Disable deprecation warning by the default [Feature #16345]

And `-w` option turns it on.

1 files changed, 3 insertions, 1 deletions

diff --git a/tool/lib/envutil.rb b/tool/lib/envutil.rb
index 860ab30689..d9350395fe 100644
--- a/tool/lib/envutil.rb
+++ b/tool/lib/envutil.rb
@@ -47,12 +47,13 @@ module EnvUtil
   class << self
     attr_accessor :timeout_scale
     attr_reader :original_internal_encoding, :original_external_encoding,
-                :original_verbose
+                :original_verbose, :original_warning
 
     def capture_global_values
       @original_internal_encoding = Encoding.default_internal
       @original_external_encoding = Encoding.default_external
       @original_verbose = $VERBOSE
+      @original_warning = %i[deprecated experimental].to_h {|i| [i, Warning[i]]}
     end
   end
 
@@ -209,6 +210,7 @@ module EnvUtil
   ensure
     stderr, $stderr = $stderr, stderr
     $VERBOSE = EnvUtil.original_verbose
+    EnvUtil.original_warning.each {|i, v| Warning[i] = v}
   end
   module_function :verbose_warning