emacsbug.el

;;; emacsbug.el --- command to report Emacs bugs to appropriate mailing list.

;; Copyright (C) 1985, 1994, 1997 Free Software Foundation, Inc.

;; Author: K. Shane Hartman
;; Maintainer: FSF
;; Keywords: maint

;; Not fully installed because it can work only on Internet hosts.
;; 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., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; `M-x report-emacs-bug ' starts an email note to the Emacs maintainers
;; describing a problem.  Here's how it's done...

;;; Code:

;; >> This should be an address which is accessible to your machine,
;; >> otherwise you can't use this file.  It will only work on the
;; >> internet with this address.

(require 'sendmail)

(defvar bug-gnu-emacs "bug-gnu-emacs@prep.ai.mit.edu"
  "Address of mailing list for GNU Emacs bugs.")

(defvar report-emacs-bug-pretest-address "emacs-pretest-bug@gnu.ai.mit.edu"
  "Address of mailing list for GNU Emacs pretest bugs.")

(defvar report-emacs-bug-orig-text nil
  "The automatically-created initial text of bug report.")

;;;###autoload
(defvar report-emacs-bug-run-tersely nil
  "*If non-nil, suppress confirmations for novice users.")

;;;###autoload
(defun report-emacs-bug (topic &optional recent-keys)
  "Report a bug in GNU Emacs.
Prompts for bug subject.  Leaves you in a mail buffer."
  ;; This strange form ensures that (recent-keys) is the value before
  ;; the bug subject string is read.
  (interactive (reverse (list (recent-keys) (read-string "Bug Subject: "))))
  (condition-case nil
      (let (user-point message-end-point)
	(setq message-end-point
	      (with-current-buffer (get-buffer "*Messages*")
		(point-max-marker)))
	(compose-mail (if (string-match "\\..*\\..*\\." emacs-version)
			  ;; If there are four numbers in emacs-version,
			  ;; this is a pretest version.
			  report-emacs-bug-pretest-address
			bug-gnu-emacs)
		      topic)
	;; The rest of this does not execute
	;; if the user was asked to confirm and said no.
	(goto-char (point-min))
	(re-search-forward (concat "^" (regexp-quote mail-header-separator) "\n"))
	;; Insert warnings for novice users.
	(insert "This bug report will be sent to the Free Software Foundation,\n")
	(let ((pos (point)))
	  (insert " not to your local site managers!!")
	  (put-text-property pos (point) 'face 'highlight))
	(insert "\nPlease write in ")
	(let ((pos (point)))
	  (insert "English")
	  (put-text-property pos (point) 'face 'highlight))
	(insert ", because the Emacs maintainers do not have
translators to read other languages for them.\n\n")

	(insert "In " (emacs-version) "\n")
	(if (and system-configuration-options
		 (not (equal system-configuration-options "")))
	    (insert "configured using `configure "
		    system-configuration-options "'\n"))
	(insert "\n")
	(insert "Please describe exactly what actions triggered the bug\n"
		"and the precise symptoms of the bug:\n\n") 
	(setq user-point (point))
	(insert "\n\n\n"
		"Recent input:\n")
	(let ((before-keys (point)))
	  (insert (mapconcat (lambda (key)
			       (if (or (integerp key)
				       (symbolp key)
				       (listp key))
				   (single-key-description key)
				 (prin1-to-string key nil)))
			     (or recent-keys (recent-keys))
			     " "))
	  (save-restriction
	    (narrow-to-region before-keys (point))
	    (goto-char before-keys)
	    (while (progn (move-to-column 50) (not (eobp)))
	      (search-forward " " nil t)
	      (insert "\n"))))
	(let ((message-buf (get-buffer "*Messages*")))
	  (if message-buf
	      (let (beg-pos
		    (end-pos message-end-point))
		(with-current-buffer message-buf
		  (goto-char end-pos)
		  (forward-line -10)
		  (setq beg-pos (point)))
		(insert "\n\nRecent messages:\n")
		(insert-buffer-substring message-buf beg-pos end-pos))))
	;; This is so the user has to type something
	;; in order to send easily.
	(use-local-map (nconc (make-sparse-keymap) (current-local-map)))
	(define-key (current-local-map) "\C-c\C-i" 'report-emacs-bug-info)
	(with-output-to-temp-buffer "*Bug Help*"
	  (if (eq mail-user-agent 'sendmail-user-agent)
	      (princ (substitute-command-keys
		      "Type \\[mail-send-and-exit] to send the bug report.\n")))
	  (princ (substitute-command-keys
		  "Type \\[kill-buffer] RET to cancel (don't send it).\n"))
	  (terpri)
	  (princ (substitute-command-keys
		  "Type \\[report-emacs-bug-info] to visit in Info the Emacs Manual section
about when and how to write a bug report,
and what information to supply so that the bug can be fixed.
Type SPC to scroll through this section and its subsections.")))
	;; Make it less likely people will send empty messages.
	(make-local-variable 'mail-send-hook)
	(add-hook 'mail-send-hook 'report-emacs-bug-hook)
	;; Discourage users to write non-English text.
	(setq enable-multibyte-characters nil)
	(save-excursion
	  (goto-char (point-max))
	  (skip-chars-backward " \t\n")
	  (make-local-variable 'report-emacs-bug-orig-text)
	  (setq report-emacs-bug-orig-text (buffer-substring (point-min) (point))))
	(goto-char user-point))
    (error nil)))

(defun report-emacs-bug-info ()
  "Go to the Info node on reporting Emacs bugs."
  (interactive)
  (info)
  (Info-directory)
  (Info-menu "emacs")
  (Info-goto-node "Bugs"))

(defun report-emacs-bug-hook ()
  (save-excursion
    (goto-char (point-max))
    (skip-chars-backward " \t\n")
    (if (and (= (- (point) (point-min))
		(length report-emacs-bug-orig-text))
	     (equal (buffer-substring (point-min) (point))
		    report-emacs-bug-orig-text))
	(error "No text entered in bug report"))

    ;; Check the buffer contents and reject non-English letters.
    (let ((charsets (delq 'ascii
			  (find-charset-region (point-min) (point-max)))))
      (if charsets
	  (if (or report-emacs-bug-run-tersely
		  (y-or-n-p "Convert non-ASCII letters to hexadecimal? "))
	      (save-excursion
		(goto-char (point-min))
		(let ((enable-multibyte-characters nil)
		      (pattern (format "[%c-%c]" 128 255))
		      ch)
		  (while (re-search-forward pattern nil t)
		    (setq ch (preceding-char))
		    (delete-char -1)
		    (insert (format "=%02x" ch)))))
	    (error "Please convert non-ASCII characters to something else"))))

    ;; The last warning for novice users.
    (if (or report-emacs-bug-run-tersely
	    (yes-or-no-p
	     "Send this bug report to the Emacs maintainers? "))
	;; Just send the current mail.
	nil
      (goto-char (point-min))
      (if (search-forward "To: ")
	  (let ((pos (point)))
	    (end-of-line)
	    (delete-region pos (point))))
      (kill-local-variable 'mail-send-hook)
      (with-output-to-temp-buffer "*Bug Help*"
	(princ (substitute-command-keys "\
You invoked the command M-x report-emacs-bug,
but you decided not to mail the bug report to the Emacs maintainers.

If you want to mail it to someone else instead,
please insert the proper e-mail address after \"To: \",
and send the mail again using \\[mail-send-and-exit].")))
      (error "M-x report-emacs-bug was cancelled, please read *Bug Help* buffer"))
    ))

(provide 'emacsbug)

;;; emacsbug.el ends here