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-rw-r--r--ide/coqOps.ml2
1 files changed, 1 insertions, 1 deletions
diff --git a/ide/coqOps.ml b/ide/coqOps.ml
index 6ea1678acd..eb09d3bbb7 100644
--- a/ide/coqOps.ml
+++ b/ide/coqOps.ml
@@ -67,7 +67,7 @@ end = struct
let hidden_edit_id () = decr id; !id
let set_flags s f = s.flags <- f
- let add_flag s f = s.flags <- CList.add_set f s.flags
+ let add_flag s f = s.flags <- CList.add_set (=) f s.flags
let has_flag s mf =
List.exists (fun f -> mem_flag_of_flag f = mf) s.flags
let remove_flag s mf =