Ruby_runner_nvim

This is a non-technical explanation of how a code-runner mapping should work with Nvim. No code either.

• map F9 (normal mode)
• open a split (keep reference)
• run the code in the split
• in split buffer.. define two new mappings:
  • <esc> (terminal mode)
  • <esc> (normal mode)
• both escape-mappings call ‘cleanup’.. that closes the split and destroys the buffer.

This allows you to close the split regardless on if the execution of the script succeeded or failed.

• You can check that the file is a ruby file before running the script.
• You can autosave the script before running (if you want).

Now:

F9 runs a ruby script and shows the output in a split below (output or error).
esc will close the split; destroy the extra buffer and return to your code.