,location=]
\showframe

% define header
\define\CurrentChapter%
	{\doiftextelse {\getmarking[chapternumber]}%
		{\getmarking[chapternumber].~\getmarking[chapter]}%
		{\getmarking[chapter]}%
	}
\setupheadertexts[margin][][\rightaligned{\CurrentChapter}][\leftaligned{\CurrentChapter}][]%

%
\starttext
\completecontent[criterium=all]
\chapter{A very,\\very long long heading}
\chapter{A very, very long long heading}
\chapter{End}
\stoptext
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