IRB Discord fix and better error reporting

main.rb

@@ -58,7 +58,9 @@ def define_command text, options
         begin
             yield event
         rescue => err
-            $study_channel.send "```rb\n#{PP.pp(err, "")}\n#{PP.pp(err.backtrace.join("\n"), "")}\n```"
+            # TODO: This is ugly
+            # Ideally we should also print to stderr and keep running
+            $study_channel.send "```rb\n#{PP.pp(err, "")}\n#{err.backtrace.join("\n")}\n```"
         end
     end
 end
@@ -254,6 +256,7 @@ define_command "Edit Puzzle", [
     end
 
     text = puzzle.text
+    # TODO: This errors for some reason and I don't know why
     new_text = text.gsub(Regexp.compile(event.options["find_regex"]), new_text)
     puzzle.text = new_text
     puzzle.save
@@ -297,7 +300,10 @@ end
 
 define_command("IRB Discord", []) do |event|
     if event.user == $me
-        return if $irb_sessions.filter { |s| s.user == event.user and s.channel == event.channel }.present?
+        if $irb_sessions.filter { |s| s.user == event.user and s.channel == event.channel }.present?
+            event.respond content: "You already had a live session, but it doesn't hurt to make sure."
+            next
+        end
         event.respond content: "Started an IRB-Discord session. Use `exit` to exit."
         session = DiscordIRBSession.new
         session.user = event.user