-//FIXME This should be generalized to take "text" as part of the
-//constructor and so to set what text we check for, rather than
-//hard-coding it as "auto". But see qt_helpers.h for reasons this
-//is not so trivial and an idea about how to do it. (RGH)
+
+/** @returns a new @c LengthValidator that does not accept negative lengths.
+ * but glue lengths.
+ */
+LengthValidator * unsignedGlueLengthValidator(QLineEdit *);
+
+