r? @alexcrichton

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r? @Eh2406 Since @Eh2406 are involved in previous discussion.

Also cc @ehuss as the original author of --name suggestion.

I feel like suggesting --name is a little unusual here. The common case doesn't seem likely to be "I want to create an unusual directory name but name the project something different"; that's not a pattern we should actively encourage. The common case is likely to be "Oh, I should use a different directory name". Steering people towards --name doesn't seem like the right answer.

How does something like "if you need the directory name to not match the project name consider the --name flag" sound?

@ehuss how does this seam to you?

Just rephrase as "If you need a crate name to not match the directory name, consider using --name flag." So the whole message would be something like

[ERROR] invalid character `¼` in crate name: `a¼`, characters must be Unicode XID characters (numbers, `-`, `_`, or most letters)
If you need a crate name to not match the directory name, consider using --name flag.

I did not choose the suggestion approach mentioned in this comment because in real world the situation is more complex and may lead to suggest another invalid name.

@ehuss how does this seam to you?

The most recent update looks good to me!

Sounds like the team is on board!
Thank you @weihanglo!
@bors r+

📌 Commit c6fcb0e has been approved by Eh2406

⌛ Testing commit c6fcb0e with merge 2c10f26...

☀️ Test successful - checks-actions
Approved by: Eh2406
Pushing 2c10f26 to master...