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fn main() {
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let a = "a";
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let b = "b";
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println!("{a} {b} {} {} {c} {}", c = "c");
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//~^ ERROR: 3 positional arguments in format string, but there is 1 argument
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let n = 1;
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println!("{a:.n$} {b:.*}");
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//~^ ERROR: 1 positional argument in format string, but no arguments were given
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}
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