Open file in iTerm vim/neovim for MacOS High Sierra

TerminalVim.scpt

-- TerminalVim.app
-- This creates a shim Application that will enable you to open files from the Finder in vim using iTerm

-- To use this script: 
-- 1. Open Automator and create a new Application
-- 2. Add the "Run Applescript" action
-- 3. Paste this script into the Run Applescript section
-- 4. Save the application as TerminalVim.app in your Applications folder
-- 5. In the Finder, right click on a file and select "Open With". In that window you can set TerminalVim as a default

on run {input, parameters}
	tell application "iTerm"
		activate
		if (count of windows) = 0 then
			create window with default profile
		end if
		tell current window
			create tab with default profile
			tell current session
				-- if you're using vim, change 'nvim' to 'vim' below
				write text ("vim " & quote & POSIX path of input & quote & "; exit")
			end tell
		end tell
	end tell
end run