parameter setting

parameter setting

[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.

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?

Hans van der Meer



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Re: parameter setting

[Wolfgang Schuster]

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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wiki     : http://contextgarden.net
___________________________________________________________________________________

Re: parameter setting

[Meer, H. van der]

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On 16 jun. 2012, at 15:18, Wolfgang Schuster wrote:


You can try “\expdoifnot{\xmlatt{#1}{color}}{}{backgroundcolor=\xmlatt{#1}{color}}”
but I can’t say for sure without a example.


I tried that, but it makes no difference and the color does not appear:
mkiv-base.map} (virtual://buffer.embedded_x_table.1
check           > missing or ungrouped '=' after 'foregroundcolor=orange'

Hans van der Meer


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Re: parameter setting

[Wolfgang Schuster]

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Am 16.06.2012 um 16:04 schrieb Meer, H. van der:

> On 16 jun. 2012, at 15:18, Wolfgang Schuster wrote:
> 
>> You can try “\expdoifnot{\xmlatt{#1}{color}}{}{backgroundcolor=\xmlatt{#1}{color}}”
>> but I can’t say for sure without a example.
> 
> I tried that, but it makes no difference and the color does not appear:
> mkiv-base.map} (virtual://buffer.embedded_x_table.1
> check           > missing or ungrouped '=' after 'foregroundcolor=orange' 

Send a complete example!

Wolfgang


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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
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