can't easily move focus to message body when replying

I'm running Geary from git master.

When I reply to a message, the inline composer initially puts the focus in the To box. It would be more convenient to have the focus in the message body, since typically I don't want to change the recipient and I want to begin typing my response immediately. Furthermore, in this situation I can't use the down arrow to move the focus to the message body, and if I use the Tab key I have to press it many times to get there. So I have to use the mouse to move the focus to the body, which is a bother.

I think the best solution would be to set the focus to the message body automatically.