Henning Hraban Ramm via ntg-context schrieb am 10.01.2022 um 09:52:
Am 09.01.22 um 16:03 schrieb Wolfgang Schuster via ntg-context:
Joel via ntg-context schrieb am 09.01.2022 um 15:16:
Is there a way for a macro to check the previous value of #1, the
last time that same macro was called?
To check is the current value differs from the last one you need a
temp macro where you store the current value at the end of your
command to check it in the next call.
Would it make more sense, or would it be “cleaner” to use a variable?
You can get rid of the temp variable before the command definition but
now you have to access it with a different method in \mymacro, below is
one way (LMTX only) but \setvariable and \getvariable work as well.
\define[1]\mymacro
{\iftok{#1}{\getvalue{previousmymacro}}%
same as last time
\else
it is different from last time
\fi
\setvalue{previousmymacro}{#1}}
Wolfgang
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