* lisp/faces.el (read-multiple-choice-face): Fix doc string.
* lisp/emacs-lisp/subr-x.el (read-multiple-choice): Move here
from subr.el.
* lisp/gnus/message.el (subr-x): Ditto.
* lisp/net/nsm.el: Require subr-x for read-multiple-choice.
read-multiple-choice doesn't need to be in the dumped Emacs, so move
it to a less central file.
(substring string 0 (- (length string) (length suffix)))
string))
+(defun read-multiple-choice (prompt choices)
+ "Ask user a multiple choice question.
+PROMPT should be a string that will be displayed as the prompt.
+
+CHOICES is an alist where the first element in each entry is a
+character to be entered, the second element is a short name for
+the entry to be displayed while prompting (if there's room, it
+might be shortened), and the third, optional entry is a longer
+explanation that will be displayed in a help buffer if the user
+requests more help.
+
+This function translates user input into responses by consulting
+the bindings in `query-replace-map'; see the documentation of
+that variable for more information. In this case, the useful
+bindings are `recenter', `scroll-up', and `scroll-down'. If the
+user enters `recenter', `scroll-up', or `scroll-down' responses,
+perform the requested window recentering or scrolling and ask
+again.
+
+The return value is the matching entry from the CHOICES list.
+
+Usage example:
+
+\(read-multiple-choice \"Continue connecting?\"
+ '((?a \"always\")
+ (?s \"session only\")
+ (?n \"no\")))"
+ (let* ((altered-names nil)
+ (full-prompt
+ (format
+ "%s (%s): "
+ prompt
+ (mapconcat
+ (lambda (elem)
+ (let* ((name (cadr elem))
+ (pos (seq-position name (car elem)))
+ (altered-name
+ (cond
+ ;; Not in the name string.
+ ((not pos)
+ (format "[%c] %s" (car elem) name))
+ ;; The prompt character is in the name, so highlight
+ ;; it on graphical terminals...
+ ((display-supports-face-attributes-p
+ '(:underline t) (window-frame))
+ (setq name (copy-sequence name))
+ (put-text-property pos (1+ pos)
+ 'face 'read-multiple-choice-face
+ name)
+ name)
+ ;; And put it in [bracket] on non-graphical terminals.
+ (t
+ (concat
+ (substring name 0 pos)
+ "["
+ (upcase (substring name pos (1+ pos)))
+ "]"
+ (substring name (1+ pos)))))))
+ (push (cons (car elem) altered-name)
+ altered-names)
+ altered-name))
+ (append choices '((?? "?")))
+ ", ")))
+ tchar buf wrong-char answer)
+ (save-window-excursion
+ (save-excursion
+ (while (not tchar)
+ (message "%s%s"
+ (if wrong-char
+ "Invalid choice. "
+ "")
+ full-prompt)
+ (setq tchar
+ (if (and (display-popup-menus-p)
+ last-input-event ; not during startup
+ (listp last-nonmenu-event)
+ use-dialog-box)
+ (x-popup-dialog
+ t
+ (cons prompt
+ (mapcar
+ (lambda (elem)
+ (cons (capitalize (cadr elem))
+ (car elem)))
+ choices)))
+ (condition-case nil
+ (let ((cursor-in-echo-area t))
+ (read-char))
+ (error nil))))
+ (setq answer (lookup-key query-replace-map (vector tchar) t))
+ (setq tchar
+ (cond
+ ((eq answer 'recenter)
+ (recenter) t)
+ ((eq answer 'scroll-up)
+ (ignore-errors (scroll-up-command)) t)
+ ((eq answer 'scroll-down)
+ (ignore-errors (scroll-down-command)) t)
+ ((eq answer 'scroll-other-window)
+ (ignore-errors (scroll-other-window)) t)
+ ((eq answer 'scroll-other-window-down)
+ (ignore-errors (scroll-other-window-down)) t)
+ (t tchar)))
+ (when (eq tchar t)
+ (setq wrong-char nil
+ tchar nil))
+ ;; The user has entered an invalid choice, so display the
+ ;; help messages.
+ (when (and (not (eq tchar nil))
+ (not (assq tchar choices)))
+ (setq wrong-char (not (memq tchar '(?? ?\C-h)))
+ tchar nil)
+ (when wrong-char
+ (ding))
+ (with-help-window (setq buf (get-buffer-create
+ "*Multiple Choice Help*"))
+ (with-current-buffer buf
+ (erase-buffer)
+ (pop-to-buffer buf)
+ (insert prompt "\n\n")
+ (let* ((columns (/ (window-width) 25))
+ (fill-column 21)
+ (times 0)
+ (start (point)))
+ (dolist (elem choices)
+ (goto-char start)
+ (unless (zerop times)
+ (if (zerop (mod times columns))
+ ;; Go to the next "line".
+ (goto-char (setq start (point-max)))
+ ;; Add padding.
+ (while (not (eobp))
+ (end-of-line)
+ (insert (make-string (max (- (* (mod times columns)
+ (+ fill-column 4))
+ (current-column))
+ 0)
+ ?\s))
+ (forward-line 1))))
+ (setq times (1+ times))
+ (let ((text
+ (with-temp-buffer
+ (insert (format
+ "%c: %s\n"
+ (car elem)
+ (cdr (assq (car elem) altered-names))))
+ (fill-region (point-min) (point-max))
+ (when (nth 2 elem)
+ (let ((start (point)))
+ (insert (nth 2 elem))
+ (unless (bolp)
+ (insert "\n"))
+ (fill-region start (point-max))))
+ (buffer-string))))
+ (goto-char start)
+ (dolist (line (split-string text "\n"))
+ (end-of-line)
+ (if (bolp)
+ (insert line "\n")
+ (insert line))
+ (forward-line 1)))))))))))
+ (when (buffer-live-p buf)
+ (kill-buffer buf))
+ (assq tchar choices)))
+
(provide 'subr-x)
;;; subr-x.el ends here
(defface read-multiple-choice-face
'((t (:inherit underline
:weight bold)))
- "Face for the symbol name in Apropos output."
+ "Face for the symbol name in `read-multiple-choice' output."
:group 'basic-faces
:version "25.2")
(require 'mm-util)
(require 'rfc2047)
(require 'puny)
+(require 'subr-x)
(autoload 'mailclient-send-it "mailclient")
;;; Code:
(require 'cl-lib)
+(require 'subr-x)
(defvar nsm-permanent-host-settings nil)
(defvar nsm-temporary-host-settings nil)
(message "%s%s" prompt (char-to-string char))
char))
-(defun read-multiple-choice (prompt choices)
- "Ask user a multiple choice question.
-PROMPT should be a string that will be displayed as the prompt.
-
-CHOICES is an alist where the first element in each entry is a
-character to be entered, the second element is a short name for
-the entry to be displayed while prompting (if there's room, it
-might be shortened), and the third, optional entry is a longer
-explanation that will be displayed in a help buffer if the user
-requests more help.
-
-This function translates user input into responses by consulting
-the bindings in `query-replace-map'; see the documentation of
-that variable for more information. In this case, the useful
-bindings are `recenter', `scroll-up', and `scroll-down'. If the
-user enters `recenter', `scroll-up', or `scroll-down' responses,
-perform the requested window recentering or scrolling and ask
-again.
-
-The return value is the matching entry from the CHOICES list.
-
-Usage example:
-
-\(read-multiple-choice \"Continue connecting?\"
- '((?a \"always\")
- (?s \"session only\")
- (?n \"no\")))"
- (let* ((altered-names nil)
- (full-prompt
- (format
- "%s (%s): "
- prompt
- (mapconcat
- (lambda (elem)
- (let* ((name (cadr elem))
- (pos (seq-position name (car elem)))
- (altered-name
- (cond
- ;; Not in the name string.
- ((not pos)
- (format "[%c] %s" (car elem) name))
- ;; The prompt character is in the name, so highlight
- ;; it on graphical terminals...
- ((display-supports-face-attributes-p
- '(:underline t) (window-frame))
- (setq name (copy-sequence name))
- (put-text-property pos (1+ pos)
- 'face 'read-multiple-choice-face
- name)
- name)
- ;; And put it in [bracket] on non-graphical terminals.
- (t
- (concat
- (substring name 0 pos)
- "["
- (upcase (substring name pos (1+ pos)))
- "]"
- (substring name (1+ pos)))))))
- (push (cons (car elem) altered-name)
- altered-names)
- altered-name))
- (append choices '((?? "?")))
- ", ")))
- tchar buf wrong-char answer)
- (save-window-excursion
- (save-excursion
- (while (not tchar)
- (message "%s%s"
- (if wrong-char
- "Invalid choice. "
- "")
- full-prompt)
- (setq tchar
- (if (and (display-popup-menus-p)
- last-input-event ; not during startup
- (listp last-nonmenu-event)
- use-dialog-box)
- (x-popup-dialog
- t
- (cons prompt
- (mapcar
- (lambda (elem)
- (cons (capitalize (cadr elem))
- (car elem)))
- choices)))
- (condition-case nil
- (let ((cursor-in-echo-area t))
- (read-char))
- (error nil))))
- (setq answer (lookup-key query-replace-map (vector tchar) t))
- (setq tchar
- (cond
- ((eq answer 'recenter)
- (recenter) t)
- ((eq answer 'scroll-up)
- (ignore-errors (scroll-up-command)) t)
- ((eq answer 'scroll-down)
- (ignore-errors (scroll-down-command)) t)
- ((eq answer 'scroll-other-window)
- (ignore-errors (scroll-other-window)) t)
- ((eq answer 'scroll-other-window-down)
- (ignore-errors (scroll-other-window-down)) t)
- (t tchar)))
- (when (eq tchar t)
- (setq wrong-char nil
- tchar nil))
- ;; The user has entered an invalid choice, so display the
- ;; help messages.
- (when (and (not (eq tchar nil))
- (not (assq tchar choices)))
- (setq wrong-char (not (memq tchar '(?? ?\C-h)))
- tchar nil)
- (when wrong-char
- (ding))
- (with-help-window (setq buf (get-buffer-create
- "*Multiple Choice Help*"))
- (with-current-buffer buf
- (erase-buffer)
- (pop-to-buffer buf)
- (insert prompt "\n\n")
- (let* ((columns (/ (window-width) 25))
- (fill-column 21)
- (times 0)
- (start (point)))
- (dolist (elem choices)
- (goto-char start)
- (unless (zerop times)
- (if (zerop (mod times columns))
- ;; Go to the next "line".
- (goto-char (setq start (point-max)))
- ;; Add padding.
- (while (not (eobp))
- (end-of-line)
- (insert (make-string (max (- (* (mod times columns)
- (+ fill-column 4))
- (current-column))
- 0)
- ?\s))
- (forward-line 1))))
- (setq times (1+ times))
- (let ((text
- (with-temp-buffer
- (insert (format
- "%c: %s\n"
- (car elem)
- (cdr (assq (car elem) altered-names))))
- (fill-region (point-min) (point-max))
- (when (nth 2 elem)
- (let ((start (point)))
- (insert (nth 2 elem))
- (unless (bolp)
- (insert "\n"))
- (fill-region start (point-max))))
- (buffer-string))))
- (goto-char start)
- (dolist (line (split-string text "\n"))
- (end-of-line)
- (if (bolp)
- (insert line "\n")
- (insert line))
- (forward-line 1)))))))))))
- (when (buffer-live-p buf)
- (kill-buffer buf))
- (assq tchar choices)))
-
(defun sit-for (seconds &optional nodisp obsolete)
"Redisplay, then wait for SECONDS seconds. Stop when input is available.
SECONDS may be a floating-point value.
projects / emacs.git / commitdiff