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ERC right stamps: also use latest buffer's window's width (Bug#44140)

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* lisp/erc/erc-stamp.el (erc-insert-timestamp-right): Use latest
buffer's window's width to position the timestamp, if both
`erc-timestamp-right-column' and `erc-fill-column' are not set (or
`erc-fill-mode' is off).  This is what the documentation says, but was
not implemented.  Also fix the bug of using selected window's width
instead of the (or some) window showing the buffer.  The latest
window's width is saved in `erc-timestamp-last-window-width' and used
when the buffer is no more shown.  In case the buffer was never shown,
which I'm not sure can happen, either use `fill-column' if set, or
give up on aligning and just output the timestamp (modulo the kludge)
right after message text.  While here, fix the off by one calculation
of point start when the reference is the window's width.
This commit is contained in:
Olivier Certner 2021-07-06 12:35:43 +02:00 committed by Amin Bandali
parent 75ecce4323
commit b77f6af24e
No known key found for this signature in database
GPG Key ID: 8B44A0CDC7B956F2
1 changed files with 31 additions and 16 deletions
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47
lisp/erc/erc-stamp.el
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@ -192,6 +192,11 @@ or `erc-send-modify-hook'."
(list (lambda (_window _before dir)
(erc-echo-timestamp dir ct))))))))
(defvar-local erc-timestamp-last-window-width nil
"Stores the width of the last window that showed the current
buffer. This is used by `erc-insert-timestamp-right' when the
current buffer is not shown in any window.")
(defvar erc-timestamp-last-inserted nil
"Last timestamp inserted into the buffer.")
(make-variable-buffer-local 'erc-timestamp-last-inserted)
@ -267,27 +272,32 @@ property to get to the POSth column."
(defun erc-insert-timestamp-right (string)
"Insert timestamp on the right side of the screen.
STRING is the timestamp to insert. The function is a possible value
for `erc-insert-timestamp-function'.
STRING is the timestamp to insert. This function is a possible
value for `erc-insert-timestamp-function'.
If `erc-timestamp-only-if-changed-flag' is nil, a timestamp is always
printed. If this variable is non-nil, a timestamp is only printed if
it is different from the last.
If `erc-timestamp-only-if-changed-flag' is nil, a timestamp is
always printed. If this variable is non-nil, a timestamp is only
printed if it is different from the last.
If `erc-timestamp-right-column' is set, its value will be used as the
column at which the timestamp is to be printed. If it is nil, and
`erc-fill-mode' is active, then the timestamp will be printed just
before `erc-fill-column'. Otherwise, if the current buffer is
shown in a window, that window's width is used. If the buffer is
not shown, and `fill-column' is set, then the timestamp will be
printed just `fill-column'. As a last resort, the timestamp will
be printed just before the window-width."
If `erc-timestamp-right-column' is set, its value will be used as
the column at which the timestamp is to be printed. If it is
nil, and `erc-fill-mode' is active, then the timestamp will be
printed just before `erc-fill-column'. Otherwise, if the current
buffer is shown in a window, that window's width is used as the
right boundary. In case multiple windows show the buffer, the
width of the most recently selected one is used. If the buffer
is not shown, the timestamp will be printed just before the
window width of the last window that showed it. If the buffer
was never shown, and `fill-column' is set, it will be printed
just before `fill-column'. As a last resort, timestamp will be
printed just after each line's text (no alignment)."
(unless (and erc-timestamp-only-if-changed-flag
(string-equal string erc-timestamp-last-inserted))
(setq erc-timestamp-last-inserted string)
(goto-char (point-max))
(forward-char -1);; before the last newline
(forward-char -1) ; before the last newline
(let* ((str-width (string-width string))
window ; used in computation of `pos' only
(pos (cond
(erc-timestamp-right-column erc-timestamp-right-column)
((and (boundp 'erc-fill-mode)
@ -295,10 +305,15 @@ be printed just before the window-width."
(boundp 'erc-fill-column)
erc-fill-column)
(1+ (- erc-fill-column str-width)))
((setq window (get-buffer-window nil t))
(setq erc-timestamp-last-window-width
(window-width window))
(- erc-timestamp-last-window-width str-width))
(erc-timestamp-last-window-width
(- erc-timestamp-last-window-width str-width))
(fill-column
(1+ (- fill-column str-width)))
(t
(- (window-width) str-width 1))))
(t (current-column))))
(from (point))
(col (current-column)))
;; The following is a kludge used to calculate whether to move