if you have a : in a translatable string and no %{} you already know you're doing it wrong [ci skip]

app/controllers/invitations_controller.rb

@@ -51,7 +51,7 @@ class InvitationsController < ApplicationController
     inviter = EmailInviter.new(params[:email_inviter][:emails], current_user, params[:email_inviter])
     inviter.send!
 
-    redirect_to :back, :notice => "#{t('invitations.create.sent')} #{inviter.emails.join(', ')}"
+    redirect_to :back, :notice => t('invitations.create.sent', :emails => inviter.emails.join(', '))
   end
 
   def check_if_invites_open

config/locales/diaspora/en.yml

@@ -356,7 +356,7 @@ en:
     excited: "%{name} is excited to see you here."
   invitations:
     create:
-      sent: "Invitations have been sent to: "
+      sent: "Invitations have been sent to: %{emails}"
       rejected: "The following email addresses had problems: "
       no_more: "You have no more invitations."
       already_sent: "You already invited this person."