tests/ui/macros/issue-98466.rs

   1 // check-pass
   2 // run-rustfix
   3
   4 fn main() {
   5     let mut _x: usize;
   6     _x = 1;
   7     println!("_x is {}", _x = 5);
   8     //~^ WARNING named argument `_x` is not used by name [named_arguments_used_positionally]
   9     //~| HELP use the named argument by name to avoid ambiguity
  10     println!("_x is {}", y = _x);
  11     //~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
  12     //~| HELP use the named argument by name to avoid ambiguity
  13     println!("first positional arg {}, second positional arg {}, _x is {}", 1, 2, y = _x);
  14     //~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
  15     //~| HELP use the named argument by name to avoid ambiguity
  16
  17     let mut _x: usize;
  18     _x = 1;
  19     let _f = format!("_x is {}", _x = 5);
  20     //~^ WARNING named argument `_x` is not used by name [named_arguments_used_positionally]
  21     //~| HELP use the named argument by name to avoid ambiguity
  22     let _f = format!("_x is {}", y = _x);
  23     //~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
  24     //~| HELP use the named argument by name to avoid ambiguity
  25     let _f = format!("first positional arg {}, second positional arg {}, _x is {}", 1, 2, y = _x);
  26     //~^ WARNING named argument `y` is not used by name [named_arguments_used_positionally]
  27     //~| HELP use the named argument by name to avoid ambiguity
  28
  29     let s = "0.009";
  30     // Confirm that named arguments used in formatting are correctly considered.
  31     println!(".{:0<width$}", s, width = _x);
  32
  33     let region = "abc";
  34     let width = 8;
  35     let ls = "abcde";
  36     let full = "abcde";
  37     // Confirm that named arguments used in formatting are correctly considered.
  38     println!(
  39         "| {r:rw$?} | {ui:4?} | {v}",
  40         r = region,
  41         rw = width,
  42         ui = ls,
  43         v = full,
  44     );
  45
  46     // Confirm that named arguments used in formatting are correctly considered.
  47     println!("{:.a$}", "aaaaaaaaaaaaaaaaaa", a = 4);
  48
  49     // Confirm that named arguments used in formatting are correctly considered.
  50     println!("{:._a$}", "aaaaaaaaaaaaaaaaaa", _a = 4);
  51 }