okay, install another editor. I suggest ed. It's the standard editor. >:)

I don't think ed is optional on omnios?

It's XPG4 and XPG6

Yes, ed(1) is part of SUNWcs (core system) - it's a POSIX requirement

The extra repository has other editor choices, probably enough to satisfy most people :) nano, joe, emacs.. neovim coming soon

The ed comment was a joke :p