From 8abacf00c6c39ec98085d531737d18edc9c19b2a Mon Sep 17 00:00:00 2001
From: Gaëtan Gilbert
Date: Thu, 2 May 2019 19:46:02 +0200
Subject: Proof_global: pass only 1 pstate when we don't want the proof stack

Typically instead of [start_proof : ontop:Proof_global.t option -> bla ->
Proof_global.t] we have [start_proof : bla -> Proof_global.pstate] and
the pstate is pushed on the stack by a caller around the
vernacentries/mlg level.

Naming can be a bit awkward, hopefully it can be improved (maybe in a
followup PR).

We can see some patterns appear waiting for nicer combinators, eg in
mlg we often only want to work with the current proof, not the stack.

Behaviour should be similar modulo bugs, let's see what CI says.
---
 doc/plugin_tutorial/tuto1/src/g_tuto1.mlg | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

(limited to 'doc/plugin_tutorial')

diff --git a/doc/plugin_tutorial/tuto1/src/g_tuto1.mlg b/doc/plugin_tutorial/tuto1/src/g_tuto1.mlg
index 75251d8e33..147b0df567 100644
--- a/doc/plugin_tutorial/tuto1/src/g_tuto1.mlg
+++ b/doc/plugin_tutorial/tuto1/src/g_tuto1.mlg
@@ -146,11 +146,12 @@ END
 
 VERNAC COMMAND EXTEND ExploreProof CLASSIFIED AS QUERY
 | ![ proof ] [ "Cmd9" ] ->
-  { fun ~pstate ->
-    Option.iter (fun (pstate : Proof_global.t) ->
+  { fun ~pstate:ontop ->
+    Option.iter (fun ontop ->
+        let pstate = Proof_global.get_current_pstate ontop in
         let sigma, env = Pfedit.get_current_context pstate in
         let pprf = Proof.partial_proof Proof_global.(give_me_the_proof pstate) in
         Feedback.msg_notice
-          (Pp.prlist_with_sep Pp.fnl (Printer.pr_econstr_env env sigma) pprf)) pstate;
-    pstate }
+          (Pp.prlist_with_sep Pp.fnl (Printer.pr_econstr_env env sigma) pprf)) ontop;
+    ontop }
 END
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