From ca5b491753ad363da8d9deb5978b56231ec27bf5 Mon Sep 17 00:00:00 2001
From: cinap_lenrek <cinap_lenrek@felloff.net>
Date: Thu, 28 Apr 2016 01:53:09 +0200
Subject: rune(2): add Runeerror reencoding considerations in BUGS section
 (thanks aiju)

---
 sys/man/2/rune | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/sys/man/2/rune b/sys/man/2/rune
index 124692797..c72e0b438 100644
--- a/sys/man/2/rune
+++ b/sys/man/2/rune
@@ -191,3 +191,13 @@ returns
 .SH SEE ALSO
 .IR utf (6),
 .IR tcs (1)
+.SH BUGS
+When re-encoding UTF strings with
+.I chartorune
+and
+.I runetochar
+one has to consider that encoding a
+.I Runeerror
+(0xFFFD)
+that resulted from invalid encoded input can yield
+a longer UTF sequence on the output.
-- 
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