How to open Jedit4 documents with Jedit X by double-clicking?
Using Finder, you can change the opening application freely. 1) Select a Jedit4 document file in the Finder. 2) Choose the menu File > Get Info. An Info panel for the document will appear. 3) Choose Jedit X for “Open with” application at the middle of the panel. 4) Click the button “Change All”, then all Jedit4 documents will be opened with Jedit X.