erc-echo-notice-hook

erc-echo-notice-hook is a variable defined in `erc.el'.
Its value is

nil

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

Documentation:
List of functions to call to echo a private notice.
Each function is called with four arguments, the string
to display, the parsed server message, the target buffer (or
nil), and the sender. The functions are called in order, until a
function evaluates to non-nil. These hooks are called after
those specified in `erc-echo-notice-always-hook'.

See also: `erc-echo-notice-always-hook',
`erc-echo-notice-in-default-buffer',
`erc-echo-notice-in-target-buffer',
`erc-echo-notice-in-minibuffer',
`erc-echo-notice-in-server-buffer',
`erc-echo-notice-in-active-non-server-buffer',
`erc-echo-notice-in-active-buffer',
`erc-echo-notice-in-user-buffers',
`erc-echo-notice-in-user-and-target-buffers',
`erc-echo-notice-in-first-user-buffer'

You can customize this variable.