old_contents: #  Copyright 2008-2015 Nokia Solutions and Networks
  #
  #  Licensed 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.
  
  RESERVED_KEYWORDS = ['for', 'while', 'break', 'continue', 'end',
                       'if', 'else', 'elif', 'else if', 'return']
  
  
  class Reserved(object):
      ROBOT_LIBRARY_SCOPE = 'GLOBAL'
  
      def get_keyword_names(self):
          return RESERVED_KEYWORDS
  
      def run_keyword(self, name, args):
          raise Exception("'%s' is a reserved keyword" % name.title())
  
new_contents: #  Copyright 2008-2015 Nokia Solutions and Networks
  #
  #  Licensed 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.
  
  import re
  
  RESERVED_KEYWORDS = ['for', 'while', 'break', 'continue', 'end',
                       'if', 'else', 'elif', 'else if', 'return']
  
  
  class Reserved(object):
      ROBOT_LIBRARY_SCOPE = 'GLOBAL'
  
      def get_keyword_names(self):
          return RESERVED_KEYWORDS
  
      def run_keyword(self, name, args):
          error = "'%s' is a reserved keyword." % name
          if name in ['else', 'else if']:
              error += " Thus '%s' must be in all-caps (%s) when used as a marker with 'Run Keyword'." %(name,name.upper())
          raise Exception(error)
subject: Improve error message for "Else" instead of "ELSE" #1898