Document that Perl's Tie might add a trailing newline

Report by Stefan Kaltenbrunner

diff --git a/src/tools/copyright.pl b/src/tools/copyright.pl
index 2db88e0c2da68f25d20bc95adefb7ad9c6ce05ea..04917e7991b5840b5ffe64d23f52ce53606a5ba0 100755 (executable)
--- a/src/tools/copyright.pl
+++ b/src/tools/copyright.pl
@@ -5,6 +5,8 @@
 # Copyright (c) 2011-2015, PostgreSQL Global Development Group
 #
 # src/tools/copyright.pl
+#
+# FYI, Tie adds a trailing newline on the last line if missing.
 #################################################################
 
 use strict;