Help:Parameter default: Difference between revisions

Revision as of 01:52, 10 March 2023

Revision as of 01:56, 10 March 2023

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{{Tim|if}} contains:

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<presyntaxhighlight lang="text">{{{else{{{test|}}}|{{{test{{{test|}}}|{{{then|}}}}}}}}}</presyntaxhighlight>

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or in short form:

<syntaxhighlight lang="moin">[ else[test|] | [ test[test|] | [then|] ] ]</syntaxhighlight>

If [test] is defined this reduces to

<syntaxhighlight lang="moin">[ else[test] | [ test[test] | [then|] ] ]</syntaxhighlight>

For test equal to null this reduces to [else|]; otherwise, if no parameter name starting with "test" or "else" applies except these themselves, then this reduces to [then|].

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If [test] is undefined we get

<syntaxhighlight lang="moin">[ else | [then|] ]</syntaxhighlight>

==Last-but technique==