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From: Wolfgang Schuster <schuster.wolfgang@gmail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: \setupheadnumber and zero
Date: Tue, 08 Sep 2015 21:10:51 +0200	[thread overview]
Message-ID: <55EF32BB.3070500@gmail.com> (raw)
In-Reply-To: <op.x34u10sztpjj8f@lpr>


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> Procházka Lukáš Ing. - Pontex s. r. o. <mailto:LPr@pontex.cz>
> 29. August 2015 16:11
> Hello,
>
> can a section head be generated with the number 0 (or less)?
>
> Sometimes I need to prepend a section while keeping existing section 
> head numbers...
>
> Example:
>
> ----
> \starttext
>   \setupheadnumber[chapter][-1]
>   \chapter{Ch0} % Getting "Ch0" instead of "0. Ch0"?
>   \chapter{Ch1}
> \stoptext
> ----
>
> Here, "0. Ch0" is not generated, the zero is not displayed; why?
You can't set a negative number for the start of the counter but you can 
change the appereance.

\defineexpandable[1]\PreviousNumber
   {\number\numexpr#1-1\relax}

\defineconversion[PreviousNumber][\PreviousNumber]

\defineconversionset[zerostart][n,PreviousNumber][n]

\setuphead[chapter,section][sectionconversionset=zerostart]

\starttext
\chapter{First chapter}
\chapter{Second chapter}
\stoptext

Wolfgang

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  reply	other threads:[~2015-09-08 19:10 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-08-29 14:11 Procházka Lukáš Ing. - Pontex s. r. o.
2015-09-08 19:10 ` Wolfgang Schuster [this message]
2015-09-09 11:25   ` Procházka Lukáš Ing. - Pontex s. r. o.

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