[rytill]

You can’t just claim a letter and expect no one else to ever make a thing that is named that letter. Except C.

[itake]

From a trademark perspective, that is exactly how it works: https://www.uspto.gov/trademarks/laws/dates-use-1

From a "I can only have one cli alias to q" perspective, then I am sticking with SQL "q" cmd, b/c its more useful and I have been using it longer than this one.

[WhyNotHugo]

I use a lot of single-letter aliases, so I'd really prefer applications avoid using single-letter names, and reverse that specifically for user-local aliases.