Why is there no signature separator “--” when responding, but it appears in a new message?

Question

I'm using Thunderbird 10.0.2 on Mac and have a simple text signature.

When I write new message, Thunderbird automatically adds -- before the signature, but when I click on reply to a message, it doesn’t.

How can I get it to always add the -- before my signature?

Answer 1

FWIW, Setting it up for appending after quote of original message appears to retain the '-- ' separator. You can configure it in:

Account-Settings -> Your Account -> Composition and Addressing -> and place my signature set to below the quote.

This setting is appropriate for bottom posting.