Fixes the backticks in use case signature crash

Suggested by Simon in
https://groups.google.com/forum/?hl=en&fromgroups#!topic/scala-internals/z7s1CCRCz74

Now it eliminates backticks and gracefully bails out with an error
message when it can't remove the wiki syntax.

1 files changed, 26 insertions, 0 deletions

diff --git a/test/scaladoc/run/usecase-var-expansion.scala b/test/scaladoc/run/usecase-var-expansion.scala
new file mode 100644
index 0000000000..e86ea4a835
--- /dev/null
+++ b/test/scaladoc/run/usecase-var-expansion.scala
@@ -0,0 +1,26 @@
+import scala.tools.nsc.doc.model._
+import scala.tools.partest.ScaladocModelTest
+import language._
+
+object Test extends ScaladocModelTest {
+
+  override def code = """
+    /**
+     * @define Coll `Test`
+     */
+    class Test[T] {
+      /**
+       * member $Coll
+       * @usecase def foo: $Coll[T]
+       *   usecase $Coll
+       */
+      def foo(implicit err: String): Test[T] = sys.error(err)
+    }
+
+    /** @define Coll {{{some `really` < !! >> invalid $$$ thing}}} */
+    class Test2[T] extends Test[Int]
+  """
+
+  def scaladocSettings = ""
+  def testModel(root: Package) = ()
+}