mplist_find_by_key − Find a property of a specific key in a property list.
MPlist* mplist_find_by_key (MPlist * plist, MSymbol key)
Find a property of a specific key in a property list. The mplist_find_by_key() function searches property list plist from the beginning for a property whose key is key. If such a property is found, a sublist of plist whose first element is the found one is returned. Otherwise, NULL is returned.
If key is Mnil, it returns a sublist of plist whose first element is the last one of plist.
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