Comment 11 for bug 303140

A dialog when stripping an attachment from a signed/encrypted message would be
needed to warn the user of hidden consequences (loss of sig/encrypto). Since the
dialog could get annoying, and especially since having locally stored message
that are signed/encrypted is less important, one of those nifty "annoy me
again?" checkboxes would be needed (UNchecked by default).

+===========================================================+
| |
| / \ Removing the attachment(s) will also remove the |
| / | \ signature/encryption from this message. |
| ----- |
| Do you still want to remove the attachment(s)? |
| |
| [ ] Show this alert the next time I remove an attachment |
| from a signed/encrypted message. |
| |
| [[ Yes ]] [ No ] [ Help... ] |
+-----------------------------------------------------------+

Of course, the dialog would only appear when removing attachments from signed
and/or encrypted messages.

PS. Should bug 288273 and this bug (was Suite, now Core) be dupes?