diff -r 73487ebd7332 -r 12c984b7d391 src/Tools/Haskell/Haskell.thy
--- a/src/Tools/Haskell/Haskell.thy	Fri Jul 30 22:39:08 2021 +0200
+++ b/src/Tools/Haskell/Haskell.thy	Fri Jul 30 22:54:50 2021 +0200
@@ -200,7 +200,7 @@
 
   the, the_default,
 
-  fold, fold_rev, single, map_index, get_index,
+  fold, fold_rev, single, map_index, get_index, separate,
 
   proper_string, quote, space_implode, commas, commas_quote, cat_lines,
   space_explode, split_lines, trim_line, clean_name)
@@ -1483,7 +1483,7 @@
   commas, enclose, enum, list, str_list, big_list)
 where
 
-import Isabelle.Library hiding (quote, commas)
+import Isabelle.Library hiding (quote, separate, commas)
 import qualified Data.List as List
 import qualified Isabelle.Buffer as Buffer
 import qualified Isabelle.Markup as Markup