message-tab-body-function

message-tab-body-function is a variable defined in `message.el'.
Its value is

nil

• This variable may be risky if used as a file-local variable.

Documentation:
*Function to execute when `message-tab' (TAB) is executed in the body.
If nil, the function bound in `text-mode-map' or `global-map' is executed.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 22.1 of Emacs.