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Answer by Ulrike Fischer for xkeyval: how to use default key value?

\savekeys is the wrong command. What you want is\presetkeys{Mystuff}{foo,bar}{}The key foo will then be inserted at the start of the \setkeys list.

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Answer by egreg for xkeyval: how to use default key value?

The default value is used when you specify the key, but don't assign a value: \begin{myenv}[foo] will define \foo to what. Say\newenvironment{myenv}[1][]%{\setkeys{Mystuff}{foo,bar,#1}BEGIN \foo}{END...

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xkeyval: how to use default key value?

I am trying to use the xkeyval package to include key arguments in a new environment. It seems to work except for default values. Here's my best try so...

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