Variable: erc-reuse-frames
erc-reuse-frames is a customizable variable defined in erc.el.gz.
Value
t
Documentation
Determines whether new frames are always created.
Non-nil means that a new frame is not created to display an ERC
buffer if there is already a window displaying it. This only has
effect when erc-join-buffer is set to frame.
Source Code
;; Defined in /usr/src/emacs/lisp/erc/erc.el.gz
(defcustom erc-reuse-frames t
"Determines whether new frames are always created.
Non-nil means that a new frame is not created to display an ERC
buffer if there is already a window displaying it. This only has
effect when `erc-join-buffer' is set to `frame'."
:group 'erc-buffers
:type 'boolean)