tmux is a great tool. I have been using it since I think half year. Before I used to use screen, but only to manage my remote shells. Now I am using tmux for local and remote shell management.

In order to make a switch from screen to tmux smooth I decided to remap default binding for prefix from C-b to C-a (like in screen). This caused that one of my favorite shortcuts - C-a for going back to the beginning of the line, stopped working.

Recently I have discovered that making:

1

bind C-a send-prefix

binds the shortcut to this sequence C-a C-a !