JS: After calling bbs.edit_msg() to edit a message, the editor shows I'm editing a file and doesn't display 'from', 'to', or 'subject' from the message being edited

The JS function bbs.edit_msg() allows editing a message. When using that, the message editor shows I'm editing a file (MSGTMP), and the 'from', 'to', and 'subject' information from the message being edited isn't displayed (maybe isn't available?). I'm wondering if it would make sense to have the 'from', 'to,' and 'subject' available for the editor? (it this a similar case as the recent change to console.editfile() to allow the user to edit a file?)

Also, when editing a message with bbs.edit_msg(), is it possible to allow changing the subject of the message?