plan9port VS edwood

Acme has a handful of keybindings, like the usual ^A, ^E for navigation, ^Z for undo, etc. Plugging in new ones is a few lines of code, for example my ^S for Putall (saving all windows):

https://github.com/dexen/plan9port/commit/78324a4666c4b5e0bd...

Most of keybindings you might want to add are handled by Acme's "commands" - like Edit. If you repeat them any often, it's easy and straightforward to connect the keybinding to the command in code. Alternatively, to avoid going into C, write a shell script with ready-made command; Acme is well prepared to be managed through shell scripts. The shell scripts have full access to Acme's Windows (open files, directories, scratchpads etc), including ability to edit content, open new ones, interpret right-clicks in new ways, etc.

esc = select the last "stuff" just typed

The fact you can create your own "buttons" that do basically anything is pretty nice, but you REALLY want a 3 button pointing device to use it. It also doesn't care about the programming language you use to create such a button, but you will work with the filesystem metaphor provided by Acme itself to get things done.

I find the mouse interface is extremely fast, and when you couple it with the power of the plumber in Plan 9, it's a reasonably good way to navigate around a complex workflow.

It's also a reasonably small environment in terms of lines of code. The Go version (Edwood) is pretty good too! https://github.com/rjkroege/edwood