LCOV - code coverage report
Current view: top level - lisp - uniquify.el (source / functions) Hit Total Coverage
Test: tramp-tests.info Lines: 70 189 37.0 %
Date: 2017-08-27 09:44:50 Functions: 9 17 52.9 %

          Line data    Source code
       1             : ;;; uniquify.el --- unique buffer names dependent on file name -*- lexical-binding: t -*-
       2             : 
       3             : ;; Copyright (C) 1989, 1995-1997, 2001-2017 Free Software Foundation,
       4             : ;; Inc.
       5             : 
       6             : ;; Author: Dick King <king@reasoning.com>
       7             : ;; Maintainer: emacs-devel@gnu.org
       8             : ;; Keywords: files
       9             : ;; Created: 15 May 86
      10             : ;; Package: emacs
      11             : 
      12             : ;; This file is part of GNU Emacs.
      13             : 
      14             : ;; GNU Emacs is free software: you can redistribute it and/or modify
      15             : ;; it under the terms of the GNU General Public License as published by
      16             : ;; the Free Software Foundation, either version 3 of the License, or
      17             : ;; (at your option) any later version.
      18             : 
      19             : ;; GNU Emacs is distributed in the hope that it will be useful,
      20             : ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
      21             : ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      22             : ;; GNU General Public License for more details.
      23             : 
      24             : ;; You should have received a copy of the GNU General Public License
      25             : ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
      26             : 
      27             : ;;; Commentary:
      28             : 
      29             : ;; Emacs's traditional method for making buffer names unique adds <2>, <3>,
      30             : ;; etc. to the end of (all but one of) the buffers.  This file replaces
      31             : ;; that behavior, for buffers visiting files and dired buffers, with a
      32             : ;; uniquification that adds parts of the file name until the buffer names
      33             : ;; are unique.  For instance, buffers visiting /u/mernst/tmp/Makefile and
      34             : ;; /usr/projects/zaphod/Makefile would be named Makefile|tmp and
      35             : ;; Makefile|zaphod, respectively (instead of Makefile and Makefile<2>).
      36             : ;; Other buffer name styles are also available.
      37             : 
      38             : ;; To use this file, do (require 'uniquify)
      39             : ;; and set uniquify-buffer-name-style to one of its non-nil alternative values.
      40             : 
      41             : ;; For other options, see "User-visible variables", below.
      42             : 
      43             : ;; A version of uniquify.el that works under Emacs 18, Emacs 19, XEmacs,
      44             : ;; and InfoDock is available from the maintainer.
      45             : 
      46             : ;;; Change Log:
      47             : 
      48             : ;; Originally by Dick King <king@reasoning.com> 15 May 86
      49             : ;; Converted for Emacs 18 by Stephen Gildea <gildea@stop.mail-abuse.org>
      50             : ;; Make uniquify-min-dir-content 0 truly non-invasive.  gildea 23 May 89
      51             : ;; Some cleanup.  uniquify-min-dir-content default 0.  gildea 01 Jun 89
      52             : ;; Don't rename to "".  Michael Ernst <mernst@theory.lcs.mit.edu> 15 Jun 94
      53             : ;; Add kill-buffer-hook.  Kenneth Manheimer <ken.manheimer@nist.gov> 09 May 95
      54             : ;; Add advice for rename-buffer and create-file-buffer, handle dired buffers,
      55             : ;;  kill-buffer-rationalize-buffer-names-p, documentation.  mernst 24 May 95
      56             : ;; Remove free variables, fix typos.  mernst 5 Jun 95
      57             : ;; Efficiently support Emacs 19.27 & earlier.  ken.manheimer, mernst 10 Jun 95
      58             : ;; Rename user options to "uniquify-...", add uniquify-reverse-dir-content-p,
      59             : ;;  add uniquify-ask-about-buffer-names-p.  king, mernst 13 Jun 95
      60             : ;; Prefix functions by "uniquify-..."; rename mnemonic-buffer-names to
      61             : ;;  uniquify-buffer-name-style; add 'forward and 'post-forward-angle-brackets
      62             : ;;  styles; remove uniquify-reverse-dir-content-p; add
      63             : ;;  uniquify-trailing-separator-p.  mernst 4 Aug 95
      64             : ;; Don't call expand-file-name on nil.  mernst 7 Jan 96
      65             : ;; Check whether list-buffers-directory is bound.  mernst 11 Oct 96
      66             : ;; Ignore non-file non-dired buffers. Colin Rafferty <craffert@ml.com> 3 Mar 97
      67             : ;; Use last component, not "", for file name of directories.  mernst 27 Jun 97
      68             : ;; Use directory-file-name; code cleanup.  mernst 6 Sep 97
      69             : ;; Add uniquify-ignore-buffers-re.
      70             : ;;  Andre Srinivasan <andre@visigenic.com> 9 Sep 97
      71             : ;; Add uniquify-list-buffers-directory-modes
      72             : ;;   Stefan Monnier <monnier@cs.yale.edu> 17 Nov 2000
      73             : ;; Algorithm and data structure changed to reduce consing with lots of buffers
      74             : ;;   Francesco Potortì <pot@gnu.org> (ideas by rms and monnier) 2001-07-18
      75             : 
      76             : ;; Valuable feedback was provided by
      77             : ;; Paul Smith <psmith@baynetworks.com>,
      78             : ;; Alastair Burt <burt@dfki.uni-kl.de>,
      79             : ;; Bob Weiner <weiner@footloose.sps.mot.com>,
      80             : ;; Albert L. Ting <alt@vlibs.com>,
      81             : ;; gyro@reasoning.com,
      82             : ;; Bryan O'Sullivan <bos@eng.sun.com>.
      83             : 
      84             : 
      85             : ;;; Code:
      86             : 
      87             : (eval-when-compile (require 'cl-lib))
      88             : 
      89             : ;;; User-visible variables
      90             : 
      91             : (defgroup uniquify nil
      92             :   "Unique buffer names dependent on file name."
      93             :   :group 'files)
      94             : 
      95             : 
      96             : (defcustom uniquify-buffer-name-style 'post-forward-angle-brackets
      97             :   "How to construct unique buffer names for files with the same base name.
      98             : The value can be one of: `forward', `reverse', `post-forward',
      99             : `post-forward-angle-brackets', or nil.
     100             : 
     101             : For example, the files `/foo/bar/mumble/name' and `/baz/quux/mumble/name'
     102             : would have the following buffer names in the various styles:
     103             : 
     104             :   forward                       bar/mumble/name    quux/mumble/name
     105             :   reverse                       name\\mumble\\bar    name\\mumble\\quux
     106             :   post-forward                  name|bar/mumble    name|quux/mumble
     107             :   post-forward-angle-brackets   name<bar/mumble>   name<quux/mumble>
     108             :   nil                           name               name<2>
     109             : 
     110             : The \"mumble\" part may be stripped as well, depending on the
     111             : setting of `uniquify-strip-common-suffix'.  For more options that
     112             : you can set, browse the `uniquify' custom group."
     113             :   :type '(radio (const forward)
     114             :                 (const reverse)
     115             :                 (const post-forward)
     116             :                 (const post-forward-angle-brackets)
     117             :                 (const :tag "numeric suffixes" nil))
     118             :   :version "24.4"
     119             :   :require 'uniquify)
     120             : 
     121             : (defcustom uniquify-after-kill-buffer-p t
     122             :   "If non-nil, rerationalize buffer names after a buffer has been killed."
     123             :   :type 'boolean)
     124             : 
     125             : ;; The default value matches certain Gnus buffers.
     126             : (defcustom uniquify-ignore-buffers-re nil
     127             :   "Regular expression matching buffer names that should not be uniquified.
     128             : For instance, set this to \"^draft-[0-9]+$\" to avoid having uniquify rename
     129             : draft buffers even if `uniquify-after-kill-buffer-p' is non-nil and the
     130             : visited file name isn't the same as that of the buffer."
     131             :   :type '(choice (const :tag "Uniquify all buffers" nil) regexp))
     132             : 
     133             : (defcustom uniquify-min-dir-content 0
     134             :   "Minimum number of directory name components included in buffer name."
     135             :   :type 'integer)
     136             : 
     137             : (defcustom uniquify-separator nil
     138             :   "String separator for buffer name components.
     139             : When `uniquify-buffer-name-style' is `post-forward', separates
     140             : base file name from directory part in buffer names (default \"|\").
     141             : When `uniquify-buffer-name-style' is `reverse', separates all
     142             : file name components (default \"\\\")."
     143             :   :type '(choice (const nil) string))
     144             : 
     145             : (defcustom uniquify-trailing-separator-p nil
     146             :   "If non-nil, add a file name separator to dired buffer names.
     147             : If `uniquify-buffer-name-style' is `forward', add the separator at the end;
     148             : if it is `reverse', add the separator at the beginning; otherwise, this
     149             : variable is ignored."
     150             :   :type 'boolean)
     151             : 
     152             : (defcustom uniquify-strip-common-suffix
     153             :   ;; Using it when uniquify-min-dir-content>0 doesn't make much sense.
     154             :   (eq 0 uniquify-min-dir-content)
     155             :   "If non-nil, strip common directory suffixes of conflicting files.
     156             : E.g. if you open /a1/b/c/d and /a2/b/c/d, the buffer names will say
     157             : \"d|a1\" and \"d|a2\" instead of \"d|a1/b/c\" and \"d|a2/b/c\".
     158             : This can be handy when you have deep parallel hierarchies."
     159             :   :type 'boolean)
     160             : 
     161             : (defvar uniquify-list-buffers-directory-modes '(dired-mode cvs-mode vc-dir-mode)
     162             :   "List of modes for which uniquify should obey `list-buffers-directory'.
     163             : That means that when `buffer-file-name' is set to nil, `list-buffers-directory'
     164             : contains the name of the directory which the buffer is visiting.")
     165             : 
     166             : ;;; Utilities
     167             : 
     168             : ;; uniquify-fix-list data structure
     169             : (cl-defstruct (uniquify-item
     170             :             (:constructor nil) (:copier nil)
     171             :             (:constructor uniquify-make-item
     172             :              (base dirname buffer &optional proposed)))
     173             :   base dirname buffer proposed)
     174             : 
     175             : ;; Internal variables used free
     176             : (defvar uniquify-possibly-resolvable nil)
     177             : 
     178             : (defvar-local uniquify-managed nil
     179             :   "Non-nil if the name of this buffer is managed by uniquify.
     180             : It actually holds the list of `uniquify-item's corresponding to the conflict.")
     181             : (put 'uniquify-managed 'permanent-local t)
     182             : 
     183             : ;; Used in desktop.el to save the non-uniquified buffer name
     184             : (defun uniquify-buffer-base-name ()
     185             :   "Return the base name of the current buffer.
     186             : Return nil if the buffer is not managed by uniquify."
     187           0 :   (and uniquify-managed
     188           0 :        (uniquify-item-base (car uniquify-managed))))
     189             : 
     190             : ;;; Main entry point.
     191             : 
     192             : (defun uniquify-rationalize-file-buffer-names (base dirname newbuf)
     193             :   "Make file buffer names unique by adding segments from file name.
     194             : If `uniquify-min-dir-content' > 0, always pulls that many
     195             : file name elements.
     196             : Arguments BASE, DIRNAME, and NEWBUF specify the new buffer that causes
     197             : this rationalization."
     198             :   (interactive
     199           0 :    (list (if uniquify-managed
     200           0 :              (uniquify-item-base (car uniquify-managed)) (buffer-name))
     201           0 :          (uniquify-buffer-file-name (current-buffer))
     202           0 :          (current-buffer)))
     203             :   ;; Make sure we don't get confused by outdated uniquify-managed info in
     204             :   ;; this buffer.
     205          55 :   (with-current-buffer newbuf (setq uniquify-managed nil))
     206          55 :   (when dirname
     207          55 :     (setq dirname (expand-file-name (directory-file-name dirname)))
     208          55 :     (let ((fix-list (list (uniquify-make-item base dirname newbuf)))
     209             :           items)
     210          55 :       (dolist (buffer (buffer-list))
     211        9436 :         (when (and (not (and uniquify-ignore-buffers-re
     212           0 :                              (string-match uniquify-ignore-buffers-re
     213        9436 :                                            (buffer-name buffer))))
     214             :                    ;; Only try to rename buffers we actually manage.
     215        9436 :                    (setq items (buffer-local-value 'uniquify-managed buffer))
     216        9048 :                    (equal base (uniquify-item-base (car items)))
     217             :                    ;; Don't re-add stuff we already have.  Actually this
     218             :                    ;; whole `and' test should only match at most once.
     219        9436 :                    (not (memq (car items) fix-list)))
     220           0 :           (unless (cdr items)
     221             :             ;; If there was no conflict, the buffer-name is equal to the
     222             :             ;; base-name and we may have missed a rename-buffer because
     223             :             ;; of code like in set-visited-file-name:
     224             :             ;; (or (string= new-name (buffer-name)) (rename-buffer new-name t))
     225             :             ;; So we need to refresh the dirname of the uniquify-item.
     226           0 :             (setf (uniquify-item-dirname (car items))
     227           0 :                   (uniquify-buffer-file-name
     228           0 :                    (uniquify-item-buffer (car items))))
     229             :             ;; This shouldn't happen, but maybe there's no dirname any more.
     230           0 :             (unless (uniquify-item-dirname (car items))
     231           0 :               (with-current-buffer (uniquify-item-buffer (car items))
     232           0 :                 (setq uniquify-managed nil))
     233           0 :               (setq items nil)))
     234             :           ;; In case we missed some calls to kill-buffer, there may be dead
     235             :           ;; buffers in uniquify-managed, so filter them out.
     236           0 :           (setq items
     237           0 :                 (delq nil (mapcar
     238             :                            (lambda (item)
     239           0 :                              (if (buffer-live-p (uniquify-item-buffer item))
     240           0 :                                  item))
     241           0 :                            items)))
     242        9436 :           (setq fix-list (append fix-list items))))
     243             :       ;; selects buffers whose names may need changing, and others that
     244             :       ;; may conflict, then bring conflicting names together
     245          55 :       (uniquify-rationalize fix-list))))
     246             : 
     247             : ;; uniquify's version of buffer-file-name; result never contains trailing slash
     248             : (defun uniquify-buffer-file-name (buffer)
     249             :   "Return name of directory, file BUFFER is visiting, or nil if none.
     250             : Works on ordinary file-visiting buffers and buffers whose mode is mentioned
     251             : in `uniquify-list-buffers-directory-modes', otherwise returns nil."
     252           0 :   (with-current-buffer buffer
     253           0 :     (let ((filename
     254           0 :            (or buffer-file-name
     255           0 :                (if (memq major-mode uniquify-list-buffers-directory-modes)
     256           0 :                    list-buffers-directory))))
     257           0 :       (when filename
     258           0 :         (directory-file-name
     259           0 :          (file-name-directory
     260           0 :           (expand-file-name
     261           0 :            (directory-file-name filename))))))))
     262             : 
     263             : (defun uniquify-rerationalize-w/o-cb (fix-list)
     264             :   "Re-rationalize the buffers in FIX-LIST, but ignoring `current-buffer'."
     265           0 :   (let ((new-fix-list nil))
     266           0 :     (dolist (item fix-list)
     267           0 :       (let ((buf (uniquify-item-buffer item)))
     268           0 :         (unless (or (eq buf (current-buffer)) (not (buffer-live-p buf)))
     269           0 :           (push item new-fix-list))))
     270           0 :     (when new-fix-list
     271           0 :       (uniquify-rationalize new-fix-list))))
     272             : 
     273             : (defun uniquify-rationalize (fix-list)
     274             :   ;; Set up uniquify to re-rationalize after killing/renaming
     275             :   ;; if there is a conflict.
     276          55 :   (dolist (item fix-list)
     277          55 :     (with-current-buffer (uniquify-item-buffer item)
     278             :       ;; Refresh the dirnames and proposed names.
     279          55 :       (setf (uniquify-item-proposed item)
     280          55 :             (uniquify-get-proposed-name (uniquify-item-base item)
     281          55 :                                         (uniquify-item-dirname item)))
     282          55 :       (setq uniquify-managed fix-list)))
     283             :   ;; Strip any shared last directory names of the dirname.
     284          55 :   (when (and (cdr fix-list) uniquify-strip-common-suffix)
     285           0 :     (let ((strip t))
     286           0 :       (while (let* ((base (file-name-nondirectory
     287           0 :                            (uniquify-item-dirname (car fix-list))))
     288           0 :                     (items fix-list))
     289           0 :                (when (> (length base) 0)
     290           0 :                  (while (and strip items)
     291           0 :                    (unless (equal base (file-name-nondirectory
     292           0 :                                         (uniquify-item-dirname (pop items))))
     293           0 :                      (setq strip nil)))
     294           0 :                  strip))
     295             :         ;; It's all the same => strip.
     296           0 :         (dolist (item (prog1 fix-list (setq fix-list nil)))
     297             :           ;; Create new items because the old ones are kept (with the true
     298             :           ;; `dirname') for later rerationalizing.
     299           0 :           (push (uniquify-make-item (uniquify-item-base item)
     300           0 :                                     (let ((f (file-name-directory
     301           0 :                                               (uniquify-item-dirname item))))
     302           0 :                                       (and f (directory-file-name f)))
     303           0 :                                     (uniquify-item-buffer item)
     304           0 :                                     (uniquify-item-proposed item))
     305          55 :                 fix-list)))))
     306             :   ;; If uniquify-min-dir-content is 0, this will end up just
     307             :   ;; passing fix-list to uniquify-rationalize-conflicting-sublist.
     308          55 :   (uniquify-rationalize-a-list fix-list))
     309             : 
     310             : (defun uniquify-item-greaterp (item1 item2)
     311           0 :   (string-lessp (uniquify-item-proposed item2)
     312           0 :                 (uniquify-item-proposed item1)))
     313             : 
     314             : (defun uniquify-rationalize-a-list (fix-list &optional depth)
     315          55 :   (unless depth (setq depth uniquify-min-dir-content))
     316          55 :   (let (conflicting-sublist     ; all elements have the same proposed name
     317             :         (old-proposed "")
     318             :         proposed)
     319             :     ;; Divide fix-list into items with same proposed names and pass them
     320             :     ;; to uniquify-rationalize-conflicting-sublist.
     321          55 :     (dolist (item (sort (copy-sequence fix-list) 'uniquify-item-greaterp))
     322          55 :       (setq proposed (uniquify-item-proposed item))
     323          55 :       (unless (equal proposed old-proposed)
     324          55 :         (uniquify-rationalize-conflicting-sublist conflicting-sublist
     325          55 :                                                   old-proposed depth)
     326          55 :         (setq conflicting-sublist nil))
     327         110 :       (push item conflicting-sublist)
     328          55 :       (setq old-proposed proposed))
     329          55 :     (uniquify-rationalize-conflicting-sublist conflicting-sublist
     330          55 :                                               old-proposed depth)))
     331             : 
     332             : (defun uniquify-get-proposed-name (base dirname &optional depth)
     333          55 :   (unless depth (setq depth uniquify-min-dir-content))
     334          55 :   (cl-assert (equal (directory-file-name dirname) dirname)) ;No trailing slash.
     335             : 
     336             :   ;; Distinguish directories by adding extra separator.
     337          55 :   (if (and uniquify-trailing-separator-p
     338           0 :            (file-directory-p (expand-file-name base dirname))
     339          55 :            (not (string-equal base "")))
     340           0 :       (cond ((eq uniquify-buffer-name-style 'forward)
     341           0 :              (setq base (file-name-as-directory base)))
     342             :             ;; (setq base (concat base "/")))
     343           0 :             ((eq uniquify-buffer-name-style 'reverse)
     344          55 :              (setq base (concat (or uniquify-separator "\\") base)))))
     345             : 
     346          55 :   (let ((extra-string nil)
     347          55 :         (n depth))
     348          55 :     (while (and (> n 0) dirname)
     349           0 :       (let ((file (file-name-nondirectory dirname)))
     350           0 :         (when (setq dirname (file-name-directory dirname))
     351           0 :           (setq dirname (directory-file-name dirname)))
     352           0 :         (setq n (1- n))
     353           0 :         (push (if (zerop (length file)) ;nil or "".
     354           0 :                   (prog1 (or (file-remote-p dirname) "")
     355           0 :                     (setq dirname nil)) ;Could be `dirname' iso "".
     356           0 :                 file)
     357          55 :               extra-string)))
     358          55 :     (when (zerop n)
     359          55 :       (if (and dirname extra-string
     360          55 :                (equal dirname (file-name-directory dirname)))
     361             :           ;; We're just before the root.  Let's add the leading / already.
     362             :           ;; With "/a/b"+"/c/d/b" this leads to "/a/b" and "d/b" but with
     363             :           ;; "/a/b"+"/c/a/b" this leads to "/a/b" and "a/b".
     364          55 :           (push "" extra-string))
     365          55 :       (setq uniquify-possibly-resolvable t))
     366             : 
     367          55 :     (cond
     368          55 :      ((null extra-string) base)
     369           0 :      ((string-equal base "") ;Happens for dired buffers on the root directory.
     370           0 :       (mapconcat 'identity extra-string "/"))
     371           0 :      ((eq uniquify-buffer-name-style 'reverse)
     372           0 :       (mapconcat 'identity
     373           0 :                  (cons base (nreverse extra-string))
     374           0 :                  (or uniquify-separator "\\")))
     375           0 :      ((eq uniquify-buffer-name-style 'forward)
     376           0 :       (mapconcat 'identity (nconc extra-string (list base))
     377           0 :                  "/"))
     378           0 :      ((eq uniquify-buffer-name-style 'post-forward)
     379           0 :       (concat base (or uniquify-separator "|")
     380           0 :               (mapconcat 'identity extra-string "/")))
     381           0 :      ((eq uniquify-buffer-name-style 'post-forward-angle-brackets)
     382           0 :       (concat base "<" (mapconcat 'identity extra-string "/")
     383           0 :               ">"))
     384           0 :      (t (error "Bad value for uniquify-buffer-name-style: %s"
     385          55 :                uniquify-buffer-name-style)))))
     386             : 
     387             : 
     388             : ;; Deal with conflicting-sublist, all of whose elements have identical
     389             : ;; "base" components.
     390             : (defun uniquify-rationalize-conflicting-sublist (conf-list old-name depth)
     391         110 :   (when conf-list
     392          55 :     (if (or (cdr conf-list)
     393             :             ;; Check that the proposed name doesn't conflict with some
     394             :             ;; existing buffer.
     395          55 :             (let ((buf (get-buffer old-name)))
     396          55 :               (and buf (not (eq buf (uniquify-item-buffer (car conf-list)))))))
     397           0 :         (when uniquify-possibly-resolvable
     398           0 :           (setq uniquify-possibly-resolvable nil
     399           0 :                 depth (1+ depth))
     400           0 :           (dolist (item conf-list)
     401           0 :             (setf (uniquify-item-proposed item)
     402           0 :                   (uniquify-get-proposed-name
     403           0 :                    (uniquify-item-base item)
     404           0 :                    (uniquify-item-dirname item)
     405           0 :                    depth)))
     406           0 :           (uniquify-rationalize-a-list conf-list depth))
     407          55 :       (unless (string= old-name "")
     408         110 :         (uniquify-rename-buffer (car conf-list) old-name)))))
     409             : 
     410             : 
     411             : (defun uniquify-rename-buffer (item newname)
     412          55 :   (let ((buffer (uniquify-item-buffer item)))
     413          55 :     (unless (equal newname (buffer-name buffer))
     414           0 :       (with-current-buffer buffer
     415           0 :         (let ((uniquify-buffer-name-style nil)) ;Avoid hooks on rename-buffer.
     416             :           ;; Pass the `unique' arg, so the advice doesn't mark it as unmanaged.
     417          55 :           (rename-buffer newname t))))))
     418             : 
     419             : ;;; Hooks from the rest of Emacs
     420             : 
     421             : (defun uniquify-maybe-rerationalize-w/o-cb ()
     422             :   "Re-rationalize buffer names, ignoring current buffer."
     423        1950 :   (and (cdr uniquify-managed)
     424           0 :        uniquify-buffer-name-style
     425        1950 :        (uniquify-rerationalize-w/o-cb uniquify-managed)))
     426             : 
     427             : ;; Buffer deletion
     428             : ;; Rerationalize after a buffer is killed, to reduce coinciding buffer names.
     429             : ;; This mechanism uses `kill-buffer-hook', which runs *before* deletion, so
     430             : ;; it calls `uniquify-rerationalize-w/o-cb' to rerationalize the buffer list
     431             : ;; ignoring the current buffer (which is going to be deleted anyway).
     432             : (defun uniquify-kill-buffer-function ()
     433             :   "Re-rationalize buffer names, ignoring current buffer.
     434             : For use on `kill-buffer-hook'."
     435        1950 :   (and uniquify-after-kill-buffer-p
     436        1950 :        (uniquify-maybe-rerationalize-w/o-cb)))
     437             : 
     438             : ;; Ideally we'd like to add it buffer-locally, but that doesn't work
     439             : ;; because kill-buffer-hook is not permanent-local :-(
     440             : ;; FIXME kill-buffer-hook _is_ permanent-local in 22+.
     441             : (add-hook 'kill-buffer-hook 'uniquify-kill-buffer-function)
     442             : 
     443             : ;; The logical place to put all this code is in generate-new-buffer-name.
     444             : ;; It's written in C, so we would add a generate-new-buffer-name-function
     445             : ;; which, if non-nil, would be called instead of the C.  One problem with
     446             : ;; that is that generate-new-buffer-name takes a potential buffer name as
     447             : ;; its argument -- not other information, such as what file the buffer will
     448             : ;; visit.
     449             : 
     450             : ;; The below solution works because generate-new-buffer-name is called
     451             : ;; only by rename-buffer (which, as of 19.29, is never called from C) and
     452             : ;; generate-new-buffer, which is called only by Lisp functions
     453             : ;; create-file-buffer and rename-uniquely.  Rename-uniquely generally
     454             : ;; isn't used for buffers visiting files, so it's sufficient to hook
     455             : ;; rename-buffer and create-file-buffer.  (Setting find-file-hook isn't
     456             : ;; sufficient.)
     457             : 
     458             : (advice-add 'rename-buffer :around #'uniquify--rename-buffer-advice)
     459             : (defun uniquify--rename-buffer-advice (rb-fun newname &optional unique &rest args)
     460             :   "Uniquify buffer names with parts of directory name."
     461           0 :   (let ((retval (apply rb-fun newname unique args)))
     462           0 :   (uniquify-maybe-rerationalize-w/o-cb)
     463           0 :     (if (null unique)
     464             :       ;; Mark this buffer so it won't be renamed by uniquify.
     465           0 :       (setq uniquify-managed nil)
     466           0 :     (when uniquify-buffer-name-style
     467             :       ;; Rerationalize w.r.t the new name.
     468           0 :       (uniquify-rationalize-file-buffer-names
     469           0 :          newname
     470           0 :        (uniquify-buffer-file-name (current-buffer))
     471           0 :        (current-buffer))
     472           0 :         (setq retval (buffer-name (current-buffer)))))
     473           0 :     retval))
     474             : 
     475             : 
     476             : (advice-add 'create-file-buffer :around #'uniquify--create-file-buffer-advice)
     477             : (defun uniquify--create-file-buffer-advice (cfb-fun filename &rest args)
     478             :   "Uniquify buffer names with parts of directory name."
     479          55 :   (let ((retval (apply cfb-fun filename args)))
     480          55 :   (if uniquify-buffer-name-style
     481          55 :         (let ((filename (expand-file-name (directory-file-name filename))))
     482          55 :         (uniquify-rationalize-file-buffer-names
     483          55 :          (file-name-nondirectory filename)
     484          55 :            (file-name-directory filename) retval)))
     485          55 :     retval))
     486             : 
     487             : ;;; The End
     488             : 
     489             : (defun uniquify-unload-function ()
     490             :   "Unload the uniquify library."
     491           0 :   (save-current-buffer
     492           0 :     (let ((buffers nil))
     493           0 :       (dolist (buf (buffer-list))
     494           0 :         (set-buffer buf)
     495           0 :         (when uniquify-managed
     496           0 :           (push (cons buf (uniquify-item-base (car uniquify-managed))) buffers)))
     497           0 :       (advice-remove 'rename-buffer #'uniquify--rename-buffer-advice)
     498           0 :       (advice-remove 'create-file-buffer #'uniquify--create-file-buffer-advice)
     499           0 :       (dolist (buf buffers)
     500           0 :         (set-buffer (car buf))
     501           0 :         (rename-buffer (cdr buf) t))))
     502             :   ;; continue standard unloading
     503             :   nil)
     504             : 
     505             : (provide 'uniquify)
     506             : 
     507             : ;;; uniquify.el ends here

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