Furthermore, the differences between the revisions are shown as close as possible. If necessary, this means that different words are marked instead of whole lines or even paragraphs.
The differences may be shown in two formats, either side-by-side or as an interwoven output of the old and new revision (like it is done in Word or OpenOffice):
The appearance can be affected by templates and skins.
https://wiki.in.tum.de/bin/diff/Web/Topic?parametersfrom your browser
comparesidebyside.skin.tmpl) for the side-by-side format, and
compareinterweave.skin.tmpl) for the interwoven format. The default templates use a common
complare.skin.tmpl) for things used by both.
The templates themselves are broken into 7 parts:
template for start of page %REPEAT% template for unchanged section which is not printed according to context %REPEAT% template for unchanged section which is printed %REPEAT% template for changed section %REPEAT% template for added section %REPEAT% template for deleted section %REPEAT% template for end of page
All empty templates for a section default to their predecessor. (E.g. if you do not specify a template for a deleted section, it defaults to the template for an added section, which in turn may default to the template for a changed section).In the templates for a section,
%TEXT1%is replaced by the text of the old revision and
%TEXT2%is replaced by the text of the new revision. In interwoven output, only
%TEXT1%is used. Examples for templates can be found in the default template files from the distribution (
The differences in the two revisions are marked with the help of CSS style classes, whose appearance should be defined in the templates.
The following classes are used:
craCompareChange1are defined with a light red background and stroken out text, and
craCompareChange2are defined with a light green background.
You do not need to install anything in the browser to use this extension. The following instructions are for the administrator who installs the extension on the server.Open configure, and open the "Extensions" section. "Extensions Operation and Maintenance" Tab → "Install, Update or Remove extensions" Tab. Click the "Search for Extensions" button. Enter part of the extension name or description and press search. Select the desired extension(s) and click install. If an extension is already installed, it will not show up in the search results. You can also install from the shell by running the extension installer as the web server user: (Be sure to run as the webserver user, not as root!)
cd /path/to/foswiki perl tools/extension_installer <NameOfExtension> installIf you have any problems, or if the extension isn't available in
configure, then you can still install manually from the command-line. See https://foswiki.org/Support/ManuallyInstallingExtensions for more help.
https://wiki.in.tum.de/bin/diff/Web/Topicwith some existing topic. (Try for instance CompareRevisionsAddOnDemoTopic and compare your output with above screenshots).
|Copyright ©:||2006, JChristophFuchs; 2008-2015 Kenneth Lavrsen and Foswiki Contributors|
|04 May 2017 (1.115)|| Foswikitask:Item14366:
|14 Jun 2015 (1.114)||Foswikitask:Item13423: Perl 5.22 deprecations. Foswikitask:Item13378: Support utf-8 internally.|
|18 Dec 2014 (1.113)|| Foswikitask:Item13068: Remove the CompareRevisionsAddOn demo, don't ship revision history
Foswikitask:Item11737: Change hardcoded Main to Main
Foswikitask:Item12875: Implement controls on access to topic History
|01 May 2014 (1.112)||Foswikitask:Item12407: Don't decode entities during comparson. Convert to simple decimal version.|
|10 Feb 2014||Foswikitask:Item12741: Formatting parameters not passed on the referenced scripts|
|23 Oct 2013 (1.1.11)||Foswikitask:Item12423: fix double encoding in header on UTF-8 sites|
|28 Feb 2013 (1.1.10)||Foswikitask:Item12408: use correct template names in docs|
|31 Jan 2013 (1.1.9)||Foswikitask:Item12337: Remove undocumented dependency on CPAN:HTML::TreeBuilder >= 4.0|
|28 Nov 2012 (1.1.8)|| Foswikitask:Item11267: Convert to perl version strings,
Foswikitask:Item11755: Compare breaks characterset encoding.
Foswikitask:Item11930: Read settings from SitePreferences
|06 Apr 2012 (1.1.7)||Foswikitask:Item11445: References to Sandbos should use %SANDBOXWEB% macro. Release with Foswiki 1.1.5.|
|05 Dec 2011 (1.1.6)||Release with Foswiki 1.1.4 - minor code and documentation cleanup.|
|28 May 2011 (1.1.6)|| Foswikitask:Item10803 - Fix invalid Foswiki configuration affecting ApacheLogin users introduced in
|17 May 2011 (1.1.5)||Foswikitask:Item10677 - Speed optimization by avoiding doing pointless lookup for settings in plugin topic|
|30 Apr 2011 (1.1.4)|| Foswikitask:Item10566 - Add
- Switch to x.y.z version numbering
- Moved dependency list from documentation into DEPENDENCIES manifest - Modernize system topic for BuildContrib
|10 Apr 2011|| Foswikitask:Item10401 - Call logEvent in compare
Foswikitask:Item10402 - Don't use obsolete template for missing web/topic.
Version shipping with 1.1.3
|21 Oct 2010||Added dependency of HTML::Tree to installer and to core MANIFEST so you see it listed in configure|
|04 Oct 2010||Foswikitask:Item9774 - Add CompareRevisionsAddOn.pm stub module to provide Version & Release strings|
|31 Jul 2010||Paul Harvey: Foswikitask:Item9415 - Documentation updates|
|19 Sep 2009||Kenneth Lavrsen: Expert settings in plugins makes configure fail to save. Using the hidden (H) setting instead which is much better anyway as this is not a setting to be altered by a user.|
|18 Sep 2009||Kenneth Lavrsen: Expert settings in plugins makes configure fail to save. Settings therefore un-experted again|
|12 Sep 2009||Kenneth Lavrsen: Fixed problem with tables always showing up as changed even when they were not|
|09 Aug 2009||Plugin is now a default plugin shipped with Foswiki. It will later have its function integrated in core in a future Foswiki version so its life as default plugin is temporary. Changed its switchboard setting to EXPERT so it is hidden in configure. You should never need to change this anyway.|
|22 Mar 2009||Gilmar Santos Jr: ported to FSA architecture (Foswiki:Tasks/Item1352)|
|09 Jan 2009||Gilmar Santos Jr: fixed ambigous print (Foswiki:Tasks.Item716)|
|08 Dec 2008||Kenneth Lavrsen: Changed the author to myself. JChristophFuchs is the original author but announced in 2006 that he no longer maintains this plugin. So now I officially take the task as maintainer. Plugin is changed to Foswiki namespace and tested and works under Foswiki 1.0.0. Policy is now feel free to modify but please do not break compatibility.|
|07 Nov 2007||Arthur Clemens: Updated for TWiki 4.2|
|09 Apr 2006||Updated for new PatternSkin in TWikiRelease04x00x02|
|26 Feb 2006||Updated for TWiki 4|
|02 Mar 2005||Corrected bug concerning uninitialized elements|
|03 Feb 2005||Removed blank paragraphs before comparing|
|20 Jan 2005||Initial version|
|Release||08 Apr 2017|
|Copyright||Foswiki Contributors, 2008-2015 All Rights Reserved|
|License||GPL (GNU General Public License)|