From: Wolfgang Schuster <schuster.wolfgang@googlemail.com>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: parameter setting
Date: Sat, 16 Jun 2012 15:18:11 +0200 [thread overview]
Message-ID: <F7421B16-07AF-4D96-86AD-1367E045B56C@googlemail.com> (raw)
In-Reply-To: <4E63CEE0-BC3A-4C66-91FB-DEF9FF197BE4@uva.nl>
Am 16.06.2012 um 14:11 schrieb Meer, H. van der:
> In order to be able to use attributes on xml-nodes freely, the following situations can arise:
>
> The foregroundcolor parameter gets a value:
> <node color="red"> correctly sets ..[foregroundcolor=\xmlatt{#1}{color}] color to red.
>
> However, in the next case the current foregroundcolor should be left as is, but reverts to black:
> <node> ..[foregroundcolor=] and is apparently reset to the general default.
When you write “foregroundcolor=” you apply *nothing* to the key and the last setting is changed.
> trying the following seemed the solution, but it does not work:
> ..[\doifnot{\xmlatt{#1}{color}}{\empty}{foregroundcolor=\xmlatt{#1}{color}}]
> giving in the log:
> {foregroundcolor=orange}' in line 16 (249>:)
> check > missing or ungrouped '=' after '\doifnot {}{}
>
> Putting the above \doif inside an \expanded{} does not alter the behaviour.
>
> How to accomplish leaving the parameter as is for an absent attribute?
You can try “\expdoifnot{\xmlatt{#1}{color}}{}{backgroundcolor=\xmlatt{#1}{color}}”
but I can’t say for sure without a example.
Wolfgang
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next prev parent reply other threads:[~2012-06-16 13:18 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-06-16 12:11 Meer, H. van der
2012-06-16 13:18 ` Wolfgang Schuster [this message]
2012-06-16 14:04 ` Meer, H. van der
2012-06-16 14:09 ` Wolfgang Schuster
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