--- /dev/null
+#
+# regexpescape.rb
+#
+module Puppet::Parser::Functions
+ newfunction(:regexpescape, :type => :rvalue, :doc => <<-EOS
+ Regexp escape a string or array of strings.
+ Requires either a single string or an array as an input.
+ EOS
+ ) do |arguments| # rubocop:disable Style/ClosingParenthesisIndentation
+ raise(Puppet::ParseError, "regexpescape(): Wrong number of arguments given (#{arguments.size} for 1)") if arguments.empty?
+
+ value = arguments[0]
+
+ unless value.is_a?(Array) || value.is_a?(String)
+ raise(Puppet::ParseError, 'regexpescape(): Requires either array or string to work with')
+ end
+
+ result = if value.is_a?(Array)
+ # Numbers in Puppet are often string-encoded which is troublesome ...
+ value.collect { |i| i.is_a?(String) ? Regexp.escape(i) : i }
+ else
+ Regexp.escape(value)
+ end
+
+ return result
+ end
+end
+
+# vim: set ts=2 sw=2 et :