Am 04.11.2009 um 15:10 schrieb Oliver Buerschaper:
how can I check whether a macro I defined is actually expanded
into what I intended? For example, if I define
\define[2]\Test{#2, {\it #1}}
is there a (Lua?) function like
check(\Test{Hello}{world}, string)
that would return true for string = "world, {\it Hello}" and false
otherwise? If the macro is a bit more complicated than this I
usually get caught by a mistake rather quickly ... so a quick
check would be very handy for me.
You can check the content in ConTeXt itself.
\define[2]\Test
{\doifelse{#1}{world}{\writedirect{Test \#1: true}}{\writedirect
{Test \#1: false}}%
\doifelse{#2}{Hello}{\writedirect{Test \#2: true}}{\writedirect
{Test \#2: false}}%
#2, {\it#1}}
This is perfect if the arguments of \Test are fixed once and for all.
But actually I'd like to get something different ... (perhaps I
shouldn't have called the macro \Test but rather
\MyMysteriousMacro :-). Suppose I know what the output of this macro
(after expansion) should yield for *various* inputs. Now I just want
to check whether the macro really does what I expect it to do. For
example:
bool1 = check(\MyMysteriousMacro{Hello}{world}, "world, {\it Hello}")
bool2 = check(\MyMysteriousMacro{Wolfgang}{How are you}, "How are
you, {\it Wolfgang}")
etc.
Usually the macro would typeset something but here I'd just like
this comparison with the supplied string (without anything ending up
on paper).
Like this?
\newconditional\MysteriousOne
\newconditional\MysteriousTwo
\letempty\MysteriousListOne
\letempty\MysteriousListTwo
\definecomplexorsimple\MyMysteriousMacro
\def\complexMyMysteriousMacro[#1]#2#3%
{\doifelse{#1}{list}
{\appendtocommalist{#2}\MysteriousListOne
\appendtocommalist{#3}\MysteriousListTwo}%
{\simpleMyMysteriousMacro{#2}{#3}}}
\def\simpleMyMysteriousMacro#1#2%
{\setfalse\MysteriousOne
\setfalse\MysteriousTwo
\ExpandFirstAfter\doifinset{#1}\MysteriousListOne{\settrue
\MysteriousOne}%
\ExpandFirstAfter\doifinset{#2}\MysteriousListTwo{\settrue
\MysteriousTwo}%
\ifconditional\MysteriousOne\ifconditional\MysteriousTwo
#1, {\it#2}%
\fi\fi}
\MyMysteriousMacro[list]{world}{Hello}
\MyMysteriousMacro[list]{Wolfgang}{how are you}
\starttext
\MyMysteriousMacro{Hello}{world}
\MyMysteriousMacro{Wolfgang}{how are you}
\stoptext
Wolfgang
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