Re: [NTG-context] How do I test for empty labeltext?
On Tue, 25 Oct 2011, Mojca Miklavec wrote: you can try \doiftextelse instead Thank you very much. This works fine. This should probably be added to http://wiki.contextgarden.net/System_Macros/Branches_and_Decisions at least (possibly to reference next to labels as well), but I'm not sure how to describe it. IIRC, there is some explanation in the source file (supp-box or pack-box, not sure which one). Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! 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 ___
Re: [NTG-context] How do I test for empty labeltext?
On 25-10-2011 11:26, Mojca Miklavec wrote:
On Mon, Oct 24, 2011 at 20:41, Hans Hagen wrote:
On 24-10-2011 19:41, Mojca Miklavec wrote:
Hello,
The following code
\setuplabeltext[test=]
test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
doesn't work as intended for the reasons that I approximately
understand (not exactly, but I understand that there might be a lot of
weird stuff returned when I ask for labeltext). However I have no idea
how to check if text is empty or not.
As an exception :) :) :), MKIV hints should be highly appreciated and
enough for this particular application.
an empty test is always somewhat special as there can be an unexpandable
macro inside that eventually expands to nothing
you can try \doiftextelse instead
Thank you very much. This works fine.
This should probably be added to
http://wiki.contextgarden.net/System_Macros/Branches_and_Decisions
at least (possibly to reference next to labels as well), but I'm not
sure how to describe it.
"If you want to know if some macro provides some typeset content you can
use the following helper macro:" ...
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
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Re: [NTG-context] How do I test for empty labeltext?
On Mon, Oct 24, 2011 at 20:41, Hans Hagen wrote:
> On 24-10-2011 19:41, Mojca Miklavec wrote:
>>
>> Hello,
>>
>> The following code
>>
>> \setuplabeltext[test=]
>> test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
>>
>> doesn't work as intended for the reasons that I approximately
>> understand (not exactly, but I understand that there might be a lot of
>> weird stuff returned when I ask for labeltext). However I have no idea
>> how to check if text is empty or not.
>>
>> As an exception :) :) :), MKIV hints should be highly appreciated and
>> enough for this particular application.
>
> an empty test is always somewhat special as there can be an unexpandable
> macro inside that eventually expands to nothing
>
> you can try \doiftextelse instead
Thank you very much. This works fine.
This should probably be added to
http://wiki.contextgarden.net/System_Macros/Branches_and_Decisions
at least (possibly to reference next to labels as well), but I'm not
sure how to describe it.
Mojca
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Re: [NTG-context] How do I test for empty labeltext?
On 24-10-2011 19:41, Mojca Miklavec wrote:
Hello,
The following code
\setuplabeltext[test=]
test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
doesn't work as intended for the reasons that I approximately
understand (not exactly, but I understand that there might be a lot of
weird stuff returned when I ask for labeltext). However I have no idea
how to check if text is empty or not.
As an exception :) :) :), MKIV hints should be highly appreciated and
enough for this particular application.
an empty test is always somewhat special as there can be an unexpandable
macro inside that eventually expands to nothing
you can try \doiftextelse instead
-
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | voip: 087 875 68 74 | www.pragma-ade.com
| www.pragma-pod.nl
-
___
If your question is of interest to others as well, please add an entry to the
Wiki!
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
___
[NTG-context] How do I test for empty labeltext?
Hello,
The following code
\setuplabeltext[test=]
test is \doifemptyelse{\labeltext{test}}{empty}{not empty}
doesn't work as intended for the reasons that I approximately
understand (not exactly, but I understand that there might be a lot of
weird stuff returned when I ask for labeltext). However I have no idea
how to check if text is empty or not.
As an exception :) :) :), MKIV hints should be highly appreciated and
enough for this particular application.
Mojca
PS: the extended example looks approximately as follows:
\def\document#1#2{
\setuplabeltext[name={{#1}},company={{#2}}]
\startstandardmakeup
\setups{content}
\setups{decoration}
\stopstandardmakeup
}
\startsetups content
This is for \labeltext{name}%
\doifemptyelse{\labeltext{company}}{.}{, working for \labeltext{company}.}
\stopsetups
I have no problem changing the complete code and I can already find a
workaround by defining some new "if" inside definition of \document,
but I'm still slightly curious to know how to test for existence of a
label. The sources contain
definelabels("setuplabeltext", data.texts, true)
and it is not too clear to me how to decrypt the rest with too much pain.
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