nimforum mirror - calling conventions differs unexpectedly

Here I am with a proc:

proc cmd_exit(input: string): string =
    cmdhdl.exit()
    return "exit"

According to the docs / manual, proc s without any calling conventions will default to {.nimcall.} . Proc types are of {.closure.} . However,

a procedure of the calling convention nimcall can be passed to a parameter that expects a proc of the calling convention closure .

Well I've no idea why the calling convention of my proc has been turned to something else unexpectedly...

I thought the linter has gone wrong. It isn't. it doesn't compile.

Can anyone explain why the calling convention of the proc turn to something else?

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