outline-item-parent

Arguments: outline outline-item-or-value

Returns the outline-item that is the parent of the specified (by the second argument) outline-item, if any, or nil if there is no parent item.

outline should be the outline widget that contains the items.

outline-item-or-value may be either an outline-item or its value. Passing the item's value is handy when you do not have a handle on the outline-item object, but is less efficient because the item must first be looked up from its value. And if multiple items have the same value, then passing the value may result in a different item than the intended one being found.

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Created 2010.1.21.