Add compile error when using comment and doctype tags within the view!
macro
#2355
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Discussed in #2338.
Preview of the error messages:
![image](https://private-user-images.githubusercontent.com/51510921/307155972-2aa20328-a74d-4ad8-b7b0-b738ef36628c.png?jwt=eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.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.b5Pwxd2Ijzd0_KnRme9eeJtySHr8VtSNbcNE3VfLpq8)
The first commit contains just style changes (using
proc_macro_error::abort!
everywhere instead of justabort!
, to be consistent withproc_macro_error::emit_error!
), so it can be reverted if desired.