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

From: Jambunathan K
Subject: bug#11169: 24.0.95; (Wish/FR): Revert an archive member
Date: Wed, 04 Apr 2012 17:19:48 +0530

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 (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

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