On the command line, I can type edit <folder/file name> and it will open in TextWrangler, which I haven't used in ages. I'm not sure how the edit binary got there — I use oh-my-zsh, potentially relevant. I wanted to change subl to edit (nicer to type) and discovered it already existed.
I uninstalled TextWrangler and now I get the error
edit: error: -10814
LaunchServices could not locate your copy of TextWrangler.
I've been looking around for how to modify the LaunchServices database and I've rebuilt it but I still get the error. Running which edit gives me /usr/local/bin/edit fwiw.
What controls this association and how can I switch it to Sublime Text?
If you were to run ls -al /usr/local/bin/edit you'd see this:
lrwxr-xr-x 1 root wheel 52 Apr 15 2012 /usr/local/bin/edit -> /Applications/TextWrangler.app/Contents/Helpers/edit
Therefore, it looks like edit is a built-in command-line program for TextWrangler, just like subl is for Sublime, or mate is for TextMate. Of course, there's nothing stopping you from deleting the symlink, then making a new one pointing to subl if you want to.