Commit 32bae13c authored by Stefan Monnier's avatar Stefan Monnier
Browse files

* lisp/minibuffer.el: New file.

* src/minibuf.c (last_exact_completion): Remove variable.
(Fdelete_minibuffer_contents, do_completion, Fminibuffer_complete)
(complete_and_exit_1, complete_and_exit_2)
(Fminibuffer_complete_and_exit, Fminibuffer_complete_word)
(Fdisplay_completion_list, display_completion_list_1)
(Fminibuffer_completion_help, Fself_insert_and_exit)
(Fexit_minibuffer, Fminibuffer_message): Move functions to minibuffer.el.
(syms_of_minibuf): Remove corresponding initializations.
parent 5c4cc82a
2008-04-09 Stefan Monnier <>
* minibuffer.el: New file.
2008-04-08 Stefan Monnier <>
* ($(lisp)/mh-e/mh-loaddefs.el): Make it depend on mh-e/*.el
rather than subdirs.el. It introduces an ugly circular dependency, tho.
* calc/calc.el: Load "cal-loaddefs" rather than set up autoloads manually.
* calc/calc.el: Load "cal-loaddefs" rather than set up manual autoloads.
(calc-mode-map, calc-digit-map, calc-dispatch-map):
Move initialization into declaration.
* calc/calc-yank.el:
* calc/calc-misc.el:
* calc/calc-embed.el:
* calc/calc-aent.el: Add autoload cookies and set generated-autoload-file.
* calc/calc-aent.el: Add autoload cookies. Set generated-autoload-file.
2008-04-08 Michael Albinus <>
;;; minibuffer.el --- Minibuffer completion functions
;; Copyright (C) 2008 Free Software Foundation, Inc.
;; Author: Stefan Monnier <>
;; 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 3 of the License, or
;; (at your option) any later version.
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with this program. If not, see <>.
;;; Commentary:
;; TODO:
;; - merge do-completion and complete-word
;; - move all I/O out of do-completion
;;; Code:
(eval-when-compile (require 'cl))
(defun minibuffer-message (message &rest args)
"Temporarily display MESSAGE at the end of the minibuffer.
The text is displayed for `minibuffer-message-timeout' seconds,
or until the next input event arrives, whichever comes first.
Enclose MESSAGE in [...] if this is not yet the case.
If ARGS are provided, then pass MESSAGE through `format'."
;; Clear out any old echo-area message to make way for our new thing.
(message nil)
(unless (string-match "\\[.+\\]" message)
(setq message (concat " [" message "]")))
(when args (setq message (apply 'format message args)))
(let ((ol (make-overlay (point-max) (point-max) nil t t)))
(overlay-put ol 'after-string message)
(sit-for (or minibuffer-message-timeout 1000000)))
(delete-overlay ol))))
(defun minibuffer-completion-contents ()
"Return the user input in a minibuffer before point as a string.
That is what completion commands operate on."
(buffer-substring (field-beginning) (point)))
(defun delete-minibuffer-contents ()
"Delete all user input in a minibuffer.
If the current buffer is not a minibuffer, erase its entire contents."
(defun minibuffer--maybe-completion-help ()
(if completion-auto-help
(minibuffer-message "Next char not unique")))
(defun minibuffer-do-completion ()
"Do the completion and return a summary of what happened.
C = There were available completions.
E = After completion we now have an exact match.
M = Completion was performed, the text was Modified.
000 0 no possible completion
010 1 was already an exact and unique completion
110 3 was already an exact completion
111 4 completed to an exact completion
101 5 some completion happened
100 6 no completion happened"
(let* ((string (minibuffer-completion-contents))
(completion (try-completion (field-string)
(setq last-exact-completion nil)
((null completion)
(ding) (minibuffer-message "No match") 0)
((eq t completion) 1) ;Exact and unique match.
;; `completed' should be t if some completion was done, which doesn't
;; include simply changing the case of the entered string. However,
;; for appearance, the string is rewritten if the case changes.
(let ((completed (not (eq t (compare-strings completion nil nil
string nil nil t))))
(unchanged (eq t (compare-strings completion nil nil
string nil nil nil))))
(unless unchanged
(let ((beg (field-beginning))
(end (point)))
(insert completion)
(delete-region beg end)))
(if (not (or unchanged completed))
;; The case of the string changed, but that's all. We're not sure
;; whether this is a unique completion or not, so try again using
;; the real case (this shouldn't recurse again, because the next
;; time try-completion will return either t or the exact string).
;; It did find a match. Do we match some possibility exactly now?
(let ((exact (test-completion (field-string)
((not exact)
(if completed 5
(completed 4)
;; If the last exact completion and this one were the same,
;; it means we've already given a "Complete but not unique"
;; message and the user's hit TAB again, so now we give him help.
(if (eq this-command last-command)
(defun minibuffer-complete ()
"Complete the minibuffer contents as far as possible.
Return nil if there is no valid completion, else t.
If no characters can be completed, display a list of possible completions.
If you repeat this command after it displayed such a list,
scroll the window of possible completions."
;; If the previous command was not this,
;; mark the completion buffer obsolete.
(unless (eq this-command last-command)
(setq minibuffer-scroll-window nil))
(let ((window minibuffer-scroll-window))
;; If there's a fresh completion window with a live buffer,
;; and this command is repeated, scroll that window.
(if (window-live-p window)
(with-current-buffer (window-buffer window)
(if (pos-visible-in-window-p (point-max) window)
;; If end is in view, scroll up to the beginning.
(set-window-start window (point-min) nil)
;; Else scroll down one screen.
(let ((i (minibuffer-do-completion)))
(case i
(0 nil)
(1 (goto-char (field-end))
(minibuffer-message "Sole completion")
(3 (goto-char (field-end))
(minibuffer-message "Complete, but not unique")
(t t))))))
(defun minibuffer-complete-and-exit ()
"If the minibuffer contents is a valid completion then exit.
Otherwise try to complete it. If completion leads to a valid completion,
a repetition of this command will exit."
;; Allow user to specify null string
((= (field-beginning) (field-end)) (exit-minibuffer))
((test-completion (field-string)
(when completion-ignore-case
;; Fixup case of the field, if necessary.
(let* ((string (field-string))
(compl (try-completion string
(when (and (stringp compl)
;; If it weren't for this piece of paranoia, I'd replace
;; the whole thing with a call to complete-do-completion.
(= (length string) (length compl)))
(let ((beg (field-beginning))
(end (field-end)))
(goto-char end)
(insert compl)
(delete-region beg end)))))
((eq minibuffer-completion-confirm 'confirm-only)
;; The user is permitted to exit with an input that's rejected
;; by test-completion, but at the condition to confirm her choice.
(if (eq last-command this-command)
(minibuffer-message "Confirm")
;; Call do-completion, but ignore errors.
(let ((i (condition-case nil
(error 1))))
(case i
((1 3) (exit-minibuffer))
(4 (if (not minibuffer-completion-confirm)
(minibuffer-message "Confirm")
(t nil))))))
(defun minibuffer-complete-word ()
"Complete the minibuffer contents at most a single word.
After one word is completed as much as possible, a space or hyphen
is added, provided that matches some possible completion.
Return nil if there is no valid completion, else t."
(let* ((beg (field-beginning))
(string (buffer-substring beg (point)))
(completion (try-completion string
((null completion)
(ding) (minibuffer-message "No match") nil)
((eq t completion) nil) ;Exact and unique match.
;; Completing a single word is actually more difficult than completing
;; as much as possible, because we first have to find the "current
;; position" in `completion' in order to find the end of the word
;; we're completing. Normally, `string' is a prefix of `completion',
;; which makes it trivial to find the position, but with fancier
;; completion (plus env-var expansion, ...) `completion' might not
;; look anything like `string' at all.
(when minibuffer-completing-file-name
;; In order to minimize the problem mentioned above, let's try to
;; reduce the different between `string' and `completion' by
;; mirroring some of the work done in read-file-name-internal.
(let ((substituted (condition-case nil
;; Might fail when completing an env-var.
(substitute-in-file-name string)
(error string))))
(unless (eq string substituted)
(setq string substituted)
(let ((end (point)))
(insert substituted)
(delete-region beg end)))))
;; Make buffer (before point) contain the longest match
;; of `string's tail and `completion's head.
(let* ((startpos (max 0 (- (length string) (length completion))))
(length (- (length string) startpos)))
(while (and (> length 0)
(not (eq t (compare-strings string startpos nil
completion 0 length
(setq startpos (1+ startpos))
(setq length (1- length)))
(setq string (substring string startpos))
(delete-region beg (+ beg startpos)))
;; Now `string' is a prefix of `completion'.
;; If completion finds next char not unique,
;; consider adding a space or a hyphen.
(when (= (length string) (length completion))
(let ((exts '(" " "-"))
(while (and exts (not (stringp tem)))
(setq tem (try-completion (concat string (pop exts))
(if (stringp tem) (setq completion tem))))
(if (= (length string) (length completion))
;; If got no characters, print help for user.
(if completion-auto-help (minibuffer-completion-help))
;; Otherwise insert in minibuffer the chars we got.
(if (string-match "\\W" completion (length string))
;; First find first word-break in the stuff found by completion.
;; i gets index in string of where to stop completing.
(setq completion (substring completion 0 (match-end 0))))
(if (and (eq ?/ (aref completion (1- (length completion))))
(eq ?/ (char-after)))
(setq completion (substring completion 0 (1- (length completion)))))
(let ((pos (point)))
(insert completion)
(delete-region beg pos)
(defun minibuffer-complete-insert-strings (strings)
"Insert a list of STRINGS into the current buffer.
Uses columns to keep the listing readable but compact.
It also eliminates runs of equal strings."
(when (consp strings)
(let* ((length (apply 'max
(mapcar (lambda (s)
(if (consp s)
(+ (length (car s)) (length (cadr s)))
(length s)))
(window (get-buffer-window (current-buffer) 0))
(wwidth (if window (1- (window-width window)) 79))
(columns (min
;; At least 2 columns; at least 2 spaces between columns.
(max 2 (/ wwidth (+ 2 length)))
;; Don't allocate more columns than we can fill.
;; Windows can't show less than 3 lines anyway.
(max 1 (/ (length strings) 2))))
(colwidth (/ wwidth columns))
(column 0)
(laststring nil))
;; The insertion should be "sensible" no matter what choices were made
;; for the parameters above.
(dolist (str strings)
(unless (equal laststring str) ; Remove (consecutive) duplicates.
(setq laststring str)
(unless (bolp)
(insert " \t")
(setq column (+ column colwidth))
;; Leave the space unpropertized so that in the case we're
;; already past the goal column, there is still
;; a space displayed.
(set-text-properties (- (point) 1) (point)
;; We can't just set tab-width, because
;; completion-setup-function will kill all
;; local variables :-(
`(display (space :align-to ,column))))
(when (< wwidth (+ (max colwidth
(if (consp str)
(+ (length (car str)) (length (cadr str)))
(length str)))
(delete-char -2) (insert "\n") (setq column 0))
(if (not (consp str))
(put-text-property (point) (progn (insert str) (point))
'mouse-face 'highlight)
(put-text-property (point) (progn (insert (car str)) (point))
'mouse-face 'highlight)
(put-text-property (point) (progn (insert (cadr str)) (point))
'mouse-face nil)))))))
(defvar completion-common-substring)
(defun display-completion-list (completions &optional common-substring)
"Display the list of completions, COMPLETIONS, using `standard-output'.
Each element may be just a symbol or string
or may be a list of two strings to be printed as if concatenated.
If it is a list of two strings, the first is the actual completion
alternative, the second serves as annotation.
`standard-output' must be a buffer.
The actual completion alternatives, as inserted, are given `mouse-face'
properties of `highlight'.
At the end, this runs the normal hook `completion-setup-hook'.
It can find the completion buffer in `standard-output'.
The optional second arg COMMON-SUBSTRING is a string.
It is used to put faces, `completions-first-difference' and
`completions-common-part' on the completion buffer. The
`completions-common-part' face is put on the common substring
and the current buffer is not the minibuffer, the faces are not put.
Internally, COMMON-SUBSTRING is bound to `completion-common-substring'
during running `completion-setup-hook'."
(if (not (bufferp standard-output))
;; This *never* (ever) happens, so there's no point trying to be clever.
(let ((standard-output (current-buffer))
(completion-setup-hook nil))
(display-completion-list completions))
(princ (buffer-string)))
(with-current-buffer standard-output
(goto-char (point-max))
(if (null completions)
(insert "There are no possible completions of what you have typed.")
(insert "Possible completions are:\n")
(minibuffer-complete-insert-strings completions))))
(let ((completion-common-substring common-substring))
(run-hooks 'completion-setup-hook))
(defun minibuffer-completion-help ()
"Display a list of possible completions of the current minibuffer contents."
(message "Making completion list...")
(let* ((string (field-string))
(completions (all-completions
(message nil)
(if (and completions
(or (cdr completions) (not (equal (car completions) string))))
(with-output-to-temp-buffer "*Completions*"
(display-completion-list (sort completions 'string-lessp)))
;; If there are no completions, or if the current input is already the
;; only possible completion, then hide (previous&stale) completions.
(let ((window (and (get-buffer "*Completions*")
(get-buffer-window "*Completions*" 0))))
(when (and (window-live-p window) (window-dedicated-p window))
(condition-case ()
(delete-window window)
(error (iconify-frame (window-frame window))))))
(if completions "Sole completion" "No completions")))
(defun exit-minibuffer ()
"Terminate this minibuffer argument."
;; If the command that uses this has made modifications in the minibuffer,
;; we don't want them to cause deactivation of the mark in the original
;; buffer.
;; A better solution would be to make deactivate-mark buffer-local
;; (or to turn it into a list of buffers, ...), but in the mean time,
;; this should do the trick in most cases.
(setq deactivate_mark nil)
(throw 'exit nil))
(defun self-insert-and-exit ()
"Terminate minibuffer input."
(if (characterp last-command-char)
(call-interactively 'self-insert-command)
(provide 'minibuffer)
;;; minibuffer.el ends here
2008-04-09 Stefan Monnier <>
* minibuf.c (last_exact_completion): Remove variable.
(Fdelete_minibuffer_contents, do_completion, Fminibuffer_complete)
(complete_and_exit_1, complete_and_exit_2)
(Fminibuffer_complete_and_exit, Fminibuffer_complete_word)
(Fdisplay_completion_list, display_completion_list_1)
(Fminibuffer_completion_help, Fself_insert_and_exit)
(Fexit_minibuffer, Fminibuffer_message): Move functions to minibuffer.el.
(syms_of_minibuf): Remove corresponding initializations.
* keyboard.c (Qdeactivate_mark): New var.
(command_loop_1): Use it to call `deactivate-mark'.
(syms_of_keyboard): Initialize it.
......@@ -783,6 +783,7 @@ lisp= \
${lispsource}register.elc \
${lispsource}replace.elc \
${lispsource}simple.elc \
${lispsource}minibuffer.elc \
${lispsource}startup.elc \
${lispsource}subr.elc \
${lispsource}term/tty-colors.elc \
......@@ -873,6 +874,7 @@ shortlisp= \
../lisp/register.elc \
../lisp/replace.elc \
../lisp/simple.elc \
../lisp/minibuffer.elc \
../lisp/startup.elc \
../lisp/subr.elc \
../lisp/term/tty-colors.elc \
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