src/Pure/Thy/thy_output.ML

--- a/src/Pure/Thy/thy_output.ML	Sat Jan 13 19:50:37 2018 +0100
+++ b/src/Pure/Thy/thy_output.ML	Sat Jan 13 20:01:33 2018 +0100
@@ -124,7 +124,7 @@
         val source = Input.source true (Symbol_Pos.implode body) (Symbol_Pos.range body);
       in
         output_text ctxt {markdown = false} source
-        |> Latex.enclose_body "%\n\\isamarkupcmt{" "}"
+        |> Latex.enclose_body "%\n\\isamarkupcmt{" "%\n}"
       end);
 
 in