print sandbox message

Closes Homebrew/homebrew#42293.

Signed-off-by: Xu Cheng <xucheng@me.com>

1 files changed, 9 insertions, 2 deletions

diff --git a/Library/Homebrew/sandbox.rb b/Library/Homebrew/sandbox.rb
index 3affa4f95..7ad845d5e 100644
--- a/Library/Homebrew/sandbox.rb
+++ b/Library/Homebrew/sandbox.rb
@@ -14,9 +14,16 @@ class Sandbox
   end
 
   def self.print_autodisable_warning
-    unless @print_autodisable_warning
+    unless @printed_autodisable_warning
       opoo "The sandbox cannot be used in debug or interactive mode."
-      @print_autodisable_warning = true
+      @printed_autodisable_warning = true
+    end
+  end
+
+  def self.print_sandbox_message
+    unless @printed_sandbox_message
+      ohai "Using the sandbox"
+      @printed_sandbox_message = true
     end
   end