diff options
Diffstat (limited to 'lib/edit.ml')
| -rw-r--r-- | lib/edit.ml | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/lib/edit.ml b/lib/edit.ml index 6ffc6c850d..a7a7520b83 100644 --- a/lib/edit.ml +++ b/lib/edit.ml @@ -80,9 +80,9 @@ let undo e n = | None -> invalid_arg "Edit.undo" | Some d -> let (bs,_) = Hashtbl.find e.buf d in - repeat n Bstack.pop bs; - if Bstack.depth bs = 1 then - errorlabstrm "Edit.undo" (str"Undo stack exhausted") + if Bstack.depth bs <= n then + errorlabstrm "Edit.undo" (str"Undo stack exhausted"); + repeat n Bstack.pop bs let create e (d,b,c,udepth) = if Hashtbl.mem e.buf d then |