[debbugs-tracker] bug#14352: closed (24.3; Python: narrow-to-defun narrows to class, not method)

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Your message dated Wed, 25 Dec 2013 17:07:30 -0300
with message-id <address@hidden>
and subject line 
has caused the debbugs.gnu.org bug report #14352,
regarding 24.3; Python: narrow-to-defun narrows to class, not method
to be marked as done.

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14352: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=14352
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--- Begin Message --- Subject: 24.3; Python: narrow-to-defun narrows to class, not method Date: Sun, 5 May 2013 10:43:05 -0700

This bug report will be sent to the Bug-GNU-Emacs mailing list

and the GNU bug tracker at debbugs.gnu.org.  Please check that

the From: line contains a valid email address.  After a delay of up

to one day, you should receive an acknowledgment at that address.

Please write in English if possible, as the Emacs maintainers

usually do not have translators for other languages.

Please describe exactly what actions triggered the bug, and

the precise symptoms of the bug.  If you can, give a recipe

starting from `emacs -Q':

Put the following python program into a file named /tmp/repro.py.  It

should have 9 lines and 120 characters.

==>8====>8====>8====>8====>8====>8====>8====>8====>8====>8====>8====>8==

# Hello world

class Frotz(object):

    def meth(self):

        foo = 'bar'

    def seth(self):

        znort='frotz'

==8<====8<====8<====8<====8<====8<====8<====8<====8<====8<====8<====8<==

Start emacs with "emacs -Q".

C-x C-f /tmp/repro.py RET

M-x goto-line RET 5 RET

C-x n d

I see almost the entire file -- only the first two lines have been

hidden by narrowing.  I'd have expected to see only the two lines

starting with "def meth".

In GNU Emacs 24.3.1 (x86_64-apple-darwin, NS apple-appkit-1038.36)

 of 2013-03-12 on bob.porkrind.org

Windowing system distributor `Apple', version 10.3.1187

Configured using:

 `configure '--host=x86_64-apple-darwin' '--build=i686-apple-darwin'

 '--with-ns' 'build_alias=i686-apple-darwin'

 'host_alias=x86_64-apple-darwin' 'CC=gcc -mmacosx-version-min=10.7

 -isystem

 /Users/david/Xcode-10.7_4.5.2/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/usr/include/

 -F/Users/david/Xcode-10.7_4.5.2/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.7.sdk/System/Library/Frameworks''

Important settings:

  locale-coding-system: nil

  default enable-multibyte-characters: t

Major mode: Python

Minor modes in effect:

  tooltip-mode: t

  mouse-wheel-mode: t

  tool-bar-mode: t

  menu-bar-mode: t

  file-name-shadow-mode: t

  global-font-lock-mode: t

  font-lock-mode: t

  blink-cursor-mode: t

  auto-composition-mode: t

  auto-encryption-mode: t

  auto-compression-mode: t

  line-number-mode: t

  transient-mark-mode: t

Recent input:

C-x C-f / t m p / r e p <tab> <return> C-u C-n C-u 

C-n C-n C-n C-n C-x n d M-x r e p o r t - e m <tab> 

<return>

Recent messages:

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emacs)

--- End Message ---

> --- Begin Message ---
>
>
>
> Subject: 
>
>
>
>
>
>
> Date: 
>
> Wed, 25 Dec 2013 17:07:30 -0300
>
>
>
>
> User-agent: 
>
> mu4e 0.9.9.6pre2; emacs 24.3.1
>
>
>
>
> Unfortunately, this seems like intended behavior (and I do agree that I
> don't like it either). I suggest you raise this to emacs-devel if you
> really want to change default behavior.
>
> Check the `mark-defun' definition at
> emacs/trunk/lisp/emacs-lisp/lisp.el:427 and you'll see that it does have
> an explicit call to `beginning-of-defun' for "languages with nested
> functions... e.g. Python."
>
> A similar approach seems to takes place in `narrow-to-defun' at
> emacs/trunk/lisp/emacs-lisp/lisp.el:470 which causes this.
>
> >From my side I've been narrowing defuns by calling `end-of-line' first
> if I'm looking at it. You could rebind the `narrow-to-defun' command in
> the `python-mode-map' to the following command:
>
>     (defun python-narrow-to-defun (&optional _arg)
>       "Make text outside current defun invisible.
>     The defun visible is the one that contains point or follows
>     point.  Optional ARG is ignored."
>       (interactive)
>       (save-excursion
>         (end-of-line 1)
>         (narrow-to-defun)))
>
>
> Regards,
> Fabián.
>
>
> --- End Message ---