C-x n s no longer works in outline mode

C-x n s no longer works in outline mode

[Leo]

I have been using this outside of org-mode for many years but it is
broken in 7.7.

Debugger entered--Lisp error: (error "Before first headline at position 134230 in buffer init")
  signal(error ("Before first headline at position 134230 in buffer init"))
  error("Before first headline at position %d in buffer %s" 134230 #<buffer init>)
  byte-code("\300\301`p#\207" [error "Before first headline at position %d in buffer %s"] 4)
  org-back-to-heading(t)
  org-narrow-to-subtree()
  call-interactively(org-narrow-to-subtree nil nil)

Leo

Re: C-x n s no longer works in outline mode

[Leo]

Note:

Broken by commit http://orgmode.org/w/?p=org-mode.git;a=commitdiff;h=1e59039f8cf93830f930f7dc99117c41586552e9

Re: C-x n s no longer works in outline mode

[Bastien]

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Hi Leo,

Leo <sdl.web@gmail.com> writes:

> I have been using this outside of org-mode for many years but it is
> broken in 7.7.

I suggest using this (new) outline function instead:

#+begin_src emacs-lisp
(defun outline-narrow-to-subtree ()
  "Narrow buffer to the current subtree."
  (interactive)
  (save-excursion
    (save-match-data
      (narrow-to-region
       (progn (outline-back-to-heading t) (point))
       (progn (outline-end-of-subtree)
	      (if (and (outline-on-heading-p t) (not (eobp))) 
		  (backward-char 1))
	      (point))))))
#+end_src

You can patch outline.el with the attached patch to bind this command to
C-c @ C-s in outline-mode or outline-minor-mode.

I will submit this patch to Emacs developers. 


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--- lisp/outline.el	2011-04-19 13:44:55 +0000
+++ lisp/outline.el	2011-08-15 13:41:50 +0000
@@ -83,6 +83,7 @@
     (define-key map "\C-k" 'show-branches)
     (define-key map "\C-q" 'hide-sublevels)
     (define-key map "\C-o" 'hide-other)
+    (define-key map "\C-s" 'outline-narrow-to-subtree)
     (define-key map "\C-^" 'outline-move-subtree-up)
     (define-key map "\C-v" 'outline-move-subtree-down)
     (define-key map [(control ?<)] 'outline-promote)
@@ -1116,6 +1117,18 @@
 		    (insert "\n\n"))))))
 	  (kill-new (buffer-string)))))))
 
+(defun outline-narrow-to-subtree ()
+  "Narrow buffer to the current subtree."
+  (interactive)
+  (save-excursion
+    (save-match-data
+      (narrow-to-region
+       (progn (outline-back-to-heading t) (point))
+       (progn (outline-end-of-subtree)
+	      (if (and (outline-on-heading-p t) (not (eobp))) 
+		  (backward-char 1))
+	      (point))))))
+
 (provide 'outline)
 (provide 'noutline)
 

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-- 
 Bastien