I am working on a Thunderbird addon which has js, html, css files and a manifest.json.
All files open in a tab, the json opens a new instance. Why? How can I change that? It is part of the project, so it belongs into a tab. I open the files by doubleclicking in the file list tree on the left. thanks, Klaus -- <https://forum.pspad.com/read.php?2,73145,73145> PSPad freeware editor https://www.pspad.com
