;;; hippie-exp.el --- expand text trying various ways to find its expansion ;; Copyright (C) 1992, 2001, 2002, 2003, 2004, 2005, ;; 2006, 2007 Free Software Foundation, Inc. ;; Author: Anders Holst ;; Last change: 3 March 1998 ;; Version: 1.6 ;; Keywords: abbrev 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: ;; `hippie-expand' is a single function for a lot of different kinds ;; of completions and expansions. Called repeatedly it tries all ;; possible completions in succession. ;; Which kinds of completions to try, and in which order, is ;; determined by the contents of `hippie-expand-try-functions-list'. ;; Much customization of `hippie-expand' can be made by changing the ;; order of, removing, or inserting new functions in this list. ;; Given a positive numeric argument, `hippie-expand' jumps directly ;; ARG functions forward in this list. Given some other argument ;; (a negative argument or just Ctrl-U) it undoes the tried ;; completion. ;; ;; If the variable `hippie-expand-verbose' is non-nil, `hippie-expand' ;; outputs in a message which try-function in the list that is used ;; currently (ie. was used currently and will be tried first the next ;; time). ;; The variable `hippie-expand-max-buffers' determines in how many ;; buffers, apart from the current, to search for expansions in. It ;; is used by the try-functions named "-all-buffers". ;; The variable `hippie-expand-ignore-buffers' is a list of regexps ;; matching buffer names (as strings) or major modes (as atoms) of ;; buffers that should not be searched by the try-functions named ;; "-all-buffers". ;; If set, the variable `hippie-expand-only-buffers' does the opposite ;; of `hippie-expand-ignore-buffers', in that the search is restricted ;; to only the kind of buffers listed. ;; If the variable `hippie-expand-no-restriction' is non-nil, narrowed ;; buffers are widened before they are searched. ;; The variable `hippie-expand-dabbrev-skip-space' controls whether ;; trailing spaces will be included in the abbreviation to search for, ;; which then gives the same behavior as the original `dabbrev-expand'. ;; The variable `hippie-expand-dabbrev-as-symbol' controls whether ;; characters of syntax '_' is considered part of the words to expand ;; dynamically. ;; See also the macro `make-hippie-expand-function' below. ;; ;; A short description of the current try-functions in this file: ;; `try-complete-file-name' : very convenient to have in any buffer, ;; and not just in the minibuffer or (some) shell-mode. It goes ;; through all possible completions instead of just completing as ;; much as is unique. ;; `try-complete-file-name-partially' : To insert in the list just ;; before `try-complete-file-name' for those who want first to get ;; a file name completed only as many characters as is unique. ;; `try-expand-all-abbrevs' : can be removed if you don't use abbrevs. ;; Otherwise it looks through all abbrev-tables, starting with ;; the local followed by the global. ;; `try-expand-line' : Searches the buffer for an entire line that ;; begins exactly as the current line. Convenient sometimes, for ;; example as a substitute for (or complement to) the history ;; list in shell-like buffers. At other times, only confusing. ;; `try-expand-line-all-buffers' : Like `try-expand-line' but searches ;; in all buffers (except the current). (This may be a little ;; slow, don't use it unless you are really fond of `hippie-expand'.) ;; `try-expand-list' : Tries to expand the text back to the nearest ;; open delimiter, to a whole list from the buffer. Convenient for ;; example when writing lisp or TeX. ;; `try-expand-list-all-buffers' : Like `try-expand-list' but searches ;; in all buffers (except the current). ;; `try-expand-dabbrev' : works exactly as dabbrev-expand (but of ;; course in a way compatible with the other try-functions). ;; `try-expand-dabbrev-all-buffers' : perhaps the most useful of them, ;; like `dabbrev-expand' but searches all Emacs buffers (except the ;; current) for matching words. (No, I don't find this one ;; particularly slow.) ;; `try-expand-dabbrev-visible': Searches the currently visible parts of ;; all windows. Can be put before `try-expand-dabbrev-all-buffers' to ;; first try the expansions you can see. ;; `try-expand-dabbrev-from-kill': Searches the kill ring for a suitable ;; completion of the word. Good to have, just in case the word was not ;; found elsewhere. ;; `try-expand-whole-kill' : Tries to complete text with a whole entry ;; from the kill ring. May be good if you don't know how far up in ;; the kill-ring the required entry is, and don't want to mess with ;; "Choose Next Paste". ;; `try-complete-lisp-symbol' : like `lisp-complete-symbol', but goes ;; through all possibilities instead of completing what is unique. ;; Might be tedious (usually a lot of possible completions) and ;; since its function is much like `lisp-complete-symbol', which ;; already has a key of its own, you might want to remove this. ;; `try-complete-lisp-symbol-partially' : To insert in the list just ;; before `try-complete-lisp-symbol' for those who first want to get ;; completion of what is unique in the name. ;; ;; Not all of the above functions are by default in ;; `hippie-expand-try-functions-list'. This variable is better set ;; in ".emacs" to make `hippie-expand' behave maximally convenient ;; according to personal taste. Also, instead of loading the ;; variable with all kinds of try-functions above, it might be an ;; idea to use `make-hippie-expand-function' to construct different ;; `hippie-expand'-like functions, with different try-lists and bound ;; to different keys. It is also possible to make ;; `hippie-expand-try-functions-list' a buffer local variable, and ;; let it depend on the mode (by setting it in the mode-hooks). ;; ;; To write new try-functions, consider the following: ;; Each try-function takes one argument OLD which is nil the first ;; time the function is called and true in succeeding calls for the ;; same string to complete. The first time the function has to ;; extract the string before point to complete, and substitute the ;; first completion alternative for it. On following calls it has to ;; substitute the next possible completion for the last tried string. ;; The try-function is to return t as long as it finds new ;; possible completions. When there are no more alternatives it has ;; to restore the text before point to its original contents, and ;; return nil (don't beep or message or anything). ;; The try-function can (should) use the following functions: ;; `he-init-string' : Initializes the text to substitute to the ;; contents of the region BEGIN to END. Also sets the variable ;; `he-search-string' to the text to expand. ;; `he-substitute-string' : substitutes STR into the region ;; initialized with `he-init-string'. (An optional second argument ;; TRANS-CASE non-nil, means transfer of case from the abbreviation ;; to the expansion is ok if that is enabled in the buffer.) ;; `he-reset-string' : Resets the initialized region to its original ;; contents. ;; There is also a variable: `he-tried-table' which is meant to contain ;; all tried expansions so far. The try-function can check this ;; variable to see whether an expansion has already been tried ;; (hint: `he-string-member'). ;; ;; Known bugs ;; ;; It may happen that some completion suggestion occurs twice, in ;; spite of the use of `he-tried-table' to prevent that. This is ;; because different try-functions may try to complete different ;; lengths of text, and thus put different amounts of the ;; text in `he-tried-table'. Anyway this seems to occur seldom enough ;; not to be too disturbing. Also it should NOT be possible for the ;; opposite situation to occur, that `hippie-expand' misses some ;; suggestion because it thinks it has already tried it. ;; ;; Acknowledgement ;; ;; I want to thank Mikael Djurfeldt in discussions with whom the idea ;; of this function took form. ;; I am also grateful to all those who have given me suggestions on ;; how to improve it, and all those who helped to find and remove bugs. ;; ;;; Code: (eval-when-compile (require 'comint)) (defgroup hippie-expand nil "Expand text trying various ways to find its expansion." :link '(custom-manual "(autotype)Hippie Expand") :link '(emacs-commentary-link "hippie-exp") :group 'abbrev :group 'convenience) (defvar he-num -1) (defvar he-string-beg (make-marker)) (defvar he-string-end (make-marker)) (defvar he-search-string ()) (defvar he-expand-list ()) (defvar he-tried-table ()) (defvar he-search-loc (make-marker)) (defvar he-search-loc2 ()) (defvar he-search-bw ()) (defvar he-search-bufs ()) (defvar he-searched-n-bufs ()) (defvar he-search-window ()) ;;;###autoload (defcustom hippie-expand-try-functions-list '(try-complete-file-name-partially try-complete-file-name try-expand-all-abbrevs try-expand-list try-expand-line try-expand-dabbrev try-expand-dabbrev-all-buffers try-expand-dabbrev-from-kill try-complete-lisp-symbol-partially try-complete-lisp-symbol) "The list of expansion functions tried in order by `hippie-expand'. To change the behavior of `hippie-expand', remove, change the order of, or insert functions in this list." :type '(repeat function) :group 'hippie-expand) ;;;###autoload (defcustom hippie-expand-verbose t "*Non-nil makes `hippie-expand' output which function it is trying." :type 'boolean :group 'hippie-expand) ;;;###autoload (defcustom hippie-expand-dabbrev-skip-space nil "*Non-nil means tolerate trailing spaces in the abbreviation to expand." :group 'hippie-expand :type 'boolean) ;;;###autoload (defcustom hippie-expand-dabbrev-as-symbol t "*Non-nil means expand as symbols, i.e. syntax `_' is considered a letter." :group 'hippie-expand :type 'boolean) ;;;###autoload (defcustom hippie-expand-no-restriction t "*Non-nil means that narrowed buffers are widened during search." :group 'hippie-expand :type 'boolean) ;;;###autoload (defcustom hippie-expand-max-buffers () "*The maximum number of buffers (apart from the current) searched. If nil, all buffers are searched." :type '(choice (const :tag "All" nil) integer) :group 'hippie-expand) ;;;###autoload (defcustom hippie-expand-ignore-buffers '("^ \\*.*\\*$" dired-mode) "*A list specifying which buffers not to search (if not current). Can contain both regexps matching buffer names (as strings) and major modes \(as atoms)" :type '(repeat (choice regexp (symbol :tag "Major Mode"))) :group 'hippie-expand) ;;;###autoload (defcustom hippie-expand-only-buffers () "*A list specifying the only buffers to search (in addition to current). Can contain both regexps matching buffer names (as strings) and major modes \(as atoms). If non-nil, this variable overrides the variable `hippie-expand-ignore-buffers'." :type '(repeat (choice regexp (symbol :tag "Major Mode"))) :group 'hippie-expand) ;;;###autoload (defun hippie-expand (arg) "Try to expand text before point, using multiple methods. The expansion functions in `hippie-expand-try-functions-list' are tried in order, until a possible expansion is found. Repeated application of `hippie-expand' inserts successively possible expansions. With a positive numeric argument, jumps directly to the ARG next function in this list. With a negative argument or just \\[universal-argument], undoes the expansion." (interactive "P") (if (or (not arg) (and (integerp arg) (> arg 0))) (let ((first (or (= he-num -1) (not (equal this-command last-command))))) (if first (progn (setq he-num -1) (setq he-tried-table nil))) (if arg (if (not first) (he-reset-string)) (setq arg 0)) (let ((i (max (+ he-num arg) 0))) (while (not (or (>= i (length hippie-expand-try-functions-list)) (apply (nth i hippie-expand-try-functions-list) (list (= he-num i))))) (setq i (1+ i))) (setq he-num i)) (if (>= he-num (length hippie-expand-try-functions-list)) (progn (setq he-num -1) (if first (message "No expansion found") (message "No further expansions found")) (ding)) (if (and hippie-expand-verbose (not (window-minibuffer-p (selected-window)))) (message "Using %s" (nth he-num hippie-expand-try-functions-list))))) (if (and (>= he-num 0) (eq (marker-buffer he-string-beg) (current-buffer))) (progn (setq he-num -1) (he-reset-string) (if (and hippie-expand-verbose (not (window-minibuffer-p (selected-window)))) (message "Undoing expansions")))))) ;; Initializes the region to expand (to between BEG and END). (defun he-init-string (beg end) (set-marker he-string-beg beg) (set-marker he-string-end end) (setq he-search-string (buffer-substring-no-properties beg end))) ;; Resets the expanded region to its original contents. (defun he-reset-string () (let ((newpos (point-marker))) (goto-char he-string-beg) (insert he-search-string) (delete-region (point) he-string-end) (goto-char newpos))) ;; Substitutes an expansion STR into the correct region (the region ;; initialized with `he-init-string'). ;; An optional argument TRANS-CASE means that it is ok to transfer case ;; from the abbreviation to the expansion if that is possible, and is ;; enabled in the buffer. (defun he-substitute-string (str &optional trans-case) (let ((trans-case (and trans-case case-replace case-fold-search)) (newpos (point-marker)) (subst ())) (goto-char he-string-beg) (setq subst (if trans-case (he-transfer-case he-search-string str) str)) (setq he-tried-table (cons subst he-tried-table)) (insert subst) (delete-region (point) he-string-end) (goto-char newpos))) (defun he-capitalize-first (str) (save-match-data (if (string-match "\\Sw*\\(\\sw\\).*" str) (let ((res (downcase str)) (no (match-beginning 1))) (aset res no (upcase (aref str no))) res) str))) (defun he-ordinary-case-p (str) (or (string= str (downcase str)) (string= str (upcase str)) (string= str (capitalize str)) (string= str (he-capitalize-first str)))) (defun he-transfer-case (from-str to-str) (cond ((string= from-str (substring to-str 0 (min (length from-str) (length to-str)))) to-str) ((not (he-ordinary-case-p to-str)) to-str) ((string= from-str (downcase from-str)) (downcase to-str)) ((string= from-str (upcase from-str)) (upcase to-str)) ((string= from-str (he-capitalize-first from-str)) (he-capitalize-first to-str)) ((string= from-str (capitalize from-str)) (capitalize to-str)) (t to-str))) ;; Check if STR is a member of LST. ;; Transform to the final case if optional TRANS-CASE is non-nil. (defun he-string-member (str lst &optional trans-case) (if str (member (if (and trans-case case-replace case-fold-search) (he-transfer-case he-search-string str) str) lst))) ;; Check if current buffer matches any atom or regexp in LST. ;; Atoms are interpreted as major modes, strings as regexps mathing the name. (defun he-buffer-member (lst) (or (memq major-mode lst) (progn (while (and lst (or (not (stringp (car lst))) (not (string-match (car lst) (buffer-name))))) (setq lst (cdr lst))) lst))) ;; For the real hippie-expand enthusiast: A macro that makes it ;; possible to use many functions like hippie-expand, but with ;; different try-functions-lists. ;; Usage is for example: ;; (fset 'my-complete-file (make-hippie-expand-function ;; '(try-complete-file-name-partially ;; try-complete-file-name))) ;; (fset 'my-complete-line (make-hippie-expand-function ;; '(try-expand-line ;; try-expand-line-all-buffers))) ;; ;;;###autoload (defmacro make-hippie-expand-function (try-list &optional verbose) "Construct a function similar to `hippie-expand'. Make it use the expansion functions in TRY-LIST. An optional second argument VERBOSE non-nil makes the function verbose." `(function (lambda (arg) ,(concat "Try to expand text before point, using the following functions: \n" (mapconcat 'prin1-to-string (eval try-list) ", ")) (interactive "P") (let ((hippie-expand-try-functions-list ,try-list) (hippie-expand-verbose ,verbose)) (hippie-expand arg))))) ;;; Here follows the try-functions and their requisites: (defun try-complete-file-name (old) "Try to complete text as a file name. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (if (not old) (progn (he-init-string (he-file-name-beg) (point)) (let ((name-part (he-file-name-nondirectory he-search-string)) (dir-part (expand-file-name (or (he-file-name-directory he-search-string) "")))) (if (not (he-string-member name-part he-tried-table)) (setq he-tried-table (cons name-part he-tried-table))) (if (and (not (equal he-search-string "")) (he-file-directory-p dir-part)) (setq he-expand-list (sort (file-name-all-completions name-part dir-part) 'string-lessp)) (setq he-expand-list ()))))) (while (and he-expand-list (he-string-member (car he-expand-list) he-tried-table)) (setq he-expand-list (cdr he-expand-list))) (if (null he-expand-list) (progn (if old (he-reset-string)) ()) (let ((filename (he-concat-directory-file-name (he-file-name-directory he-search-string) (car he-expand-list)))) (he-substitute-string filename) (setq he-tried-table (cons (car he-expand-list) (cdr he-tried-table))) (setq he-expand-list (cdr he-expand-list)) t))) (defun try-complete-file-name-partially (old) "Try to complete text as a file name, as many characters as unique. The argument OLD has to be nil the first call of this function. It returns t if a unique, possibly partial, completion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-file-name-beg) (point)) (let ((name-part (he-file-name-nondirectory he-search-string)) (dir-part (expand-file-name (or (he-file-name-directory he-search-string) "")))) (if (and (not (equal he-search-string "")) (he-file-directory-p dir-part)) (setq expansion (file-name-completion name-part dir-part))) (if (or (eq expansion t) (string= expansion name-part) (he-string-member expansion he-tried-table)) (setq expansion ()))))) (if (not expansion) (progn (if old (he-reset-string)) ()) (let ((filename (he-concat-directory-file-name (he-file-name-directory he-search-string) expansion))) (he-substitute-string filename) (setq he-tried-table (cons expansion (cdr he-tried-table))) t)))) (defvar he-file-name-chars (cond ((memq system-type '(vax-vms axp-vms)) "-a-zA-Z0-9_/.,~^#$+=:\\[\\]") ((memq system-type '(ms-dos windows-nt cygwin)) "-a-zA-Z0-9_/.,~^#$+=:\\\\") (t ;; More strange file formats ? "-a-zA-Z0-9_/.,~^#$+=")) "Characters that are considered part of the file name to expand.") (defun he-file-name-beg () (let ((op (point))) (save-excursion (skip-chars-backward he-file-name-chars) (if (> (skip-syntax-backward "w") 0) ;; No words with non-file chars op (point))))) ;; Thanks go to Richard Levitte who helped to make these ;; work under VMS, and to David Hughes who ;; helped to make it work on PC. (defun he-file-name-nondirectory (file) "Fix to make `file-name-nondirectory' work for hippie-expand under VMS." (if (memq system-type '(axp-vms vax-vms)) (let ((n (file-name-nondirectory file))) (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) (concat "[." (substring n (match-beginning 2) (match-end 2))) n)) (file-name-nondirectory file))) (defun he-file-name-directory (file) "Fix to make `file-name-directory' work for hippie-expand under VMS." (if (memq system-type '(axp-vms vax-vms)) (let ((n (file-name-nondirectory file)) (d (file-name-directory file))) (if (string-match "^\\(\\[.*\\)\\.\\([^\\.]*\\)$" n) (concat d (substring n (match-beginning 1) (match-end 1)) "]") d)) (file-name-directory file))) (defun he-file-directory-p (file) "Fix to make `file-directory-p' work for hippie-expand under VMS." (if (memq system-type '(vax-vms axp-vms)) (or (file-directory-p file) (file-directory-p (concat file "[000000]"))) (file-directory-p file))) (defun he-concat-directory-file-name (dir-part name-part) "Try to slam together two parts of a file specification, system dependently." (cond ((null dir-part) name-part) ((memq system-type '(axp-vms vax-vms)) (if (and (string= (substring dir-part -1) "]") (string= (substring name-part 0 2) "[.")) (concat (substring dir-part 0 -1) (substring name-part 1)) (concat dir-part name-part))) ((memq system-type '(ms-dos w32)) (if (and (string-match "\\\\" dir-part) (not (string-match "/" dir-part)) (= (aref name-part (1- (length name-part))) ?/)) (aset name-part (1- (length name-part)) ?\\)) (concat dir-part name-part)) (t (concat dir-part name-part)))) (defun try-complete-lisp-symbol (old) "Try to complete word as an Emacs Lisp symbol. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (if (not old) (progn (he-init-string (he-lisp-symbol-beg) (point)) (if (not (he-string-member he-search-string he-tried-table)) (setq he-tried-table (cons he-search-string he-tried-table))) (setq he-expand-list (and (not (equal he-search-string "")) (sort (all-completions he-search-string obarray (function (lambda (sym) (or (boundp sym) (fboundp sym) (symbol-plist sym))))) 'string-lessp))))) (while (and he-expand-list (he-string-member (car he-expand-list) he-tried-table)) (setq he-expand-list (cdr he-expand-list))) (if (null he-expand-list) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string (car he-expand-list)) (setq he-expand-list (cdr he-expand-list)) t))) (defun try-complete-lisp-symbol-partially (old) "Try to complete as an Emacs Lisp symbol, as many characters as unique. The argument OLD has to be nil the first call of this function. It returns t if a unique, possibly partial, completion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-lisp-symbol-beg) (point)) (if (not (string= he-search-string "")) (setq expansion (try-completion he-search-string obarray (function (lambda (sym) (or (boundp sym) (fboundp sym) (symbol-plist sym))))))) (if (or (eq expansion t) (string= expansion he-search-string) (he-string-member expansion he-tried-table)) (setq expansion ())))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion) t)))) (defun he-lisp-symbol-beg () (save-excursion (skip-syntax-backward "w_") (point))) (defun try-expand-line (old) "Try to complete the current line to an entire line in the buffer. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ()) (strip-prompt (and (get-buffer-process (current-buffer)) comint-use-prompt-regexp comint-prompt-regexp))) (if (not old) (progn (he-init-string (he-line-beg strip-prompt) (point)) (set-marker he-search-loc he-string-beg) (setq he-search-bw t))) (if (not (equal he-search-string "")) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) ;; Try looking backward unless inhibited. (if he-search-bw (progn (goto-char he-search-loc) (setq expansion (he-line-search he-search-string strip-prompt t)) (set-marker he-search-loc (point)) (if (not expansion) (progn (set-marker he-search-loc he-string-end) (setq he-search-bw ()))))) (if (not expansion) ; Then look forward. (progn (goto-char he-search-loc) (setq expansion (he-line-search he-search-string strip-prompt nil)) (set-marker he-search-loc (point))))))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun try-expand-line-all-buffers (old) "Try to complete the current line, searching all other buffers. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ()) (strip-prompt (and (get-buffer-process (current-buffer)) comint-use-prompt-regexp comint-prompt-regexp)) (buf (current-buffer)) (orig-case-fold-search case-fold-search)) (if (not old) (progn (he-init-string (he-line-beg strip-prompt) (point)) (setq he-search-bufs (buffer-list)) (setq he-searched-n-bufs 0) (set-marker he-search-loc 1 (car he-search-bufs)))) (if (not (equal he-search-string "")) (while (and he-search-bufs (not expansion) (or (not hippie-expand-max-buffers) (< he-searched-n-bufs hippie-expand-max-buffers))) (set-buffer (car he-search-bufs)) (if (and (not (eq (current-buffer) buf)) (if hippie-expand-only-buffers (he-buffer-member hippie-expand-only-buffers) (not (he-buffer-member hippie-expand-ignore-buffers)))) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) (goto-char he-search-loc) (setq strip-prompt (and (get-buffer-process (current-buffer)) comint-use-prompt-regexp comint-prompt-regexp)) (setq expansion (let ((case-fold-search orig-case-fold-search)) (he-line-search he-search-string strip-prompt nil))) (set-marker he-search-loc (point)) (if (not expansion) (progn (setq he-search-bufs (cdr he-search-bufs)) (setq he-searched-n-bufs (1+ he-searched-n-bufs)) (set-marker he-search-loc 1 (car he-search-bufs)))))) (setq he-search-bufs (cdr he-search-bufs)) (set-marker he-search-loc 1 (car he-search-bufs))))) (set-buffer buf) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun he-line-search (str strip-prompt reverse) (let ((result ())) (while (and (not result) (if reverse (re-search-backward (he-line-search-regexp str strip-prompt) nil t) (re-search-forward (he-line-search-regexp str strip-prompt) nil t))) (setq result (buffer-substring-no-properties (match-end 1) (match-end 0))) (if (he-string-member result he-tried-table t) (setq result nil))) ; if already in table, ignore result)) (defun he-line-beg (strip-prompt) (save-excursion (if (re-search-backward (he-line-search-regexp "" strip-prompt) (save-excursion (beginning-of-line) (point)) t) (match-beginning 2) (point)))) (defun he-line-search-regexp (pat strip-prompt) (if strip-prompt (concat "\\(" comint-prompt-regexp "\\|^\\s-*\\)\\(" (regexp-quote pat) "[^\n]*[^ \t\n]\\)") (concat "^\\(\\s-*\\)\\(" (regexp-quote pat) "[^\n]*[^ \t\n]\\)"))) (defun try-expand-list (old) "Try to complete the current beginning of a list. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-list-beg) (point)) (set-marker he-search-loc he-string-beg) (setq he-search-bw t))) (if (not (equal he-search-string "")) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) ;; Try looking backward unless inhibited. (if he-search-bw (progn (goto-char he-search-loc) (setq expansion (he-list-search he-search-string t)) (set-marker he-search-loc (point)) (if (not expansion) (progn (set-marker he-search-loc he-string-end) (setq he-search-bw ()))))) (if (not expansion) ; Then look forward. (progn (goto-char he-search-loc) (setq expansion (he-list-search he-search-string nil)) (set-marker he-search-loc (point))))))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun try-expand-list-all-buffers (old) "Try to complete the current list, searching all other buffers. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ()) (buf (current-buffer)) (orig-case-fold-search case-fold-search)) (if (not old) (progn (he-init-string (he-list-beg) (point)) (setq he-search-bufs (buffer-list)) (setq he-searched-n-bufs 0) (set-marker he-search-loc 1 (car he-search-bufs)))) (if (not (equal he-search-string "")) (while (and he-search-bufs (not expansion) (or (not hippie-expand-max-buffers) (< he-searched-n-bufs hippie-expand-max-buffers))) (set-buffer (car he-search-bufs)) (if (and (not (eq (current-buffer) buf)) (if hippie-expand-only-buffers (he-buffer-member hippie-expand-only-buffers) (not (he-buffer-member hippie-expand-ignore-buffers)))) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) (goto-char he-search-loc) (setq expansion (let ((case-fold-search orig-case-fold-search)) (he-list-search he-search-string nil))) (set-marker he-search-loc (point)) (if (not expansion) (progn (setq he-search-bufs (cdr he-search-bufs)) (setq he-searched-n-bufs (1+ he-searched-n-bufs)) (set-marker he-search-loc 1 (car he-search-bufs)))))) (setq he-search-bufs (cdr he-search-bufs)) (set-marker he-search-loc 1 (car he-search-bufs))))) (set-buffer buf) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun he-list-search (str reverse) (let ((result ()) beg pos err) (while (and (not result) (if reverse (search-backward str nil t) (search-forward str nil t))) (setq pos (point)) (setq beg (match-beginning 0)) (goto-char beg) (setq err ()) (condition-case () (forward-list 1) (error (setq err t))) (if (and reverse (> (point) he-string-beg)) (setq err t)) (if (not err) (progn (setq result (buffer-substring-no-properties beg (point))) (if (he-string-member result he-tried-table t) (setq result nil)))) ; if already in table, ignore (goto-char pos)) result)) (defun he-list-beg () (save-excursion (condition-case () (backward-up-list 1) (error ())) (point))) (defun try-expand-all-abbrevs (old) "Try to expand word before point according to all abbrev tables. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible expansions of the same string). It returns t if a new expansion is found, nil otherwise." (if (not old) (progn (he-init-string (he-dabbrev-beg) (point)) (setq he-expand-list (and (not (equal he-search-string "")) (mapcar (function (lambda (sym) (if (and (boundp sym) (vectorp (eval sym))) (abbrev-expansion (downcase he-search-string) (eval sym))))) (append '(local-abbrev-table global-abbrev-table) abbrev-table-name-list)))))) (while (and he-expand-list (or (not (car he-expand-list)) (he-string-member (car he-expand-list) he-tried-table t))) (setq he-expand-list (cdr he-expand-list))) (if (null he-expand-list) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string (car he-expand-list) t) (setq he-expand-list (cdr he-expand-list)) t))) (defun try-expand-dabbrev (old) "Try to expand word \"dynamically\", searching the current buffer. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible expansions of the same string). It returns t if a new expansion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-dabbrev-beg) (point)) (set-marker he-search-loc he-string-beg) (setq he-search-bw t))) (if (not (equal he-search-string "")) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) ;; Try looking backward unless inhibited. (if he-search-bw (progn (goto-char he-search-loc) (setq expansion (he-dabbrev-search he-search-string t)) (set-marker he-search-loc (point)) (if (not expansion) (progn (set-marker he-search-loc he-string-end) (setq he-search-bw ()))))) (if (not expansion) ; Then look forward. (progn (goto-char he-search-loc) (setq expansion (he-dabbrev-search he-search-string nil)) (set-marker he-search-loc (point))))))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun try-expand-dabbrev-all-buffers (old) "Tries to expand word \"dynamically\", searching all other buffers. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible expansions of the same string). It returns t if a new expansion is found, nil otherwise." (let ((expansion ()) (buf (current-buffer)) (orig-case-fold-search case-fold-search)) (if (not old) (progn (he-init-string (he-dabbrev-beg) (point)) (setq he-search-bufs (buffer-list)) (setq he-searched-n-bufs 0) (set-marker he-search-loc 1 (car he-search-bufs)))) (if (not (equal he-search-string "")) (while (and he-search-bufs (not expansion) (or (not hippie-expand-max-buffers) (< he-searched-n-bufs hippie-expand-max-buffers))) (set-buffer (car he-search-bufs)) (if (and (not (eq (current-buffer) buf)) (if hippie-expand-only-buffers (he-buffer-member hippie-expand-only-buffers) (not (he-buffer-member hippie-expand-ignore-buffers)))) (save-excursion (save-restriction (if hippie-expand-no-restriction (widen)) (goto-char he-search-loc) (setq expansion (let ((case-fold-search orig-case-fold-search)) (he-dabbrev-search he-search-string nil))) (set-marker he-search-loc (point)) (if (not expansion) (progn (setq he-search-bufs (cdr he-search-bufs)) (setq he-searched-n-bufs (1+ he-searched-n-bufs)) (set-marker he-search-loc 1 (car he-search-bufs)))))) (setq he-search-bufs (cdr he-search-bufs)) (set-marker he-search-loc 1 (car he-search-bufs))))) (set-buffer buf) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) ;; Thanks go to Jeff Dairiki who ;; suggested this one. (defun try-expand-dabbrev-visible (old) "Try to expand word \"dynamically\", searching visible window parts. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible expansions of the same string). It returns t if a new expansion is found, nil otherwise." (let ((expansion ()) (buf (current-buffer)) (flag (if (frame-visible-p (window-frame (selected-window))) 'visible t))) (if (not old) (progn (he-init-string (he-dabbrev-beg) (point)) (setq he-search-window (selected-window)) (set-marker he-search-loc (window-start he-search-window) (window-buffer he-search-window)))) (while (and (not (equal he-search-string "")) (marker-position he-search-loc) (not expansion)) (save-excursion (set-buffer (marker-buffer he-search-loc)) (goto-char he-search-loc) (setq expansion (he-dabbrev-search he-search-string () (window-end he-search-window))) (if (and expansion (eq (marker-buffer he-string-beg) (current-buffer)) (eq (marker-position he-string-beg) (match-beginning 0))) (setq expansion (he-dabbrev-search he-search-string () (window-end he-search-window)))) (set-marker he-search-loc (point) (current-buffer))) (if (not expansion) (progn (setq he-search-window (next-window he-search-window nil flag)) (if (eq he-search-window (selected-window)) (set-marker he-search-loc nil) (set-marker he-search-loc (window-start he-search-window) (window-buffer he-search-window)))))) (set-buffer buf) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun he-dabbrev-search (pattern &optional reverse limit) (let ((result ()) (regpat (cond ((not hippie-expand-dabbrev-as-symbol) (concat "\\<" (regexp-quote pattern) "\\sw+")) ((eq (char-syntax (aref pattern 0)) ?_) (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) (t (concat "\\<" (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+"))))) (while (and (not result) (if reverse (re-search-backward regpat limit t) (re-search-forward regpat limit t))) (setq result (buffer-substring-no-properties (match-beginning 0) (match-end 0))) (if (or (and hippie-expand-dabbrev-as-symbol (> (match-beginning 0) (point-min)) (memq (char-syntax (char-after (1- (match-beginning 0)))) '(?_ ?w))) (he-string-member result he-tried-table t)) (setq result nil))) ; ignore if bad prefix or already in table result)) (defun he-dabbrev-beg () (let ((op (point))) (save-excursion (if hippie-expand-dabbrev-skip-space (skip-syntax-backward ". ")) (if (= (skip-syntax-backward (if hippie-expand-dabbrev-as-symbol "w_" "w")) 0) op (point))))) (defun try-expand-dabbrev-from-kill (old) "Try to expand word \"dynamically\", searching the kill ring. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-dabbrev-beg) (point)) (setq he-expand-list (if (not (equal he-search-string "")) kill-ring)) (setq he-search-loc2 0))) (if (not (equal he-search-string "")) (setq expansion (he-dabbrev-kill-search he-search-string))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion t) t)))) (defun he-dabbrev-kill-search (pattern) (let ((result ()) (regpat (cond ((not hippie-expand-dabbrev-as-symbol) (concat "\\<" (regexp-quote pattern) "\\sw+")) ((eq (char-syntax (aref pattern 0)) ?_) (concat (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")) (t (concat "\\<" (regexp-quote pattern) "\\(\\sw\\|\\s_\\)+")))) (killstr (car he-expand-list))) (while (and (not result) he-expand-list) (while (and (not result) (string-match regpat killstr he-search-loc2)) (setq result (substring killstr (match-beginning 0) (match-end 0))) (set-text-properties 0 (length result) () result) (setq he-search-loc2 (1+ (match-beginning 0))) (if (or (and hippie-expand-dabbrev-as-symbol (> (match-beginning 0) 0) (memq (char-syntax (aref killstr (1- (match-beginning 0)))) '(?_ ?w))) (he-string-member result he-tried-table t)) (setq result nil))) ; ignore if bad prefix or already in table (if (and (not result) he-expand-list) (progn (setq he-expand-list (cdr he-expand-list)) (setq killstr (car he-expand-list)) (setq he-search-loc2 0)))) result)) (defun try-expand-whole-kill (old) "Try to complete text with something from the kill ring. The argument OLD has to be nil the first call of this function, and t for subsequent calls (for further possible completions of the same string). It returns t if a new completion is found, nil otherwise." (let ((expansion ())) (if (not old) (progn (he-init-string (he-kill-beg) (point)) (if (not (he-string-member he-search-string he-tried-table)) (setq he-tried-table (cons he-search-string he-tried-table))) (setq he-expand-list (if (not (equal he-search-string "")) kill-ring)) (setq he-search-loc2 ()))) (if (not (equal he-search-string "")) (setq expansion (he-whole-kill-search he-search-string))) (if (not expansion) (progn (if old (he-reset-string)) ()) (progn (he-substitute-string expansion) t)))) (defun he-whole-kill-search (str) (let ((case-fold-search ()) (result ()) (str (regexp-quote str)) (killstr (car he-expand-list)) (pos -1)) (while (and (not result) he-expand-list) (if (not he-search-loc2) (while (setq pos (string-match str killstr (1+ pos))) (setq he-search-loc2 (cons pos he-search-loc2)))) (while (and (not result) he-search-loc2) (setq pos (car he-search-loc2)) (setq he-search-loc2 (cdr he-search-loc2)) (save-excursion (goto-char he-string-beg) (if (and (>= (- (point) pos) (point-min)) ; avoid some string GC (eq (char-after (- (point) pos)) (aref killstr 0)) (search-backward (substring killstr 0 pos) (- (point) pos) t)) (progn (setq result (substring killstr pos)) (set-text-properties 0 (length result) () result)))) (if (and result (he-string-member result he-tried-table)) (setq result nil))) ; ignore if already in table (if (and (not result) he-expand-list) (progn (setq he-expand-list (cdr he-expand-list)) (setq killstr (car he-expand-list)) (setq pos -1)))) result)) (defun he-kill-beg () (let ((op (point))) (save-excursion (skip-syntax-backward "^w_") (if (= (skip-syntax-backward "w_") 0) op (point))))) (provide 'hippie-exp) ;;; arch-tag: 5e6e00bf-b061-4a7a-9b46-de0ae105ab99 ;;; hippie-exp.el ends here