On 25-10-2011 11:26, Mojca Miklavec wrote:
On Mon, Oct 24, 2011 at 20:41, Hans Hagen<pra...@wxs.nl> 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:" ...
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