There's pretty cool, yet a tiny bit complicated way of doing this using babashka: So you're gonna need to run shell-command-on-region with a prefix C-u M-| shell-command-on-region sends marked region to an external command, when called with a prefix, it replaces the selected text in the buffer with the result of the command. So you do exactly this: C-u M-| bb '(into (sorted-map) *input*)' RET and it does it. Now, if you do this fairly often, next time you can call C-u M-|, you can press C-r and find your babashka call.