Leslie Turriff composed on 2018-02-22 23:28 (UTC-0600):
I'm currently using X2 - The Programmer's Editor, but X2 is closed source, (it's a clone of the OS/2 text editor), and its support has fallen off badly recently; also, the Unix version has a lot of niusance glitches. Thank you very much for pointing this out.
And thank you! OS/2's editor is the only GUI editor I ever liked.
On openSUSE 42.3 KDE3, its installed size is 65KB, but required 3.5MB of previously unneeded deps. :-p