From a447b904cff36fa2d690f1d0068eb28589369787 Mon Sep 17 00:00:00 2001
From: Raimo Niskanen <raimo@erlang.org>
Date: Mon, 5 Nov 2018 16:40:52 +0100
Subject: Document system_events better

---
 lib/stdlib/src/otp_internal.erl | 8 ++++++++
 1 file changed, 8 insertions(+)

(limited to 'lib/stdlib/src/otp_internal.erl')

diff --git a/lib/stdlib/src/otp_internal.erl b/lib/stdlib/src/otp_internal.erl
index aaed13ba3a..a0fbd259e2 100644
--- a/lib/stdlib/src/otp_internal.erl
+++ b/lib/stdlib/src/otp_internal.erl
@@ -55,6 +55,14 @@ obsolete_1(erlang, now, 0) ->
 obsolete_1(calendar, local_time_to_universal_time, 1) ->
     {deprecated, {calendar, local_time_to_universal_time_dst, 1}};
 
+%% *** STDLIB added in OTP 22 ***
+
+obsolete_1(sys, get_debug, 3) ->
+    {deprecated,
+     "Deprecated function. "
+     "Incorrectly documented and in fact only for internal use. "
+     "Can often be replaced with sys:get_log/1."};
+
 %% *** STDLIB added in OTP 20 ***
 
 obsolete_1(gen_fsm, start, 3) ->
-- 
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