Ileum is a zsh plugin that catches all commands starting with a colon and runs them in the parent neovim instance. To install Ileum, clone this repository somewhere on your disk and add source /path/to/ileum.sh to your .zshrc.
Example usage:
Print the address of the parent neovim instance:
:echo '$NVIM_LISTEN_ADDRESS'
Pipe the content of a command to a vertically split buffer:
grep mypattern /path/to/file | :vnew
Close the terminal buffer:
:q