/usr/share/emacs/site-lisp/wl/utils/wl-complete.el is in wl-beta 2.15.9+0.20171209-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;; Author: Masahiro MURATA <muse@ba2.so-net.ne.jp>
;; Kazu Yamamoto <Kazu@Mew.org>
;; Keywords: mail, net news
;;; Commentary:
;; Insert the following lines in your ~/.wl
;;
;; (require 'wl-addrbook)
;; (wl-addrbook-setup)
;; Original code: Kazu Yamamoto <Kazu@Mew.org>
;; mew-complete.el (Mew developing team)
;;; Code:
(require 'wl-util)
(require 'wl-addrbook)
(defvar wl-mail-domain-list nil)
(defvar wl-from-list nil)
(defvar wl-complete-lwsp "^[ \t]")
(defvar wl-complete-address-separator ":, \t\n")
(defvar wl-field-completion-switch
'(("To:" . wl-addrbook-complete-address)
("Cc:" . wl-addrbook-complete-address)
("Dcc:" . wl-addrbook-complete-address)
("Bcc:" . wl-addrbook-complete-address)
("Reply-To:" . wl-addrbook-complete-address)
("Mail-Reply-To:" . wl-addrbook-complete-address)
("Return-Receipt-To:" . wl-addrbook-complete-address)
("Newsgroups:" . wl-complete-newsgroups)
("Followup-To:" . wl-complete-newsgroups)
("Fcc:" . wl-complete-folder)
)
"*Completion function alist concerned with the key.")
(defvar wl-field-circular-completion-switch
'(("To:" . wl-circular-complete-domain)
("Cc:" . wl-circular-complete-domain)
("Dcc:" . wl-circular-complete-domain)
("Bcc:" . wl-circular-complete-domain)
("Reply-To:" . wl-circular-complete-domain)
("From:" . wl-circular-complete-from))
"*Circular completion function alist concerned with the key.")
(defvar wl-field-expansion-switch
'(("To:" . wl-addrbook-expand-address)
("Cc:" . wl-addrbook-expand-address)
("Dcc:" . wl-addrbook-expand-address)
("Bcc:" . wl-addrbook-expand-address)
("Reply-To:" . wl-addrbook-expand-address))
"*expansion function alist concerned with the key.")
;;; Code:
(defun wl-string-match-assoc (key alist &optional case-ignore)
(let (a
(case-fold-search case-ignore))
(catch 'loop
(while alist
(setq a (car alist))
(if (and (consp a)
(stringp (car a))
(string-match key (car a)))
(throw 'loop a))
(setq alist (cdr alist))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Low level functions
;;;
(defsubst wl-draft-on-header-p ()
(< (point)
(save-excursion
(goto-char (point-min))
(search-forward (concat "\n" mail-header-separator "\n") nil 0)
(point))))
(defun wl-draft-on-value-p (switch)
(if (wl-draft-on-header-p)
(save-excursion
(beginning-of-line)
(while (and (< (point-min) (point)) (looking-at wl-complete-lwsp))
(forward-line -1))
(if (looking-at "\\([^:]*:\\)")
(wl-string-match-assoc (wl-match-buffer 1) switch t)
nil)))) ;; what a case reachs here?
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Completion function: C-i
;;;
(defun wl-draft-addrbook-header-comp-or-tab (force)
(interactive "P")
(let ((case-fold-search t)
func)
(if (wl-draft-on-field-p)
(wl-complete-field)
(if (and
(wl-draft-on-header-p)
(setq func (wl-draft-on-value-p wl-field-completion-switch)))
(funcall (cdr func))
(indent-for-tab-command)))))
(defun wl-complete-newsgroups ()
(interactive)
(wl-complete-field-body wl-folder-newsgroups-hashtb))
;;(wl-address-complete-address wl-folder-newsgroups-hashtb))
(defun wl-complete-folder ()
"Folder complete function for Fcc:."
(interactive)
(let ((word (wl-delete-backward-char)))
(if (null word)
(wl-complete-window-show (list "+" "%"))
(wl-complete word wl-folder-entity-hashtb "folder" nil))))
(defun wl-addrbook-complete-address ()
"Complete and expand address aliases.
First alias key is completed. When completed solely or the @ character
is inserted before the cursor, the alias key is expanded to its value."
(interactive)
(let ((word (wl-delete-backward-char)))
(if (null word)
(tab-to-tab-stop)
(if (string-match "@." word)
(insert (or (wl-alias-next word) word))
(wl-complete
word wl-addrbook-alist "alias" ?@ nil nil
(function wl-addrbook-alias-get)
(function wl-addrbook-alias-hit))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Circular completion: C-cC-i
;;;
(defun wl-draft-circular-comp ()
"Switch function for circular complete functions."
(interactive)
(let ((func (wl-draft-on-value-p wl-field-circular-completion-switch)))
(if func
(funcall (cdr func))
(message "No circular completion here"))))
(defun wl-circular-complete-domain ()
"Circular completion of domains for To:, Cc:, etc.
If the @ character does not exist, the first value of
wl-mail-domain-list is inserted. If exists, the next value of
wl-mail-domain-list concerned with the string between @ and
the cursor is inserted."
(interactive)
(let ((word (wl-delete-backward-char "@")))
(cond
((equal word nil) ;; @ doesn't exist.
(if (null wl-mail-domain-list)
(message "For domain circular completion, set wl-mail-domain-list")
(insert "@")
(insert (car wl-mail-domain-list))
(wl-complete-window-delete)))
((equal word t) ;; just after @
(if (null wl-mail-domain-list)
(message "For domain circular completion, set wl-mail-domain-list")
(insert (car wl-mail-domain-list))
(wl-complete-window-delete)))
(t
;; can't use wl-get-next since completion is necessary sometime.
(wl-complete
word
(wl-slide-pair wl-mail-domain-list)
"domain"
t)) ;; use cdr
)))
(defun wl-circular-complete (msg clist cname &optional here)
"General circular complete function to call wl-complete."
(interactive)
(let ((str (wl-delete-value here)))
(if (null str)
(if (car clist)
(insert (car clist))
(message "For circular completion, set %s" cname))
(wl-complete
str
(wl-slide-pair clist)
msg
t)))) ;; use cdr
(defun wl-circular-complete-from ()
"Circular complete function for From:."
(interactive)
(wl-circular-complete "from" wl-from-list "wl-from-list"))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Expansion : M-C-i
;;;
(defun wl-draft-addrbook-expand ()
"Switch function for expand functions."
(interactive)
(let ((func (wl-draft-on-value-p wl-field-expansion-switch)))
(if func
(funcall (cdr func))
(message "No expansion here"))))
(defun wl-addrbook-expand-address ()
"Address expansion fuction for To:, Cc:, etc.
\"user@domain\" will be expands \"name <user@domain>\" if
the name exists."
(interactive)
(let ((word (wl-delete-backward-char)) name)
(if (null word)
(message "No address here")
(setq name (wl-addrbook-name-get word))
(insert
(if name (format "%s <%s>" name word) word)))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Hart function for completions
;;;
(defun-maybe characterp (form)
(numberp form))
(eval-and-compile
(fset 'wl-complete-hit (symbol-function 'assoc)))
(defun wl-complete-get (key alist)
(cdr (wl-complete-hit key alist)))
(defun wl-complete (WORD ALIST MSG EXPAND-CHAR &optional TRY ALL GET HIT)
(let* ((ftry (or TRY (function try-completion)))
(fall (or ALL (function all-completions)))
(fget (or GET (function wl-complete-get)))
(fhit (or HIT (function wl-complete-hit)))
(cmp (funcall ftry WORD ALIST))
(all (funcall fall WORD ALIST))
(len (length WORD))
subkey)
(cond
;; already completed
((eq cmp t)
(if EXPAND-CHAR ;; may be "t"
(insert (funcall fget WORD ALIST)) ;; use cdr
(insert WORD)) ;; use car
(wl-complete-window-delete))
;; EXPAND
((and (characterp EXPAND-CHAR)
(char-equal (aref WORD (1- len)) EXPAND-CHAR)
(setq subkey (substring WORD 0 (1- len)))
(funcall fhit subkey ALIST))
(insert (funcall fget subkey ALIST)) ;; use cdr
(wl-complete-window-delete))
;; just one candidate
((equal 1 (length all))
(insert cmp)
(wl-complete-window-delete)
(if (window-minibuffer-p (get-buffer-window (current-buffer)))
(wl-complete-temp-minibuffer-message " [Sole completion]")
(message "Sole completion")))
;; two or more candidates
((stringp cmp) ;; (length all) > 1
(insert cmp)
(wl-complete-window-show all)
(if (and EXPAND-CHAR (funcall fhit cmp ALIST))
(message
(substitute-command-keys
"To expand %s, type %c then '\\<wl-draft-mode-map>\\[wl-draft-addrbook-header-comp-or-tab]'.")
cmp EXPAND-CHAR)))
;; no candidate
(t
(insert WORD)
(if (window-minibuffer-p (get-buffer-window (current-buffer)))
(wl-complete-temp-minibuffer-message (concat " No matching " MSG))
(message "No matching %s" MSG))))))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;;
;;; Minibuf magic
;;;
(defun wl-complete-temp-minibuffer-message (m)
(let ((savemax (point-max)))
(save-excursion
(goto-char (point-max))
(insert m))
(let ((inhibit-quit t))
(sit-for 2)
(delete-region savemax (point-max))
(if quit-flag (setq quit-flag nil unread-command-events 7)))))
;;
;; Extracting completion key
;;
(defun wl-delete-backward-char (&optional here)
"Delete appropriate preceeding word and return it."
(interactive)
(let ((case-fold-search t)
(start nil)
(end (point))
(regex (concat "[^" wl-complete-address-separator "]")))
(save-excursion
(while (and (not (bobp))
(string-match regex (buffer-substring-no-properties
(1- (point)) (point))))
(backward-char))
(if (and here (not (re-search-forward (regexp-quote here) end t)))
nil ;; "here" doesn't exist.
(setq start (point))
(if (= start end)
(if here t nil) ;; just after "here", just after separator
(prog1
(buffer-substring-no-properties start end)
(delete-region start end)))))))
(defun wl-delete-value (&optional here)
(beginning-of-line)
(if (not (looking-at "[^:]+:"))
()
(goto-char (match-end 0))
(if (looking-at "[ \t]")
(forward-char)
(insert " "))
(if (eolp)
nil
(let ((start (point)) ret)
(end-of-line)
(if (and here (re-search-backward (regexp-quote here) start t))
(progn
(setq start (1+ (point)))
(end-of-line)))
(setq ret (buffer-substring-no-properties start (point)))
(delete-region start (point))
ret))))
;;
;; Making alist
;;
(defun wl-slide-pair (x)
(let ((ret nil)
(first (car x)))
(cond
((eq x 0) nil)
((eq x 1) (cons first first))
(t
(while (cdr x)
(setq ret (cons (cons (nth 0 x) (nth 1 x)) ret))
(setq x (cdr x)))
(setq ret (cons (cons (car x) first) ret))
(nreverse ret)))))
(provide 'wl-complete)
;;; Copyright Notice:
;; Copyright (C) 1997-2001 Mew developing team.
;; Copyright (C) 2001 Masahiro Murata <muse@ba2.so-net.ne.jp>
;; All rights reserved.
;; Redistribution and use in source and binary forms, with or without
;; modification, are permitted provided that the following conditions
;; are met:
;;
;; 1. Redistributions of source code must retain the above copyright
;; notice, this list of conditions and the following disclaimer.
;; 2. Redistributions in binary form must reproduce the above copyright
;; notice, this list of conditions and the following disclaimer in the
;; documentation and/or other materials provided with the distribution.
;; 3. Neither the name of the team nor the names of its contributors
;; may be used to endorse or promote products derived from this software
;; without specific prior written permission.
;;
;; THIS SOFTWARE IS PROVIDED BY THE TEAM AND CONTRIBUTORS ``AS IS'' AND
;; ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
;; IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
;; PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE TEAM OR CONTRIBUTORS BE
;; LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
;; CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
;; SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
;; BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
;; WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
;; OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
;; IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
;;; wl-complete.el ends here
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