silence warnings from the ancient net/dav library

Author: jneen

tasks/builtins/apache.rake

@@ -1,13 +1,16 @@
 # -*- coding: utf-8 -*- #
 # frozen_string_literal: true
 
+require_relative '../task_helper'
+
 # backcompat for ancient net/dav lib
 def File.exists?(p)
   File.exist?(p)
 end
 
-require 'open-uri'
-require_relative '../task_helper'
+# And it still warns a lot.
+silence_warnings { require 'net/dav' }
+
 require 'nokogiri'
 require 'svn/downloader'
 

tasks/task_helper.rb

@@ -1,5 +1,12 @@
 require 'open-uri'
 
+def silence_warnings
+  old_verbose, $VERBOSE = $VERBOSE, false
+  yield
+ensure
+  $VERBOSE = old_verbose
+end
+
 class BuiltinsGenerator
   def self.process(fname, *a)
     new(*a).process(fname)