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Module:WikidataIB/doc
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=== Function emptyor === emptyor returns nil if its first unnamed argument is just punctuation, whitespace or html tags otherwise it returns the argument unchanged (including leading/trailing space). If the argument could contain "=", then it must be called explicitly: * <code><nowiki>| 1 = whatever-the-argument-is</nowiki></code> In that case, leading and trailing spaces are trimmed. It finds use in infoboxes where it can replace tests like: * <code><nowiki>{{#if: {{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}} | <span class="xxx">{{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}}</span> | }}</nowiki></code> with a form that uses just a single call to Wikidata: * <code><nowiki>{{#invoke |WikidataIB |emptyor |1= <span class="xxx">{{#invoke:WikidataIB |getvalue |P99 |fwd=ALL}}</span> }}</nowiki></code>
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