From: "Géry Ogam" <maggyero@gmail.com>
To: ntg-context@ntg.nl
Subject: How to test the emptyness of a variable?
Date: Thu, 7 Nov 2013 18:45:06 +0100 [thread overview]
Message-ID: <CAJ2CwZ21t8vMBr-6ctrX3V+q+PUOT2-3Lsapwiev9_4PDLFttg@mail.gmail.com> (raw)
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> I'm sure there is also a "cleaner" TeX way, but I'm not experienced
enough for that.
I think you misunderstood my issue: your Lua way does the same thing than
my TeX way: it displays:
ONE Cool
2 Cat
3 Mouse
but that is NOT what I want. What I want is:
1 Cool
2 Cat
3 Mouse
So I need to check if the chapter label has been set empty or not by the
user, because it is not empty (let's say the user chose the string
"CHAPTER~" for the chapter label) I want to display this:
CHAPTER ONE Cool
CHAPTER 2 Cat
CHAPTER 3 Mouse
The way to do that is to check if the variable \currentstructurelabel is
empty, so the code must be:
\define[1]
\MyCommand{\doifelse{\currentsectioncountervalue}{1}{\doifnotemptyelse{\currentstructurelabel}{ONE}{#1}}{#1}}
\setuphead[chapter][deepnumbercommand=\MyCommand]
\starttext
\setuplabeltext[chapter=CHAPTER~]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
\starttext
\setuplabeltext[chapter=]
\chapter{Cool}
\chapter{Cat}
\chapter{Mouse}
\stoptext
But the problem is that in the second case, even if the chapter label is
set empty the command \doifnotemptyelse{\currentstructurelabel} thinks the
variable \currentstructurelabel is not empty. So there must be something
invisible in it, like a strut or something.
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next reply other threads:[~2013-11-07 17:45 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-07 17:45 Géry Ogam [this message]
2013-11-09 19:55 ` Aditya Mahajan
-- strict thread matches above, loose matches on Subject: below --
2013-11-10 16:32 Géry Ogam
2013-11-05 21:56 Géry Ogam
2013-11-07 12:21 ` Procházka Lukáš Ing. - Pontex s. r. o.
2013-11-05 12:41 Géry Ogam
2013-11-04 23:42 Géry Ogam
2013-11-05 8:29 ` Hans Hagen
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