[NTG-context] expansion and variables

[NTG-context] expansion and variables

[Henning Hraban Ramm]

Something’s wrong with my code.
I’ll try to keep a status to output a certain marker only the first time 
after a change. With the code below I get it never.

I guess it’s an expansion problem again, but I didn’t find the right 
places for \expanded – if I use it in front of every \getvariable, I get 
the output every time.

Please help…
Hraban



\setvariable{Thing}{Status}{1}
\setvariable{Thing}{PreviousStatus}{0}

\define[1]\startThing{
   \setvariable{Thing}{PreviousStatus}{\getvariable{Thing}{Status}}
   \setvariable{Thing}{Status}{#1}
   <<< %
 
\doifnot{\getvariable{Thing}{Status}}{\getvariable{Thing}{PreviousStatus}}{%
     \bold{\getvariable{Thing}{Status}}%
   }%
}

\def\stopThing{>>>\par}

\starttext

\startThing{A} a \stopThing
\startThing{B} b \stopThing
\startThing{A} c \stopThing
\startThing{C} d \stopThing
\startThing{C} e \stopThing
\startThing{A} f \stopThing
\startThing{A} g \stopThing
\startThing{A} h \stopThing

\stoptext
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