-;; Dynamic abbreviation package for GNU Emacs.
-;; Copyright (C) 1985, 1986 Free Software Foundation, Inc.
-
-;; This file is part of GNU Emacs.
-
-;; GNU Emacs is free software; you can redistribute it and/or modify
-;; it under the terms of the GNU General Public License as published by
-;; the Free Software Foundation; either version 1, or (at your option)
-;; any later version.
-
-;; GNU Emacs is distributed in the hope that it will be useful,
-;; but WITHOUT ANY WARRANTY; without even the implied warranty of
-;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-;; GNU General Public License for more details.
-
-;; You should have received a copy of the GNU General Public License
-;; along with GNU Emacs; see the file COPYING. If not, write to
-;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
-
-; DABBREVS - "Dynamic abbreviations" hack, originally written by Don Morrison
-; for Twenex Emacs. Converted to mlisp by Russ Fish. Supports the table
-; feature to avoid hitting the same expansion on re-expand, and the search
-; size limit variable. Bugs fixed from the Twenex version are flagged by
-; comments starting with ;;; .
-;
-; converted to elisp by Spencer Thomas.
-; Thoroughly cleaned up by Richard Stallman.
-;
-; If anyone feels like hacking at it, Bob Keller (Keller@Utah-20) first
-; suggested the beast, and has some good ideas for its improvement, but
-; doesn?tknow TECO (the lucky devil...). One thing that should definitely
-; be done is adding the ability to search some other buffer(s) if you can?t
-; find the expansion you want in the current one.
-
-;; (defun dabbrevs-help ()
-;; "Give help about dabbrevs."
-;; (interactive)
-;; (&info "emacs" "dabbrevs") ; Select the specific info node.
-;; )
-(provide 'dabbrevs)
-
-(defvar dabbrevs-limit nil
- "*Limits region searched by `dabbrevs-expand' to this many chars away.")
-(make-variable-buffer-local 'dabbrevs-limit)
-
-(defvar dabbrevs-backward-only nil
- "*If non-NIL, `dabbrevs-expand' only looks backwards.")
-
-; State vars for dabbrevs-re-expand.
-(defvar last-dabbrevs-table nil
- "Table of expansions seen so far (local)")
-(make-variable-buffer-local 'last-dabbrevs-table)
-
-(defvar last-dabbrevs-abbreviation ""
- "Last string we tried to expand (local).")
-(make-variable-buffer-local 'last-dabbrevs-abbreviation)
-
-(defvar last-dabbrevs-direction 0
- "Direction of last dabbrevs search (local)")
-(make-variable-buffer-local 'last-dabbrevs-direction)
-
-(defvar last-dabbrevs-abbrev-location nil
- "Location last abbreviation began (local).")
-(make-variable-buffer-local 'last-dabbrevs-abbrev-location)
-
-(defvar last-dabbrevs-expansion nil
- "Last expansion of an abbreviation. (local)")
-(make-variable-buffer-local 'last-dabbrevs-expansion)
-
-(defvar last-dabbrevs-expansion-location nil
- "Location the last expansion was found. (local)")
-(make-variable-buffer-local 'last-dabbrevs-expansion-location)
-
-;;;###autoload
-(defun dabbrev-expand (arg)
- "Expand previous word \"dynamically\".
-Expands to the most recent, preceding word for which this is a prefix.
-If no suitable preceding word is found, words following point are considered.
-
-If `case-fold-search' and `case-replace' are non-nil (usually true)
-then the substituted word may be case-adjusted to match the abbreviation
-that you had typed. This takes place if the substituted word, as found,
-is all lower case, or if it is at the beginning of a sentence and only
-its first letter was upper case.
-
-A positive prefix arg N says to take the Nth backward DISTINCT
-possibility. A negative argument says search forward. The variable
-`dabbrev-backward-only' may be used to limit the direction of search to
-backward if set non-nil.
-
-If the cursor has not moved from the end of the previous expansion and
-no argument is given, replace the previously-made expansion
-with the next possible expansion not yet tried."
- (interactive "*P")
- (let (abbrev expansion old which loc n pattern
- (do-case (and case-fold-search case-replace)))
- ;; abbrev -- the abbrev to expand
- ;; expansion -- the expansion found (eventually) or nil until then
- ;; old -- the text currently in the buffer
- ;; (the abbrev, or the previously-made expansion)
- ;; loc -- place where expansion is found
- ;; (to start search there for next expansion if requested later)
- ;; do-case -- non-nil if should transform case when substituting.
- (save-excursion
- (if (and (null arg)
- (eq last-command this-command)
- last-dabbrevs-abbrev-location)
- (progn
- (setq abbrev last-dabbrevs-abbreviation)
- (setq old last-dabbrevs-expansion)
- (setq which last-dabbrevs-direction))
- (setq which (if (null arg)
- (if dabbrevs-backward-only 1 0)
- (prefix-numeric-value arg)))
- (setq loc (point))
- (forward-word -1)
- (setq last-dabbrevs-abbrev-location (point)) ; Original location.
- (setq abbrev (buffer-substring (point) loc))
- (setq old abbrev)
- (setq last-dabbrevs-expansion-location nil)
- (setq last-dabbrev-table nil)) ; Clear table of things seen.
-
- (setq pattern (concat "\\b" (regexp-quote abbrev) "\\(\\sw\\|\\s_\\)+"))
- ;; Try looking backward unless inhibited.
- (if (>= which 0)
- (progn
- (setq n (max 1 which))
- (if last-dabbrevs-expansion-location
- (goto-char last-dabbrevs-expansion-location))
- (while (and (> n 0)
- (setq expansion (dabbrevs-search pattern t do-case)))
- (setq loc (point-marker))
- (setq last-dabbrev-table (cons expansion last-dabbrev-table))
- (setq n (1- n)))
- (or expansion
- (setq last-dabbrevs-expansion-location nil))
- (setq last-dabbrevs-direction (min 1 which))))
-
- (if (and (<= which 0) (not expansion)) ; Then look forward.
- (progn
- (setq n (max 1 (- which)))
- (if last-dabbrevs-expansion-location
- (goto-char last-dabbrevs-expansion-location))
- (while (and (> n 0)
- (setq expansion (dabbrevs-search pattern nil do-case)))
- (setq loc (point-marker))
- (setq last-dabbrev-table (cons expansion last-dabbrev-table))
- (setq n (1- n)))
- (setq last-dabbrevs-direction -1))))
-
- (if (not expansion)
- (let ((first (string= abbrev old)))
- (setq last-dabbrevs-abbrev-location nil)
- (if (not first)
- (progn (undo-boundary)
- (delete-backward-char (length old))
- (insert abbrev)))
- (error (if first
- "No dynamic expansion for \"%s\" found."
- "No further dynamic expansions for \"%s\" found.")
- abbrev))
- ;; Success: stick it in and return.
- (undo-boundary)
- (search-backward old)
- ;; Make case of replacement conform to case of abbreviation
- ;; provided (1) that kind of thing is enabled in this buffer
- ;; and (2) the replacement itself is all lower case.
- ;; First put back the original abbreviation with its original
- ;; case pattern.
- (save-excursion
- (replace-match abbrev t 'literal))
- (search-forward abbrev)
- (let ((do-case (and do-case
- (string= (substring expansion 1)
- (downcase (substring expansion 1))))))
- ;; First put back the original abbreviation with its original
- ;; case pattern.
- (save-excursion
- (replace-match abbrev t 'literal))
- (search-forward abbrev)
- (replace-match (if do-case (downcase expansion) expansion)
- (not do-case)
- 'literal))
- ;; Save state for re-expand.
- (setq last-dabbrevs-abbreviation abbrev)
- (setq last-dabbrevs-expansion expansion)
- (setq last-dabbrevs-expansion-location loc))))
-
-;;;###autoload
-(define-key esc-map "/" 'dabbrev-expand)
-
-
-;; Search function used by dabbrevs library.
-;; First arg is string to find as prefix of word. Second arg is
-;; t for reverse search, nil for forward. Variable dabbrevs-limit
-;; controls the maximum search region size.
-
-;; Table of expansions already seen is examined in buffer last-dabbrev-table,
-;; so that only distinct possibilities are found by dabbrevs-re-expand.
-;; Note that to prevent finding the abbrev itself it must have been
-;; entered in the table.
-
-;; IGNORE-CASE non-nil means treat case as insignificant while
-;; looking for a match and when comparing with previous matches.
-;; Also if that's non-nil and the match is found at the beginning of a sentence
-;; and is in lower case except for the initial
-;; then it is converted to all lower case for return.
-
-;; Value is the expansion, or nil if not found. After a successful
-;; search, point is left right after the expansion found.
-
-(defun dabbrevs-search (pattern reverse ignore-case)
- (let (missing result (case-fold-search ignore-case))
- (save-restriction ; Uses restriction for limited searches.
- (if dabbrevs-limit
- (narrow-to-region last-dabbrevs-abbrev-location
- (+ (point)
- (* dabbrevs-limit (if reverse -1 1)))))
- ;; Keep looking for a distinct expansion.
- (setq result nil)
- (setq missing nil)
- (while (and (not result) (not missing))
- ; Look for it, leave loop if search fails.
- (setq missing
- (not (if reverse
- (re-search-backward pattern nil t)
- (re-search-forward pattern nil t))))
-
- (if (not missing)
- (progn
- (setq result (buffer-substring (match-beginning 0)
- (match-end 0)))
- (let* ((test last-dabbrev-table))
- (while (and test
- (not
- (if ignore-case
- (string= (downcase (car test))
- (downcase result))
- (string= (car test) result))))
- (setq test (cdr test)))
- (if test (setq result nil)))))) ; if already in table, ignore
- (if result
- (save-excursion
- (let ((beg (match-beginning 0)))
- (goto-char beg)
- (and ignore-case
- (string= (substring result 1)
- (downcase (substring result 1)))
- (if (string= paragraph-start
- (concat "^$\\|" page-delimiter))
- (and (re-search-backward sentence-end nil t)
- (= (match-end 0) beg))
- (forward-char 1)
- (backward-sentence)
- (= (point) beg))
- (setq result (downcase result))))))
- result)))
+;;; dabbrev.el --- dynamic abbreviation package
+
+;; Copyright (C) 1985, 1986, 1992, 1994, 1996, 1997, 2000, 2001, 2002,
+;; 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+;; Author: Don Morrison
+;; Maintainer: Lars Lindberg <Lars.Lindberg@sypro.cap.se>
+;; Created: 16 Mars 1992
+;; Lindberg's last update version: 5.7
+;; Keywords: abbrev expand completion convenience
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 2, or (at your option)
+;; any later version.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING. If not, write to the
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; The purpose with this package is to let you write just a few
+;; characters of words you've written earlier to be able to expand
+;; them.
+;;
+;; To expand a word, just put the point right after the word and press
+;; M-/ (dabbrev-expand) or M-C-/ (dabbrev-completion).
+;;
+;; Check out the customizable variables below to learn about all the
+;; features of this package.
+
+;;; Hints and tips for major modes writers:
+
+;; Recommended values C/Lisp etc text
+;; dabbrev-case-fold-search nil t
+;; dabbrev-case-replace nil t
+;;
+;; Set the variables you want special for your mode like this:
+;; (set (make-local-variable 'dabbrev-case-replace) nil)
+;; Then you don't interfere with other modes.
+;;
+;; If your mode handles buffers that refers to other buffers
+;; (i.e. compilation-mode, gud-mode), then try to set
+;; `dabbrev-select-buffers-function' or `dabbrev-friend-buffer-function'
+;; to a function that point out those buffers.
+
+;; Same goes for major-modes that are connected to other modes. There
+;; are for instance a number of mail-modes. One for reading, one for
+;; creating a new mail etc. Maybe those should be connected.
+
+;; Example for GNUS (when we write a reply, we want dabbrev to look in
+;; the article for expansion):
+;; (set (make-local-variable 'dabbrev-friend-buffer-function)
+;; (lambda (buffer)
+;; (save-excursion
+;; (set-buffer buffer)
+;; (memq major-mode '(news-reply-mode gnus-article-mode)))))
+
+
+;; Known bugs and limitations.
+;; - Possible to do several levels of `dabbrev-completion' in the
+;; minibuffer.
+;; - dabbrev-completion doesn't handle resetting the globals variables
+;; right. It resets them after finding the abbrev.
+
+;; Future enhancements
+;; - Check the tags-files? Like tags-complete?
+;; - Add the possibility of searching both forward and backward to
+;; the nearest expansion.
+;; - Check the kill-ring when everything else fails. (Maybe something
+;; for hippie-expand?). [Bng] <boris@cs.rochester.edu>
+
+;;; These people gave suggestions:
+;; [hymie] Hyman Rosen <marks!hymie@jyacc.jyacc.com>
+;; [burgett] Steve Burgett <burgett@bizet.eecs.berkeley.edu>
+;; [jules] Julian Gosnell <jules@x.co.uk>
+;; [kifer] Michael Kifer <kifer@sbcs.sunysb.edu>
+;; [ake] Ake Stenhoff <extaksf@aom.ericsson.se>
+;; [alon] Alon Albert <al%imercury@uunet.uu.net>
+;; [tromey] Tom Tromey <tromey@busco.lanl.gov>
+;; [Rolf] Rolf Schreiber <rolf@mathematik.uni-stuttgart.de>
+;; [Petri] Petri Raitio <per@tekla.fi>
+;; [ejb] Jay Berkenbilt <ejb@ql.org>
+;; [hawley] Bob Hawley <rth1@quartet.mt.att.com>
+;; ... and to all the people who have participated in the beta tests.
+
+;;; Code:
+
+;;----------------------------------------------------------------
+;; Customization variables
+;;----------------------------------------------------------------
+
+(defgroup dabbrev nil
+ "Dynamic Abbreviations."
+ :tag "Dynamic Abbreviations"
+ :group 'abbrev
+ :group 'convenience)
+
+(defcustom dabbrev-backward-only nil
+ "*If non-nil, `dabbrev-expand' only looks backwards."
+ :type 'boolean
+ :group 'dabbrev)
+
+(defcustom dabbrev-limit nil
+ "*Limits region searched by `dabbrev-expand' to this many chars away."
+ :type '(choice (const :tag "off" nil)
+ integer)
+ :group 'dabbrev)
+
+(defcustom dabbrev-abbrev-skip-leading-regexp nil
+ "*Regexp for skipping leading characters of an abbreviation.
+
+Example: Set this to \"\\\\$\" for programming languages
+in which variable names may appear with or without a leading `$'.
+\(For example, in Makefiles.\)
+
+Set this to nil if no characters should be skipped."
+ :type '(choice regexp
+ (const :tag "off" nil))
+ :group 'dabbrev)
+
+(defcustom dabbrev--eliminate-newlines t
+ "*Non-nil means dabbrev should not insert newlines.
+Instead it converts them to spaces."
+ :type 'boolean
+ :group 'dabbrev)
+
+(defcustom dabbrev-case-fold-search 'case-fold-search
+ "*Control whether dabbrev searches should ignore case.
+A value of nil means case is significant.
+A value of `case-fold-search' means case is significant
+ if `case-fold-search' is nil.
+Any other non-nil version means case is not significant."
+ :type '(choice (const :tag "off" nil)
+ (const :tag "like search" case-fold-search)
+ (other :tag "on" t))
+ :group 'dabbrev)
+
+(defcustom dabbrev-upcase-means-case-search nil
+ "*The significance of an uppercase character in an abbreviation.
+nil means case fold search when searching for possible expansions;
+non-nil means case sensitive search.
+
+This variable has an effect only when the value of
+`dabbrev-case-fold-search' says to ignore case."
+ :type 'boolean
+ :group 'dabbrev)
+
+(defcustom dabbrev-case-distinction 'case-replace
+ "*Whether dabbrev treats expansions as the same if they differ in case.
+
+A value of nil means treat them as different.
+A value of `case-replace' means distinguish them if `case-replace' is nil.
+Any other non-nil value means to treat them as the same.
+
+This variable has an effect only when the value of
+`dabbrev-case-fold-search' specifies to ignore case."
+ :type '(choice (const :tag "off" nil)
+ (const :tag "based on `case-replace'" case-replace)
+ (other :tag "on" t))
+ :group 'dabbrev
+ :version "22.1")
+
+(defcustom dabbrev-case-replace 'case-replace
+ "*Whether dabbrev applies the abbreviations's case pattern to the expansion.
+
+A value of nil means preserve the expansion's case pattern.
+A value of `case-replace' means preserve it if `case-replace' is nil.
+Any other non-nil value means modify the expansion
+by applying the abbreviation's case pattern to it.
+
+This variable has an effect only when the value of
+`dabbrev-case-fold-search' specifies to ignore case."
+ :type '(choice (const :tag "off" nil)
+ (const :tag "based on `case-replace'" case-replace)
+ (other :tag "on" t))
+ :group 'dabbrev)
+
+(defcustom dabbrev-abbrev-char-regexp nil
+ "*Regexp to recognize a character in an abbreviation or expansion.
+This regexp will be surrounded with \\\\( ... \\\\) when actually used.
+
+Set this variable to \"\\\\sw\" if you want ordinary words or
+\"\\\\sw\\\\|\\\\s_\" if you want symbols (including characters whose
+syntax is \"symbol\" as well as those whose syntax is \"word\".
+
+The value nil has a special meaning: the abbreviation is from point to
+previous word-start, but the search is for symbols.
+
+For instance, if you are programming in Lisp, `yes-or-no-p' is a symbol,
+while `yes', `or', `no' and `p' are considered words. If this
+variable is nil, then expanding `yes-or-no-' looks for a symbol
+starting with or containing `no-'. If you set this variable to
+\"\\\\sw\\\\|\\\\s_\", that expansion looks for a symbol starting with
+`yes-or-no-'. Finally, if you set this variable to \"\\\\sw\", then
+expanding `yes-or-no-' signals an error because `-' is not part of a word;
+but expanding `yes-or-no' looks for a word starting with `no'.
+
+The recommended value is \"\\\\sw\\\\|\\\\s_\"."
+ :type '(choice (const nil)
+ regexp)
+ :group 'dabbrev)
+
+(defcustom dabbrev-check-all-buffers t
+ "*Non-nil means dabbrev package should search *all* buffers.
+
+Dabbrev always searches the current buffer first. Then, if
+`dabbrev-check-other-buffers' says so, it searches the buffers
+designated by `dabbrev-select-buffers-function'.
+
+Then, if `dabbrev-check-all-buffers' is non-nil, dabbrev searches
+all the other buffers, except those named in `dabbrev-ignored-buffer-names',
+or matched by `dabbrev-ignored-regexps'."
+ :type 'boolean
+ :group 'dabbrev)
+
+(defcustom dabbrev-ignored-buffer-names '("*Messages*" "*Buffer List*")
+ "*List of buffer names that dabbrev should not check.
+See also `dabbrev-ignored-buffer-regexps'."
+ :type '(repeat (string :tag "Buffer name"))
+ :group 'dabbrev
+ :version "20.3")
+
+(defcustom dabbrev-ignored-buffer-regexps nil
+ "*List of regexps matching names of buffers that dabbrev should not check.
+See also `dabbrev-ignored-buffer-names'."
+ :type '(repeat regexp)
+ :group 'dabbrev
+ :version "21.1")
+
+(defcustom dabbrev-check-other-buffers t
+ "*Should \\[dabbrev-expand] look in other buffers?\
+
+nil: Don't look in other buffers.
+t: Also look for expansions in the buffers pointed out by
+ `dabbrev-select-buffers-function'.
+Anything else: When we can't find any more expansions in
+the current buffer, then ask the user whether to look in other
+buffers too.
+
+The default value is t."
+ :type '(choice (const :tag "off" nil)
+ (const :tag "on" t)
+ (other :tag "ask" other))
+ :group 'dabbrev)
+
+;; I guess setting this to a function that selects all C- or C++-
+;; mode buffers would be a good choice for a debugging buffer,
+;; when debugging C- or C++-code.
+(defvar dabbrev-select-buffers-function 'dabbrev--select-buffers
+ "A function that selects buffers that should be searched by dabbrev.
+The function should take no arguments and return a list of buffers to
+search for expansions. See the source of `dabbrev--select-buffers'
+for an example.
+
+A mode setting this variable should make it buffer local.")
+
+(defcustom dabbrev-friend-buffer-function 'dabbrev--same-major-mode-p
+ "*A function to decide whether dabbrev should search OTHER-BUFFER.
+The function should take one argument, OTHER-BUFFER, and return
+non-nil if that buffer should be searched. Have a look at
+`dabbrev--same-major-mode-p' for an example.
+
+The value of `dabbrev-friend-buffer-function' has an effect only if
+the value of `dabbrev-select-buffers-function' uses it. The function
+`dabbrev--select-buffers' is one function you can use here.
+
+A mode setting this variable should make it buffer local."
+ :type 'function
+ :group 'dabbrev)
+
+(defcustom dabbrev-search-these-buffers-only nil
+ "If non-nil, a list of buffers which dabbrev should search.
+If this variable is non-nil, dabbrev will only look in these buffers.
+It will not even look in the current buffer if it is not a member of
+this list."
+ :group 'dabbrev)
+
+;;----------------------------------------------------------------
+;; Internal variables
+;;----------------------------------------------------------------
+
+;; Last obarray of completions in `dabbrev-completion'
+(defvar dabbrev--last-obarray nil)
+
+;; Table of expansions seen so far
+(defvar dabbrev--last-table nil)
+
+;; Last string we tried to expand.
+(defvar dabbrev--last-abbreviation nil)
+
+;; Location last abbreviation began
+(defvar dabbrev--last-abbrev-location nil)
+
+;; Direction of last dabbrevs search
+(defvar dabbrev--last-direction 0)
+
+;; Last expansion of an abbreviation.
+(defvar dabbrev--last-expansion nil)
+
+;; Location the last expansion was found.
+(defvar dabbrev--last-expansion-location nil)
+
+;; The list of remaining buffers with the same mode as current buffer.
+(defvar dabbrev--friend-buffer-list nil)
+
+;; The buffer we looked in last, not counting the current buffer.
+(defvar dabbrev--last-buffer nil)
+
+;; The buffer we found the expansion last time.
+(defvar dabbrev--last-buffer-found nil)
+
+;; The buffer we last did a completion in.
+(defvar dabbrev--last-completion-buffer nil)
+
+;; If non-nil, a function to use when copying successive words.
+;; It should be `upcase' or `downcase'.
+(defvar dabbrev--last-case-pattern nil)
+
+;; Same as dabbrev-check-other-buffers, but is set for every expand.
+(defvar dabbrev--check-other-buffers dabbrev-check-other-buffers)
+
+;; The regexp for recognizing a character in an abbreviation.
+(defvar dabbrev--abbrev-char-regexp nil)
+
+;;----------------------------------------------------------------
+;; Macros
+;;----------------------------------------------------------------
+
+;;; Get the buffer that mini-buffer was activated from
+(defsubst dabbrev--minibuffer-origin ()
+ (car (cdr (buffer-list))))
+
+;; Make a list of some of the elements of LIST.
+;; Check each element of LIST, storing it temporarily in the
+;; variable ELEMENT, and include it in the result
+;; if CONDITION evaluates non-nil.
+(defmacro dabbrev-filter-elements (element list condition)
+ `(let (dabbrev-result dabbrev-tail ,element)
+ (setq dabbrev-tail ,list)
+ (while dabbrev-tail
+ (setq ,element (car dabbrev-tail))
+ (if ,condition
+ (setq dabbrev-result (cons ,element dabbrev-result)))
+ (setq dabbrev-tail (cdr dabbrev-tail)))
+ (nreverse dabbrev-result)))
+
+;;----------------------------------------------------------------
+;; Exported functions
+;;----------------------------------------------------------------
+
+;;;###autoload (define-key esc-map "/" 'dabbrev-expand)
+;;;??? Do we want this?
+;;;###autoload (define-key esc-map [?\C-/] 'dabbrev-completion)
+
+;;;###autoload
+(defun dabbrev-completion (&optional arg)
+ "Completion on current word.
+Like \\[dabbrev-expand] but finds all expansions in the current buffer
+and presents suggestions for completion.
+
+With a prefix argument, it searches all buffers accepted by the
+function pointed out by `dabbrev-friend-buffer-function' to find the
+completions.
+
+If the prefix argument is 16 (which comes from C-u C-u),
+then it searches *all* buffers."
+ (interactive "*P")
+ (dabbrev--reset-global-variables)
+ (let* ((dabbrev-check-other-buffers (and arg t))
+ (dabbrev-check-all-buffers
+ (and arg (= (prefix-numeric-value arg) 16)))
+ (abbrev (dabbrev--abbrev-at-point))
+ (ignore-case-p (and (if (eq dabbrev-case-fold-search 'case-fold-search)
+ case-fold-search
+ dabbrev-case-fold-search)
+ (or (not dabbrev-upcase-means-case-search)
+ (string= abbrev (downcase abbrev)))))
+ (my-obarray dabbrev--last-obarray)
+ init)
+ (save-excursion
+ ;;--------------------------------
+ ;; New abbreviation to expand.
+ ;;--------------------------------
+ (setq dabbrev--last-abbreviation abbrev)
+ ;; Find all expansion
+ (let ((completion-list
+ (dabbrev--find-all-expansions abbrev ignore-case-p))
+ (completion-ignore-case ignore-case-p))
+ ;; Make an obarray with all expansions
+ (setq my-obarray (make-vector (length completion-list) 0))
+ (or (> (length my-obarray) 0)
+ (error "No dynamic expansion for \"%s\" found%s"
+ abbrev
+ (if dabbrev--check-other-buffers "" " in this-buffer")))
+ (cond
+ ((or (not ignore-case-p)
+ (not dabbrev-case-replace))
+ (mapc (function (lambda (string)
+ (intern string my-obarray)))
+ completion-list))
+ ((string= abbrev (upcase abbrev))
+ (mapc (function (lambda (string)
+ (intern (upcase string) my-obarray)))
+ completion-list))
+ ((string= (substring abbrev 0 1)
+ (upcase (substring abbrev 0 1)))
+ (mapc (function (lambda (string)
+ (intern (capitalize string) my-obarray)))
+ completion-list))
+ (t
+ (mapc (function (lambda (string)
+ (intern (downcase string) my-obarray)))
+ completion-list)))
+ (setq dabbrev--last-obarray my-obarray)
+ (setq dabbrev--last-completion-buffer (current-buffer))
+ ;; Find the longest common string.
+ (setq init (try-completion abbrev my-obarray))))
+ ;;--------------------------------
+ ;; Let the user choose between the expansions
+ ;;--------------------------------
+ (or (stringp init)
+ (setq init abbrev))
+ (cond
+ ;; * Replace string fragment with matched common substring completion.
+ ((and (not (string-equal init ""))
+ (not (string-equal (downcase init) (downcase abbrev))))
+ (if (> (length (all-completions init my-obarray)) 1)
+ (message "Repeat `%s' to see all completions"
+ (key-description (this-command-keys)))
+ (message "The only possible completion"))
+ (dabbrev--substitute-expansion nil abbrev init nil))
+ (t
+ ;; * String is a common substring completion already. Make list.
+ (message "Making completion list...")
+ (with-output-to-temp-buffer "*Completions*"
+ (display-completion-list (all-completions init my-obarray)
+ init))
+ (message "Making completion list...done")))
+ (and (window-minibuffer-p (selected-window))
+ (message nil))))
+
+;;;###autoload
+(defun dabbrev-expand (arg)
+ "Expand previous word \"dynamically\".
+
+Expands to the most recent, preceding word for which this is a prefix.
+If no suitable preceding word is found, words following point are
+considered. If still no suitable word is found, then look in the
+buffers accepted by the function pointed out by variable
+`dabbrev-friend-buffer-function'.
+
+A positive prefix argument, N, says to take the Nth backward *distinct*
+possibility. A negative argument says search forward.
+
+If the cursor has not moved from the end of the previous expansion and
+no argument is given, replace the previously-made expansion
+with the next possible expansion not yet tried.
+
+The variable `dabbrev-backward-only' may be used to limit the
+direction of search to backward if set non-nil.
+
+See also `dabbrev-abbrev-char-regexp' and \\[dabbrev-completion]."
+ (interactive "*P")
+ (let (abbrev record-case-pattern
+ expansion old direction (orig-point (point)))
+ ;; abbrev -- the abbrev to expand
+ ;; expansion -- the expansion found (eventually) or nil until then
+ ;; old -- the text currently in the buffer
+ ;; (the abbrev, or the previously-made expansion)
+ (save-excursion
+ (if (and (null arg)
+ (markerp dabbrev--last-abbrev-location)
+ (marker-position dabbrev--last-abbrev-location)
+ (or (eq last-command this-command)
+ (and (window-minibuffer-p (selected-window))
+ (= dabbrev--last-abbrev-location
+ (point)))))
+ ;; Find a different expansion for the same abbrev as last time.
+ (progn
+ (setq abbrev dabbrev--last-abbreviation)
+ (setq old dabbrev--last-expansion)
+ (setq direction dabbrev--last-direction))
+ ;; If the user inserts a space after expanding
+ ;; and then asks to expand again, always fetch the next word.
+ (if (and (eq (preceding-char) ?\s)
+ (markerp dabbrev--last-abbrev-location)
+ (marker-position dabbrev--last-abbrev-location)
+ (= (point) (1+ dabbrev--last-abbrev-location)))
+ (progn
+ ;; The "abbrev" to expand is just the space.
+ (setq abbrev " ")
+ (save-excursion
+ (save-restriction
+ (widen)
+ (if dabbrev--last-buffer
+ (set-buffer dabbrev--last-buffer))
+ ;; Find the end of the last "expansion" word.
+ (if (or (eq dabbrev--last-direction 1)
+ (and (eq dabbrev--last-direction 0)
+ (< dabbrev--last-expansion-location (point))))
+ (setq dabbrev--last-expansion-location
+ (+ dabbrev--last-expansion-location
+ (length dabbrev--last-expansion))))
+ (goto-char dabbrev--last-expansion-location)
+ ;; Take the following word, with intermediate separators,
+ ;; as our expansion this time.
+ (re-search-forward
+ (concat "\\(?:" dabbrev--abbrev-char-regexp "\\)+"))
+ (setq expansion (buffer-substring-no-properties
+ dabbrev--last-expansion-location (point)))
+
+ ;; Record the end of this expansion, in case we repeat this.
+ (setq dabbrev--last-expansion-location (point))))
+ ;; Indicate that dabbrev--last-expansion-location is
+ ;; at the end of the expansion.
+ (setq dabbrev--last-direction -1))
+
+ ;; We have a different abbrev to expand.
+ (dabbrev--reset-global-variables)
+ (setq direction (if (null arg)
+ (if dabbrev-backward-only 1 0)
+ (prefix-numeric-value arg)))
+ (setq abbrev (dabbrev--abbrev-at-point))
+ (setq record-case-pattern t)
+ (setq old nil)))
+
+ ;;--------------------------------
+ ;; Find the expansion
+ ;;--------------------------------
+ (or expansion
+ (setq expansion
+ (dabbrev--find-expansion abbrev direction
+ (and (if (eq dabbrev-case-fold-search 'case-fold-search)
+ case-fold-search
+ dabbrev-case-fold-search)
+ (or (not dabbrev-upcase-means-case-search)
+ (string= abbrev (downcase abbrev))))))))
+ (cond
+ ((not expansion)
+ (dabbrev--reset-global-variables)
+ (if old
+ (save-excursion
+ (setq buffer-undo-list (cons orig-point buffer-undo-list))
+ ;; Put back the original abbrev with its original case pattern.
+ (search-backward old)
+ (insert abbrev)
+ (delete-region (point) (+ (point) (length old)))))
+ (error "No%s dynamic expansion for `%s' found"
+ (if old " further" "") abbrev))
+ (t
+ (if (not (or (eq dabbrev--last-buffer dabbrev--last-buffer-found)
+ (minibuffer-window-active-p (selected-window))))
+ (progn
+ (message "Expansion found in '%s'"
+ (buffer-name dabbrev--last-buffer))
+ (setq dabbrev--last-buffer-found dabbrev--last-buffer))
+ (message nil))
+ (if (and (or (eq (current-buffer) dabbrev--last-buffer)
+ (null dabbrev--last-buffer))
+ (numberp dabbrev--last-expansion-location)
+ (and (> dabbrev--last-expansion-location (point))))
+ (setq dabbrev--last-expansion-location
+ (copy-marker dabbrev--last-expansion-location)))
+ ;; Success: stick it in and return.
+ (setq buffer-undo-list (cons orig-point buffer-undo-list))
+ (dabbrev--substitute-expansion old abbrev expansion
+ record-case-pattern)
+
+ ;; Save state for re-expand.
+ (setq dabbrev--last-expansion expansion)
+ (setq dabbrev--last-abbreviation abbrev)
+ (setq dabbrev--last-abbrev-location (point-marker))))))
+
+;;----------------------------------------------------------------
+;; Local functions
+;;----------------------------------------------------------------
+
+;;; Checks if OTHER-BUFFER has the same major mode as current buffer.
+(defun dabbrev--same-major-mode-p (other-buffer)
+ (eq major-mode
+ (save-excursion
+ (set-buffer other-buffer)
+ major-mode)))
+
+;;; Back over all abbrev type characters and then moves forward over
+;;; all skip characters.
+(defun dabbrev--goto-start-of-abbrev ()
+ ;; Move backwards over abbrev chars
+ (save-match-data
+ (when (> (point) (minibuffer-prompt-end))
+ (forward-char -1)
+ (while (and (looking-at dabbrev--abbrev-char-regexp)
+ (> (point) (minibuffer-prompt-end))
+ (not (= (point) (field-beginning (point) nil
+ (1- (point))))))
+ (forward-char -1))
+ (or (looking-at dabbrev--abbrev-char-regexp)
+ (forward-char 1)))
+ (and dabbrev-abbrev-skip-leading-regexp
+ (while (looking-at dabbrev-abbrev-skip-leading-regexp)
+ (forward-char 1)))))
+
+;;; Extract the symbol at point to serve as abbreviation.
+(defun dabbrev--abbrev-at-point ()
+ ;; Check for error
+ (if (bobp)
+ (error "No possible abbreviation preceding point"))
+ ;; Return abbrev at point
+ (save-excursion
+ ;; Record the end of the abbreviation.
+ (setq dabbrev--last-abbrev-location (point))
+ ;; If we aren't right after an abbreviation,
+ ;; move point back to just after one.
+ ;; This is so the user can get successive words
+ ;; by typing the punctuation followed by M-/.
+ (save-match-data
+ (if (save-excursion
+ (forward-char -1)
+ (not (looking-at (concat "\\("
+ (or dabbrev-abbrev-char-regexp
+ "\\sw\\|\\s_")
+ "\\)+"))))
+ (if (re-search-backward (or dabbrev-abbrev-char-regexp
+ "\\sw\\|\\s_")
+ nil t)
+ (forward-char 1)
+ (error "No possible abbreviation preceding point"))))
+ ;; Now find the beginning of that one.
+ (dabbrev--goto-start-of-abbrev)
+ (buffer-substring-no-properties
+ dabbrev--last-abbrev-location (point))))
+
+;;; Initializes all global variables
+(defun dabbrev--reset-global-variables ()
+ ;; dabbrev--last-obarray and dabbrev--last-completion-buffer
+ ;; must not be reset here.
+ (setq dabbrev--last-table nil
+ dabbrev--last-abbreviation nil
+ dabbrev--last-abbrev-location nil
+ dabbrev--last-direction nil
+ dabbrev--last-expansion nil
+ dabbrev--last-expansion-location nil
+ dabbrev--friend-buffer-list nil
+ dabbrev--last-buffer nil
+ dabbrev--last-buffer-found nil
+ dabbrev--abbrev-char-regexp (or dabbrev-abbrev-char-regexp
+ "\\sw\\|\\s_")
+ dabbrev--check-other-buffers dabbrev-check-other-buffers))
+
+(defun dabbrev--select-buffers ()
+ "Return a list of other buffers to search for a possible abbrev.
+The current buffer is not included in the list.
+
+This function makes a list of all the buffers returned by `buffer-list',
+then discards buffers whose names match `dabbrev-ignored-buffer-names'
+or `dabbrev-ignored-buffer-regexps'. It also discards buffers for which
+`dabbrev-friend-buffer-function', if it is bound, returns nil when called
+with the buffer as argument.
+It returns the list of the buffers that are not discarded."
+ (dabbrev-filter-elements
+ buffer (buffer-list)
+ (and (not (eq (current-buffer) buffer))
+ (not (dabbrev--ignore-buffer-p buffer))
+ (boundp 'dabbrev-friend-buffer-function)
+ (funcall dabbrev-friend-buffer-function buffer))))
+
+(defun dabbrev--try-find (abbrev reverse n ignore-case)
+ "Search for ABBREV, backwards if REVERSE, N times.
+If IGNORE-CASE is non-nil, ignore case while searching.
+Return the expansion found, and save the location of the start
+of the expansion in `dabbrev--last-expansion-location'."
+ (save-excursion
+ (save-restriction
+ (widen)
+ (let ((expansion nil))
+ (and dabbrev--last-expansion-location
+ (goto-char dabbrev--last-expansion-location))
+ (let ((case-fold-search ignore-case)
+ (count n))
+ (while (and (> count 0)
+ (setq expansion (dabbrev--search abbrev
+ reverse
+ (and ignore-case
+ (if (eq dabbrev-case-distinction 'case-replace)
+ case-replace
+ dabbrev-case-distinction))
+ )))
+ (setq count (1- count))))
+ (and expansion
+ (setq dabbrev--last-expansion-location (point)))
+ expansion))))
+
+(defun dabbrev--find-all-expansions (abbrev ignore-case)
+ "Return a list of all possible expansions of ABBREV.
+If IGNORE-CASE is non-nil, accept matches which differ in case."
+ (let ((all-expansions nil)
+ expansion)
+ (save-excursion
+ (goto-char (point-min))
+ (while (setq expansion (dabbrev--find-expansion abbrev -1 ignore-case))
+ (setq all-expansions (cons expansion all-expansions))))
+ all-expansions))
+
+(defun dabbrev--scanning-message ()
+ (unless (window-minibuffer-p (selected-window))
+ (message "Scanning `%s'" (buffer-name (current-buffer)))))
+
+(defun dabbrev--ignore-buffer-p (buffer)
+ "Return non-nil if BUFFER should be ignored by dabbrev."
+ (let ((bn (buffer-name buffer)))
+ (or (member bn dabbrev-ignored-buffer-names)
+ (let ((tail dabbrev-ignored-buffer-regexps)
+ (match nil))
+ (while (and tail (not match))
+ (setq match (string-match (car tail) bn)
+ tail (cdr tail)))
+ match))))
+
+(defun dabbrev--find-expansion (abbrev direction ignore-case)
+ "Find one occurrence of ABBREV, and return the expansion.
+DIRECTION > 0 means look that many times backwards.
+DIRECTION < 0 means look that many times forward.
+DIRECTION = 0 means try both backward and forward.
+IGNORE-CASE non-nil means ignore case when searching.
+This sets `dabbrev--last-direction' to 1 or -1 according
+to the direction in which the occurrence was actually found.
+It sets `dabbrev--last-expansion-location' to the location
+of the start of the occurrence."
+ (save-excursion
+ ;; If we were scanning something other than the current buffer,
+ ;; continue scanning there.
+ (when dabbrev--last-buffer
+ (set-buffer dabbrev--last-buffer)
+ (dabbrev--scanning-message))
+ (or
+ ;; ------------------------------------------
+ ;; Look backward in current buffer.
+ ;; ------------------------------------------
+ (and (not dabbrev-search-these-buffers-only)
+ (>= direction 0)
+ (setq dabbrev--last-direction (min 1 direction))
+ (dabbrev--try-find abbrev t
+ (max 1 direction)
+ ignore-case))
+ ;; ------------------------------------------
+ ;; Look forward in current buffer
+ ;; or whatever buffer we were last scanning.
+ ;; ------------------------------------------
+ (and (or (not dabbrev-search-these-buffers-only)
+ dabbrev--last-buffer)
+ (<= direction 0)
+ (setq dabbrev--last-direction -1)
+ (dabbrev--try-find abbrev nil
+ (max 1 (- direction))
+ ignore-case))
+ ;; ------------------------------------------
+ ;; Look in other buffers.
+ ;; Always start at (point-min) and look forward.
+ ;; ------------------------------------------
+ (progn
+ (setq dabbrev--last-direction -1)
+ (unless dabbrev--last-buffer
+ ;; If we have just now begun to search other buffers,
+ ;; determine which other buffers we should check.
+ ;; Put that list in dabbrev--friend-buffer-list.
+ (or dabbrev--friend-buffer-list
+ (setq dabbrev--friend-buffer-list
+ (dabbrev--make-friend-buffer-list))))
+ ;; Walk through the buffers till we find a match.
+ (let (expansion)
+ (while (and (not expansion) dabbrev--friend-buffer-list)
+ (setq dabbrev--last-buffer (pop dabbrev--friend-buffer-list))
+ (set-buffer dabbrev--last-buffer)
+ (dabbrev--scanning-message)
+ (setq dabbrev--last-expansion-location (point-min))
+ (setq expansion (dabbrev--try-find abbrev nil 1 ignore-case)))
+ expansion)))))
+
+;; Compute the list of buffers to scan.
+;; If dabbrev-search-these-buffers-only, then the current buffer
+;; is included in this list if it should be searched.
+;; Otherwise, the current buffer is searched first specially.,
+;; and it is not included in this list.
+(defun dabbrev--make-friend-buffer-list ()
+ (let ((list (mapcar (function get-buffer)
+ dabbrev-search-these-buffers-only)))
+ (when (and (null dabbrev-search-these-buffers-only)
+ dabbrev--check-other-buffers
+ (or (eq dabbrev--check-other-buffers t)
+ (setq dabbrev--check-other-buffers
+ (y-or-n-p "Scan other buffers also? "))))
+ (setq list (funcall dabbrev-select-buffers-function))
+ ;; If dabbrev-check-all-buffers, tack on all the other
+ ;; buffers at the end of the list, except those which are
+ ;; specifically to be ignored.
+ (if dabbrev-check-all-buffers
+ (setq list
+ (append list
+ (dabbrev-filter-elements
+ buffer (buffer-list)
+ (and (not (memq buffer list))
+ (not (dabbrev--ignore-buffer-p buffer)))))))
+ ;; Remove the current buffer.
+ (setq list (delq (current-buffer) list)))
+ ;; Move buffers in the list that are visible on the screen
+ ;; to the front of the list, but don't add anything to the list.
+ (if list
+ (walk-windows (lambda (w)
+ (unless (eq w (selected-window))
+ (if (memq (window-buffer w) list)
+ (setq list
+ (cons (window-buffer w)
+ (delq (window-buffer w)
+ list))))))))
+ ;; In a minibuffer, search the buffer it was activated from,
+ ;; first after the minibuffer itself. Unless we aren't supposed
+ ;; to search the current buffer either.
+ (if (and (window-minibuffer-p (selected-window))
+ (not dabbrev-search-these-buffers-only))
+ (setq list
+ (cons (dabbrev--minibuffer-origin)
+ (delq (dabbrev--minibuffer-origin) list))))
+ list))
+
+(defun dabbrev--safe-replace-match (string &optional fixedcase literal)
+ (if (eq major-mode 'picture-mode)
+ (with-no-warnings
+ (picture-replace-match string fixedcase literal))
+ (replace-match string fixedcase literal)))
+
+;;;----------------------------------------------------------------
+(defun dabbrev--substitute-expansion (old abbrev expansion record-case-pattern)
+ "Replace OLD with EXPANSION in the buffer.
+OLD is text currently in the buffer, perhaps the abbreviation
+or perhaps another expansion that was tried previously.
+ABBREV is the abbreviation we are expanding.
+It is \" \" if we are copying subsequent words.
+EXPANSION is the expansion substring to be used this time.
+RECORD-CASE-PATTERN, if non-nil, means set `dabbrev--last-case-pattern'
+to record whether we upcased the expansion, downcased it, or did neither."
+ ;;(undo-boundary)
+ (let ((use-case-replace (and (if (eq dabbrev-case-fold-search 'case-fold-search)
+ case-fold-search
+ dabbrev-case-fold-search)
+ (or (not dabbrev-upcase-means-case-search)
+ (string= abbrev (downcase abbrev)))
+ (if (eq dabbrev-case-replace 'case-replace)
+ case-replace
+ dabbrev-case-replace))))
+
+ ;; If we upcased or downcased the original expansion,
+ ;; do likewise for the subsequent words when we copy them.
+ ;; Don't do any of the usual case processing, though.
+ (when (equal abbrev " ")
+ (if dabbrev--last-case-pattern
+ (setq expansion
+ (funcall dabbrev--last-case-pattern expansion)))
+ (setq use-case-replace nil))
+
+ ;; If the expansion has mixed case
+ ;; and it is not simply a capitalized word,
+ ;; or if the abbrev has mixed case,
+ ;; and if the given abbrev's case pattern
+ ;; matches the start of the expansion,
+ ;; copy the expansion's case
+ ;; instead of downcasing all the rest.
+ ;;
+ ;; Treat a one-capital-letter (possibly with preceding non-letter
+ ;; characters) abbrev as "not all upper case", so as to force
+ ;; preservation of the expansion's pattern if the expansion starts
+ ;; with a capital letter.
+ (let ((expansion-rest (substring expansion 1))
+ (first-letter-position (string-match "[[:alpha:]]" abbrev)))
+ (if (or (null first-letter-position)
+ (and (not (and (or (string= expansion-rest (downcase expansion-rest))
+ (string= expansion-rest (upcase expansion-rest)))
+ (or (string= abbrev (downcase abbrev))
+ (and (string= abbrev (upcase abbrev))
+ (> (- (length abbrev) first-letter-position)
+ 1)))))
+ (string= abbrev
+ (substring expansion 0 (length abbrev)))))
+ (setq use-case-replace nil)))
+
+ ;; If the abbrev and the expansion are both all-lower-case
+ ;; then don't do any conversion. The conversion would be a no-op
+ ;; for this replacement, but it would carry forward to subsequent words.
+ ;; The goal of this is to prevent that carrying forward.
+ (if (and (string= expansion (downcase expansion))
+ (string= abbrev (downcase abbrev)))
+ (setq use-case-replace nil))
+
+ (if use-case-replace
+ (setq expansion (downcase expansion)))
+
+ ;; In case we insert subsequent words,
+ ;; record if we upcased or downcased the first word,
+ ;; in order to do likewise for subsequent words.
+ (and record-case-pattern
+ (setq dabbrev--last-case-pattern
+ (and use-case-replace
+ (cond ((equal abbrev (upcase abbrev)) 'upcase)
+ ((equal abbrev (downcase abbrev)) 'downcase)))))
+
+ ;; Convert whitespace to single spaces.
+ (if dabbrev--eliminate-newlines
+ ;; Start searching at end of ABBREV so that any whitespace
+ ;; carried over from the existing text is not changed.
+ (let ((pos (length abbrev)))
+ (while (string-match "[\n \t]+" expansion pos)
+ (setq pos (1+ (match-beginning 0)))
+ (setq expansion (replace-match " " nil nil expansion)))))
+
+ (if old
+ (save-excursion
+ (search-backward old))
+ ;;(set-match-data (list (point-marker) (point-marker)))
+ (search-backward abbrev)
+ (search-forward abbrev))
+
+ ;; Make case of replacement conform to case of abbreviation
+ ;; provided (1) that kind of thing is enabled in this buffer
+ ;; and (2) the replacement itself is all lower case.
+ (dabbrev--safe-replace-match expansion
+ (not use-case-replace)
+ t)))
+
+
+;;;----------------------------------------------------------------
+;;; Search function used by dabbrevs library.
+
+
+(defun dabbrev--search (abbrev reverse ignore-case)
+ "Search for something that could be used to expand ABBREV.
+
+Second arg, REVERSE, is t for reverse search, nil for forward.
+The variable `dabbrev-limit' controls the maximum search region size.
+Third argument IGNORE-CASE non-nil means treat case as insignificant while
+looking for a match and when comparing with previous matches. Also if
+that's non-nil and the match is found at the beginning of a sentence
+and is in lower case except for the initial then it is converted to
+all lower case for return.
+
+Table of expansions already seen is examined in buffer
+`dabbrev--last-table' so that only distinct possibilities are found
+by dabbrev-re-expand.
+
+Returns the expansion found, or nil if not found.
+Leaves point at the location of the start of the expansion."
+ (save-match-data
+ (let ((pattern1 (concat (regexp-quote abbrev)
+ "\\(" dabbrev--abbrev-char-regexp "\\)"))
+ (pattern2 (concat (regexp-quote abbrev)
+ "\\(\\(" dabbrev--abbrev-char-regexp "\\)+\\)"))
+ ;; This makes it possible to find matches in minibuffer prompts
+ ;; even when they are "inviolable".
+ (inhibit-point-motion-hooks t)
+ found-string result)
+ ;; Limited search.
+ (save-restriction
+ (and dabbrev-limit
+ (narrow-to-region dabbrev--last-expansion-location
+ (+ (point)
+ (if reverse (- dabbrev-limit) dabbrev-limit))))
+ ;;--------------------------------
+ ;; Look for a distinct expansion, using dabbrev--last-table.
+ ;;--------------------------------
+ (while (and (not found-string)
+ (if reverse
+ (re-search-backward pattern1 nil t)
+ (re-search-forward pattern1 nil t)))
+ (goto-char (match-beginning 0))
+ ;; In case we matched in the middle of a word,
+ ;; back up to start of word and verify we still match.
+ (dabbrev--goto-start-of-abbrev)
+
+ (if (not (looking-at pattern1))
+ nil
+ ;; We have a truly valid match. Find the end.
+ (re-search-forward pattern2)
+ (setq found-string (match-string-no-properties 0))
+ (setq result found-string)
+ (and ignore-case (setq found-string (downcase found-string)))
+ ;; Ignore this match if it's already in the table.
+ (if (dabbrev-filter-elements
+ table-string dabbrev--last-table
+ (string= found-string table-string))
+ (setq found-string nil)))
+ ;; Prepare to continue searching.
+ (goto-char (if reverse (match-beginning 0) (match-end 0))))
+ ;; If we found something, use it.
+ (when found-string
+ ;; Put it into `dabbrev--last-table'
+ ;; and return it (either downcased, or as is).
+ (setq dabbrev--last-table
+ (cons found-string dabbrev--last-table))
+ result)))))
+
+(dolist (mess '("^No dynamic expansion for .* found$"
+ "^No further dynamic expansion for .* found$"
+ "^No possible abbreviation preceding point$"))
+ (add-to-list 'debug-ignored-errors mess))
+
+(provide 'dabbrev)
+
+;;; arch-tag: 29e58596-f080-4306-a409-70296cf9d46f
+;;; dabbrev.el ends here
HCoop / bpt / emacs.git / blobdiff