Update tutorial plugin to use sigma, in keeping with doc recommendations

1 files changed, 6 insertions, 6 deletions

diff --git a/doc/plugin_tutorial/tuto1/src/simple_check.ml b/doc/plugin_tutorial/tuto1/src/simple_check.ml
index 2949adde73..c2f09c64e0 100644
--- a/doc/plugin_tutorial/tuto1/src/simple_check.ml
+++ b/doc/plugin_tutorial/tuto1/src/simple_check.ml
@@ -1,32 +1,32 @@
 let simple_check1 value_with_constraints =
   begin
     let evalue, st = value_with_constraints in
-    let evd = Evd.from_ctx st in
+    let sigma = Evd.from_ctx st in
 (* This is reverse engineered from vernacentries.ml *)
 (* The point of renaming is to make sure the bound names printed by Check
    can be re-used in `apply with` tactics that use bound names to
    refer to arguments. *)
     let j = Environ.on_judgment EConstr.of_constr
       (Arguments_renaming.rename_typing (Global.env())
-         (EConstr.to_constr evd evalue)) in
+         (EConstr.to_constr sigma evalue)) in
     let {Environ.uj_type=x}=j in x
   end
 
 let simple_check2 value_with_constraints =
   let evalue, st = value_with_constraints in
-  let evd = Evd.from_ctx st in
+  let sigma = Evd.from_ctx st in
 (* This version should be preferred if bound variable names are not so
   important, you want to really verify that the input is well-typed,
   and if you want to obtain the type. *)
 (* Note that the output value is a pair containing a new evar_map:
    typing will fill out blanks in the term by add evar bindings. *)
-  Typing.type_of (Global.env()) evd evalue
+  Typing.type_of (Global.env()) sigma evalue
 
 let simple_check3 value_with_constraints =
   let evalue, st = value_with_constraints in
-  let evd = Evd.from_ctx st in
+  let sigma = Evd.from_ctx st in
 (* This version should be preferred if bound variable names are not so
   important and you already expect the input to have been type-checked
   before.  Set ~lax to false if you want an anomaly to be raised in
   case of a type error.  Otherwise a ReTypeError exception is raised. *)
-  Retyping.get_type_of ~lax:true (Global.env()) evd evalue
+  Retyping.get_type_of ~lax:true (Global.env()) sigma evalue