You will find more infomation in our wiki <http://padre.perlide.org/trac/wiki/Features/EditPatch/> pages.
A very simplistic tool, only works on open saved files, in the Padre editor.
Patch a single file, in the editor with a patch/diff file that is also open.
Diff between two open files, the resulting patch file will be in Unified form.
Diff a single file to svn, only display files that are part of an SVN already, the resulting patch file will be in Unified form.
All results will be a new Tab.