;; here be some quick n dirty snippets of potentially relevant config code for getting erc to rewrap on the fly all squishy nice.   ... i'm a noob who blindly copy-pasta'd, so, maybe i missed something, and maybe i included a few extra unecessary parts here. idk. i've not tested.  just a hastey paste perchance it helps.  ... probably better you look to https://www.emacswiki.org/emacs/ErcFilling


;; adjusts per size of screen... new lines only, can look messy with stuff already on screen.
(add-hook 'window-configuration-change-hook
	    '(lambda ()
	    	          (setq erc-fill-column (- (window-width) 2))))

;; this should wrap chat the way you like.
(add-hook 'erc-mode-hook 'visual-line-mode)

;; wrapping
(global-visual-line-mode 1)

;; mark the line between read and unread
;; keeps possition rather than marking the line, unfortunately.
;;(erc-keep-place-mode 1)

;; lets sort this jumping to middle of the screen crap, once n for all.
;; https://www.gnu.org/software/emacs/manual/html_node/emacs/Auto-Scrolling.html#Auto-Scrolling

(setq scroll-margin 1
    scroll-conservatively 0
        ;; scroll-up-aggressively 0.01 ;; ? involved in the erroneous behavior of scrolling to top ?
	    scroll-down-aggressively 0.01)
	    (setq-default scroll-down-aggressively 0.01)
	    ;; (setq-default scroll-up-aggressively 0.01) ;; removed for testing


(setq scroll-step 1) ;; claimed to risk display lock-up in some cases... leaving on until that happens.
(setq scroll-conservatively 10000)
(setq auto-window-vscroll nil)