bug#11169: 24.0.95; (Wish/FR): Revert an archive member

bug#11169: 24.0.95; (Wish/FR): Revert an archive member

[Jambunathan K]

It would be quite useful if there is a way to revert an archive
member. It could work something like this:

1. Revert a buffer
2. Check if the buffer is from an archive (See `archive-superior-buffer')
3. Check if the parent archive has changed and revert the parent archive
4. Refresh this and possibly other open archive members

Context for the request:

OpenDocument files are zip archives. While developing or fixing issues
with org-odt.el (ODT exporter for Org) I go through this sequence:

1. Unzip test.odt and extract content.xml
2. Identify problematic OpenDocument markup
3. Fix/Modify org-odt.el
4. Re-export test.org
5. Kill test.odt:content.xml
6. Revert test.odt
7. Re-extract content.xml for examination.

It would be wonderful if the step 5-7 be repalced with a simple revert
of test.odt:content.xml.

In GNU Emacs 24.0.95.1 (i386-mingw-nt5.1.2600)
 of 2012-04-03 on MARVIN
Windowing system distributor `Microsoft Corp.', version 5.1.2600
Configured using:
 `configure --with-gcc (4.6) --no-opt --enable-checking --cflags
 -ID:/devel/emacs/libs/libXpm-3.5.8/include
 -ID:/devel/emacs/libs/libXpm-3.5.8/src
 -ID:/devel/emacs/libs/libpng-dev_1.4.3-1/include
 -ID:/devel/emacs/libs/zlib-dev_1.2.5-2/include
 -ID:/devel/emacs/libs/giflib-4.1.4-1/include
 -ID:/devel/emacs/libs/jpeg-6b-4/include
 -ID:/devel/emacs/libs/tiff-3.8.2-1/include
 -ID:/devel/emacs/libs/gnutls-3.0.9/include'

bug#11169: 24.0.95; (Wish/FR): Revert an archive member

[Stefan Monnier]

> It would be quite useful if there is a way to revert an archive
> member.  It could work something like this:
> 1. Revert a buffer
> 2. Check if the buffer is from an archive (See `archive-superior-buffer')
> 3. Check if the parent archive has changed and revert the parent archive
> 4. Refresh this and possibly other open archive members

A first step would be to make it work in the following case:
1- the user does M-x revert-buffer in the archive buffer.
2- the user does M-x revert-buffer in the archive member buffer.

One way to get this result (not necessarily the simplest, but one that
would make a lot of sense in general) is to extend archive-mode with
a file-name-handler.
E.g. if you open a /foo/bar.zip, you could access its members with C-x
C-f /foo/bar.zip#/toto.c.


        Stefan

bug#11169: 24.0.95; (Wish/FR): Revert an archive member

[Jambunathan K]

OP here.  Closing it.