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-rw-r--r--isar/isar-syntax.el2
1 files changed, 2 insertions, 0 deletions
diff --git a/isar/isar-syntax.el b/isar/isar-syntax.el
index 19b8f775..239a02ec 100644
--- a/isar/isar-syntax.el
+++ b/isar/isar-syntax.el
@@ -416,6 +416,8 @@ matches contents of quotes for quoted identifiers.")
;; ----- variations on undo
+(defconst isar-linear-undo "linear_undo")
+
(defconst isar-undo "ProofGeneral.undo;")
(defun isar-remove (name)