From c0c59c03c28ed67418103340fddbaf911e336491 Mon Sep 17 00:00:00 2001
From: Jasper Hugunin
Date: Wed, 23 Jan 2019 14:20:22 -0800
Subject: Implement a method for manual declaration of implicits.

This is intended to be separate from handling of implicit binders.
The remaining uses of declare_manual_implicits satisfy a lot of
assertions, giving the possibility of simplifying the interface in the
future.

Two disabled warnings are added for things that currently pass silently.

Currently only Mtac passes non-maximal implicits to
declare_manual_implicits with the force-usage flag set. When implicit
arguments don't have to be named, should move Mtac over to
set_implicits.
---
 doc/sphinx/language/gallina-extensions.rst | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'doc')

diff --git a/doc/sphinx/language/gallina-extensions.rst b/doc/sphinx/language/gallina-extensions.rst
index f1733a5ebf..8b7e5c9a02 100644
--- a/doc/sphinx/language/gallina-extensions.rst
+++ b/doc/sphinx/language/gallina-extensions.rst
@@ -1651,6 +1651,13 @@ Declaring Implicit Arguments
    To know which are the implicit arguments of an object, use the
    command :cmd:`Print Implicit` (see :ref:`displaying-implicit-args`).
 
+.. warn:: Argument number @num is a trailing implicit so must be maximal.
+
+   For instance in
+
+   .. coqtop:: all
+
+      Arguments prod _ [_].
 
 Automatic declaration of implicit arguments
 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
-- 
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