Help: Document that set_property APPEND ignores empty values

Fixes: #20581
This commit is contained in:
Brad King
2020-04-17 07:11:33 -04:00
parent 9a450bcfec
commit ad937fb36c

View File

@@ -66,7 +66,8 @@ the property to set. Remaining arguments are used to compose the
property value in the form of a semicolon-separated list.
If the ``APPEND`` option is given the list is appended to any existing
property value. If the ``APPEND_STRING`` option is given the string is
property value (except that empty values are ignored and not appended).
If the ``APPEND_STRING`` option is given the string is
appended to any existing property value as string, i.e. it results in a
longer string and not a list of strings. When using ``APPEND`` or
``APPEND_STRING`` with a property defined to support ``INHERITED``