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+;; complete.el -- partial completion mechanism plus other goodies.
+
+;; Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+
+;; Author: Dave Gillespie <daveg@synaptics.com>
+;; Version: 2.02
+;; Special thanks to Hallvard Furuseth for his many ideas and contributions.
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY.  No author or distributor
+;; accepts responsibility to anyone for the consequences of using it
+;; or for whether it serves any particular purpose or works at all,
+;; unless he says so in writing.  Refer to the GNU Emacs General Public
+;; License for full details.
+
+;; Everyone is granted permission to copy, modify and redistribute
+;; GNU Emacs, but only under the conditions described in the
+;; GNU Emacs General Public License.   A copy of this license is
+;; supposed to have been given to you along with GNU Emacs so you
+;; can know your rights and responsibilities.  It should be in a
+;; file named COPYING.  Among other things, the copyright notice
+;; and this notice must be preserved on all copies.
+
+
+;; Commentary:
+
+;; Extended completion for the Emacs minibuffer.
+;;
+;; The basic idea is that the command name or other completable text is
+;; divided into words and each word is completed separately, so that
+;; "M-x p-b" expands to "M-x print-buffer".  If the entry is ambiguous
+;; each word is completed as much as possible and then the cursor is
+;; left at the first position where typing another letter will resolve
+;; the ambiguity.
+;;
+;; Word separators for this purpose are hyphen, space, and period.
+;; These would most likely occur in command names, Info menu items,
+;; and file names, respectively.  But all word separators are treated
+;; alike at all times.
+;;
+;; This completion package replaces the old-style completer's key
+;; bindings for TAB, SPC, RET, and `?'.  The old completer is still
+;; available on the Meta versions of those keys.  If you set
+;; PC-meta-flag to nil, the old completion keys will be left alone
+;; and the partial completer will use the Meta versions of the keys.
+
+
+;; Usage:  Load this file.  Now, during completable minibuffer entry,
+;;
+;;     TAB    means to do a partial completion;
+;;     SPC    means to do a partial complete-word;
+;;     RET    means to do a partial complete-and-exit;
+;;     ?      means to do a partial completion-help.
+;;
+;; If you set PC-meta-flag to nil, then TAB, SPC, RET, and ? perform
+;; original Emacs completions, and M-TAB etc. do partial completion.
+;; To do this, put the command,
+;;
+;;       (setq PC-meta-flag nil)
+;;
+;; in your .emacs file.  To load partial completion automatically, put
+;;
+;;       (load "complete")
+;;
+;; in your .emacs file, too.  Things will be faster if you byte-compile
+;; this file when you install it.
+;;
+;; As an extra feature, in cases where RET would not normally
+;; complete (such as `C-x b'), the M-RET key will always do a partial
+;; complete-and-exit.  Thus `C-x b f.c RET' will select or create a
+;; buffer called "f.c", but `C-x b f.c M-RET' will select the existing
+;; buffer whose name matches that pattern (perhaps "filing.c").
+;; (PC-meta-flag does not affect this behavior; M-RET used to be
+;; undefined in this situation.)
+;;
+;; The regular M-TAB (lisp-complete-symbol) command also supports
+;; partial completion in this package.
+
+;; This package also contains a wildcard feature for C-x C-f (find-file).
+;; For example, `C-x C-f *.c RET' loads all .c files at once, exactly
+;; as if you had typed C-x C-f separately for each file.  Completion
+;; is supported in connection with wildcards.  Currently only the `*'
+;; wildcard character works.
+
+;; File name completion does not do partial completion of directories
+;; on the path, e.g., "/u/b/f" will not complete to "/usr/bin/foo",
+;; but you can put *'s in the path to accomplish this:  "/u*/b*/f".
+;; Stars are required for performance reasons.
+
+;; In addition, this package includes a feature for accessing include
+;; files.  For example, `C-x C-f <sys/time.h> RET' reads the file
+;; /usr/include/sys/time.h.  The variable PC-include-file-path is a
+;; list of directories in which to search for include files.  Completion
+;; is supported in include file names.
+
+
+;; Code:
+
+(defvar PC-meta-flag t
+  "*If nil, TAB does normal Emacs completion and M-TAB does Partial Completion.
+If t, TAB does Partial Completion and M-TAB does normal completion.")
+
+
+(defvar PC-word-delimiters "-_. "
+  "*A string of characters which are to be treated as word delimiters
+by the Partial Completion system.
+
+Some arcane rules:  If `]' is in this string it must come first.
+If `^' is in this string it must NOT come first.  If `-' is in this
+string, it must come first or right after `]'.  In other words, if
+S is this string, then `[S]' must be a legal Emacs regular expression
+(not containing character ranges like `a-z').")
+
+
+(defvar PC-first-char 'x
+  "*If t, first character of a string to be completed is always taken literally.
+If nil, word delimiters are handled even if they appear as first character.
+This controls whether \".e\" matches \".e*\" (t) or \"*.e*\" (nil).
+If neither nil nor t, first char is literal only for filename completion.")
+
+
+(defvar PC-include-file-path '("/usr/include")
+  "*List of directories in which to look for include files.
+If this is nil, uses the colon-separated path in $INCPATH instead.")
+
+
+(defvar PC-disable-wildcards nil
+  "Set this to non-nil to disable wildcard support in \\[find-file].")
+
+(defvar PC-disable-includes nil
+  "Set this to non-nil to disable include-file support in \\[find-file].")
+
+
+(defvar PC-default-bindings t
+  "Set this to nil to suppress the default partial completion key bindings.")
+
+(if PC-default-bindings (progn
+(define-key minibuffer-local-completion-map "\t" 'PC-complete)
+(define-key minibuffer-local-completion-map " "  'PC-complete-word)
+(define-key minibuffer-local-completion-map "?"  'PC-completion-help)
+
+(define-key minibuffer-local-completion-map "\e\t" 'PC-complete)
+(define-key minibuffer-local-completion-map "\e "  'PC-complete-word)
+(define-key minibuffer-local-completion-map "\e\r" 'PC-force-complete-and-exit)
+(define-key minibuffer-local-completion-map "\e\n" 'PC-force-complete-and-exit)
+(define-key minibuffer-local-completion-map "\e?"  'PC-completion-help)
+
+(define-key minibuffer-local-must-match-map "\t" 'PC-complete)
+(define-key minibuffer-local-must-match-map " "  'PC-complete-word)
+(define-key minibuffer-local-must-match-map "\r" 'PC-complete-and-exit)
+(define-key minibuffer-local-must-match-map "\n" 'PC-complete-and-exit)
+(define-key minibuffer-local-must-match-map "?"  'PC-completion-help)
+
+(define-key minibuffer-local-must-match-map "\e\t" 'PC-complete)
+(define-key minibuffer-local-must-match-map "\e "  'PC-complete-word)
+(define-key minibuffer-local-must-match-map "\e\r" 'PC-complete-and-exit)
+(define-key minibuffer-local-must-match-map "\e\n" 'PC-complete-and-exit)
+(define-key minibuffer-local-must-match-map "\e?"  'PC-completion-help)
+
+(define-key global-map "\e\t" 'PC-lisp-complete-symbol)
+))
+
+
+(defun PC-complete ()
+  "Like minibuffer-complete, but allows \"b--di\"-style abbreviations.
+For example, \"M-x b--di\" would match `byte-recompile-directory', or any
+name which consists of three or more words, the first beginning with \"b\"
+and the third beginning with \"di\".
+
+The pattern \"b--d\" is ambiguous for `byte-recompile-directory' and
+`beginning-of-defun', so this would produce a list of completions
+just like when normal Emacs completions are ambiguous.
+
+Word-delimiters for the purposes of Partial Completion are \"-\", \"_\",
+\".\", and SPC."
+  (interactive)
+  (if (PC-was-meta-key)
+      (minibuffer-complete)
+    (PC-do-completion nil)))
+
+
+(defun PC-complete-word ()
+  "Like `minibuffer-complete-word', but allows \"b--di\"-style abbreviations.
+See `PC-complete' for details.
+This can be bound to other keys, like `-' and `.', if you wish."
+  (interactive)
+  (if (eq (PC-was-meta-key) PC-meta-flag)
+      (if (eq last-command-char ? )
+          (minibuffer-complete-word)
+        (self-insert-command 1))
+    (self-insert-command 1)
+    (if (eobp)
+        (PC-do-completion 'word))))
+
+
+(defun PC-complete-space ()
+  "Like `minibuffer-complete-word', but allows \"b--di\"-style abbreviations.
+See `PC-complete' for details.
+This is suitable for binding to other keys which should act just like SPC."
+  (interactive)
+  (if (eq (PC-was-meta-key) PC-meta-flag)
+      (minibuffer-complete-word)
+    (insert " ")
+    (if (eobp)
+        (PC-do-completion 'word))))
+
+
+(defun PC-complete-and-exit ()
+  "Like `minibuffer-complete-and-exit', but allows \"b--di\"-style abbreviations.
+See `PC-complete' for details."
+  (interactive)
+  (if (eq (PC-was-meta-key) PC-meta-flag)
+      (minibuffer-complete-and-exit)
+    (PC-do-complete-and-exit)))
+
+(defun PC-force-complete-and-exit ()
+  "Like `minibuffer-complete-and-exit', but allows \"b--di\"-style abbreviations.
+See `PC-complete' for details."
+  (interactive)
+  (let ((minibuffer-completion-confirm nil))
+    (PC-do-complete-and-exit)))
+
+(defun PC-do-complete-and-exit ()
+  (if (= (buffer-size) 0)  ; Duplicate the "bug" that Info-menu relies on...
+      (exit-minibuffer)
+    (let ((flag (PC-do-completion 'exit)))
+      (and flag
+           (if (or (eq flag 'complete)
+                   (not minibuffer-completion-confirm))
+               (exit-minibuffer)
+             (PC-temp-minibuffer-message " (Confirm)"))))))
+
+
+(defun PC-completion-help ()
+  "Like `minibuffer-completion-help', but allows \"b--di\"-style abbreviations.
+See `PC-complete' for details."
+  (interactive)
+  (if (eq (PC-was-meta-key) PC-meta-flag)
+      (minibuffer-completion-help)
+    (PC-do-completion 'help)))
+
+(defun PC-was-meta-key ()
+  (or (/= (length (this-command-keys)) 1)
+      (let ((key (aref (this-command-keys) 0)))
+        (if (integerp key)
+            (>= key 128)
+          (not (null (memq 'meta (event-modifiers key))))))))
+
+
+(defvar PC-ignored-extensions 'empty-cache)
+(defvar PC-delims 'empty-cache)
+(defvar PC-ignored-regexp nil)
+(defvar PC-word-failed-flag nil)
+(defvar PC-delim-regex nil)
+(defvar PC-ndelims-regex nil)
+(defvar PC-delims-list nil)
+
+(defun PC-do-completion (&optional mode beg end)
+  (or beg (setq beg (point-min)))
+  (or end (setq end (point-max)))
+  (let* ((table minibuffer-completion-table)
+         (pred minibuffer-completion-predicate)
+         (filename (memq table '(read-file-name-internal
+                                 read-directory-name-internal)))
+         (dirname nil)
+         (str (buffer-substring beg end))
+         (incname (and filename (string-match "<\\([^\"<>]*\\)>?$" str)))
+         (ambig nil)
+         basestr
+         regex
+         p offset
+         (poss nil)
+         helpposs
+         (case-fold-search completion-ignore-case))
+
+    ;; Check if buffer contents can already be considered complete
+    (if (and (eq mode 'exit)
+             (PC-is-complete-p str table pred))
+        'complete
+
+      ;; Do substitutions in directory names
+      (and filename
+           (not (equal str (setq p (substitute-in-file-name str))))
+           (progn
+             (delete-region beg end)
+             (insert p)
+             (setq str p end (+ beg (length str)))))
+
+      ;; Prepare various delimiter strings
+      (or (equal PC-word-delimiters PC-delims)
+          (setq PC-delims PC-word-delimiters
+                PC-delim-regex (concat "[" PC-delims "]")
+                PC-ndelims-regex (concat "[^" PC-delims "]*")
+                PC-delims-list (append PC-delims nil)))
+
+      ;; Look for wildcard expansions in directory name
+      (and filename
+           (string-match "\\*.*/" str)
+           (let ((pat str)
+                 files)
+             (setq p (1+ (string-match "/[^/]*\\'" pat)))
+             (while (setq p (string-match PC-delim-regex pat p))
+               (setq pat (concat (substring pat 0 p)
+                                 "*"
+                                 (substring pat p))
+                     p (+ p 2)))
+             (setq files (PC-expand-many-files (concat pat "*")))
+             (if files
+                 (let ((dir (file-name-directory (car files)))
+                       (p files))
+                   (while (and (setq p (cdr p))
+                               (equal dir (file-name-directory (car p)))))
+                   (if p
+                       (setq filename nil table nil pred nil
+                             ambig t)
+                     (delete-region beg end)
+                     (setq str (concat dir (file-name-nondirectory str)))
+                     (insert str)
+                     (setq end (+ beg (length str)))))
+               (setq filename nil table nil pred nil))))
+
+      ;; Strip directory name if appropriate
+      (if filename
+          (if incname
+              (setq basestr (substring str incname)
+                    dirname (substring str 0 incname))
+            (setq basestr (file-name-nondirectory str)
+                  dirname (file-name-directory str)))
+        (setq basestr str))
+
+      ;; Convert search pattern to a standard regular expression
+      (setq regex (regexp-quote basestr)
+            offset (if (and (> (length regex) 0)
+                            (not (eq (aref basestr 0) ?\*))
+                            (or (eq PC-first-char t)
+                                (and PC-first-char filename))) 1 0)
+            p offset)
+      (while (setq p (string-match PC-delim-regex regex p))
+        (if (eq (aref regex p) ? )
+            (setq regex (concat (substring regex 0 p)
+                                PC-ndelims-regex
+                                PC-delim-regex
+                                (substring regex (1+ p)))
+                  p (+ p (length PC-ndelims-regex) (length PC-delim-regex)))
+          (let ((bump (if (memq (aref regex p)
+                                '(?$ ?^ ?\. ?* ?+ ?? ?[ ?] ?\\))
+                          -1 0)))
+            (setq regex (concat (substring regex 0 (+ p bump))
+                                PC-ndelims-regex
+                                (substring regex (+ p bump)))
+                  p (+ p (length PC-ndelims-regex) 1)))))
+      (setq p 0)
+      (if filename
+          (while (setq p (string-match "\\\\\\*" regex p))
+            (setq regex (concat (substring regex 0 p)
+                                "[^/]*"
+                                (substring regex (+ p 2))))))
+      ;;(setq the-regex regex)
+      (setq regex (concat "\\`" regex))
+
+      ;; Find an initial list of possible completions
+      (if (not (setq p (string-match (concat PC-delim-regex
+                                             (if filename "\\|\\*" ""))
+                                     str
+                                     (+ (length dirname) offset))))
+
+          ;; Minibuffer contains no hyphens -- simple case!
+          (setq poss (all-completions str
+                                      table
+                                      pred))
+
+        ;; Use all-completions to do an initial cull.  This is a big win,
+        ;; since all-completions is written in C!
+        (let ((compl (all-completions (substring str 0 p)
+                                      table
+                                      pred)))
+          (setq p compl)
+          (while p
+            (and (string-match regex (car p))
+                 (setq poss (cons (car p) poss)))
+            (setq p (cdr p)))))
+
+      ;; Now we have a list of possible completions
+      (cond
+
+       ;; No valid completions found
+       ((null poss)
+        (if (and (eq mode 'word)
+                 (not PC-word-failed-flag))
+            (let ((PC-word-failed-flag t))
+              (delete-backward-char 1)
+              (PC-do-completion 'word))
+          (beep)
+          (PC-temp-minibuffer-message (if ambig
+                                          " (Ambiguous dir name)"
+                                        (if (eq mode 'help)
+                                            " (No completions)"
+                                          " (No match)")))
+          nil))
+
+       ;; More than one valid completion found
+       ((or (cdr (setq helpposs poss))
+            (memq mode '(help word)))
+
+        ;; Handle completion-ignored-extensions
+        (and filename
+             (not (eq mode 'help))
+             (let ((p2 poss))
+
+               ;; Build a regular expression representing the extensions list
+               (or (equal completion-ignored-extensions PC-ignored-extensions)
+                   (setq PC-ignored-regexp
+                         (concat "\\("
+                                 (mapconcat
+                                  'regexp-quote
+                                  (setq PC-ignored-extensions
+                                        completion-ignored-extensions)
+                                  "\\|")
+                                 "\\)\\'")))
+
+               ;; Check if there are any without an ignored extension
+               (setq p nil)
+               (while p2
+                 (or (string-match PC-ignored-regexp (car p2))
+                     (setq p (cons (car p2) p)))
+                 (setq p2 (cdr p2)))
+
+               ;; If there are "good" names, use them
+               (and p (setq poss p))))
+
+        ;; Is the actual string one of the possible completions?
+        (setq p (and (not (eq mode 'help)) poss))
+        (while (and p
+                    (not (equal (car p) basestr)))
+          (setq p (cdr p)))
+        (if p
+
+            (progn
+              (if (null mode)
+                  (PC-temp-minibuffer-message " (Complete, but not unique)"))
+              t)
+
+          ;; If ambiguous, try for a partial completion
+          (let ((improved nil)
+                prefix
+                (pt nil)
+                (skip "\\`"))
+
+            ;; Check if next few letters are the same in all cases
+            (if (and (not (eq mode 'help))
+                     (setq prefix (try-completion "" (mapcar 'list poss))))
+                (let ((first t) i)
+                  (if (eq mode 'word)
+                      (setq prefix (PC-chop-word prefix basestr)))
+                  (goto-char (+ beg (length dirname)))
+                  (while (and (progn
+                                (setq i 0)
+                                (while (< i (length prefix))
+                                  (if (and (< (point) end)
+                                           (eq (aref prefix i)
+                                               (following-char)))
+                                      (forward-char 1)
+                                    (if (and (< (point) end)
+                                             (or (and (looking-at " ")
+                                                      (memq (aref prefix i)
+                                                            PC-delims-list))
+                                                 (eq (downcase (aref prefix i))
+                                                     (downcase
+                                                      (following-char)))))
+                                        (progn
+                                          (delete-char 1)
+                                          (setq end (1- end)))
+                                      (and filename (looking-at "\\*")
+                                           (progn
+                                             (delete-char 1)
+                                             (setq end (1- end))))
+                                      (setq improved t))
+                                    (insert (substring prefix i (1+ i)))
+                                    (setq end (1+ end)))
+                                  (setq i (1+ i)))
+                                (or pt (equal (point) beg)
+                                    (setq pt (point)))
+                                (looking-at PC-delim-regex))
+                              (setq skip (concat skip
+                                                 (regexp-quote prefix)
+                                                 PC-ndelims-regex)
+                                    prefix (try-completion
+                                            ""
+                                            (mapcar
+                                             (function
+                                              (lambda (x)
+                                                (list
+                                                 (and (string-match skip x)
+                                                      (substring
+                                                       x
+                                                       (match-end 0))))))
+                                             poss)))
+                              (or (> i 0) (> (length prefix) 0))
+                              (or (not (eq mode 'word))
+                                  (and first (> (length prefix) 0)
+                                       (setq first nil
+                                             prefix (substring prefix 0 1))))))
+                  (goto-char (if (eq mode 'word) end
+                               (or pt beg)))))
+
+            (if (and (eq mode 'word)
+                     (not PC-word-failed-flag))
+
+                (if improved
+
+                    ;; We changed it... would it be complete without the space?
+                    (if (PC-is-complete-p (buffer-substring 1 (1- end))
+                                          table pred)
+                        (delete-region (1- end) end)))
+
+              (if improved
+
+                  ;; We changed it... enough to be complete?
+                  (and (eq mode 'exit)
+                       (PC-is-complete-p (buffer-string) table pred))
+
+                ;; If totally ambiguous, display a list of completions
+                (if (or completion-auto-help
+                        (eq mode 'help))
+                    (with-output-to-temp-buffer " *Completions*"
+                      (display-completion-list (sort helpposs 'string-lessp)))
+                  (PC-temp-minibuffer-message " (Next char not unique)"))
+                nil)))))
+
+       ;; Only one possible completion
+       (t
+        (if (equal basestr (car poss))
+            (if (null mode)
+                (PC-temp-minibuffer-message " (Sole completion)"))
+          (delete-region beg end)
+          (insert (if filename
+                      (substitute-in-file-name (concat dirname (car poss)))
+                    (car poss))))
+        t)))))
+
+
+(defun PC-is-complete-p (str table pred)
+  (let ((res (if (listp table)
+                 (assoc str table)
+               (if (vectorp table)
+                   (or (equal str "nil")   ; heh, heh, heh
+                       (intern-soft str table))
+                 (funcall table str pred 'lambda)))))
+    (and res
+         (or (not pred)
+             (and (not (listp table)) (not (vectorp table)))
+             (funcall pred res))
+         res)))
+
+(defun PC-chop-word (new old)
+  (let ((i -1)
+        (j -1))
+    (while (and (setq i (string-match PC-delim-regex old (1+ i)))
+                (setq j (string-match PC-delim-regex new (1+ j)))))
+    (if (and j
+             (or (not PC-word-failed-flag)
+                 (setq j (string-match PC-delim-regex new (1+ j)))))
+        (substring new 0 (1+ j))
+      new)))
+
+(defvar PC-not-minibuffer nil)
+
+(defun PC-temp-minibuffer-message (m)
+  "A Lisp version of `temp_minibuffer_message' from minibuf.c."
+  (if PC-not-minibuffer
+      (progn
+        (message m)
+        (sit-for 2)
+        (message ""))
+    (if (fboundp 'temp-minibuffer-message)
+        (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-char 7)))))))
+
+
+(defun PC-lisp-complete-symbol ()
+  "Perform completion on Lisp symbol preceding point.
+That symbol is compared against the symbols that exist
+and any additional characters determined by what is there
+are inserted.
+If the symbol starts just after an open-parenthesis,
+only symbols with function definitions are considered.
+Otherwise, all symbols with function definitions, values
+or properties are considered."
+  (interactive)
+  (let* ((end (point))
+         (buffer-syntax (syntax-table))
+         (beg (unwind-protect
+                  (save-excursion
+                    (if lisp-mode-syntax-table
+                        (set-syntax-table lisp-mode-syntax-table))
+                    (backward-sexp 1)
+                    (while (= (char-syntax (following-char)) ?\')
+                      (forward-char 1))
+                    (point))
+                (set-syntax-table buffer-syntax)))
+         (minibuffer-completion-table obarray)
+         (minibuffer-completion-predicate
+          (if (eq (char-after (1- beg)) ?\()
+              'fboundp
+            (function (lambda (sym)
+                        (or (boundp sym) (fboundp sym)
+                            (symbol-plist sym))))))
+         (PC-not-minibuffer t))
+    (PC-do-completion nil beg end)))
+
+
+;;; Wildcards in `C-x C-f' command.  This is independent from the main
+;;; completion code, except for `PC-expand-many-files' which is called
+;;; when "*"'s are found in the path during filename completion.  (The
+;;; above completion code always understands "*"'s, except in file paths,
+;;; without relying on the following code.)
+
+(defvar PC-many-files-list nil)
+
+(defun PC-try-load-many-files ()
+  (if (string-match "\\*" buffer-file-name)
+      (let* ((pat buffer-file-name)
+             (files (PC-expand-many-files pat))
+             (first (car files))
+             (next files))
+        (kill-buffer (current-buffer))
+        (or files
+            (error "No matching files"))
+        (save-window-excursion
+          (while (setq next (cdr next))
+            (let ((buf (find-file-noselect (car next))))
+              (switch-to-buffer buf))))
+        ;; This modifies the "buf" variable inside find-file-noselect.
+        (setq buf (get-file-buffer first))
+        (if buf
+            nil   ; should do verify-visited-file-modtime stuff.
+          (setq filename first)
+          (setq buf (create-file-buffer filename))
+          (set-buffer buf)
+          (erase-buffer)
+          (insert-file-contents filename t))
+        (if (cdr files)
+            (setq PC-many-files-list (mapconcat
+                                      (if (string-match "\\*.*/" pat)
+                                          'identity
+                                        'file-name-nondirectory)
+                                      (cdr files) ", ")
+                  find-file-hooks (cons 'PC-after-load-many-files
+                                        find-file-hooks)))
+        ;; This modifies the "error" variable inside find-file-noselect.
+        (setq error nil)
+        t)
+    nil))
+
+(defun PC-after-load-many-files ()
+  (setq find-file-hooks (delq 'PC-after-load-many-files find-file-hooks))
+  (message "Also loaded %s." PC-many-files-list))
+
+(defun PC-expand-many-files (name)
+  (save-excursion
+    (set-buffer (generate-new-buffer " *Glob Output*"))
+    (erase-buffer)
+    (shell-command (concat "echo " name) t)
+    (goto-char (point-min))
+    (if (looking-at ".*No match")
+        nil
+      (insert "(\"")
+      (while (search-forward " " nil t)
+        (delete-backward-char 1)
+        (insert "\" \""))
+      (goto-char (point-max))
+      (delete-backward-char 1)
+      (insert "\")")
+      (goto-char (point-min))
+      (let ((files (read (current-buffer))))
+        (kill-buffer (current-buffer))
+        files))))
+
+(or PC-disable-wildcards
+    (memq 'PC-try-load-many-files find-file-not-found-hooks)
+    (setq find-file-not-found-hooks (cons 'PC-try-load-many-files
+                                          find-file-not-found-hooks)))
+
+
+
+;;; Facilities for loading C header files.  This is independent from the
+;;; main completion code.  See also the variable `PC-include-file-path'
+;;; at top of this file.
+
+(defun PC-look-for-include-file ()
+  (if (string-match "[\"<]\\([^\"<>]*\\)[\">]?$" (buffer-file-name))
+      (let ((name (substring (buffer-file-name)
+                             (match-beginning 1) (match-end 1)))
+            (punc (aref (buffer-file-name) (match-beginning 0)))
+            (path nil)
+            new-buf)
+        (kill-buffer (current-buffer))
+        (if (equal name "")
+            (save-excursion
+              (set-buffer (car (buffer-list)))
+              (save-excursion
+                (beginning-of-line)
+                (if (looking-at
+                     "[ \t]*#[ \t]*include[ \t]+[<\"]\\(.+\\)[>\"][ \t]*[\n/]")
+                    (setq name (buffer-substring (match-beginning 1)
+                                                 (match-end 1))
+                          punc (char-after (1- (match-beginning 1))))
+                  ;; Suggested by Frank Siebenlist:
+                  (if (or (looking-at
+                           "[ \t]*([ \t]*load[ \t]+\"\\([^\"]+\\)\"")
+                          (looking-at
+                           "[ \t]*([ \t]*load-library[ \t]+\"\\([^\"]+\\)\"")
+                          (looking-at
+                           "[ \t]*([ \t]*require[ \t]+'\\([^\t )]+\\)[\t )]"))
+                      (progn
+                        (setq name (buffer-substring (match-beginning 1)
+                                                     (match-end 1))
+                              punc ?\<
+                              path load-path)
+                        (if (string-match "\\.elc$" name)
+                            (setq name (substring name 0 -1))
+                          (or (string-match "\\.el$" name)
+                              (setq name (concat name ".el")))))
+                    (error "Not on an #include line"))))))
+        (or (string-match "\\.[a-zA-Z0-9]+$" name)
+            (setq name (concat name ".h")))
+        (if (eq punc ?\<)
+            (let ((path (or path (PC-include-file-path))))
+              (while (and path
+                          (not (file-exists-p
+                                (concat (file-name-as-directory (car path))
+                                        name))))
+                (setq path (cdr path)))
+              (if path
+                  (setq name (concat (file-name-as-directory (car path)) name))
+                (error "No such include file: <%s>" name)))
+          (let ((dir (save-excursion
+                       (set-buffer (car (buffer-list)))
+                       default-directory)))
+            (if (file-exists-p (concat dir name))
+                (setq name (concat dir name))
+              (error "No such include file: \"%s\"" name))))
+        (setq new-buf (get-file-buffer name))
+        (if new-buf
+            ;; no need to verify last-modified time for this!
+            (set-buffer new-buf)
+          (setq new-buf (create-file-buffer name))
+          (set-buffer new-buf)
+          (erase-buffer)
+          (insert-file-contents name t))
+        (setq filename name
+              error nil
+              buf new-buf)
+        t)
+    nil))
+
+(defun PC-include-file-path ()
+  (or PC-include-file-path
+      (let ((env (getenv "INCPATH"))
+            (path nil)
+            pos)
+        (or env (error "No include file path specified"))
+        (while (setq pos (string-match ":[^:]+$" env))
+          (setq path (cons (substring env (1+ pos)) path)
+                env (substring env 0 pos)))
+        path)))
+
+;;; This is adapted from lib-complete.el, by Mike Williams.
+(defun PC-include-file-all-completions (file search-path &optional full)
+  "Return all completions for FILE in any directory on SEARCH-PATH.
+If optional third argument FULL is non-nil, returned pathnames should be 
+absolute rather than relative to some directory on the SEARCH-PATH."
+  (setq search-path
+        (mapcar '(lambda (dir)
+                   (if dir (file-name-as-directory dir) default-directory))
+                search-path))
+  (if (file-name-absolute-p file)
+      ;; It's an absolute file name, so don't need search-path
+      (progn
+        (setq file (expand-file-name file))
+        (file-name-all-completions 
+         (file-name-nondirectory file) (file-name-directory file)))
+    (let ((subdir (file-name-directory file))
+          (ndfile (file-name-nondirectory file))
+          file-lists)
+      ;; Append subdirectory part to each element of search-path
+      (if subdir
+          (setq search-path
+                (mapcar '(lambda (dir) (concat dir subdir))
+                        search-path)
+                file ))
+      ;; Make list of completions in each directory on search-path
+      (while search-path
+        (let* ((dir (car search-path))
+               (subdir (if full dir subdir)))
+          (if (file-directory-p dir)
+              (progn
+                (setq file-lists
+                      (cons 
+                       (mapcar '(lambda (file) (concat subdir file))
+                               (file-name-all-completions ndfile 
+                                                          (car search-path)))
+                       file-lists))))
+          (setq search-path (cdr search-path))))
+      ;; Compress out duplicates while building complete list (slloooow!)
+      (let ((sorted (sort (apply 'nconc file-lists)
+                          '(lambda (x y) (not (string-lessp x y)))))
+            compressed)
+        (while sorted
+          (if (equal (car sorted) (car compressed)) nil
+            (setq compressed (cons (car sorted) compressed)))
+          (setq sorted (cdr sorted)))
+        compressed))))
+
+(defvar PC-old-read-file-name-internal nil)
+
+(defun PC-read-include-file-name-internal (string dir action)
+  (if (string-match "<\\([^\"<>]*\\)>?$" string)
+      (let* ((name (substring string (match-beginning 1) (match-end 1)))
+             (str2 (substring string (match-beginning 0)))
+             (completion-table
+              (mapcar (function (lambda (x) (list (format "<%s>" x))))
+                      (PC-include-file-all-completions
+                       name (PC-include-file-path)))))
+        (cond
+         ((not completion-table) nil)
+         ((eq action nil) (try-completion str2 completion-table nil))
+         ((eq action t) (all-completions str2 completion-table nil))
+         ((eq action 'lambda)
+          (eq (try-completion str2 completion-table nil) t))))
+    (funcall PC-old-read-file-name-internal string dir action)))
+
+(or PC-disable-includes
+    (memq 'PC-look-for-include-file find-file-not-found-hooks)
+    (setq find-file-not-found-hooks (cons 'PC-look-for-include-file
+                                          find-file-not-found-hooks)))
+
+(or PC-disable-includes
+    PC-old-read-file-name-internal
+    (progn
+      (setq PC-old-read-file-name-internal
+            (symbol-function 'read-file-name-internal))
+      (fset 'read-file-name-internal 'PC-read-include-file-name-internal)))
+
+
+(provide 'complete)
+
+;;; End.