(completion-ignore-case t))
(cl-case command
(interactive (company-begin-backend 'notmuch-company))
- (prefix (and (derived-mode-p 'message-mode)
+ (prefix (and (or (derived-mode-p 'message-mode)
+ (derived-mode-p 'org-msg-edit-mode))
(looking-back
(concat notmuch-address-completion-headers-regexp ".*")
(line-beginning-position))