getmarking and empty chapter number

getmarking and empty chapter number

[Oliver Buerschaper]

Hi all,

I'm just trying to wrap my mind around why the following doesn't work as I expect:

--
\setupheadertexts
	[]
	[{\doifsomething{\getmarking[sectionnumber]}{\getmarking[sectionnumber]\enskip}\getmarking[section]}]
	[{\doifsomething{\getmarking[chapternumber]}{\getmarking[chapternumber]\enskip}\getmarking[chapter]}]
	[]
--

When this encounters an unnumbered \startchapter (say in the front matter) then this \doifsomething should detect this void and in particular not insert the \enskip. For some reason the space ends up in the PDF nevertheless :-(

Any ideas?

Many thanks,
Oliver
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___________________________________________________________________________________

Re: getmarking and empty chapter number

[Aditya Mahajan]

On Mon, 23 May 2011, Oliver Buerschaper wrote:

> Hi all,
>
> I'm just trying to wrap my mind around why the following doesn't work as I expect:
>
> --
> \setupheadertexts
> 	[]
> 	[{\doifsomething{\getmarking[sectionnumber]}{\getmarking[sectionnumber]\enskip}\getmarking[section]}]
> 	[{\doifsomething{\getmarking[chapternumber]}{\getmarking[chapternumber]\enskip}\getmarking[chapter]}]
> 	[]
> --
>
> When this encounters an unnumbered \startchapter (say in the front 
> matter) then this \doifsomething should detect this void and in 
> particular not insert the \enskip. For some reason the space ends up in 
> the PDF nevertheless :-(
>
> Any ideas?

From supp-box.mkiv:

%D \macros
%D   {doiftextelse, doiftext}
%D
%D When \type {\doifelse} cum suis hopelessly fail, for
%D instance because we pass data, we can fall back on the next
%D macro:
%D
%D \starttyping
%D \doiftextelse {data} {then branch} {else branch}
%D \doiftext     {data} {then branch}
%D \stoptyping

Aditya
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webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: getmarking and empty chapter number

[Oliver Buerschaper]

> %D \macros
> %D   {doiftextelse, doiftext}
> %D
> %D When \type {\doifelse} cum suis hopelessly fail, for
> %D instance because we pass data, we can fall back on the next
> %D macro:
> %D
> %D \starttyping
> %D \doiftextelse {data} {then branch} {else branch}
> %D \doiftext     {data} {then branch}
> %D \stoptyping

Works neatly! Thanks a lot.

Oliver
___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage  : http://www.pragma-ade.nl / http://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________