We prefer patches which are generated against the latest "trunk" in subversion. By checking out a copy of the source and making changes to your local copy, you can create a patch by simply typing svn diff, (or git diff -a, if it's in git) from the root directory of your project. This command will give you context, as well as version numbers for all differences between your versions and the versions you checked out from the repository. Redirect this command to a file and attach it with proper documentation.
If not using subversion, please include what version of jEdit your patch is made against.
We would also appreciate: