macros: fix skipping generics on #[tokio::main] #2177
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When using #[tokio::main] on a function with generics, the generics are skipped. Simply using #vis #sig instead of #vis fn #name(#inputs) #ret fixes the problem. I also included a simple test. Fixes #2176
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Motivation
Fixes #2176.
Solution
The solution is pretty straightforward:
Instead of
#vis fn #name(#inputs) #ret {just writing#vis #sigworks magic.I also included a test.