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5cf8d60e0d
* lisp/desktop.el (desktop-no-desktop-file-hook): * lisp/dired-x.el (dired-mark-sexp): * lisp/dired.el (dired-make-directory-clickable) (dired-map-over-marks, dired-file-name-at-point) (dired-save-positions, dired-buffers-for-dir) (dired-buffers-for-dir-or-subdir, dired-fun-in-all-buffers) (dired-remove-entry, dired-delete-entry, dired-jump): * lisp/files.el (save-buffer): * lisp/find-dired.el (find-ls-option): * lisp/hilit-chg.el: * lisp/locate.el (locate-mode): * lisp/msb.el (msb-dired-item-handler, msb-sort-by-directory): * lisp/printing.el (pr-ps-printer-alist, pr-ps-utility-alist): * lisp/uniquify.el (uniquify-trailing-separator-p): * lisp/wdired.el (wdired, wdired-change-to-dired-mode, wdired-exit): * lisp/woman.el (woman-dired-define-keys, woman-dired-find-file): Capitalize "Dired" and "Lisp" in docstrings. Found with checkdoc.
1147 lines
38 KiB
EmacsLisp
1147 lines
38 KiB
EmacsLisp
;;; msb.el --- customizable buffer-selection with multiple menus -*- lexical-binding: t; -*-
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;; Copyright (C) 1993-1995, 1997-2024 Free Software Foundation, Inc.
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;; Author: Lars Lindberg <lars.lindberg@home.se>
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;; Maintainer: emacs-devel@gnu.org
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;; Created: 8 Oct 1993
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;; Lindberg's last update version: 3.34
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;; Keywords: mouse buffer menu
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Purpose of this package:
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;; 1. Offer a function for letting the user choose buffer,
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;; not necessarily for switching to it.
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;; 2. Make a better mouse-buffer-menu. This is done as a global
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;; minor mode, msb-mode.
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;;
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;; Customization:
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;; Look at the variable `msb-menu-cond' for deciding what menus you
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;; want. It's not that hard to customize, despite my not-so-good
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;; doc-string. Feel free to send me a better doc-string.
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;; There are some constants for you to try here:
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;; msb--few-menus
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;; msb--very-many-menus (default)
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;;
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;; Look at the variable `msb-item-handling-function' for customization
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;; of the appearance of every menu item. Try for instance setting
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;; it to `msb-alon-item-handler'.
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;;
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;; Look at the variable `msb-item-sort-function' for customization
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;; of sorting the menus. Set it to t for instance, which means no
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;; sorting - you will get latest used buffer first.
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;;
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;; Also check out the variable `msb-display-invisible-buffers-p'.
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;; Known bugs:
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;; - Files-by-directory
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;; + No possibility to show client/changed buffers separately.
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;; + All file buffers only appear in a file sub-menu, they will
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;; for instance not appear in the Mail sub-menu.
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;; Future enhancements:
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;;; Thanks goes to
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;; Mark Brader <msb@sq.com>
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;; Jim Berry <m1jhb00@FRB.GOV>
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;; Hans Chalupsky <hans@cs.Buffalo.EDU>
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;; Larry Rosenberg <ljr@ictv.com>
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;; Will Henney <will@astroscu.unam.mx>
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;; Jari Aalto <jaalto@tre.tele.nokia.fi>
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;; Michael Kifer <kifer@cs.stonybrook.edu>
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;; Gael Marziou <gael@gnlab030.grenoble.hp.com>
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;; Dave Gillespie <daveg@thymus.synaptics.com>
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;; Alon Albert <alon@milcse.rtsg.mot.com>
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;; Kevin Broadey, <KevinB@bartley.demon.co.uk>
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;; Ake Stenhof <ake@cadpoint.se>
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;; Richard Stallman <rms@gnu.org>
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;; Steve Fisk <fisk@medved.bowdoin.edu>
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;; This version turned into a global minor mode and subsequently
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;; hacked on by Dave Love.
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;;; Code:
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(eval-when-compile (require 'cl-lib))
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;;
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;; Some example constants to be used for `msb-menu-cond'. See that
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;; variable for more information. Please note that if the condition
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;; returns `multi', then the buffer can appear in several menus.
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;;
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(defconst msb--few-menus
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'(((and (boundp 'server-buffer-clients)
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server-buffer-clients
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'multi)
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3030
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"Clients (%d)")
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((and msb-display-invisible-buffers-p
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(msb-invisible-buffer-p)
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'multi)
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3090
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"Invisible buffers (%d)")
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((eq major-mode 'dired-mode)
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2010
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"Dired (%d)"
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msb-dired-item-handler
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msb-sort-by-directory)
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((eq major-mode 'Man-mode)
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4090
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"Manuals (%d)")
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((eq major-mode 'eww-mode)
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4020
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"WWW (%d)")
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((or (memq major-mode
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'(rmail-mode rmail-edit-mode vm-summary-mode vm-mode mail-mode))
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(memq major-mode '(mh-letter-mode mh-show-mode mh-folder-mode))
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(memq major-mode
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'(gnus-summary-mode message-mode gnus-group-mode
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gnus-article-mode score-mode gnus-browse-killed-mode)))
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4010
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"Mail (%d)")
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((not buffer-file-name)
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4099
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"Buffers (%d)")
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('no-multi
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1099
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"Files (%d)")))
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(defconst msb--very-many-menus
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'(((and (boundp 'server-buffer-clients)
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server-buffer-clients
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'multi)
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1010
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"Clients (%d)")
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((and (boundp 'vc-mode) vc-mode 'multi)
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1020
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"Version Control (%d)")
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((and buffer-file-name
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(buffer-modified-p)
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'multi)
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1030
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"Changed files (%d)")
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((and (get-buffer-process (current-buffer))
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'multi)
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1040
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"Processes (%d)")
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((and msb-display-invisible-buffers-p
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(msb-invisible-buffer-p)
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'multi)
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1090
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"Invisible buffers (%d)")
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((eq major-mode 'dired-mode)
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2010
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"Dired (%d)"
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;; Note this different menu-handler
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msb-dired-item-handler
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;; Also note this item-sorter
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msb-sort-by-directory)
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((eq major-mode 'Man-mode)
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5030
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"Manuals (%d)")
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((eq major-mode 'eww-mode)
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5020
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"WWW (%d)")
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((or (memq major-mode
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'(rmail-mode rmail-edit-mode vm-summary-mode vm-mode mail-mode))
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(memq major-mode '(mh-letter-mode mh-show-mode mh-folder-mode))
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(memq major-mode '(gnus-summary-mode message-mode gnus-group-mode
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gnus-article-mode score-mode
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gnus-browse-killed-mode)))
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5010
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"Mail (%d)")
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;; Catchup for all non-file buffers
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((and (not buffer-file-name)
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'no-multi)
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5099
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"Other non-file buffers (%d)")
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((and (string-match "/\\.[^/]*$" buffer-file-name)
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'multi)
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3090
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"Hidden Files (%d)")
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((memq major-mode '(c-mode c++-mode))
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3010
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"C/C++ Files (%d)")
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((eq major-mode 'emacs-lisp-mode)
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3020
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"Elisp Files (%d)")
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((eq major-mode 'latex-mode)
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3030
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"LaTeX Files (%d)")
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('no-multi
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3099
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"Other files (%d)")))
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;;;
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;;; Customizable variables
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;;;
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(defgroup msb nil
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"Customizable buffer-selection with multiple menus."
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:prefix "msb-"
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:group 'mouse)
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(defun msb-custom-set (symbol value)
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"Set the value of custom variables for msb."
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(set symbol value)
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(if (and (featurep 'msb) msb-mode)
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;; wait until package has been loaded before bothering to update
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;; the buffer lists.
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(msb-menu-bar-update-buffers t)))
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(defcustom msb-menu-cond msb--very-many-menus
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"List of criteria for splitting the mouse buffer menu.
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The elements in the list should be of this type:
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(CONDITION MENU-SORT-KEY MENU-TITLE ITEM-HANDLING-FN ITEM-SORT-FN).
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When making the split, the buffers are tested one by one against the
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CONDITION, just like a Lisp cond: When hitting a true condition, the
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other criteria are *not* tested and the buffer name will appear in the
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menu with the menu-title corresponding to the true condition.
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If the condition returns the symbol `multi', then the buffer will be
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added to this menu *and* tested for other menus too. If it returns
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`no-multi', then the buffer will only be added if it hasn't been added
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to any other menu.
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During this test, the buffer in question is the current buffer, and
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the test is surrounded by calls to `save-excursion' and
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`save-match-data'.
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The categories are sorted by MENU-SORT-KEY. Smaller keys are on top.
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A value of nil means don't display this menu.
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MENU-TITLE is really a format. If you add %d in it, the %d is
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replaced with the number of items in that menu.
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ITEM-HANDLING-FN is optional. If it is supplied and is a function,
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then it is used for displaying the items in that particular buffer
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menu, otherwise the function pointed out by
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`msb-item-handling-function' is used.
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ITEM-SORT-FN is also optional.
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If it is not supplied, the function pointed out by
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`msb-item-sort-function' is used.
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If it is nil, then no sort takes place and the buffers are presented
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in least-recently-used order.
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If it is t, then no sort takes place and the buffers are presented in
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most-recently-used order.
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If it is supplied and non-nil and not t than it is used for sorting
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the items in that particular buffer menu.
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Note1: There should always be a `catch-all' as last element, in this
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list. That is an element like (t TITLE ITEM-HANDLING-FUNCTION).
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Note2: A buffer menu appears only if it has at least one buffer in it.
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Note3: If you have a CONDITION that can't be evaluated you will get an
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error every time you do \\[msb]."
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:type `(choice (const :tag "long" :value ,msb--very-many-menus)
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(const :tag "short" :value ,msb--few-menus)
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(sexp :tag "user"))
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:set #'msb-custom-set)
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(defcustom msb-modes-key 4000
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"The sort key for files sorted by mode."
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:type 'integer
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:set #'msb-custom-set
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:version "20.3")
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(defcustom msb-separator-diff 100
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"Non-nil means use separators.
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The separators will appear between all menus that have a sorting key
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that differs by this value or more."
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:type '(choice integer (const nil))
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:set #'msb-custom-set)
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(defvar msb-files-by-directory-sort-key 0
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"The sort key for files sorted by directory.")
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(defcustom msb-max-menu-items 15
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"The maximum number of items in a menu.
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If this variable is set to 15 for instance, then the submenu will be
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split up in minor parts, 15 items each. A value of nil means no limit."
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:type '(choice integer (const nil))
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:set #'msb-custom-set)
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(defcustom msb-max-file-menu-items 10
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"The maximum number of items from different directories.
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When the menu is of type `file by directory', this is the maximum
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number of buffers that are clumped together from different
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directories.
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Set this to 1 if you want one menu per directory instead of clumping
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them together.
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If the value is not a number, then the value 10 is used."
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:type 'integer
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:set #'msb-custom-set)
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(defcustom msb-most-recently-used-sort-key -1010
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"Where should the menu with the most recently used buffers be placed?"
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:type 'integer
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:set #'msb-custom-set)
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(defcustom msb-display-most-recently-used 15
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"How many buffers should be in the most-recently-used menu.
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No buffers at all if less than 1 or nil (or any non-number)."
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:type 'natnum
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:set #'msb-custom-set)
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(defcustom msb-most-recently-used-title "Most recently used (%d)"
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"The title for the most-recently-used menu."
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:type 'string
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:set #'msb-custom-set)
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(defvar msb-horizontal-shift-function (lambda () 0)
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"Function that specifies how many pixels to shift the top menu leftwards.")
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(defcustom msb-display-invisible-buffers-p nil
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"Show invisible buffers or not.
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Non-nil means that the buffer menu should include buffers that have
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names that starts with a space character."
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:type 'boolean
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:set #'msb-custom-set)
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(defvar msb-item-handling-function 'msb-item-handler
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"The appearance of a buffer menu.
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The default function to call for handling the appearance of a menu
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item. It should take two arguments, BUFFER and MAX-BUFFER-NAME-LENGTH,
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where the latter is the max length of all buffer names.
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The function should return the string to use in the menu.
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When the function is called, BUFFER is the current buffer. This
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function is called for items in the variable `msb-menu-cond' that have
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nil as ITEM-HANDLING-FUNCTION. See `msb-menu-cond' for more
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information.")
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(defcustom msb-item-sort-function 'msb-sort-by-name
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"The order of items in a buffer menu.
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The default function to call for handling the order of items in a menu
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item. This function is called like a sort function. The items look
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like (ITEM-NAME . BUFFER).
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ITEM-NAME is the name of the item that will appear in the menu.
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BUFFER is the buffer, this is not necessarily the current buffer.
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Set this to nil or t if you don't want any sorting (faster)."
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:type '(choice (const msb-sort-by-name)
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(const :tag "Newest first" t)
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(const :tag "Oldest first" nil))
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:set #'msb-custom-set)
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(defcustom msb-files-by-directory nil
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"Non-nil means that files should be sorted by directory.
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This is instead of the groups in `msb-menu-cond'."
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:type 'boolean
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:set #'msb-custom-set)
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(defcustom msb-after-load-hook nil
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"Hook run after the msb package has been loaded."
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:type 'hook
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:set #'msb-custom-set)
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(make-obsolete-variable 'msb-after-load-hook
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"use `with-eval-after-load' instead." "28.1")
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;;;
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;;; Internal variables
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;;;
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;; The last calculated menu.
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(defvar msb--last-buffer-menu nil)
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;; If this is non-nil, then it is a string that describes the error.
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(defvar msb--error nil)
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;;;
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;;; Some example function to be used for `msb-item-handling-function'.
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;;;
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(defun msb-item-handler (_buffer &optional _maxbuf)
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"Create one string item, concerning BUFFER, for the buffer menu.
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The item looks like:
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*% <buffer-name>
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The `*' appears only if the buffer is marked as modified.
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The `%' appears only if the buffer is read-only.
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Optional second argument MAXBUF is completely ignored."
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(let ((name (buffer-name))
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(modified (if (buffer-modified-p) "*" " "))
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(read-only (if buffer-read-only "%" " ")))
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(format "%s%s %s" modified read-only name)))
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;; `dired' can be called with a list of the form (directory file1 file2 ...)
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;; which causes `dired-directory' to be in the same form.
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(defun msb--dired-directory ()
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(cond ((stringp dired-directory)
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(abbreviate-file-name (expand-file-name dired-directory)))
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((consp dired-directory)
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(abbreviate-file-name (expand-file-name (car dired-directory))))
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(t
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(error "Unknown type of `dired-directory' in buffer %s"
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(buffer-name)))))
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(defun msb-dired-item-handler (_buffer &optional _maxbuf)
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"Create one string item, concerning a Dired BUFFER, for the buffer menu.
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The item looks like:
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*% <buffer-name>
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The `*' appears only if the buffer is marked as modified.
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The `%' appears only if the buffer is read-only.
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Optional second argument MAXBUF is completely ignored."
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(let ((name (msb--dired-directory))
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(modified (if (buffer-modified-p) "*" " "))
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(read-only (if buffer-read-only "%" " ")))
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(format "%s%s %s" modified read-only name)))
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(defun msb-alon-item-handler (buffer maxbuf)
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"Create one string item for the buffer menu.
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The item looks like:
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<buffer-name> *%# <file-name>
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The `*' appears only if the buffer is marked as modified.
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The `%' appears only if the buffer is read-only.
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The `#' appears only version control file (SCCS/RCS)."
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(format (format "%%%ds %%s%%s%%s %%s" maxbuf)
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(buffer-name buffer)
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(if (buffer-modified-p) "*" " ")
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(if buffer-read-only "%" " ")
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(if (and (boundp 'vc-mode) vc-mode) "#" " ")
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(or buffer-file-name "")))
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;;;
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;;; Some example function to be used for `msb-item-sort-function'.
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;;;
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(defun msb-sort-by-name (item1 item2)
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"Sort the items ITEM1 and ITEM2 by their `buffer-name'.
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An item looks like (NAME . BUFFER)."
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(string-lessp (buffer-name (cdr item1))
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(buffer-name (cdr item2))))
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(defun msb-sort-by-directory (item1 item2)
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"Sort the items ITEM1 and ITEM2 by directory name. Made for Dired.
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An item look like (NAME . BUFFER)."
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(string-lessp (with-current-buffer (cdr item1)
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(msb--dired-directory))
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(with-current-buffer (cdr item2)
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(msb--dired-directory))))
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;;;
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;;; msb
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;;
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;; This function can be used instead of (mouse-buffer-menu EVENT)
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;; function in "mouse.el".
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;;
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(defun msb (event)
|
|
"Pop up several menus of buffers for selection with the mouse.
|
|
This command switches buffers in the window that you clicked on, and
|
|
selects that window.
|
|
|
|
See the function `mouse-select-buffer' and the variable
|
|
`msb-menu-cond' for more information about how the menus are split."
|
|
(interactive "e")
|
|
(let ((old-window (selected-window))
|
|
(window (posn-window (event-start event)))
|
|
early-release)
|
|
(unless (framep window) (select-window window))
|
|
;; This `sit-for' magically makes the menu stay up if the mouse
|
|
;; button is released within 0.1 second.
|
|
(setq early-release (not (sit-for 0.1 t)))
|
|
(let ((buffer (mouse-select-buffer event)))
|
|
(if buffer
|
|
(switch-to-buffer buffer)
|
|
(select-window old-window)))
|
|
;; If the above `sit-for' was interrupted by a mouse-up, avoid
|
|
;; generating a drag event.
|
|
(if (and early-release (memq 'down (event-modifiers last-input-event)))
|
|
(discard-input)))
|
|
nil)
|
|
|
|
;;;
|
|
;;; Some supportive functions
|
|
;;;
|
|
(defun msb-invisible-buffer-p (&optional buffer)
|
|
"Return t if optional BUFFER is an \"invisible\" buffer.
|
|
If the argument is left out or nil, then the current buffer is considered."
|
|
(and (> (length (buffer-name buffer)) 0)
|
|
(eq ?\s (aref (buffer-name buffer) 0))))
|
|
|
|
(defun msb--strip-dir (dir)
|
|
"Strip one hierarchy level from the end of DIR."
|
|
(file-name-directory (directory-file-name dir)))
|
|
|
|
;; Create an alist with all buffers from LIST that lies under the same
|
|
;; directory will be in the same item as the directory name.
|
|
;; ((DIR1 . (BUFFER-1 BUFFER-2 ...)) (DIR2 . (BUFFER-K BUFFER-K+1...)) ...)
|
|
(defun msb--init-file-alist (list)
|
|
(let ((buffer-alist
|
|
;; Make alist that looks like
|
|
;; ((DIR-1 BUFFER-1) (DIR-2 BUFFER-2) ...)
|
|
;; sorted on DIR-x
|
|
(sort
|
|
(apply #'nconc
|
|
(mapcar
|
|
(lambda (buffer)
|
|
(let ((file-name (expand-file-name
|
|
(buffer-file-name buffer))))
|
|
(when file-name
|
|
(list (cons (msb--strip-dir file-name) buffer)))))
|
|
list))
|
|
(lambda (item1 item2)
|
|
(string< (car item1) (car item2))))))
|
|
;; Now clump buffers together that have the same directory name
|
|
;; Make alist that looks like
|
|
;; ((DIR1 . (BUFFER-1 BUFFER-2 ...)) (DIR2 . (BUFFER-K)) ...)
|
|
(let ((dir nil)
|
|
(buffers nil))
|
|
(nconc
|
|
(apply
|
|
#'nconc
|
|
(mapcar (lambda (item)
|
|
(cond
|
|
((equal dir (car item))
|
|
;; The same dir as earlier:
|
|
;; Add to current list of buffers.
|
|
(push (cdr item) buffers)
|
|
;; This item should not be added to list
|
|
nil)
|
|
(t
|
|
;; New dir
|
|
(let ((result (and dir (cons dir buffers))))
|
|
(setq dir (car item))
|
|
(setq buffers (list (cdr item)))
|
|
;; Add the last result the list.
|
|
(and result (list result))))))
|
|
buffer-alist))
|
|
;; Add the last result to the list
|
|
(list (cons dir buffers))))))
|
|
|
|
(defun msb--format-title (top-found-p dir number-of-items)
|
|
"Format a suitable title for the menu item."
|
|
(format (if top-found-p "%s... (%d)" "%s (%d)")
|
|
(abbreviate-file-name dir) number-of-items))
|
|
|
|
;; Variables for debugging.
|
|
(defvar msb--choose-file-menu-list)
|
|
(defvar msb--choose-file-menu-arg-list)
|
|
|
|
(defun msb--choose-file-menu (list)
|
|
"Choose file-menu with respect to directory for every buffer in LIST."
|
|
(setq msb--choose-file-menu-arg-list list)
|
|
(let ((buffer-alist (msb--init-file-alist list))
|
|
(final-list nil)
|
|
(max-clumped-together (if (numberp msb-max-file-menu-items)
|
|
msb-max-file-menu-items
|
|
10))
|
|
(top-found-p nil)
|
|
(last-dir nil)
|
|
first rest dir buffers old-dir)
|
|
;; Prepare for looping over all items in buffer-alist
|
|
(setq first (car buffer-alist)
|
|
rest (cdr buffer-alist)
|
|
dir (car first)
|
|
buffers (cdr first))
|
|
(setq msb--choose-file-menu-list (copy-sequence rest))
|
|
;; This big loop tries to clump buffers together that have a
|
|
;; similar name. Remember that buffer-alist is sorted based on the
|
|
;; directory name of the buffers' visited files.
|
|
(while rest
|
|
(let ((found-p nil)
|
|
(tmp-rest rest)
|
|
item)
|
|
(setq item (car tmp-rest))
|
|
;; Clump together the "rest"-buffers that have a dir that is
|
|
;; a subdir of the current one.
|
|
(while (and tmp-rest
|
|
(<= (length buffers) max-clumped-together)
|
|
(>= (length (car item)) (length dir))
|
|
;; `completion-ignore-case' seems to default to t
|
|
;; on the systems with case-insensitive file names.
|
|
(eq t (compare-strings dir 0 nil
|
|
(car item) 0 (length dir)
|
|
completion-ignore-case)))
|
|
(setq found-p t)
|
|
(setq buffers (append buffers (cdr item))) ;nconc is faster than append
|
|
(setq tmp-rest (cdr tmp-rest)
|
|
item (car tmp-rest)))
|
|
(cond
|
|
((> (length buffers) max-clumped-together)
|
|
;; Oh, we failed. Too many buffers clumped together.
|
|
;; Just use the original ones for the result.
|
|
(setq last-dir (car first))
|
|
(push (cons (msb--format-title top-found-p
|
|
(car first)
|
|
(length (cdr first)))
|
|
(cdr first))
|
|
final-list)
|
|
(setq top-found-p nil)
|
|
(setq first (car rest)
|
|
rest (cdr rest)
|
|
dir (car first)
|
|
buffers (cdr first)))
|
|
(t
|
|
;; The first pass of clumping together worked out, go ahead
|
|
;; with this result.
|
|
(when found-p
|
|
(setq top-found-p t)
|
|
(setq first (cons dir buffers)
|
|
rest tmp-rest))
|
|
;; Now see if we can clump more buffers together if we go up
|
|
;; one step in the file hierarchy.
|
|
;; If dir isn't changed by msb--strip-dir, we are looking
|
|
;; at the machine name component of an ange-ftp filename.
|
|
(setq old-dir dir)
|
|
(setq dir (msb--strip-dir dir)
|
|
buffers (cdr first))
|
|
(if (equal old-dir dir)
|
|
(setq last-dir dir))
|
|
(when (and last-dir
|
|
(or (and (>= (length dir) (length last-dir))
|
|
(eq t (compare-strings
|
|
last-dir 0 nil dir 0
|
|
(length last-dir)
|
|
completion-ignore-case)))
|
|
(and (< (length dir) (length last-dir))
|
|
(eq t (compare-strings
|
|
dir 0 nil last-dir 0 (length dir)
|
|
completion-ignore-case)))))
|
|
;; We have reached the same place in the file hierarchy as
|
|
;; the last result, so we should quit at this point and
|
|
;; take what we have as result.
|
|
(push (cons (msb--format-title top-found-p
|
|
(car first)
|
|
(length (cdr first)))
|
|
(cdr first))
|
|
final-list)
|
|
(setq top-found-p nil)
|
|
(setq first (car rest)
|
|
rest (cdr rest)
|
|
dir (car first)
|
|
buffers (cdr first)))))))
|
|
;; Now take care of the last item.
|
|
(when first
|
|
(push (cons (msb--format-title top-found-p
|
|
(car first)
|
|
(length (cdr first)))
|
|
(cdr first))
|
|
final-list))
|
|
(setq top-found-p nil)
|
|
(nreverse final-list)))
|
|
|
|
(defun msb--create-function-info (menu-cond-elt)
|
|
"Create a vector from an element MENU-COND-ELT of `msb-menu-cond'.
|
|
This takes the form:
|
|
[BUFFER-LIST-VARIABLE CONDITION MENU-SORT-KEY MENU-TITLE ITEM-HANDLER SORTER]
|
|
See `msb-menu-cond' for a description of its elements."
|
|
(let* ((list-symbol (make-symbol "-msb-buffer-list"))
|
|
(tmp-ih (and (> (length menu-cond-elt) 3)
|
|
(nth 3 menu-cond-elt)))
|
|
(item-handler (if (and tmp-ih (fboundp tmp-ih))
|
|
tmp-ih
|
|
msb-item-handling-function))
|
|
(tmp-s (if (> (length menu-cond-elt) 4)
|
|
(nth 4 menu-cond-elt)
|
|
msb-item-sort-function))
|
|
(sorter (if (or (fboundp tmp-s)
|
|
(null tmp-s)
|
|
(eq tmp-s t))
|
|
tmp-s
|
|
msb-item-sort-function)))
|
|
(when (< (length menu-cond-elt) 3)
|
|
(error "Wrong format of msb-menu-cond"))
|
|
(when (and (> (length menu-cond-elt) 3)
|
|
(not (fboundp tmp-ih)))
|
|
(signal 'invalid-function (list tmp-ih)))
|
|
(when (and (> (length menu-cond-elt) 4)
|
|
tmp-s
|
|
(not (fboundp tmp-s))
|
|
(not (eq tmp-s t)))
|
|
(signal 'invalid-function (list tmp-s)))
|
|
(set list-symbol ())
|
|
(vector list-symbol ;BUFFER-LIST-VARIABLE
|
|
(nth 0 menu-cond-elt) ;CONDITION
|
|
(nth 1 menu-cond-elt) ;SORT-KEY
|
|
(nth 2 menu-cond-elt) ;MENU-TITLE
|
|
item-handler ;ITEM-HANDLER
|
|
sorter) ;SORTER
|
|
))
|
|
|
|
;; This defsubst is only used in `msb--choose-menu' below. It was
|
|
;; pulled out merely to make the code somewhat clearer. The indentation
|
|
;; level was too big.
|
|
(defsubst msb--collect (function-info-vector)
|
|
(let ((result nil)
|
|
(multi-flag nil)
|
|
function-info-list)
|
|
(setq function-info-list
|
|
(cl-loop for fi
|
|
across function-info-vector
|
|
if (and (setq result
|
|
(eval (aref fi 1) t)) ;Test CONDITION
|
|
(not (and (eq result 'no-multi)
|
|
multi-flag))
|
|
(progn (when (eq result 'multi)
|
|
(setq multi-flag t))
|
|
t))
|
|
collect fi
|
|
until (and result
|
|
(not (eq result 'multi)))))
|
|
(when (and (not function-info-list)
|
|
(not result))
|
|
(error "No catch-all in msb-menu-cond!"))
|
|
function-info-list))
|
|
|
|
(defun msb--add-to-menu (buffer function-info max-buffer-name-length)
|
|
"Add BUFFER to the menu depicted by FUNCTION-INFO.
|
|
All side-effects. Adds an element of form (BUFFER-TITLE . BUFFER)
|
|
to the buffer-list variable in FUNCTION-INFO."
|
|
(let ((list-symbol (aref function-info 0))) ;BUFFER-LIST-VARIABLE
|
|
;; Here comes the hairy side-effect!
|
|
(push (cons (funcall (aref function-info 4) ;ITEM-HANDLER
|
|
buffer
|
|
max-buffer-name-length)
|
|
buffer)
|
|
(symbol-value list-symbol))))
|
|
|
|
(defsubst msb--choose-menu (buffer function-info-vector max-buffer-name-length)
|
|
"Select the appropriate menu for BUFFER."
|
|
;; This is all side-effects, folks!
|
|
;; This should be optimized.
|
|
(unless (and (not msb-display-invisible-buffers-p)
|
|
(msb-invisible-buffer-p buffer))
|
|
(condition-case nil
|
|
(with-current-buffer buffer
|
|
;; Menu found. Add to this menu
|
|
(dolist (info (msb--collect function-info-vector))
|
|
(msb--add-to-menu buffer info max-buffer-name-length)))
|
|
(error (unless msb--error
|
|
(setq msb--error
|
|
(format-message
|
|
"In msb-menu-cond, error for buffer `%s'."
|
|
(buffer-name buffer)))
|
|
(error "%s" msb--error))))))
|
|
|
|
(defun msb--create-sort-item (function-info)
|
|
"Return (SORT-KEY TITLE . BUFFER-LIST) or nil if the buffer-list is empty."
|
|
(let ((buffer-list (symbol-value (aref function-info 0))))
|
|
(when buffer-list
|
|
(let ((sorter (aref function-info 5)) ;SORTER
|
|
(sort-key (aref function-info 2))) ;MENU-SORT-KEY
|
|
(when sort-key
|
|
(cons sort-key
|
|
(cons (format (aref function-info 3) ;MENU-TITLE
|
|
(length buffer-list))
|
|
(cond
|
|
((null sorter)
|
|
buffer-list)
|
|
((eq sorter t)
|
|
(nreverse buffer-list))
|
|
(t
|
|
(sort buffer-list sorter))))))))))
|
|
|
|
(defun msb--aggregate-alist (alist same-predicate sort-predicate)
|
|
"Return ALIST as a sorted, aggregated alist.
|
|
|
|
In the result all items with the same car element (according to
|
|
SAME-PREDICATE) are aggregated together. The alist is first sorted by
|
|
SORT-PREDICATE.
|
|
|
|
Example:
|
|
\(msb--aggregate-alist
|
|
\\='((a . a1) (a . a2) (b . b1) (c . c3) (a . a4) (a . a3) (b . b3) (b . b2))
|
|
(function string=)
|
|
(lambda (item1 item2)
|
|
(string< (symbol-name item1) (symbol-name item2))))
|
|
results in
|
|
\((a a1 a2 a4 a3) (b b1 b3 b2) (c c3))"
|
|
(when (not (null alist))
|
|
(let (same
|
|
tmp-old-car
|
|
tmp-same
|
|
(first-time-p t)
|
|
old-car)
|
|
(nconc
|
|
(apply #'nconc
|
|
(mapcar
|
|
(lambda (item)
|
|
(cond
|
|
(first-time-p
|
|
(push (cdr item) same)
|
|
(setq first-time-p nil)
|
|
(setq old-car (car item))
|
|
nil)
|
|
((funcall same-predicate (car item) old-car)
|
|
(push (cdr item) same)
|
|
nil)
|
|
(t
|
|
(setq tmp-same same
|
|
tmp-old-car old-car)
|
|
(setq same (list (cdr item))
|
|
old-car (car item))
|
|
(list (cons tmp-old-car (nreverse tmp-same))))))
|
|
(sort alist (lambda (item1 item2)
|
|
(funcall sort-predicate
|
|
(car item1) (car item2))))))
|
|
(list (cons old-car (nreverse same)))))))
|
|
|
|
|
|
(defun msb--mode-menu-cond ()
|
|
(let ((key msb-modes-key))
|
|
(mapcar (lambda (item)
|
|
(cl-incf key)
|
|
(list `( eq major-mode (quote ,(car item)))
|
|
key
|
|
(concat (cdr item) " (%d)")))
|
|
(sort
|
|
(let ((mode-list nil))
|
|
(dolist (buffer (cdr (buffer-list)))
|
|
(with-current-buffer buffer
|
|
(when (and (not (msb-invisible-buffer-p))
|
|
(not (assq major-mode mode-list)))
|
|
(push (cons major-mode
|
|
(format-mode-line mode-name nil nil buffer))
|
|
mode-list))))
|
|
mode-list)
|
|
(lambda (item1 item2)
|
|
(string< (cdr item1) (cdr item2)))))))
|
|
|
|
(defun msb--most-recently-used-menu (max-buffer-name-length)
|
|
"Return a list for the most recently used buffers.
|
|
It takes the form ((TITLE . BUFFER-LIST)...)."
|
|
(when (and (numberp msb-display-most-recently-used)
|
|
(> msb-display-most-recently-used 0))
|
|
(let* ((buffers (cdr (buffer-list)))
|
|
(most-recently-used
|
|
(cl-loop with n = 0
|
|
for buffer in buffers
|
|
if (with-current-buffer buffer
|
|
(and (not (msb-invisible-buffer-p))
|
|
(not (eq major-mode 'dired-mode))))
|
|
collect (with-current-buffer buffer
|
|
(cons (funcall msb-item-handling-function
|
|
buffer
|
|
max-buffer-name-length)
|
|
buffer))
|
|
and do (cl-incf n)
|
|
until (>= n msb-display-most-recently-used))))
|
|
(cons (if (stringp msb-most-recently-used-title)
|
|
(format msb-most-recently-used-title
|
|
(length most-recently-used))
|
|
(signal 'wrong-type-argument (list msb-most-recently-used-title)))
|
|
most-recently-used))))
|
|
|
|
(defun msb--create-buffer-menu-2 ()
|
|
(let ((max-buffer-name-length 0)
|
|
file-buffers
|
|
function-info-vector)
|
|
;; Calculate the longest buffer name.
|
|
(dolist (buffer (buffer-list))
|
|
(when (or msb-display-invisible-buffers-p
|
|
(not (msb-invisible-buffer-p)))
|
|
(setq max-buffer-name-length
|
|
(max max-buffer-name-length (length (buffer-name buffer))))))
|
|
;; Make a list with elements of type
|
|
;; (BUFFER-LIST-VARIABLE
|
|
;; CONDITION
|
|
;; MENU-SORT-KEY
|
|
;; MENU-TITLE
|
|
;; ITEM-HANDLER
|
|
;; SORTER)
|
|
;; Uses "function-global" variables:
|
|
;; function-info-vector
|
|
(setq function-info-vector
|
|
(apply (function vector)
|
|
(mapcar (function msb--create-function-info)
|
|
(append msb-menu-cond (msb--mode-menu-cond)))))
|
|
;; Split the buffer-list into several lists; one list for each
|
|
;; criteria. This is the most critical part with respect to time.
|
|
(dolist (buffer (buffer-list))
|
|
(cond ((and msb-files-by-directory
|
|
(buffer-file-name buffer)
|
|
;; exclude ange-ftp buffers
|
|
;;(not (string-match "\\/[^/:]+:"
|
|
;; (buffer-file-name buffer)))
|
|
)
|
|
(push buffer file-buffers))
|
|
(t
|
|
(msb--choose-menu buffer
|
|
function-info-vector
|
|
max-buffer-name-length))))
|
|
(when file-buffers
|
|
(setq file-buffers
|
|
(mapcar (lambda (buffer-list)
|
|
`(,msb-files-by-directory-sort-key
|
|
,(car buffer-list)
|
|
,@(sort
|
|
(mapcar (lambda (buffer)
|
|
(cons (with-current-buffer buffer
|
|
(funcall
|
|
msb-item-handling-function
|
|
buffer
|
|
max-buffer-name-length))
|
|
buffer))
|
|
(cdr buffer-list))
|
|
(lambda (item1 item2)
|
|
(string< (car item1) (car item2))))))
|
|
(msb--choose-file-menu file-buffers))))
|
|
;; Now make the menu - a list of (TITLE . BUFFER-LIST)
|
|
(let* (menu
|
|
(most-recently-used
|
|
(msb--most-recently-used-menu max-buffer-name-length))
|
|
(others (nconc file-buffers
|
|
(cl-loop for elt
|
|
across function-info-vector
|
|
for value = (msb--create-sort-item elt)
|
|
if value collect value))))
|
|
(setq menu
|
|
(mapcar #'cdr ;Remove the SORT-KEY
|
|
;; Sort the menus - not the items.
|
|
(msb--add-separators
|
|
(sort
|
|
;; Get a list of (SORT-KEY TITLE . BUFFER-LIST)
|
|
;; Also sorts the items within the menus.
|
|
(if (cdr most-recently-used)
|
|
(cons
|
|
;; Add most recent used buffers
|
|
(cons msb-most-recently-used-sort-key
|
|
most-recently-used)
|
|
others)
|
|
others)
|
|
(lambda (elt1 elt2)
|
|
(< (car elt1) (car elt2)))))))
|
|
;; Now make it a keymap menu
|
|
(append
|
|
'(keymap "Select Buffer")
|
|
(msb--make-keymap-menu menu)
|
|
(when msb-separator-diff
|
|
(list (list 'separator "--")))
|
|
(list (cons 'toggle
|
|
(cons
|
|
(if msb-files-by-directory
|
|
"*Files by type*"
|
|
"*Files by directory*")
|
|
'msb--toggle-menu-type)))))))
|
|
|
|
(defun msb--create-buffer-menu ()
|
|
(save-match-data
|
|
(save-excursion
|
|
(msb--create-buffer-menu-2))))
|
|
|
|
(defun msb--toggle-menu-type ()
|
|
"Multi-purpose function for selecting a buffer with the mouse."
|
|
(interactive)
|
|
(setq msb-files-by-directory (not msb-files-by-directory))
|
|
;; This gets a warning, but it is correct,
|
|
;; because this file redefines menu-bar-update-buffers.
|
|
(msb-menu-bar-update-buffers t))
|
|
|
|
(defun mouse-select-buffer (event)
|
|
"Pop up several menus of buffers, for selection with the mouse.
|
|
Returns the selected buffer or nil if no buffer is selected.
|
|
|
|
The way the buffers are split is conveniently handled with the
|
|
variable `msb-menu-cond'."
|
|
;; Popup the menu and return the selected buffer.
|
|
(when (or msb--error
|
|
(not msb--last-buffer-menu)
|
|
(not (fboundp 'frame-or-buffer-changed-p))
|
|
(frame-or-buffer-changed-p))
|
|
(setq msb--error nil)
|
|
(setq msb--last-buffer-menu (msb--create-buffer-menu)))
|
|
(let ((position event)
|
|
choice)
|
|
(when (and (fboundp 'posn-x-y)
|
|
(fboundp 'posn-window))
|
|
(let ((posX (car (posn-x-y (event-start event))))
|
|
(posY (cdr (posn-x-y (event-start event))))
|
|
(posWind (posn-window (event-start event))))
|
|
;; adjust position
|
|
(setq posX (- posX (funcall msb-horizontal-shift-function))
|
|
position (list (list posX posY) posWind))))
|
|
;; Popup the menu
|
|
(setq choice (x-popup-menu position msb--last-buffer-menu))
|
|
(cond
|
|
((eq (car choice) 'toggle)
|
|
;; Bring up the menu again with type toggled.
|
|
(msb--toggle-menu-type)
|
|
(mouse-select-buffer event))
|
|
((and (numberp (car choice))
|
|
(null (cdr choice)))
|
|
(let ((msb--last-buffer-menu (nthcdr 2 (assq (car choice)
|
|
msb--last-buffer-menu))))
|
|
(mouse-select-buffer event)))
|
|
((while (numberp (car choice))
|
|
(setq choice (cdr choice))))
|
|
((and (stringp (car choice))
|
|
(null (cdr choice)))
|
|
(car choice))
|
|
((null choice)
|
|
choice)
|
|
(t
|
|
(error "Unknown form for buffer: %s" choice)))))
|
|
|
|
;; Add separators
|
|
(defun msb--add-separators (sorted-list)
|
|
(if (or (not msb-separator-diff)
|
|
(not (numberp msb-separator-diff)))
|
|
sorted-list
|
|
(let ((last-key nil))
|
|
(apply #'nconc
|
|
(mapcar
|
|
(lambda (item)
|
|
(cond
|
|
((and msb-separator-diff
|
|
last-key
|
|
(> (- (car item) last-key)
|
|
msb-separator-diff))
|
|
(setq last-key (car item))
|
|
(list (cons last-key 'separator)
|
|
item))
|
|
(t
|
|
(setq last-key (car item))
|
|
(list item))))
|
|
sorted-list)))))
|
|
|
|
(defun msb--split-menus-2 (list mcount result)
|
|
(cond
|
|
((> (length list) msb-max-menu-items)
|
|
(let ((count 0)
|
|
sub-name
|
|
(tmp-list nil))
|
|
(while (< count msb-max-menu-items)
|
|
(push (pop list) tmp-list)
|
|
(cl-incf count))
|
|
(setq tmp-list (nreverse tmp-list))
|
|
(setq sub-name (concat (car (car tmp-list)) "..."))
|
|
(push (nconc (list mcount sub-name
|
|
'keymap sub-name)
|
|
tmp-list)
|
|
result))
|
|
(msb--split-menus-2 list (1+ mcount) result))
|
|
((null result)
|
|
list)
|
|
(t
|
|
(let (sub-name)
|
|
(setq sub-name (concat (car (car list)) "..."))
|
|
(push (nconc (list mcount sub-name 'keymap sub-name)
|
|
list)
|
|
result))
|
|
(nreverse result))))
|
|
|
|
(defun msb--split-menus (list)
|
|
(if (and (integerp msb-max-menu-items)
|
|
(> msb-max-menu-items 0))
|
|
(msb--split-menus-2 list 0 nil)
|
|
list))
|
|
|
|
(defun msb--select-buffer ()
|
|
(interactive)
|
|
(switch-to-buffer last-command-event))
|
|
|
|
(defun msb--make-keymap-menu (raw-menu)
|
|
(let ((mcount 0))
|
|
(mapcar
|
|
(lambda (sub-menu)
|
|
(cond
|
|
((eq 'separator sub-menu)
|
|
(list 'separator "--"))
|
|
(t
|
|
(let ((buffers (mapcar (lambda (item)
|
|
(cons (buffer-name (cdr item))
|
|
(cons (car item) 'msb--select-buffer)))
|
|
(cdr sub-menu))))
|
|
(nconc (list (cl-incf mcount) (car sub-menu)
|
|
'keymap (car sub-menu))
|
|
(msb--split-menus buffers))))))
|
|
raw-menu)))
|
|
|
|
(defun msb-menu-bar-update-buffers (&optional arg)
|
|
"A re-written version of `menu-bar-update-buffers'."
|
|
;; If user discards the Buffers item, play along.
|
|
(when (and (lookup-key (current-global-map) [menu-bar buffer])
|
|
(or (not (fboundp 'frame-or-buffer-changed-p))
|
|
(frame-or-buffer-changed-p)
|
|
arg))
|
|
(let ((frames (frame-list))
|
|
buffers-menu frames-menu)
|
|
;; Make the menu of buffers proper.
|
|
(setq msb--last-buffer-menu (msb--create-buffer-menu))
|
|
;; Skip the `keymap' symbol.
|
|
(setq buffers-menu (cdr msb--last-buffer-menu))
|
|
;; Make a Frames menu if we have more than one frame.
|
|
(when (cdr frames)
|
|
(let* ((frame-length (length frames))
|
|
(f-title (format "Frames (%d)" frame-length)))
|
|
;; List only the N most recently selected frames
|
|
(when (and (integerp msb-max-menu-items)
|
|
(> msb-max-menu-items 1)
|
|
(> frame-length msb-max-menu-items))
|
|
(setcdr (nthcdr msb-max-menu-items frames) nil))
|
|
(setq frames-menu
|
|
(nconc
|
|
(list 'frame f-title 'keymap f-title)
|
|
(mapcar
|
|
(lambda (frame)
|
|
(nconc
|
|
(list (frame-parameter frame 'name)
|
|
(frame-parameter frame 'name))
|
|
(lambda ()
|
|
(interactive) (menu-bar-select-frame frame))))
|
|
frames)))))
|
|
(setcdr global-buffers-menu-map
|
|
(if (and buffers-menu frames-menu)
|
|
;; Combine Frame and Buffers menus with separator between
|
|
(nconc (list "Buffers and Frames" frames-menu
|
|
(and msb-separator-diff '(separator "--")))
|
|
(cdr buffers-menu))
|
|
buffers-menu)))))
|
|
|
|
;; Snarf current bindings of `mouse-buffer-menu' (normally
|
|
;; C-down-mouse-1).
|
|
(defvar msb-mode-map
|
|
(let ((map (make-sparse-keymap "Msb")))
|
|
(define-key map [remap mouse-buffer-menu] #'msb)
|
|
map))
|
|
|
|
;;;###autoload
|
|
(define-minor-mode msb-mode
|
|
"Toggle Msb mode.
|
|
|
|
This mode overrides the binding(s) of `mouse-buffer-menu' to provide a
|
|
different buffer menu using the function `msb'."
|
|
:global t
|
|
(if msb-mode
|
|
(progn
|
|
(add-hook 'menu-bar-update-hook #'msb-menu-bar-update-buffers)
|
|
(remove-hook 'menu-bar-update-hook #'menu-bar-update-buffers)
|
|
(msb-menu-bar-update-buffers t))
|
|
(remove-hook 'menu-bar-update-hook #'msb-menu-bar-update-buffers)
|
|
(add-hook 'menu-bar-update-hook #'menu-bar-update-buffers)
|
|
(menu-bar-update-buffers t)))
|
|
|
|
(defun msb-unload-function ()
|
|
"Unload the Msb library."
|
|
(msb-mode -1)
|
|
;; continue standard unloading
|
|
nil)
|
|
|
|
(provide 'msb)
|
|
(run-hooks 'msb-after-load-hook)
|
|
|
|
;;; msb.el ends here
|