erc-server-259-functions

erc-server-259-functions is a variable defined in `erc-backend.el'.
Its value is

erc-server-250

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

Documentation:
Hook called upon receiving a 259 server response.
Each function is called with two arguments, the process associated
with the response and the parsed response. If the function returns
non-nil, stop processing the hook. Otherwise, continue.

See also `erc-server-250'.