It's 26 years for me. Emacs is I believe the oldest software I still use. I started on an SGI Irix in 2000. I used it also on HP-UX, Solaris, Windows, MacOS, and of course all varieties of Linux
> Emacs cursor movement keystrokes are quite widely supported elsewhere too which use GNU readline or implement at least subset themselves.
And many keystrokes work on MacOS, too. That was a pleasant surprise when I got a Mac laptop for work.
It's 26 years for me. Emacs is I believe the oldest software I still use. I started on an SGI Irix in 2000. I used it also on HP-UX, Solaris, Windows, MacOS, and of course all varieties of Linux
> Emacs cursor movement keystrokes are quite widely supported elsewhere too which use GNU readline or implement at least subset themselves.
And many keystrokes work on MacOS, too. That was a pleasant surprise when I got a Mac laptop for work.