That's great, I've struggled with this problem a lot. To double-check, this essentially allows you to specify a default app that is being opened when you click on a file via Finder or via terminal's `open` program, correct? I haven't seen this exact clarification in README

Yep! Just added a clarification in the README.

After running `infat set IINA mov`: https://jezq5q9mfh.ufs.sh/f/Ii8qBn67qEOu1ZUKDXSn3BIE8fDuiWay...