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-rw-r--r--conf/lua/regexp/headers.lua17
1 files changed, 17 insertions, 0 deletions
diff --git a/conf/lua/regexp/headers.lua b/conf/lua/regexp/headers.lua
index 4bea12ab4..e3978d429 100644
--- a/conf/lua/regexp/headers.lua
+++ b/conf/lua/regexp/headers.lua
@@ -1,3 +1,20 @@
+-- Actually these regular expressions were obtained from SpamAssassin project, so they are licensed by apache license:
+--
+-- Licensed to the Apache Software Foundation (ASF) under one or more
+-- contributor license agreements. See the NOTICE file distributed with
+-- this work for additional information regarding copyright ownership.
+-- The ASF licenses this file to you under the Apache License, Version 2.0
+-- (the "License"); you may not use this file except in compliance with
+-- the License. You may obtain a copy of the License at:
+--
+-- http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software
+-- distributed under the License is distributed on an "AS IS" BASIS,
+-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+-- See the License for the specific language governing permissions and
+-- limitations under the License.
+--
-- Definitions of header regexps
local reconf = config['regexp']