From 62df6dbb46ce00be1031e907d222116864431888 Mon Sep 17 00:00:00 2001
From: Maxime Coste <mawww@kakoune.org>
Date: Wed, 21 Dec 2016 06:39:58 +0000
Subject: [PATCH] Display a message when entering insert mode while readonly

Fixes #1050
---
 src/input_handler.cc | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/input_handler.cc b/src/input_handler.cc
index 2a6a8b68..19fd0efd 100644
--- a/src/input_handler.cc
+++ b/src/input_handler.cc
@@ -1002,6 +1002,11 @@ public:
         last_insert().disable_hooks = context().hooks_disabled();
         context().hooks().run_hook("InsertBegin", "", context());
         prepare(m_insert_mode, count);
+
+        if (context().has_client() and
+            context().options()["readonly"].get<bool>())
+            context().print_status({ "Entering insert mode while readonly",
+                                     get_face("Information") });
     }
 
     ~Insert()