diff options
Diffstat (limited to 'lib/edit.ml')
| -rw-r--r-- | lib/edit.ml | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/lib/edit.ml b/lib/edit.ml index a7a7520b83..e22c17ad51 100644 --- a/lib/edit.ml +++ b/lib/edit.ml @@ -80,8 +80,8 @@ let undo e n = | None -> invalid_arg "Edit.undo" | Some d -> let (bs,_) = Hashtbl.find e.buf d in - if Bstack.depth bs <= n then - errorlabstrm "Edit.undo" (str"Undo stack exhausted"); + if Bstack.depth bs = 1 & n > 0 then + errorlabstrm "Edit.undo" (str"Undo stack exhausted"); repeat n Bstack.pop bs let create e (d,b,c,udepth) = |