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| author |  letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2012-01-26 16:06:14 +0000 |
|---|---|---|
| committer | letouzey <letouzey@85f007b7-540e-0410-9357-904b9bb8a0f7> | 2012-01-26 16:06:14 +0000 |
| commit | c51a32a5f3825dfd78212c976fb0d2d62b4e7d71 (patch) | |
| tree | 0a53e15133cd46ddbe1e64dc9bb03d687b8a1867 | |
| parent | 2e8c3911f22ccfec57f10ece68db731b4753d6c4 (diff) | |
Fail: discard the effects of a successful command (fix #2682)
git-svn-id: svn+ssh://scm.gforge.inria.fr/svn/coq/trunk@14945 85f007b7-540e-0410-9357-904b9bb8a0f7
| -rw-r--r-- | toplevel/vernac.ml | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/toplevel/vernac.ml b/toplevel/vernac.ml index 84e20f5ed..cbd95a4fb 100644 --- a/toplevel/vernac.ml +++ b/toplevel/vernac.ml @@ -206,7 +206,9 @@ let rec vernac_com interpfun (loc,com) = | VernacFail v -> if not !just_parsing then begin try - interp v; raise HasNotFailed + (* If the command actually works, ignore its effects on the state *) + States.with_state_protection + (fun v -> interp v; raise HasNotFailed) v with e -> match real_error e with | HasNotFailed -> errorlabstrm "Fail" (str "The command has not failed !") |