put the operators in backticks in the diagnostics

Author: ada4a

clippy_lints/src/integer_division_remainder_used.rs

@@ -43,7 +43,7 @@ impl LateLintPass<'_> for IntegerDivisionRemainderUsed {
                 cx,
                 INTEGER_DIVISION_REMAINDER_USED,
                 expr.span.source_callsite(),
-                format!("use of {} has been disallowed in this context", op.node.as_str()),
+                format!("use of `{}` has been disallowed in this context", op.node.as_str()),
             );
         }
     }

tests/ui/integer_division_remainder_used.stderr

@@ -1,4 +1,4 @@
-error: use of / has been disallowed in this context
+error: use of `/` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:10:14
    |
 LL |         Self(self.0 / rhs.0)
@@ -7,49 +7,49 @@ LL |         Self(self.0 / rhs.0)
    = note: `-D clippy::integer-division-remainder-used` implied by `-D warnings`
    = help: to override `-D warnings` add `#[allow(clippy::integer_division_remainder_used)]`
 
-error: use of % has been disallowed in this context
+error: use of `%` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:18:14
    |
 LL |         Self(self.0 % rhs.0)
    |              ^^^^^^^^^^^^^^
 
-error: use of / has been disallowed in this context
+error: use of `/` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:27:13
    |
 LL |     let c = a / b;
    |             ^^^^^
 
-error: use of % has been disallowed in this context
+error: use of `%` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:29:13
    |
 LL |     let d = a % b;
    |             ^^^^^
 
-error: use of / has been disallowed in this context
+error: use of `/` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:31:13
    |
 LL |     let e = &a / b;
    |             ^^^^^^
 
-error: use of % has been disallowed in this context
+error: use of `%` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:33:13
    |
 LL |     let f = a % &b;
    |             ^^^^^^
 
-error: use of / has been disallowed in this context
+error: use of `/` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:35:13
    |
 LL |     let g = &a / &b;
    |             ^^^^^^^
 
-error: use of % has been disallowed in this context
+error: use of `%` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:37:13
    |
 LL |     let h = &10 % b;
    |             ^^^^^^^
 
-error: use of / has been disallowed in this context
+error: use of `/` has been disallowed in this context
   --> tests/ui/integer_division_remainder_used.rs:39:13
    |
 LL |     let i = a / &4;