Print message to $stderr for custom action

1 files changed, 6 insertions, 0 deletions

diff --git a/lib/action/custom.rb b/lib/action/custom.rb
index 2aea41a..328a12f 100644
--- a/lib/action/custom.rb
+++ b/lib/action/custom.rb
@@ -54,6 +54,8 @@ module Action
           raise UnsuccessfulError, 'Response was not valid JSON'
         end
 
+        inform_client(body['message']) if body['message']
+
         print_flush(body['result'])
 
         # In the context of the git push sequence of events, it's necessary to read
@@ -94,6 +96,10 @@ module Action
       $stdout.flush
     end
 
+    def inform_client(str)
+      $stderr.puts(str)
+    end
+
     def validate!
       validate_payload!
       validate_data!