From: Ian Kelling Date: Tue, 15 Apr 2014 00:51:12 +0000 (-0700) Subject: Several improvements and bug fixes. X-Git-Tag: v0.1~9 X-Git-Url: https://iankelling.org/git/?p=visible-mark;a=commitdiff_plain;h=8f01d2f1ef31eb4935a72db16bfaaf0ee66a220f Several improvements and bug fixes. * Fixed a few bugs around edge cases like having 2 marks on top of each other. * Added ability to show marks in the forward direction of the mark ring. * Improved documentation and customize interface. * Previously the only licensing was a public domain dedication on emacswiki. 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If your program is a subroutine library, you +may consider it more useful to permit linking proprietary applications with +the library. If this is what you want to do, use the GNU Lesser General +Public License instead of this License. But first, please read +. diff --git a/visible-mark.el b/visible-mark.el index 9318403..557e9c4 100644 --- a/visible-mark.el +++ b/visible-mark.el @@ -1,12 +1,54 @@ ;;; visible-mark.el --- Make marks visible. +;; Copyright (C) 2014 by Ian Kelling + +;; Author: Several people, most recently Ian Kelling + +;; This program is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation, either version 3 of the License, or +;; (at your option) any later version. + +;; This program is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with this program. If not, see . + + ;;; Commentary: -;; This was hacked together by Jorgen Schäfer -;; And hacked again by Yann Hodique -;; Donated to the public domain. Use at your own risk. +;; Minor mode to display custom overlay faces on mark location(s). +;; Can display marks from the mark ring in the normal backward direction +;; in the forward direction. +;; +;; Example installation: +;; +;; 1. Put this file in Emacs's load-path +;; +;; 2. add to init file +;; (require 'visible-mark) +;; +;; ;; example of customizations. +;; ;; This could be set via M-x customize-group visible-mark +;; (setq visible-mark-max 2) +;; (defface my-visible-mark-face-2 +;; `((t (:background "orange" :foreground "black"))) +;; "Face for the mark." +;; :group 'visible-mark) +;; (setq visible-mark-faces `(visible-mark-face1 my-visible-mark-face-2)) +;; +;; (global-visible-mark-mode +1) +;; +;; +;; Additional useful functions like unpoping the mark are listed +;; http://www.emacswiki.org/emacs/MarkCommands +;; and http://www.emacswiki.org/emacs/VisibleMark -;;; History: +;;; Pre-git history: +;; ;; 2008-02-21 MATSUYAMA Tomohiro ;; ;; * visible-mark.el: Added function to inhibit trailing overlay. @@ -18,6 +60,15 @@ ;; Yann Hodique and Jorgen Schäfer are original authors. ;; Added function to make multiple marks visible. ;; +;; +;; Known bugs +;; +;; Observed in circe, when the buffer has a right margin, and there +;; is a mark at the beginning of a line, any text in the margin on that line +;; gets styled with the mark's face. May also happen for left margins, but +;; haven't tested yet. +;; +;; Patches / pull requests welcome. ;;; Code: @@ -29,8 +80,8 @@ :group 'convenience :prefix "visible-mark-") -(defface visible-mark-face - `((((type tty) (class color)) +(defface visible-mark-active + '((((type tty) (class color)) (:background "gray" :foreground "black")) (((type tty) (class mono)) (:inverse-video t)) @@ -39,33 +90,71 @@ (((class color) (background light)) (:background "grey80")) (t (:background "gray"))) - "Face for the mark." + "Face for the active mark." :group 'visible-mark) +(defface visible-mark-face1 + '((((type tty) (class mono))) + (t (:background "light salmon"))) + "Example face which can be customized and added to subsequent face lists." + :group 'visible-mark) + +(defface visible-mark-face2 + '((((type tty) (class mono))) + (t (:background "light goldenrod"))) + "Example face which can be customized and added to subsequent face lists." + :group 'visible-mark) + +(defface visible-mark-forward-face1 + '((((type tty) (class mono))) + (t (:background "pale green"))) + "Example face which can be customized and added to subsequent face lists." + :group 'visible-mark) + +(defface visible-mark-forward-face2 + nil + "Placeholder face for customization and addition to subsequent face lists." + :group 'visible-mark) + + (defvar visible-mark-overlays nil "The overlays used in this buffer.") (make-variable-buffer-local 'visible-mark-overlays) (defcustom visible-mark-inhibit-trailing-overlay t - "If non-nil, inhibit trailing overlay with underline face." + "If non-nil, inhibit the extension of an overlay at the end of a line +to the window margin." :group 'visible-mark :type 'boolean) + (defcustom visible-mark-max 1 - "A number of mark to be visible." + "The number of marks in the backward direction to be visible." + :group 'visible-mark + :type 'integer) + +(defcustom visible-mark-forward-max 0 + "The number of marks in the forward direction to be visible." :group 'visible-mark :type 'integer) (defcustom visible-mark-faces nil - "A list of mark faces." + "A list of mark faces for marks in the backward direction. +If visible-mark-max is greater than the amount of visible-mark-faces, +the last defined face will be reused." + :group 'visible-mark + :type '(repeat face)) + +(defcustom visible-mark-forward-faces nil + "A list of mark faces for marks in the forward direction." :group 'visible-mark :type '(repeat face)) (defcustom global-visible-mark-mode-exclude-alist nil - "A list of buffer names to be excluded" + "A list of buffer names to be excluded." :group 'visible-mark :type '(repeat regexp)) - + (defun visible-mark-initialize-overlays () (mapc (lambda (x) @@ -73,7 +162,7 @@ (delete-overlay x))) (overlays-in (point-min) (point-max))) (let (overlays) - (dotimes (i visible-mark-max) + (dotimes (i (+ visible-mark-max visible-mark-forward-max)) (let ((overlay (make-overlay (point-min) (point-min)))) (overlay-put overlay 'category 'visible-mark) (push overlay overlays))) @@ -90,46 +179,50 @@ found)) (defun visible-mark-move-overlays () - "Move the overlay in `visible-mark-overlay' to a new position." - (mapc (lambda (x) (move-overlay x 0 0)) + "Update overlays in `visible-mark-overlays'. This is run in the `post-command-hook'" + (mapc (lambda (x) (delete-overlay x)) visible-mark-overlays) (let ((marks (cons (mark-marker) mark-ring)) - (overlays visible-mark-overlays)) + (overlays visible-mark-overlays) + (faces visible-mark-faces) + (faces-forward visible-mark-forward-faces)) + (if mark-active (setq faces (cons 'visible-mark-active (cdr faces)))) (dotimes (i visible-mark-max) - (let* ((mark (car-safe marks)) - (overlay (car overlays)) - (pos (and mark (marker-position mark)))) - (when pos - (cond - ((and visible-mark-inhibit-trailing-overlay - (save-excursion (goto-char pos) (eolp))) - (overlay-put overlay 'face nil) - (if (visible-mark-find-overlay-at pos) - (progn (overlay-put overlay 'before-string nil) - (move-overlay overlay 0 0)) - (overlay-put overlay 'before-string - (propertize - " " - 'face (or (nth i visible-mark-faces) 'visible-mark-face) - 'cursor 0)) - (move-overlay overlay pos (1+ pos)))) - (t - (overlay-put overlay 'before-string nil) - (overlay-put overlay 'face - (or (nth i visible-mark-faces) 'visible-mark-face)) - (move-overlay overlay pos (1+ pos))))) - (setq marks (cdr marks))) - (setq overlays (cdr overlays))))) + (visible-mark-move-overlay (pop overlays) (pop marks) (car faces)) + (if (cdr faces) (pop faces))) + (dotimes (i visible-mark-forward-max) + (visible-mark-move-overlay (pop overlays) (car (last marks (1+ i))) (car faces-forward)) + (if (cdr faces-forward) (pop faces-forward))))) + +(defun visible-mark-move-overlay (overlay mark face) + "Set OVERLAY to position of MARK and display of FACE." + (let ((pos (and mark (marker-position mark)))) + (when (and pos (not (equal (point) pos))) + (cond + ((and + visible-mark-inhibit-trailing-overlay + (save-excursion (goto-char pos) (eolp))) + (overlay-put overlay 'face nil) + (if (visible-mark-find-overlay-at pos) + (progn (overlay-put overlay 'before-string nil)) + (overlay-put overlay 'before-string + (propertize + " " + 'face face)) + (move-overlay overlay pos (1+ pos)))) + (t + (overlay-put overlay 'before-string nil) + (overlay-put overlay 'face face) + (move-overlay overlay pos (1+ pos))))))) (require 'easy-mmode) - (defun visible-mark-mode-maybe () (when (cond ((minibufferp (current-buffer)) nil) - ((flet ((fun (arg) - (if (null arg) nil - (or (string-match (car arg) (buffer-name)) - (fun (cdr arg)))))) + ((cl-flet ((fun (arg) + (if (null arg) nil + (or (string-match (car arg) (buffer-name)) + (fun (cdr arg)))))) (fun global-visible-mark-mode-exclude-alist)) nil) (t t)) (visible-mark-mode t)))