On my Mac, I would like to be able to right-click on a file and then select "open with.." emacs.
How can I accomplish that? (On my Mac, I have emacs in /usr/bin)
Download the most recent version of Aquamacs which is "standard" Emacs with a lot of essential OS X customization.
You can also achieve the result you want with an actual terminal window and the command-line
Here, from the left, drag Run AppleScript to the right, and paste the following:
Save this anywhere you want, as an