At the time (and it was a few years ago), I found BBEdit to be rather amazing - or at least equally a product raised with care in its ecosystem over decades of use.
It runs with difficulty on Wine. Example: I have localization for Japanese fonts on my Linux system but it wasn't showing up in Notepad++. I love Notepad++, but that was the final straw. I have switched to Geany which is missing many features from Notepad++, but will display the fonts correctly. I'm sure there's a way to get the fonts loaded up through Wine, but I've given up.