Fix buffer-mismatch bug in erc-scroll-to-bottom

* lisp/erc/erc-goodies.el (erc-scroll-to-bottom): Only `recenter' when
the selected window's buffer is current.  Previously, the module
`scrolltobottom' signaled an "Error in `post-command-hook'" when a
user clicked a channel indicator in the mode line from a window
showing another ERC buffer.
* lisp/erc/erc-track.el (erc-track--switch-fallback-blockers): New
internal variable used by `erc-track--switch-buffer' in deciding
whether to set `erc-track-last-non-erc-buffer' to the current buffer.
(erc-track--switch-buffer): Consult list of `buffer-match-p'
conditions in `erc-track--switch-fallback-blockers' to decide whether
to set `erc-track-last-non-erc-buffer' to the current buffer.
(Bug#63595)
This commit is contained in:
F. Jason Park 2023-05-17 19:48:02 -07:00
parent 9bdc5c6204
commit e51e43b704
2 changed files with 9 additions and 1 deletions

View file

@ -91,6 +91,7 @@ variable `erc-input-line-position'."
(save-restriction
(widen)
(when (and erc-insert-marker
(eq (current-buffer) (window-buffer))
;; we're editing a line. Scroll.
(> (point) erc-insert-marker))
(save-excursion

View file

@ -923,13 +923,20 @@ is relative to `erc-track-switch-direction'."
(setq offset 0)))
(car (nth offset erc-modified-channels-alist))))
(defvar erc-track--switch-fallback-blockers '((derived-mode . erc-mode))
"List of `buffer-match-p' conditions OR'd together.
ERC sets `erc-track-last-non-erc-buffer' to the current buffer
unless any passes.")
(defun erc-track--switch-buffer (fun arg)
(if (not erc-track-mode)
(message (concat "Enable the ERC track module if you want to use the"
" tracking minor mode"))
(cond (erc-modified-channels-alist
;; if we're not in erc-mode, set this buffer to return to
(unless (eq major-mode 'erc-mode)
(unless (buffer-match-p (cons 'or
erc-track--switch-fallback-blockers)
(current-buffer))
(setq erc-track-last-non-erc-buffer (current-buffer)))
;; and jump to the next active channel
(if-let ((buf (erc-track-get-active-buffer arg))