From 2e3f4c1a4e2ae72b364f9ca37ee0976ad5809d9c Mon Sep 17 00:00:00 2001
From: Simon MacMullen <simon@rabbitmq.com>
Date: Fri, 6 Jan 2012 15:43:19 +0000
Subject: Better comment.

---
 src/rabbit_ssl.erl | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/rabbit_ssl.erl b/src/rabbit_ssl.erl
index d9c8ac00..ff87d989 100644
--- a/src/rabbit_ssl.erl
+++ b/src/rabbit_ssl.erl
@@ -151,8 +151,10 @@ escape_rdn_value([C | S], middle) when C =:= $"; C =:= $+; C =:= $,; C =:= $;;
                                        C =:= $<; C =:= $>; C =:= $\\ ->
     [$\\, C | escape_rdn_value(S, middle)];
 escape_rdn_value([C | S], middle) when C < 32 ; C >= 126 ->
-    %% only U+0000 needs escaping, but for display purposes it's handy
-    %% to escape all non-printable chars
+    %% Of ASCII characters only U+0000 needs escaping, but for display
+    %% purposes it's handy to escape all non-printable chars. All non-ASCII
+    %% characters get converted to UTF-8 sequences and then escaped. We've
+    %% already got a UTF-8 sequence here, so just escape it.
     lists:flatten(io_lib:format("\\~2.16.0B", [C])) ++
         escape_rdn_value(S, middle);
 escape_rdn_value([C | S], middle) ->
-- 
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