# ilisp / completer.el

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Version 3.04. ;; Copyright (C) 1990, 1991, 1992 Chris McConnell ;; Copyright (C) 2000 Ben Wing. ;; Author: Chris Mcconnell ;; Latest XEmacs Author: Ben Wing ;; Maintainer: Ben Wing ;; Keywords: minibuffer, completion ;;; Thanks to Bjorn Victor for suggestions, testing, and patches for ;;; file completion. ;;; This file is part of XEmacs. ;;; XEmacs 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 ;;; XEmacs, 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 XEmacs 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. ;;; When loaded, this file extends the standard completion mechanisms ;;; so that they perform pattern matching completions. There is also ;;; an interface that allows it to be used by other programs. The ;;; completion rules are: ;;; ;;; 1) If what has been typed matches any possibility, do normal ;;; completion. ;;; ;;; 2) Otherwise, generate a regular expression such that ;;; completer-words delimit words and generate all possible matches. ;;; The variable completer-any-delimiter can be set to a character ;;; that matches any delimiter. If it were " ", then "by d" would be ;;; byte-recompile-directory. If completer-use-words is T, a match is ;;; unique if it is the only one with the same number of words. If ;;; completer-use-words is NIL, a match is unique if it is the only ;;; possibility. If you ask the completer to use its best guess, it ;;; will be the shortest match of the possibilities unless ;;; completer-exact is T. ;;; ;;; 3) For filenames, if completer-complete-filenames is T, each ;;; pathname component will be individually completed, otherwise only ;;; the final component will be completed. If you are using a ;;; distributed file system like afs, you may want to set up a ;;; symbolic link in your home directory or add pathname components to ;;; completer-file-skip so that the pathname components that go across ;;; machines do not get expanded. ;;; ;;; SPACE, TAB, LFD, RET, and ? do normal completion if possible ;;; otherwise they do partial completion. In addition, C-DEL will ;;; undo the last partial expansion or contraction. M-RET will always ;;; complete to the current match before returning. This is useful ;;; when any string is possible, but you want to complete to a string ;;; as when calling find-file. The bindings can be changed by using ;;; completer-load-hook. ;;; ;;; Modes that use comint-dynamic-complete (like cmushell and ilisp) ;;; will also do partial completion as will M-tab in Emacs LISP. ;;; ;;; Examples: ;;; a-f auto-fill-mode ;;; b--d *beginning-of-defun or byte-recompile-directory ;;; by d *byte-recompile-directory if completer-any-delimiter is " " ;;; ~/i.e *~/ilisp.el or ~/il-el.el or ~/ilisp.elc ;;; /u/mi/ /usr/misc/ ;;; (require 'cl) ;;;%Globals ;;;%%Switches (defvar completer-load-hook nil "Hook called when minibuffer partial completion is loaded.") (defvar completer-disable nil "*If T, turn off partial completion. Use the command \$completer-toggle] to set this.") (defvar completer-complete-filenames t "*If T, then each component of a filename will be completed, otherwise just the final component will be completed.") (defvar completer-use-words nil ; jwz: this is HATEFUL! "*If T, then prefer completions with the same number of words as the pattern.") (defvar completer-words "---. <" "*Delimiters used in partial completions. It should be a set of characters suitable for inclusion in a [] regular expression.") (defvar completer-any-delimiter nil "*If a character, then a delimiter in the pattern that matches the character will match any delimiter in completer-words.") (defvar completer-file-skip "^cs/\\|@sys\\|.edu/\\|.gov/\\|.com/\\|:/" "*Regular expression for pathname components to not complete.") (defvar completer-exact nil "*If T, then you must have an exact match. Otherwise, the shortest string that matches the pattern will be used.") (defvar completer-cache-size 100 "*Size of cache to use for partially completed pathnames.") (defvar completer-use-cache t "*Set to nil to disable the partially completed pathname cache.") ;;;%%Internal (defvar completer-last-pattern "" "The last pattern expanded.") (defvar completer-message nil "T if temporary message was just displayed.") (defvar completer-path-cache nil "Cache of (path . choices) for completer.") (defvar completer-path-separator-string (if (eq system-type 'windows-nt) "\\" "/")) (defvar completer-path-separator-regexp (if (eq system-type 'windows-nt) "[/\$" "/")) (defvar completer-path-delimiter-list (if (eq system-type 'windows-nt) '(?\\ ?/) '(?/))) (defvar completer-path-separator-regexp-inside-brackets (if (eq system-type 'windows-nt) "/\\" "/")) (defvar completer-dot-dot-list (if (eq system-type 'windows-nt) '("../" "..\\") '("../"))) (defvar completer-string nil "Last completer string.") (defvar completer-table nil "Last completer table.") (defvar completer-pred nil "Last completer pred.") (defvar completer-mode nil "Last completer mode.") (defvar completer-result nil "Last completer result.") (eval-when (eval load compile) (if (not (fboundp 'completion-display-completion-list-function)) (setf completion-display-completion-list-function 'display-completion-list))) ;;;%Utilities (defun completer-message (message &optional point) "Display MESSAGE at optional POINT for two seconds." (setq point (or point (point-max)) completer-message t) (let ((end (save-excursion (goto-char point) (insert message) (point))) (inhibit-quit t)) (sit-for 2) (delete-region point end) (if (and quit-flag ;;(not (eq 'lucid-19 ilisp-emacs-version-id)) (not (string-match "XEmacs" emacs-version)) ) (setq quit-flag nil unread-command-char 7)))) ;;; (defun completer-deleter (regexp choices &optional keep) "Destructively remove strings that match REGEXP in CHOICES and return the modified list. If optional KEEP, then keep entries that match regexp." (let* ((choiceb choices) choicep) (if keep (progn (while (and choiceb (not (string-match regexp (car choiceb)))) (setq choiceb (cdr choiceb))) (setq choicep choiceb) (while (cdr choicep) (if (string-match regexp (car (cdr choicep))) (setq choicep (cdr choicep)) (rplacd choicep (cdr (cdr choicep)))))) (while (and choiceb (string-match regexp (car choiceb))) (setq choiceb (cdr choiceb))) (setq choicep choiceb) (while (cdr choicep) (if (string-match regexp (car (cdr choicep))) (rplacd choicep (cdr (cdr choicep))) (setq choicep (cdr choicep))))) choiceb)) ;;;%%Regexp (defun completer-regexp (string delimiters any) "Convert STRING into a regexp with words delimited by characters in DELIMITERS. Any delimiter in STRING that is the same as ANY will match any delimiter." (let* ((delimiter-reg (concat "[" delimiters "]")) (limit (length string)) (pos 0) (regexp "^")) (while (and (< pos limit) (string-match delimiter-reg string pos)) (let* ((begin (match-beginning 0)) (end (match-end 0)) (delimiter (substring string begin end)) (anyp (eq (elt string begin) any))) (setq regexp (format "%s%s[^%s]*%s" regexp (regexp-quote (substring string pos begin)) (if anyp delimiters delimiter) (if anyp delimiter-reg (regexp-quote delimiter))) pos end))) (if (<= pos limit) (setq regexp (concat regexp (regexp-quote (substring string pos limit))))))) ;;; (defun completer-words (regexp string &optional limit) "Return the number of words matching REGEXP in STRING up to LIMIT." (setq limit (or limit 1000)) (let ((count 1) (pos 0)) (while (and (string-match regexp string pos) (<= count limit)) (setq count (1+ count) pos (match-end 0))) count)) ;;;%Matcher (defun completer-matches (string choices delimiters any) "Return STRING's matches in CHOICES using DELIMITERS and wildcard ANY to segment the strings." (let* ((regexp (concat "[" delimiters "]")) (from nil) (to 0) (pattern nil) (len (length string)) (matches nil) sub sublen choice word wordlen pat) ;; Segment pattern (while (< (or from 0) len) (setq to (or (string-match regexp string (if from (1+ from))) len)) (if (eq (elt string (or from 0)) completer-any-delimiter) (setq sub (substring string (if from (1+ from) 0) to) sublen (- (length sub))) (setq sub (substring string (or from 0) to) sublen (length sub))) (setq pattern (cons (cons sub sublen) pattern) from to)) (setq pattern (reverse pattern)) ;; Find choices that match patterns (setq regexp (concat "[" delimiters "]")) (while choices (setq choice (car choices) word pattern from 0) (while (and word from (let* (begin end) (if (< (setq wordlen (cdr (setq pat (car word)))) 0) (setq begin (1+ from) end (+ begin (- wordlen))) (setq begin from end (+ begin wordlen))) (and (<= end (length choice)) (or (zerop wordlen) (string-equal (car pat) (substring choice begin end)))))) (setq from (string-match regexp choice (if (and (zerop from) (zerop wordlen)) from (1+ from))) word (cdr word))) (if (not word) (setq matches (cons choice matches))) (setq choices (cdr choices))) matches)) ;;; (defun completer-choice (string choices delimiters use-words) "Return the best match of STRING in CHOICES with DELIMITERS between words and T if it is unique. A match is unique if it is the only possibility or when USE-WORDS the only possibility with the same number of words. The shortest string of multiple possibilities will be the best match." (or (if (null (cdr choices)) (cons (car choices) t)) (let* ((regexp (concat "[^" delimiters "]*[" delimiters "]")) (words (if use-words (completer-words regexp string))) (choice choices) (unique-p nil) (match nil) (match-count nil) (match-len 1000)) (while choice (let* ((current (car choice)) (length (length current))) (if match-count (if (= (completer-words regexp current words) words) (progn (setq unique-p nil) (if (< length match-len) (setq match current match-len length)))) (if (and use-words (= (completer-words regexp current words) words)) (setq match current match-len length match-count t unique-p t) (if (< length match-len) (setq match current match-len length))))) (setq choice (cdr choice))) (cons match unique-p)))) ;;;%Completer ;;;%%Utilities (defun completer-region (delimiters) "Return the completion region bounded by characters in DELIMITERS for the current buffer assuming that point is in it." (cons (save-excursion (skip-chars-backward delimiters) (point)) (save-excursion (skip-chars-forward delimiters) (point)))) ;;; (defun completer-last-component (string) "Return the start of the last filename component in STRING." (let ((last (1- (length string)) ) (match 0) (end 0)) (while (and (setq match (string-match completer-path-separator-regexp string end)) (< match last)) (setq end (1+ match))) end)) ;;; (defun completer-match-record (string matches delimiters any dir mode) "Return (match lcs choices unique) for STRING in MATCHES with DELIMITERS or ANY wildcards and DIR if a filename when in MODE." (let ((pattern (if dir (substring string (completer-last-component string)) string)) match) (setq matches (completer-matches pattern matches delimiters any) match (try-completion pattern (mapcar 'list matches))) ;; If try-completion produced an exact match for an element in 'matches', ;; then remove any partial matches from 'matches' and set the unique ;; match flag. (and (stringp match) (member match matches) (setq matches (list match))) (if (cdr matches) (let ((lcs (concat dir (try-completion "" (mapcar 'list matches))))) (setq match (if (not completer-exact) (completer-choice pattern matches delimiters completer-use-words))) (list (if match (concat dir (car match))) lcs matches (cdr match))) (if matches (progn (setq match (concat dir (car matches))) (list match match matches t)) (list nil nil nil nil))))) ;;;%%Complete file (defun completer-extension-regexp (extensions) "Return a regexp that matches to a string that ends with any string from EXTENSIONS list." (concat "\$$" (mapconcat 'regexp-quote extensions "\\|") "\$$\\'")) ;;; (defun completer-flush () "Flush completer's pathname cache." (interactive) (setq completer-path-cache nil)) ;;; (defun completer-cache (path pred words any mode) "Check to see if PATH is in path cache with PRED, WORDS, ANY and MODE." (let* ((last nil) (ptr completer-path-cache) (size 0) (result nil)) (if completer-use-cache (while ptr (let ((current (car (car ptr)))) (if (string-equal current path) (progn (if last (progn (rplacd last (cdr ptr)) (rplacd ptr completer-path-cache) (setq completer-path-cache ptr))) (setq result (cdr (car ptr)) ptr nil)) (if (cdr ptr) (setq last ptr)) (setq size (1+ size) ptr (cdr ptr)))))) (or result (let* ((choices (completer path 'read-file-name-internal pred words any mode t))) (if (and (or (car (cdr (cdr (cdr choices)))) (string= path (car choices))) (memq (elt (car choices) (1- (length (car choices)))) completer-path-delimiter-list)) (progn (if (>= size completer-cache-size) (rplacd last nil)) (setq completer-path-cache (cons (cons path choices) completer-path-cache)))) choices)))) ;;; (defun completer-file (string pred words any mode) "Return (match common-substring matches unique-p) for STRING using read-file-name-internal for choices that pass PRED using WORDS to delimit words. Optional ANY is a delimiter that matches any of the delimiters in WORD. If optional MODE is nil or 'help then possible matches will always be returned." ;; canonicalize slashes under windows-nt for proper completion (if (eq system-type 'windows-nt) (setq string (replace-in-string string "/" "\\\\"))) (let* ((case-fold-search completion-ignore-case) (last (and (eq mode 'exit-ok) (completer-last-component string))) (position ;; find beginning of first directory component. (cond ;; CMU RFS filenames like /../computername/foo/bar.c ((string-match "^/\\.\\./[^/]*/" string) (match-end 0)) ;; windows-nt filenames like \\computername\foo\bar.c, or ;; cygwin filenames like //d/foo/bar.c ((and (memq system-type '(windows-nt cygwin32)) (string-match "[/\\][/\\][^/\\]*[/\\]" string)) (match-end 0)) ;; windows-nt filenames like c:\foo\bar.c or c:bar.c ((and (eq system-type 'windows-nt) (string-match "[A-Za-z]:[/\\]?" string)) (match-end 0)) (t ;; normal absolute or relative names, or names beginning ;; with ~/ (string-match (concat "[^~" completer-path-separator-regexp-inside-brackets "]") string)))) (new (substring string 0 position)) (user (if (string= new "~") (setq new (file-name-directory (expand-file-name new))))) (words (concat words completer-path-separator-regexp-inside-brackets)) (len (length string)) (choices nil) end (old-choices (list nil nil nil nil))) (while position (let* ((begin (string-match completer-path-separator-regexp string position)) (exact-p nil)) (setq end (if begin (match-end 0)) choices ;; Ends with a /, so check files in directory (if (and (memq mode '(nil help)) (= position len)) (completer-match-record "" ;; This assumes that .. and . come at the end (let* ((choices (all-completions new 'read-file-name-internal)) (choicep choices)) (if (member (car choicep) completer-dot-dot-list) (cdr (cdr choicep)) (while (cdr choicep) (if (member (car (cdr choicep)) completer-dot-dot-list) (rplacd choicep nil)) (setq choicep (cdr choicep))) choices)) words any new mode) (if (eq position last) (let ((new (concat new (substring string position)))) (list new new nil t)) (let ((component (substring string position end))) (if (and end (string-match completer-file-skip component)) ;; Assume component is complete (list (concat new component) (concat new component) nil t) (completer-cache (concat new component) pred words any mode)))))) ;; Keep going if unique or we match exactly (if (or (car (cdr (cdr (cdr choices)))) (setq exact-p (string= (concat new (substring string position end)) (car choices)))) (setq old-choices (let* ((lcs (car (cdr choices))) (matches (car (cdr (cdr choices)))) (slash (and lcs (string-match (concat completer-path-separator-regexp "$") lcs)))) (list nil (if slash (substring lcs 0 slash) lcs) (if (and (cdr matches) (or (eq mode 'help) (not exact-p))) matches) nil)) new (car choices) position end) ;; Its ok to not match user names because they may be in ;; different root directories (if (and (= position 1) (= (elt string 0) ?~)) (setq new (substring string 0 end) choices (list new new (list new) t) user nil position end) (setq position nil))))) (if (not (car choices)) (setq choices old-choices)) (if (and (car choices) (not (eq mode 'help)) (not (car (cdr (cdr (cdr choices)))))) ;; Try removing completion ignored extensions (let* ((extensions (completer-extension-regexp completion-ignored-extensions)) (choiceb (car (cdr (cdr choices)))) (choicep choiceb) (isext nil) (noext nil)) (while choicep (if (string-match extensions (car choicep)) (setq isext t) (setq noext t)) (if (and isext noext) ;; There are matches besides extensions (setq choiceb (completer-deleter extensions choiceb) choicep nil) (setq choicep (cdr choicep)))) (if (and isext noext) (setq choices (completer-match-record (if end (substring string end) "") choiceb words any (file-name-directory (car (cdr choices))) mode))))) (if user (let ((match (car choices)) (lcs (car (cdr choices))) (len (length user))) (setq choices (cons (if match (concat "~" (substring match len))) (cons (if lcs (concat "~" (substring lcs len))) (cdr (cdr choices))))))) choices)) ;;;%Exported program interface ;;;%%Completer (defun completer (string table pred words &optional any mode file-p) "Return (match common-substring matches unique-p) for STRING in TABLE for choices that pass PRED using WORDS to delimit words. If the flag completer-complete-filenames is T and the table is read-file-name-internal, then filename components will be individually expanded. Optional ANY is a delimiter that can match any delimiter in WORDS. Optional MODE is nil for complete, 'help for help and 'exit for exit." (if (and (stringp completer-string) (string= string completer-string) (eq table completer-table) (eq pred completer-pred) (not file-p) (or (eq mode completer-mode) (not (memq table '(read-file-name-internal read-directory-name-internal))))) completer-result (setq completer-string "" completer-table table completer-pred pred completer-mode mode completer-result (if (and completer-complete-filenames (not file-p) (eq table 'read-file-name-internal)) (completer-file string pred words any mode) (let* ((file-p (or file-p (eq table 'read-file-name-internal))) (case-fold-search completion-ignore-case) (pattern (concat "[" words "]")) (component (if file-p (completer-last-component string))) (dir (if component (substring string 0 component))) (string (if dir (substring string component) string)) (has-words (or (string-match pattern string) (length string)))) (if (and file-p (string-match "^\\$" string)) ;; Handle environment variables (let ((match (getenv (substring string 1 (string-match completer-path-separator-regexp string))))) (if match (setq match (concat match completer-path-separator-string))) (list match match (list match) match)) (let* ((choices (all-completions (concat dir (substring string 0 has-words)) table pred)) (regexp (completer-regexp string words any))) (if choices (completer-match-record string (completer-deleter regexp choices t) words any dir mode) (list nil nil nil nil)))))) completer-string string) completer-result)) ;;;%%Display choices (defun completer-display-choices (choices &optional match message end display) "Display the list of possible CHOICES with optional MATCH, MESSAGE, END and DISPLAY. If MATCH is non-nil, it will be flagged as the best guess. If there are no choices, display MESSAGE. END is where to put temporary messages. If DISPLAY is present then it will be called on each possible completion and should return a string." (if choices (with-output-to-temp-buffer "*Completions*" (if (cdr choices) (funcall completion-display-completion-list-function (sort (if display (let ((old choices) (new nil)) (while old (setq new (cons (funcall display (car old)) new) old (cdr old))) new) (copy-sequence choices)) (function (lambda (x y) (string-lessp (or (car-safe x) x) (or (car-safe y) y))))))) (if match (save-excursion (set-buffer "*Completions*") (goto-char (point-min)) (let ((buffer-read-only nil)) (insert "Guess = " match (if (cdr choices) ", " "") "\n"))))) (beep) (completer-message (or message " (No completions)") end))) ;;;%%Goto (defun completer-goto (match lcs choices unique delimiters words &optional mode display) "MATCH is the best match, LCS is the longest common substring of all of the matches. CHOICES is a list of the possibilities, UNIQUE indicates if MATCH is unique. DELIMITERS are possible bounding characters for the completion region. WORDS are the characters that delimit the words for partial matches. Replace the region bounded by delimiters with the match if unique and the lcs otherwise unless optional MODE is 'help. Then go to the part of the string that disambiguates choices using WORDS to separate words and display the possibilities if the string was not extended. If optional DISPLAY is present then it will be called on each possible completion and should return a string." (setq completer-message nil) (let* ((region (completer-region delimiters)) (start (car region)) (end (cdr region)) (string (buffer-substring start end)) (file-p (string-match (if (eq system-type 'windows-nt) "[^ ]*\$$~\\|/\\|\\\\\\|\\|\$$" "[^ ]*\$$~\\|/\\|\$$") string)) (no-insert (eq mode 'help)) (message t) (new (not (string= (buffer-substring start (point)) lcs)))) (if unique (if no-insert (progn (goto-char end) (completer-display-choices choices match nil end display)) (if (string= string match) (if (not file-p) (progn (goto-char end) (completer-message " (Sole completion)" end))) (completer-insert match delimiters))) ;;Not unique (if lcs (let* ((regexp (concat "[" words (if file-p completer-path-separator-regexp-inside-brackets) "]")) (words (completer-words regexp lcs)) point) ;; Go to where its ambiguous (goto-char start) (if (not no-insert) (progn (insert lcs) (setq completer-last-pattern (list string delimiters (current-buffer) start) start (point) end (+ end (length lcs))))) ;; Skip to the first delimiter in the original string ;; beyond the ambiguous point and keep from there on (if (re-search-forward regexp end 'move words) (progn (if (and (not no-insert) match) (let ((delimiter (progn (string-match (regexp-quote lcs) match) (substring match (match-end 0) (1+ (match-end 0)))))) (if (string-match regexp delimiter) (insert delimiter)))) (forward-char -1))) (if (not no-insert) (progn (setq end (- end (- (point) start))) (delete-region start (point)))))) (if choices (if (or no-insert (not new)) (completer-display-choices choices match nil end display)) (if file-p (progn (if (not (= (point) end)) (forward-char 1)) (if (not (save-excursion (re-search-forward completer-path-separator-regexp end t))) (goto-char end)))) (if message (progn (beep) (completer-message (if no-insert " (No completions)" " (No match)") end))))))) ;;;%Exported buffer interface ;;;%%Complete and go (defun completer-complete-goto (delimiters words table pred &optional no-insert display) "Complete the string bound by DELIMITERS using WORDS to bound words for partial matches in TABLE with PRED and then insert the longest common substring unless optional NO-INSERT and go to the point of ambiguity. If optional DISPLAY, it will be called on each match when possible completions are shown and should return a string." (let* ((region (completer-region delimiters))) (apply 'completer-goto (append (completer (buffer-substring (car region) (cdr region)) table pred words completer-any-delimiter no-insert) (list delimiters words no-insert display))))) ;;;%%Undo (defun completer-insert (match delimiters &optional buffer undo) "Replace the region bounded with characters in DELIMITERS by MATCH and save it so that it can be restored by completer-undo." (let* ((region (completer-region delimiters)) (start (car region)) (end (cdr region))) (if (and undo (or (not (= start undo)) (not (eq (current-buffer) buffer)))) (error "No previous pattern") (setq completer-last-pattern (list (buffer-substring start end) delimiters (current-buffer) start)) (delete-region start end) (goto-char start) (insert match)))) ;;; (defun completer-undo () "Swap the last expansion and the last match pattern." (interactive) (if completer-last-pattern (apply 'completer-insert completer-last-pattern) (error "No previous pattern"))) ;;;%Minibuffer specific code ;;;%%Utilities (defun completer-minibuf-string () "Remove dead filename specs from the minibuffer as delimited by // or ~ or $and return the resulting string." (save-excursion (goto-char (point-max)) (if (and (eq minibuffer-completion-table 'read-file-name-internal) (re-search-backward (if (memq system-type '(windows-nt cygwin32)) ; // is meaningful "/~\\|.\\$" "//\\|/~\\|.\\\$") nil t)) (delete-region (point-min) (1+ (point)))) (buffer-substring (point-min) (point-max)))) ;;; (defun completer-minibuf-exit () "Exit the minibuffer and clear completer-last-pattern." (interactive) (setq completer-last-pattern nil) (exit-minibuffer)) ;;; (defun completer-new-cmd (cmd) "Return T if we can't execute the old minibuffer version of CMD." (if (or completer-disable (let ((string (completer-minibuf-string))) (or (not (string-match (concat "[" completer-words completer-path-separator-regexp-inside-brackets "~]") string)) (condition-case () (let ((completion (try-completion string minibuffer-completion-table minibuffer-completion-predicate))) (if (eq minibuffer-completion-table 'read-file-name-internal) ;; Directories complete as themselves (and completion (or (not (string= string completion)) (file-exists-p completion))) completion)) (error nil))))) (progn (funcall cmd) nil) t)) ;;; (defun completer-minibuf (&optional mode) "Partial completion of minibuffer expressions. Optional MODE is 'help for help and 'exit for exit. If what has been typed so far matches any possibility normal completion will be done. Otherwise, the string is considered to be a pattern with words delimited by the characters in completer-words. If completer-exact is T, the best match will be the shortest one with the same number of words as the pattern if possible and otherwise the shortest matching expression. If called with a prefix, caching will be temporarily disabled. Examples: a-f auto-fill-mode r-e rmail-expunge b--d *beginning-of-defun or byte-recompile-directory by d *byte-recompile-directory if completer-any-delimiter is \" \" ~/i.e *~/ilisp.el or ~/il-el.el or ~/ilisp.elc /u/mi/ /usr/misc/" (interactive) (append (let ((completer-use-cache (not (or (not completer-use-cache) current-prefix-arg)))) (completer (completer-minibuf-string) minibuffer-completion-table minibuffer-completion-predicate completer-words completer-any-delimiter mode)) (list "^" completer-words mode))) ;;;%%Commands (defun completer-toggle () "Turn partial completion on or off." (interactive) (setq completer-disable (not completer-disable)) (message (if completer-disable "Partial completion OFF" "Partial completion ON"))) ;;; (defvar completer-old-help (lookup-key minibuffer-local-must-match-map "?") "Old binding of ? in minibuffer completion map.") (defun completer-help () "Partial completion minibuffer-completion-help. See completer-minibuf for more information." (interactive) (if (completer-new-cmd completer-old-help) (apply 'completer-goto (completer-minibuf 'help)))) ;;; (defvar completer-old-completer (lookup-key minibuffer-local-must-match-map "\t") "Old binding of TAB in minibuffer completion map.") (defun completer-complete () "Partial completion minibuffer-complete. See completer-minibuf for more information." (interactive) (if (completer-new-cmd completer-old-completer) (apply 'completer-goto (completer-minibuf)))) ;;; (defvar completer-old-word (lookup-key minibuffer-local-must-match-map " ") "Old binding of SPACE in minibuffer completion map.") (defun completer-word () "Partial completion minibuffer-complete. See completer-minibuf for more information." (interactive) (if (eq completer-any-delimiter ?\ ) (insert ?\ ) (if (completer-new-cmd completer-old-word) (apply 'completer-goto (completer-minibuf))))) ;;; (defvar completer-old-exit (lookup-key minibuffer-local-must-match-map "\n") "Old binding of RET in minibuffer completion map.") (defun completer-exit () "Partial completion minibuffer-complete-and-exit. See completer-minibuf for more information." (interactive) (if (completer-new-cmd completer-old-exit) (let* ((completions (completer-minibuf 'exit)) (match (car completions)) (unique-p (car (cdr (cdr (cdr completions)))))) (apply 'completer-goto completions) (if unique-p (completer-minibuf-exit) (if match (progn (completer-insert match "^") (if minibuffer-completion-confirm (completer-message " (Confirm)") (completer-minibuf-exit))) (if (not completer-message) (beep))))))) ;;; (defun completer-match-exit () "Exit the minibuffer with the current best match." (interactive) (let* ((completions (completer-minibuf 'exit)) (guess (car completions))) (if (not guess) ;; OK if last filename component doesn't match (setq completions (completer-minibuf 'exit-ok) guess (car completions))) (if guess (progn (goto-char (point-min)) (insert guess) (delete-region (point) (point-max)) (exit-minibuffer)) (apply 'completer-goto completions)))) ;;;%%Keymaps ;this interferes with normal undo. ;(define-key minibuffer-local-completion-map "\C-_" 'completer-undo) (define-key minibuffer-local-completion-map "\t" 'completer-complete) (define-key minibuffer-local-completion-map " " 'completer-word) (define-key minibuffer-local-completion-map "?" 'completer-help) (define-key minibuffer-local-completion-map "\n" 'completer-minibuf-exit) (define-key minibuffer-local-completion-map "\r" 'completer-minibuf-exit) (define-key minibuffer-local-completion-map "\M-\n" 'completer-match-exit) (define-key minibuffer-local-completion-map "\M-\r" 'completer-match-exit) ;this interferes with normal undo. ;(define-key minibuffer-local-must-match-map "\C-_" 'completer-undo) (define-key minibuffer-local-must-match-map "\t" 'completer-complete) (define-key minibuffer-local-must-match-map " " 'completer-word) (define-key minibuffer-local-must-match-map "\n" 'completer-exit) (define-key minibuffer-local-must-match-map "\r" 'completer-exit) (define-key minibuffer-local-must-match-map "?" 'completer-help) (define-key minibuffer-local-must-match-map "\M-\n" 'completer-match-exit) (define-key minibuffer-local-must-match-map "\M-\r" 'completer-match-exit) ;;;%comint (defun completer-comint-dynamic-list-completions (completions) "List in help buffer sorted COMPLETIONS. Typing SPC flushes the help buffer." (completer-comint-dynamic-complete-1 nil 'help)) (defun completer-comint-dynamic-complete-filename () "Dynamically complete the filename at point." (interactive) (completer-comint-dynamic-complete-1 nil t)) ;;; (defun completer-comint-dynamic-complete-1 (&optional undo mode) "Complete the previous filename or display possibilities if done twice in a row. If called with a prefix, undo the last completion." (interactive "P") (if undo (completer-undo) ;; added by jwz: don't cache completions in shell buffer! (setq completer-string nil) (let ((conf (current-window-configuration)));; lemacs change (completer-complete-goto "^ \t\n\"" completer-words 'read-file-name-internal default-directory mode) ;; lemacs change (if (eq mode 'help) (comint-restore-window-config conf)) ))) ;(fset 'comint-dynamic-complete 'completer-comint-dynamic-complete) (fset 'comint-dynamic-complete-filename 'completer-comint-dynamic-complete-filename) (fset 'comint-dynamic-list-completions 'completer-comint-dynamic-list-completions) ;;; Set the functions again if comint is loaded (setq comint-load-hook (cons (function (lambda () ;; (fset 'comint-dynamic-complete ;; 'completer-comint-dynamic-complete) (fset 'comint-dynamic-complete-filename 'completer-comint-dynamic-complete-filename) (fset 'comint-dynamic-list-completions 'completer-comint-dynamic-list-completions))) (if (and (boundp 'comint-load-hook) comint-load-hook) (if (consp comint-load-hook) (if (eq (car comint-load-hook) 'lambda) (list comint-load-hook) comint-load-hook) (list comint-load-hook))))) ;;;%lisp-complete-symbol (defun lisp-complete-symbol (&optional mode) "Perform partial 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. If called with a negative prefix, the last completion will be undone." (interactive "P") (if (< (prefix-numeric-value mode) 0) (completer-undo) (let* ((end (save-excursion (skip-chars-forward "^ \t\n)]}\"") (point))) (beg (save-excursion (backward-sexp 1) (while (= (char-syntax (following-char)) ?\') (forward-char 1)) (point))) (pattern (buffer-substring beg end)) (predicate (if (eq (char-after (1- beg)) ?$$) 'fboundp (function (lambda (sym) (or (boundp sym) (fboundp sym) (symbol-plist sym)))))) (completion (try-completion pattern obarray predicate))) (cond ((eq completion t)) ((null completion) (completer-complete-goto "^ \t\n\($$[]{}'" completer-words obarray predicate nil (if (not (eq predicate 'fboundp)) (function (lambda (choice) (if (fboundp (intern choice)) (list choice " ") choice)))))) ((not (string= pattern completion)) (delete-region beg end) (insert completion)) (t (message "Making completion list...") (let ((list (all-completions pattern obarray predicate))) (or (eq predicate 'fboundp) (let (new) (while list (setq new (cons (if (fboundp (intern (car list))) (list (car list) " ") (car list)) new)) (setq list (cdr list))) (setq list (nreverse new)))) (with-output-to-temp-buffer "*Help*" (funcall completion-display-completion-list-function (sort list (function (lambda (x y) (string-lessp (or (car-safe x) x) (or (car-safe y) y)))))))) (message "Making completion list...%s" "done")))))) ;;;%Hooks (provide 'completer) (run-hooks 'completer-load-hook) `