[Pmwiki-users] PHP diff engine now in cookbook

[Nils Knappmeier]

Hello fellows that have to run your PmWiki in PHP Safe Mode,

today I was working on a diff algorithm that also worked for bigger 
files and I finished it up.
Since Pm provided the hooks in integrate it without patching pmwiki.php 
and since the algorithm seems to work pretty well now,
I put it into the cookbook.

The module should be compatible with the GNU diff and GNU patch, so you 
should be able to migrate without data loss.
However, there is no reason to do that as long as GNU diff and GNU patch 
work fine on your system. I advise you _not_ to migrate unless you have 
to because:

1) If there is a bug, in my functions, then you might lose your Page 
History.
2) GNU diff probably gives better result. I haven't proven yet, that my 
algorithm computes the optimal diff (it probably doesn't in all cases)

The testing ground still exists at 
http://www.fachschaft.informatik.tu-darmstadt.de, which also contains a 
brief description of the algorithm.
In addition, the engine is running on my own homepage at 
http://www.knappi.org
The cookbook recipe can be found at 
http://www.pmichaud.com/wiki/Cookbook/PHPDiffEngine.

Tell me if you have any problems...

Nils