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-rw-r--r--isar/isar-syntax.el2
1 files changed, 1 insertions, 1 deletions
diff --git a/isar/isar-syntax.el b/isar/isar-syntax.el
index 797428bc..09ffee34 100644
--- a/isar/isar-syntax.el
+++ b/isar/isar-syntax.el
@@ -212,7 +212,7 @@ This list is in the right format for proof-easy-config.")
(defconst isar-ext-first "\\(?:\\\\<\\^?[A-Za-z]+>\\|[A-Za-z]\\)")
(defconst isar-ext-rest "\\(?:\\\\<\\^?[A-Za-z]+>\\|[A-Za-z0-9'_]\\)")
-(defconst isar-long-id-stuff (concat "\\(:?" isar-ext-rest "\\|\\.\\)+"))
+(defconst isar-long-id-stuff (concat "\\(?:" isar-ext-rest "\\|\\.\\)+"))
(defconst isar-id (concat "\\(" isar-ext-first isar-ext-rest "*\\)"))
(defconst isar-idx (concat isar-id "\\(?:\\.[0-9]+\\)?"))