c:on-empty

<c:on-empty
  value? = expression >
  <!-- Content: sequence-constructor -->
</c:on-empty>

Evaluates only if the current sequence constructor has not appended any items so far.

Permitted parent elements

Any XCST element whose content model is sequence-constructor

Any literal result element

Attributes

In addition to the attributes in the preceding table, there are a number of standard attributes that may appear on any XCST element.

Error Conditions

It is a compilation error if the value attribute is present when the content of the element is non-empty.