diff options
Diffstat (limited to 'lisp/erc/erc-stamp.el')
| -rw-r--r-- | lisp/erc/erc-stamp.el | 53 |
1 files changed, 26 insertions, 27 deletions
diff --git a/lisp/erc/erc-stamp.el b/lisp/erc/erc-stamp.el index ead847ff73..e5d4250d14 100644 --- a/lisp/erc/erc-stamp.el +++ b/lisp/erc/erc-stamp.el @@ -1,4 +1,4 @@ -;;; erc-stamp.el --- Timestamping for Emacs IRC CLient +;;; erc-stamp.el --- Timestamping for ERC messages ;; Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc. @@ -180,11 +180,17 @@ the correct column." (integer :tag "Column number") (const :tag "Unspecified" nil))) -(defcustom erc-timestamp-right-align-by-pixel nil - "*If non-nil, insert the right timestamp based on a pixel value. -This is needed when variable-width text precedes a timestamp. +(defcustom erc-timestamp-use-align-to (and (not (featurep 'xemacs)) + (>= emacs-major-version 22) + (eq window-system 'x)) + "*If non-nil, use the :align-to display property to align the stamp. +This gives better results when variable-width characters (like +Asian language characters and math symbols) precede a timestamp. Unfortunately, it only works in Emacs 22 and when using the X -Window System." +Window System. + +A side effect of enabling this is that there will only be one +space before a right timestamp in any saved logs." :group 'erc-stamp :type 'boolean) @@ -200,18 +206,15 @@ Window System." (insert s))) (defun erc-insert-aligned (string pos) - "Insert STRING based on a fraction of the width of the buffer. -Fraction is roughly (/ POS (window-width)). + "Insert STRING at the POSth column. -If `erc-timestamp-right-align-by-pixel' is nil, insert STRING at the -POSth column, without using pixel coordinates." - (if (not erc-timestamp-right-align-by-pixel) +If `erc-timestamp-use-align-to' is t, use the :align-to display +property to get to the POSth column." + (if (not erc-timestamp-use-align-to) (indent-to pos) (insert " ") - (let ((offset (floor (* (/ (1- pos) (window-width) 1.0) - (nth 2 (window-inside-pixel-edges)))))) - (put-text-property (1- (point)) (point) 'display - `(space :align-to (,offset))))) + (put-text-property (1- (point)) (point) 'display + (list 'space ':align-to pos))) (insert string)) (defun erc-insert-timestamp-right (string) @@ -238,30 +241,26 @@ be printed just before the window-width." (forward-char -1);; before the last newline (let* ((current-window (get-buffer-window (current-buffer))) (pos (cond - (erc-timestamp-right-column - (+ erc-timestamp-right-column (length string))) + (erc-timestamp-right-column erc-timestamp-right-column) ((and (boundp 'erc-fill-mode) erc-fill-mode - (boundp 'erc-fill-column)) + (boundp 'erc-fill-column) + erc-fill-column) (1+ erc-fill-column)) - (current-window - (- (window-width current-window) - 1)) (fill-column (1+ fill-column)) (t (- (window-width) + (string-width string) 1)))) (from (point)) (col (current-column)) indent) - ;; deal with variable-width characters - (setq pos (- pos (string-width string)) - ;; The following is a kludge that works with most - ;; international input. It is now only used to calculate - ;; whether to move to the next line before inserting a - ;; stamp. - col (+ col (ceiling (/ (- col (- (point) (point-at-bol))) 1.6)))) + ;; The following is a kludge used to calculate whether to move + ;; to the next line before inserting a stamp. It allows for + ;; some margin of error if what is displayed on the line differs + ;; from the number of characters on the line. + (setq col (+ col (ceiling (/ (- col (- (point) (point-at-bol))) 1.6)))) (if (< col pos) (erc-insert-aligned string pos) (newline) |