(debug): Quieten Drew Adams.

[bpt/emacs.git] / lisp / outline.el

diff --git a/lisp/outline.el b/lisp/outline.el
index fa63fef..b807365 100644 (file)
--- a/lisp/outline.el
+++ b/lisp/outline.el
@@ -1,6 +1,6 @@
 ;;; outline.el --- outline mode commands for Emacs
 
-;; Copyright (C) 1986, 93, 94, 95, 97, 2000, 2001
+;; Copyright (C) 1986, 1993, 1994, 1995, 1997, 2000, 2001, 2004
 ;;   Free Software Foundation, Inc.
 
 ;; Maintainer: FSF
@@ -167,14 +167,45 @@ in the file it applies to."
                  0 '(outline-font-lock-face) nil t)))
   "Additional expressions to highlight in Outline mode.")
 
-(defface outline-1 '((t :inherit font-lock-function-name-face)) "Level 1.")
-(defface outline-2 '((t :inherit font-lock-variable-name-face)) "Level 2.")
-(defface outline-3 '((t :inherit font-lock-keyword-face)) "Level 3.")
-(defface outline-4 '((t :inherit font-lock-builtin-face)) "Level 4.")
-(defface outline-5 '((t :inherit font-lock-comment-face)) "Level 5.")
-(defface outline-6 '((t :inherit font-lock-constant-face)) "Level 6.")
-(defface outline-7 '((t :inherit font-lock-type-face)) "Level 7.")
-(defface outline-8 '((t :inherit font-lock-string-face)) "Level 8.")
+(defface outline-1
+  '((t :inherit font-lock-function-name-face))
+  "Level 1."
+  :group 'outlines)
+
+(defface outline-2
+  '((t :inherit font-lock-variable-name-face))
+  "Level 2."
+  :group 'outlines)
+
+(defface outline-3
+  '((t :inherit font-lock-keyword-face))
+  "Level 3."
+  :group 'outlines)
+
+(defface outline-4
+  '((t :inherit font-lock-builtin-face))
+  "Level 4."
+  :group 'outlines)
+
+(defface outline-5
+  '((t :inherit font-lock-comment-face))
+  "Level 5."
+  :group 'outlines)
+
+(defface outline-6
+  '((t :inherit font-lock-constant-face))
+  "Level 6."
+  :group 'outlines)
+
+(defface outline-7
+  '((t :inherit font-lock-type-face))
+  "Level 7."
+  :group 'outlines)
+
+(defface outline-8
+  '((t :inherit font-lock-string-face))
+  "Level 8."
+  :group 'outlines)
 
 (defvar outline-font-lock-faces
   [outline-1 outline-2 outline-3 outline-4
@@ -216,6 +247,9 @@ in the file it applies to."
 (defvar outline-mode-hook nil
   "*This hook is run when outline mode starts.")
 
+(defvar outline-blank-line nil
+  "*Non-nil means to leave unhidden blank line before heading.")
+
 ;;;###autoload
 (define-derived-mode outline-mode text-mode "Outline"
   "Set major mode for editing outlines with selective display.
@@ -349,7 +383,7 @@ at the end of the buffer."
   (if (re-search-forward (concat "\n\\(?:" outline-regexp "\\)")
                         nil 'move)
       (goto-char (match-beginning 0)))
-  (if (and (bolp) (not (bobp)))
+  (if (and (bolp) (or outline-blank-line (eobp)) (not (bobp)))
       (forward-char -1)))
 
 (defun outline-next-heading ()
@@ -410,7 +444,8 @@ If INVISIBLE-OK is non-nil, an invisible heading line is ok too."
                    (or (caar outline-heading-alist) "")
                  (match-string 0)))))
     (unless (or (string-match "[ \t]\\'" head)
-               (not (string-match outline-regexp (concat head " "))))
+               (not (string-match (concat "\\`\\(?:" outline-regexp "\\)")
+                                  (concat head " "))))
       (setq head (concat head " ")))
     (unless (bolp) (end-of-line) (newline))
     (insert head)
@@ -486,7 +521,8 @@ in the region."
                  ;; Bummer!! There is no lower heading in the buffer.
                  ;; Let's try to invent one by repeating the first char.
                  (let ((new-head (concat (substring head 0 1) head)))
-                   (if (string-match (concat "\\`" outline-regexp) new-head)
+                   (if (string-match (concat "\\`\\(?:" outline-regexp "\\)")
+                                     new-head)
                        ;; Why bother checking that it is indeed lower level ?
                        new-head
                      ;; Didn't work: keep it as is so it's still a heading.
@@ -557,7 +593,7 @@ the match data is set appropriately."
 (defun outline-move-subtree-down (&optional arg)
   "Move the currrent subtree down past ARG headlines of the same level."
   (interactive "p")
-  (let ((re (concat "^" outline-regexp))
+  (let ((re (concat "^\\(?:" outline-regexp "\\)"))
        (movfunc (if (> arg 0) 'outline-get-next-sibling
                   'outline-get-last-sibling))
        (ins-point (make-marker))
@@ -704,8 +740,8 @@ If FLAG is nil then text is shown, while if FLAG is t the text is hidden."
   "Hide the body directly following this heading."
   (interactive)
   (outline-back-to-heading)
-  (outline-end-of-heading)
   (save-excursion
+    (outline-end-of-heading)
     (outline-flag-region (point) (progn (outline-next-preface) (point)) t)))
 
 (defun show-entry ()
@@ -718,7 +754,7 @@ Show the heading too, if it is currently invisible."
                         (progn (outline-next-preface) (point)) nil)))
 
 (defun hide-body ()
-  "Hide all of buffer except headings."
+  "Hide all body lines in buffer, leaving all headings visible."
   (interactive)
   (hide-region-body (point-min) (point-max)))
 
@@ -733,7 +769,8 @@ Show the heading too, if it is currently invisible."
        (narrow-to-region start end)
        (goto-char (point-min))
        (if (outline-on-heading-p)
-           (outline-end-of-heading))
+           (outline-end-of-heading)
+         (outline-next-preface))
        (while (not (eobp))
          (outline-flag-region (point)
                               (progn (outline-next-preface) (point)) t)
@@ -768,9 +805,10 @@ Show the heading too, if it is currently invisible."
 (defun outline-show-heading ()
   "Show the current heading and move to its end."
   (outline-flag-region (- (point)
-                         (if (bobp) 0
-                           (if (eq (char-before (1- (point))) ?\n)
-                               2 1)))
+                         (if (bobp) 0
+                           (if (and outline-blank-line
+                                     (eq (char-before (1- (point))) ?\n))
+                               2 1)))
                       (progn (outline-end-of-heading) (point))
                       nil))
 
@@ -802,7 +840,7 @@ Show the heading too, if it is currently invisible."
     (save-excursion
       (outline-back-to-heading t)
       (show-entry)
-      (while (condition-case nil (progn (outline-up-heading 1) (not (bobp)))
+      (while (condition-case nil (progn (outline-up-heading 1 t) (not (bobp)))
               (error nil))
        (outline-flag-region (1- (point))
                             (save-excursion (forward-line 1) (point))
@@ -839,9 +877,9 @@ Show the heading too, if it is currently invisible."
        (progn
          ;; Go to end of line before heading
          (forward-char -1)
-         (if (bolp)
-             ;; leave blank line before heading
-             (forward-char -1))))))
+          (if (and outline-blank-line (bolp))
+             ;; leave blank line before heading
+             (forward-char -1))))))
 \f
 (defun show-branches ()
   "Show all subheadings of this heading, but not their bodies."
@@ -882,6 +920,8 @@ Default is enough to cause the following heading to appear."
 With argument, move up ARG levels.
 If INVISIBLE-OK is non-nil, also consider invisible lines."
   (interactive "p")
+  (and (eq this-command 'outline-up-heading)
+       (or (eq last-command 'outline-up-heading) (push-mark)))
   (outline-back-to-heading invisible-ok)
   (let ((start-level (funcall outline-level)))
     (if (eq start-level 1)