early return, avoid numbers, tag decide time

[Artoria2e5]

• Return early to avoid indenting. This is not lisp.
• Since all custom tags come from x, why don't we generate custom tags later?
• Kill the numbers.

[Artoria2e5]

Given that you have abandoned this project, I am closing this PR. You really should say that in your README.

[Artoria2e5]

Oh, you don't have a README? In the repo description then.