erc-insert-away-timestamp-function

erc-insert-away-timestamp-function is a variable defined in `erc-stamp.el'.
Its value is

erc-insert-timestamp-left-and-right

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

Documentation:
Function to use to insert the away timestamp.

See `erc-insert-timestamp-function' for details.

You can customize this variable.