Add backticks in appropriate places

Author: varkor

src/librustc_lint/builtin.rs

@@ -1959,21 +1959,24 @@ impl<'a, 'tcx> LateLintPass<'a, 'tcx> for InvalidValue {
                         // return `Bound::Excluded`.  (And we have tests checking that we
                         // handle the attribute correctly.)
                         (Bound::Included(lo), _) if lo > 0 => {
-                            return Some((format!("{} must be non-null", ty), None));
+                            return Some((format!("`{}` must be non-null", ty), None));
                         }
                         (Bound::Included(_), _) | (_, Bound::Included(_))
                             if init == InitKind::Uninit =>
                         {
                             return Some((
-                                format!("{} must be initialized inside its custom valid range", ty),
+                                format!(
+                                    "`{}` must be initialized inside its custom valid range",
+                                    ty,
+                                ),
                                 None,
                             ));
                         }
                         _ => {}
                     }
                     // Now, recurse.
                     match adt_def.variants.len() {
-                        0 => Some((format!("0-variant enums have no valid value"), None)),
+                        0 => Some((format!("enums with no variants have no valid value"), None)),
                         1 => {
                             // Struct, or enum with exactly one variant.
                             // Proceed recursively, check all fields.

src/librustc_parse/parser/attr.rs

@@ -236,8 +236,8 @@ impl<'a> Parser<'a> {
             self.struct_span_err(lit.span, msg)
                 .help(
                     "instead of using a suffixed literal \
-                                    (1u8, 1.0f32, etc.), use an unsuffixed version \
-                                    (1, 1.0, etc.).",
+                                    (`1u8`, `1.0f32`, etc.), use an unsuffixed version \
+                                    (`1`, `1.0`, etc.)",
                 )
                 .emit()
         }

src/librustc_resolve/build_reduced_graph.rs

@@ -963,7 +963,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
                             .session
                             .struct_span_err(
                                 attr.span,
-                                "`macro_use` is not supported on `extern crate self`",
+                                "`#[macro_use]` is not supported on `extern crate self`",
                             )
                             .emit();
                     }
@@ -1054,7 +1054,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
     fn contains_macro_use(&mut self, attrs: &[ast::Attribute]) -> bool {
         for attr in attrs {
             if attr.check_name(sym::macro_escape) {
-                let msg = "macro_escape is a deprecated synonym for macro_use";
+                let msg = "`#[macro_escape]` is a deprecated synonym for `#[macro_use]`";
                 let mut err = self.r.session.struct_span_warn(attr.span, msg);
                 if let ast::AttrStyle::Inner = attr.style {
                     err.help("consider an outer attribute, `#[macro_use]` mod ...").emit();
@@ -1066,7 +1066,7 @@ impl<'a, 'b> BuildReducedGraphVisitor<'a, 'b> {
             }
 
             if !attr.is_word() {
-                self.r.session.span_err(attr.span, "arguments to macro_use are not allowed here");
+                self.r.session.span_err(attr.span, "arguments to `macro_use` are not allowed here");
             }
             return true;
         }

src/librustc_typeck/check/method/suggest.rs

@@ -479,7 +479,7 @@ impl<'a, 'tcx> FnCtxt<'a, 'tcx> {
                     macro_rules! report_function {
                         ($span:expr, $name:expr) => {
                             err.note(&format!(
-                                "{} is a function, perhaps you wish to call it",
+                                "`{}` is a function, perhaps you wish to call it",
                                 $name
                             ));
                         };

src/test/ui/consts/const-eval/validate_uninhabited_zsts.stderr

@@ -45,7 +45,7 @@ LL | const BAR: [Empty; 3] = [unsafe { std::mem::transmute(()) }; 3];
    |                                   this code causes undefined behavior when executed
    |                                   help: use `MaybeUninit<T>` instead, and only call `assume_init` after initialization is done
    |
-   = note: 0-variant enums have no valid value
+   = note: enums with no variants have no valid value
 
 error: aborting due to previous error
 

src/test/ui/deprecation/deprecated-macro_escape-inner.rs

@@ -1,7 +1,7 @@
 // run-pass
 
 mod foo {
-    #![macro_escape] //~ WARNING macro_escape is a deprecated synonym for macro_use
+    #![macro_escape] //~ WARN `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
 }
 
 fn main() {

src/test/ui/deprecation/deprecated-macro_escape-inner.stderr

@@ -1,4 +1,4 @@
-warning: macro_escape is a deprecated synonym for macro_use
+warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
   --> $DIR/deprecated-macro_escape-inner.rs:4:5
    |
 LL |     #![macro_escape]

src/test/ui/deprecation/deprecated-macro_escape.rs

@@ -1,8 +1,6 @@
 // run-pass
 
-#[macro_escape] //~ WARNING macro_escape is a deprecated synonym for macro_use
-mod foo {
-}
+#[macro_escape] //~ WARNING `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
+mod foo {}
 
-fn main() {
-}
+fn main() {}

src/test/ui/deprecation/deprecated-macro_escape.stderr

@@ -1,4 +1,4 @@
-warning: macro_escape is a deprecated synonym for macro_use
+warning: `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
   --> $DIR/deprecated-macro_escape.rs:3:1
    |
 LL | #[macro_escape]

src/test/ui/feature-gate/issue-43106-gating-of-builtin-attrs.rs

@@ -464,10 +464,10 @@ mod reexport_test_harness_main {
 
 // Cannot feed "2700" to `#[macro_escape]` without signaling an error.
 #[macro_escape]
-//~^ WARN macro_escape is a deprecated synonym for macro_use
+//~^ WARN `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
 mod macro_escape {
     mod inner { #![macro_escape] }
-    //~^ WARN macro_escape is a deprecated synonym for macro_use
+    //~^ WARN `#[macro_escape]` is a deprecated synonym for `#[macro_use]`
 
     #[macro_escape] fn f() { }
     //~^ WARN unused attribute