This value is used as the default for `Info-directory-list'. It is set
in paths.el.")
+(defvar Info-fontify t
+ "*Non-nil enables highlighting and fonts in Info nodes.")
+
(defvar Info-directory-list
(let ((path (getenv "INFOPATH")))
(if path
"Marker pointing at beginning of current Info file's tag table.
Marker points nowhere if file has no tag table.")
+(defvar Info-current-file-completions nil
+ "Cached completion list for current Info file.")
+
(defvar Info-index-alternatives nil
"List of possible matches for last Info-index command.")
-(defvar Info-suffix-list '( ("" . nil)
- (".info" . nil)
+(defvar Info-standalone nil
+ "Non-nil if Emacs was started solely as an Info browser.")
+
+(defvar Info-suffix-list '( (".info" . nil)
+ ("" . nil)
(".Z" . "uncompress")
(".Y" . "unyabba")
(".gz" . "gunzip")
(switch-to-buffer "*info*")
(Info-directory))))
+;;;###autoload
+(defun info-standalone ()
+ "Run Emacs as a standalone Info reader.
+Usage: emacs -f info-standalone [filename]
+In standalone mode, \\<Info-mode-map>\\[Info-exit] exits Emacs itself."
+ (setq Info-standalone t)
+ (if (and command-line-args-left
+ (not (string-match "^-" (car command-line-args-left))))
+ (condition-case err
+ (progn
+ (info (car command-line-args-left))
+ (setq command-line-args-left (cdr command-line-args-left)))
+ (error (send-string-to-terminal
+ (format "%s\n" (if (eq (car-safe err) 'error)
+ (nth 1 err) err)))
+ (save-buffers-kill-emacs)))
+ (info)))
+
;; Go to an info node specified as separate filename and nodename.
;; no-going-back is non-nil if recovering from an error in this function;
;; it says do not attempt further (recursive) error recovery.
(let ((buffer-read-only nil))
(setq Info-current-file nil
Info-current-subfile nil
+ Info-current-file-completions nil
Info-index-alternatives nil
buffer-file-name nil)
(erase-buffer)
(read (current-buffer))))))
(point-max)))
(if Info-enable-active-nodes (eval active-expression))
+ (if Info-fontify (Info-fontify-node))
(run-hooks 'Info-selection-hook))))
(defun Info-set-mode-line ()
(defun Info-goto-node (nodename)
"Go to info node named NAME. Give just NODENAME or (FILENAME)NODENAME."
- (interactive "sGoto node: ")
+ (interactive (list (Info-read-node-name "Goto node: ")))
(let (filename)
(string-match "\\s *\\((\\s *\\([^\t)]*\\)\\s *)\\s *\\|\\)\\(.*\\)"
nodename)
(if trim (setq nodename (substring nodename 0 trim))))
(Info-find-node (if (equal filename "") nil filename)
(if (equal nodename "") "Top" nodename))))
+
+(defun Info-read-node-name (prompt &optional default)
+ (let* ((completion-ignore-case t)
+ (nodename (completing-read prompt (Info-build-node-completions))))
+ (if (equal nodename "")
+ (or default
+ (Info-read-node-name prompt))
+ nodename)))
+
+(defun Info-build-node-completions ()
+ (or Info-current-file-completions
+ (let ((compl nil))
+ (save-excursion
+ (save-restriction
+ (if (marker-buffer Info-tag-table-marker)
+ (progn
+ (set-buffer (marker-buffer Info-tag-table-marker))
+ (goto-char Info-tag-table-marker)
+ (while (re-search-forward "\nNode: \\(.*\\)\177" nil t)
+ (setq compl
+ (cons (list (buffer-substring (match-beginning 1)
+ (match-end 1)))
+ compl))))
+ (widen)
+ (goto-char (point-min))
+ (while (search-forward "\n\^_" nil t)
+ (forward-line 1)
+ (let ((beg (point)))
+ (forward-line 1)
+ (if (re-search-backward "Node: *\\([^,\n]*\\) *[,\n\t]"
+ beg t)
+ (setq compl
+ (cons (list (buffer-substring (match-beginning 1)
+ (match-end 1)))
+ compl))))))))
+ (setq Info-current-file-completions compl))))
\f
(defun Info-restore-point (hl)
"If this node has been visited, restore the point value when we left."
(defun Info-exit ()
"Exit Info by selecting some other buffer."
(interactive)
- (switch-to-buffer (prog1 (other-buffer (current-buffer))
- (bury-buffer (current-buffer)))))
+ (if Info-standalone
+ (save-buffers-kill-emacs)
+ (switch-to-buffer (prog1 (other-buffer (current-buffer))
+ (bury-buffer (current-buffer))))))
(defun Info-next-menu-item ()
(interactive)
(error "No previous items in menu"))
(Info-goto-node (Info-extract-menu-node-name))))
-(defmacro no-error (&rest body)
+(defmacro Info-no-error (&rest body)
(list 'condition-case nil (cons 'progn (append body '(t))) '(error nil)))
(defun Info-next-preorder ()
"Go to the next node, popping up a level if there is none."
(interactive)
- (cond ((no-error (Info-next-menu-item)) )
- ((no-error (Info-up)) (forward-line 1))
+ (cond ((looking-at "\\*note[ \n]*\\([^:]*\\):")
+ (Info-follow-reference
+ (buffer-substring (match-beginning 1) (match-end 1))))
+ ((Info-no-error (Info-next-menu-item)) )
+ ((Info-no-error (Info-up)) (forward-line 1))
(t (error "No more nodes"))))
(defun Info-last-preorder ()
"Go to the last node, popping up a level if there is none."
(interactive)
- (cond ((no-error (Info-last-menu-item)) )
- ((no-error (Info-up)) (forward-line -1))
+ (cond ((Info-no-error (Info-last-menu-item)) )
+ ((Info-no-error (Info-up)) (forward-line -1))
(t (error "No previous nodes"))))
(defun Info-scroll-up ()
(scroll-down))
)
+(defun Info-next-reference ()
+ "Move cursor to the next cross-reference or menu item in the node."
+ (interactive)
+ (let ((pat "\\*note[ \n\t]*\\([^:]*\\):\\|^\\* .*:")
+ (old-pt (point)))
+ (or (eobp) (forward-char 1))
+ (or (re-search-forward pat nil t)
+ (progn
+ (goto-char (point-min))
+ (or (re-search-forward pat nil t)
+ (progn
+ (goto-char old-pt)
+ (error "No cross references in this node")))))
+ (goto-char (match-beginning 0))
+ (if (looking-at "\\* Menu:")
+ (Info-next-reference))))
+
+(defun Info-prev-reference ()
+ "Move cursor to the previous cross-reference or menu item in the node."
+ (interactive)
+ (let ((pat "\\*note[ \n\t]*\\([^:]*\\):\\|^\\* .*:")
+ (old-pt (point)))
+ (or (re-search-backward pat nil t)
+ (progn
+ (goto-char (point-max))
+ (or (re-search-backward pat nil t)
+ (progn
+ (goto-char old-pt)
+ (error "No cross references in this node")))))
+ (goto-char (match-beginning 0))
+ (if (looking-at "\\* Menu:")
+ (Info-prev-reference))))
+
(defun Info-index (topic)
"Look up a string in the index for this file.
The index is defined as the first node in the top-level menu whose
(if (not (eq ?\ (setq ch (read-event))))
(progn (setq unread-command-events (list ch)) nil)
flag))
- (scroll-up)))))
+ (scroll-up)))
+ (bury-buffer "*Help*")))
\f
(defun Info-get-token (pos start all &optional errorstring)
"Return the token around POS,
(define-key Info-mode-map "." 'beginning-of-buffer)
(define-key Info-mode-map " " 'Info-scroll-up)
(define-key Info-mode-map "\C-m" 'Info-next-preorder)
+ (define-key Info-mode-map "\t" 'Info-next-reference)
+ (define-key Info-mode-map "\e\t" 'Info-prev-reference)
(define-key Info-mode-map "1" 'Info-nth-menu-item)
(define-key Info-mode-map "2" 'Info-nth-menu-item)
(define-key Info-mode-map "3" 'Info-nth-menu-item)
2, 3, 4, 5 Pick second ... fifth item in node's menu.
\\[Info-goto-node] Move to node specified by name.
You may include a filename as well, as (FILENAME)NODENAME.
+\\[universal-argument] \\[info] Move to new Info file with completion.
\\[Info-search] Search through this Info file for specified regexp,
and select the node in which the next occurrence is found.
\\[Info-next-preorder] Next-preorder; that is, try to go to the next menu item,
and if that fails try to move up, and if that fails, tell user
- he/she is done reading."
+ he/she is done reading.
+\\[Info-next-reference] Move cursor to next cross-reference or menu item.
+\\[Info-prev-reference] Move cursor to previous cross-reference or menu item."
(kill-all-local-variables)
(setq major-mode 'Info-mode)
(setq mode-name "Info")
(make-local-variable 'Info-tag-table-marker)
(make-local-variable 'Info-history)
(make-local-variable 'Info-index-alternatives)
+ (if (fboundp 'make-face)
+ (progn
+ (make-face 'info-node)
+ (make-face 'info-menu-5)
+ (make-face 'info-xref)
+ (or (face-differs-from-default-p 'info-node)
+ (if (face-differs-from-default-p 'bold-italic)
+ (copy-face 'bold-italic 'info-node)
+ (copy-face 'bold 'info-node)))
+ (or (face-differs-from-default-p 'info-menu-5)
+ (set-face-underline-p 'info-menu-5 t))
+ (or (face-differs-from-default-p 'info-xref)
+ (copy-face 'bold 'info-xref)))
+ (setq Info-fontify nil))
(Info-set-mode-line)
(run-hooks 'Info-mode-hook))
(read-command "Find documentation for command: ")))
(t
(Info-goto-emacs-command-node command)))))
+\f
+(defun Info-fontify-node ()
+ (save-excursion
+ (let ((buffer-read-only nil))
+ (goto-char (point-min))
+ (if (looking-at "^File: [^,: \t]+,?[ \t]+")
+ (progn
+ (goto-char (match-end 0))
+ (while
+ (looking-at "[ \t]*[^:, \t\n]+:[ \t]+\\([^:,\t\n]+\\),?")
+ (goto-char (match-end 0))
+ (put-text-property (match-beginning 1) (match-end 1)
+ 'face 'info-xref))))
+ (goto-char (point-min))
+ (while (re-search-forward "\\*Note[ \n\t]*\\([^:]*\\):" nil t)
+ (if (= (char-after (1- (match-beginning 0))) ?\") ; hack
+ nil
+ (put-text-property (match-beginning 1) (match-end 1)
+ 'face 'info-xref)))
+ (goto-char (point-min))
+ (if (and (search-forward "\n* Menu:" nil t)
+ (not (string-match "\\<Index\\>" Info-current-node))
+ ;; Don't take time to annotate huge menus
+ (< (- (point-max) (point)) 10000))
+ (let ((n 0))
+ (while (re-search-forward "^\\* \\([^:\t\n]*\\):" nil t)
+ (setq n (1+ n))
+ (if (memq n '(5 9)) ; visual aids to help with 1-9 keys
+ (put-text-property (match-beginning 0)
+ (1+ (match-beginning 0))
+ 'face 'info-menu-5))
+ (put-text-property (match-beginning 1) (match-end 1)
+ 'face 'info-node))))
+ (set-buffer-modified-p nil))))
(provide 'info)
HCoop / bpt / emacs.git / commitdiff