rust-lang · bors · Jan 17, 2023 · Jan 17, 2023 · Jan 17, 2023
diff --git a/compiler/rustc_resolve/src/diagnostics.rs b/compiler/rustc_resolve/src/diagnostics.rs
@@ -5,10 +5,10 @@ use rustc_ast::visit::{self, Visitor};
 use rustc_ast::{self as ast, Crate, ItemKind, ModKind, NodeId, Path, CRATE_NODE_ID};
 use rustc_ast_pretty::pprust;
 use rustc_data_structures::fx::FxHashSet;
-use rustc_errors::struct_span_err;
 use rustc_errors::{
     pluralize, Applicability, Diagnostic, DiagnosticBuilder, ErrorGuaranteed, MultiSpan,
 };
+use rustc_errors::{struct_span_err, SuggestionStyle};
 use rustc_feature::BUILTIN_ATTRIBUTES;
 use rustc_hir::def::Namespace::{self, *};
 use rustc_hir::def::{self, CtorKind, CtorOf, DefKind, NonMacroAttrKind, PerNS};
@@ -2418,7 +2418,7 @@ fn show_candidates(
         }
 
         if let Some(span) = use_placement_span {
-            let add_use = match mode {
+            let (add_use, trailing) = match mode {
                 DiagnosticMode::Pattern => {
                     err.span_suggestions(
                         span,
@@ -2428,21 +2428,23 @@ fn show_candidates(
                     );
                     return;
                 }
-                DiagnosticMode::Import => "",
-                DiagnosticMode::Normal => "use ",
+                DiagnosticMode::Import => ("", ""),
+                DiagnosticMode::Normal => ("use ", ";\n"),
             };
             for candidate in &mut accessible_path_strings {
                 // produce an additional newline to separate the new use statement
                 // from the directly following item.
-                let additional_newline = if let FoundUse::Yes = found_use { "" } else { "\n" };
-                candidate.0 = format!("{add_use}{}{append};\n{additional_newline}", &candidate.0);
+                let additional_newline = if let FoundUse::No = found_use && let DiagnosticMode::Normal = mode { "\n" } else { "" };
+                candidate.0 =
+                    format!("{add_use}{}{append}{trailing}{additional_newline}", &candidate.0);
             }
 
-            err.span_suggestions(
+            err.span_suggestions_with_style(
                 span,
                 &msg,
                 accessible_path_strings.into_iter().map(|a| a.0),
                 Applicability::MaybeIncorrect,
+                SuggestionStyle::ShowAlways,
             );
             if let [first, .., last] = &path[..] {
                 let sp = first.ident.span.until(last.ident.span);
@@ -2463,7 +2465,7 @@ fn show_candidates(
                 msg.push_str(&candidate.0);
             }
 
-            err.note(&msg);
+            err.help(&msg);
         }
     } else if !matches!(mode, DiagnosticMode::Import) {
         assert!(!inaccessible_path_strings.is_empty());

diff --git a/tests/ui/empty/empty-macro-use.stderr b/tests/ui/empty/empty-macro-use.stderr
@@ -4,7 +4,7 @@ error: cannot find macro `macro_two` in this scope
 LL |     macro_two!();
    |     ^^^^^^^^^
    |
-   = note: consider importing this macro:
+   = help: consider importing this macro:
            two_macros::macro_two
 
 error: aborting due to previous error

diff --git a/tests/ui/extenv/issue-55897.stderr b/tests/ui/extenv/issue-55897.stderr
@@ -30,7 +30,7 @@ LL |     use env;
 help: consider importing this module instead
    |
 LL |     use std::env;
-   |         ~~~~~~~~~
+   |         ~~~~~~~~
 
 error: cannot determine resolution for the macro `env`
   --> $DIR/issue-55897.rs:6:22

diff --git a/tests/ui/hygiene/globs.stderr b/tests/ui/hygiene/globs.stderr
@@ -51,7 +51,7 @@ LL | n!(f);
 LL |         n!(f);
    |            ^ not found in this scope
    |
-   = note: consider importing this function:
+   = help: consider importing this function:
            foo::f
    = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -64,7 +64,7 @@ LL | n!(f);
 LL |                 f
    |                 ^ not found in this scope
    |
-   = note: consider importing this function:
+   = help: consider importing this function:
            foo::f
    = note: this error originates in the macro `n` (in Nightly builds, run with -Z macro-backtrace for more info)
 

diff --git a/tests/ui/hygiene/no_implicit_prelude-2018.stderr b/tests/ui/hygiene/no_implicit_prelude-2018.stderr
@@ -4,7 +4,7 @@ error: cannot find macro `print` in this scope
 LL |         print!();
    |         ^^^^^
    |
-   = note: consider importing this macro:
+   = help: consider importing this macro:
            std::print
 
 error: aborting due to previous error

diff --git a/tests/ui/imports/bad-import-in-nested.stderr b/tests/ui/imports/bad-import-in-nested.stderr
@@ -4,7 +4,7 @@ error[E0432]: unresolved import `super::super::C::D::AA`
 LL |         use super::{super::C::D::AA, AA as _};
    |                     ^^^^^^^^^^^^^^^ no `AA` in `C::D`
    |
-   = note: consider importing this type alias instead:
+   = help: consider importing this type alias instead:
            crate::A::AA
 
 error[E0432]: unresolved import `crate::C::AA`
@@ -13,7 +13,7 @@ error[E0432]: unresolved import `crate::C::AA`
 LL |     use crate::C::{self, AA};
    |                          ^^ no `AA` in `C`
    |
-   = note: consider importing this type alias instead:
+   = help: consider importing this type alias instead:
            crate::A::AA
 
 error[E0432]: unresolved import `crate::C::BB`
@@ -22,7 +22,7 @@ error[E0432]: unresolved import `crate::C::BB`
 LL |     use crate::{A, C::BB};
    |                    ^^^^^ no `BB` in `C`
    |
-   = note: consider importing this type alias instead:
+   = help: consider importing this type alias instead:
            crate::A::BB
 
 error: aborting due to 3 previous errors

diff --git a/tests/ui/imports/bad-import-with-rename.stderr b/tests/ui/imports/bad-import-with-rename.stderr
@@ -7,7 +7,7 @@ LL |     use crate::D::B as _;
 help: consider importing this type alias instead
    |
 LL |     use A::B as _;
-   |         ~~~~~~~~~~
+   |         ~~~~~~~~~
 
 error[E0432]: unresolved import `crate::D::B2`
   --> $DIR/bad-import-with-rename.rs:10:9
@@ -18,7 +18,7 @@ LL |     use crate::D::B2;
 help: consider importing this type alias instead
    |
 LL |     use A::B2;
-   |         ~~~~~~
+   |         ~~~~~
 
 error: aborting due to 2 previous errors
 

diff --git a/tests/ui/imports/issue-56125.stderr b/tests/ui/imports/issue-56125.stderr
@@ -7,13 +7,13 @@ LL |     use empty::issue_56125;
 help: consider importing one of these items instead
    |
 LL |     use crate::m3::last_segment::issue_56125;
-   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 LL |     use crate::m3::non_last_segment::non_last_segment::issue_56125;
-   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
 LL |     use issue_56125::issue_56125;
-   |         ~~~~~~~~~~~~~~~~~~~~~~~~~
+   |         ~~~~~~~~~~~~~~~~~~~~~~~~
 LL |     use issue_56125::last_segment::issue_56125;
-   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+   |         ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
      and 1 other candidate
 
 error[E0659]: `issue_56125` is ambiguous

diff --git a/tests/ui/imports/issue-57015.stderr b/tests/ui/imports/issue-57015.stderr
@@ -7,7 +7,7 @@ LL | use single_err::something;
 help: consider importing this module instead
    |
 LL | use glob_ok::something;
-   |     ~~~~~~~~~~~~~~~~~~~
+   |     ~~~~~~~~~~~~~~~~~~
 
 error: aborting due to previous error
 

diff --git a/tests/ui/macros/issue-88228.rs b/tests/ui/macros/issue-88228.rs
@@ -8,7 +8,7 @@ mod hey {
 
 #[derive(Bla)]
 //~^ ERROR cannot find derive macro `Bla`
-//~| NOTE consider importing this derive macro
+//~| HELP consider importing this derive macro
 struct A;
 
 #[derive(println)]
@@ -19,5 +19,5 @@ struct B;
 fn main() {
     bla!();
     //~^ ERROR cannot find macro `bla`
-    //~| NOTE consider importing this macro
+    //~| HELP consider importing this macro
 }
diff --git a/tests/ui/macros/issue-88228.stderr b/tests/ui/macros/issue-88228.stderr
@@ -4,7 +4,7 @@ error: cannot find macro `bla` in this scope
 LL |     bla!();
    |     ^^^
    |
-   = note: consider importing this macro:
+   = help: consider importing this macro:
            crate::hey::bla
 
 error: cannot find derive macro `println` in this scope
@@ -21,7 +21,7 @@ error: cannot find derive macro `Bla` in this scope
 LL | #[derive(Bla)]
    |          ^^^
    |
-   = note: consider importing this derive macro:
+   = help: consider importing this derive macro:
            crate::hey::Bla
 
 error: aborting due to 3 previous errors

diff --git a/tests/ui/macros/macro-use-wrong-name.stderr b/tests/ui/macros/macro-use-wrong-name.stderr
@@ -9,7 +9,7 @@ LL |     macro_two!();
 LL | macro_rules! macro_one { () => ("one") }
    | ---------------------- similarly named macro `macro_one` defined here
    |
-   = note: consider importing this macro:
+   = help: consider importing this macro:
            two_macros::macro_two
 
 error: aborting due to previous error

diff --git a/tests/ui/missing/missing-macro-use.stderr b/tests/ui/missing/missing-macro-use.stderr
@@ -4,7 +4,7 @@ error: cannot find macro `macro_two` in this scope
 LL |     macro_two!();
    |     ^^^^^^^^^
    |
-   = note: consider importing this macro:
+   = help: consider importing this macro:
            two_macros::macro_two
 
 error: aborting due to previous error

diff --git a/tests/ui/proc-macro/derive-helper-shadowing.stderr b/tests/ui/proc-macro/derive-helper-shadowing.stderr
@@ -16,7 +16,7 @@ error: cannot find attribute `empty_helper` in this scope
 LL |             #[derive(GenHelperUse)]
    |                      ^^^^^^^^^^^^
    |
-   = note: consider importing this attribute macro:
+   = help: consider importing this attribute macro:
            empty_helper
    = note: this error originates in the derive macro `GenHelperUse` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -29,7 +29,7 @@ LL |         #[empty_helper]
 LL |             gen_helper_use!();
    |             ----------------- in this macro invocation
    |
-   = note: consider importing this attribute macro:
+   = help: consider importing this attribute macro:
            crate::empty_helper
    = note: this error originates in the macro `gen_helper_use` (in Nightly builds, run with -Z macro-backtrace for more info)
 

diff --git a/tests/ui/proc-macro/generate-mod.stderr b/tests/ui/proc-macro/generate-mod.stderr
@@ -4,7 +4,7 @@ error[E0412]: cannot find type `FromOutside` in this scope
 LL | generate_mod::check!();
    | ^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            FromOutside
    = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -14,7 +14,7 @@ error[E0412]: cannot find type `Outer` in this scope
 LL | generate_mod::check!();
    | ^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            Outer
    = note: this error originates in the macro `generate_mod::check` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -24,7 +24,7 @@ error[E0412]: cannot find type `FromOutside` in this scope
 LL | #[generate_mod::check_attr]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            FromOutside
    = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -34,7 +34,7 @@ error[E0412]: cannot find type `OuterAttr` in this scope
 LL | #[generate_mod::check_attr]
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            OuterAttr
    = note: this error originates in the attribute macro `generate_mod::check_attr` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -44,7 +44,7 @@ error[E0412]: cannot find type `FromOutside` in this scope
 LL | #[derive(generate_mod::CheckDerive)]
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            FromOutside
    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -54,7 +54,7 @@ error[E0412]: cannot find type `OuterDerive` in this scope
 LL | #[derive(generate_mod::CheckDerive)]
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            OuterDerive
    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -64,7 +64,7 @@ error[E0412]: cannot find type `FromOutside` in this scope
 LL |     #[derive(generate_mod::CheckDerive)]
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            FromOutside
    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -74,7 +74,7 @@ error[E0412]: cannot find type `OuterDerive` in this scope
 LL |     #[derive(generate_mod::CheckDerive)]
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            OuterDerive
    = note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -84,7 +84,7 @@ error[E0412]: cannot find type `FromOutside` in this scope
 LL | #[derive(generate_mod::CheckDeriveLint)]
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            FromOutside
    = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
 
@@ -94,7 +94,7 @@ error[E0412]: cannot find type `OuterDeriveLint` in this scope
 LL | #[derive(generate_mod::CheckDeriveLint)]
    |          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ not found in this scope
    |
-   = note: consider importing this struct:
+   = help: consider importing this struct:
            OuterDeriveLint
    = note: this error originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
 

diff --git a/tests/ui/rfc-2126-extern-absolute-paths/not-allowed.stderr b/tests/ui/rfc-2126-extern-absolute-paths/not-allowed.stderr
@@ -7,9 +7,9 @@ LL | use alloc;
 help: consider importing one of these items instead
    |
 LL | use core::alloc;
-   |     ~~~~~~~~~~~~
-LL | use std::alloc;
    |     ~~~~~~~~~~~
+LL | use std::alloc;
+   |     ~~~~~~~~~~
 
 error: aborting due to previous error
 

diff --git a/tests/ui/simd/portable-intrinsics-arent-exposed.stderr b/tests/ui/simd/portable-intrinsics-arent-exposed.stderr
@@ -15,7 +15,7 @@ LL | use std::simd::intrinsics;
 help: consider importing this module instead
    |
 LL | use std::intrinsics;
-   |     ~~~~~~~~~~~~~~~~
+   |     ~~~~~~~~~~~~~~~
 
 error: aborting due to 2 previous errors
 

diff --git a/tests/ui/test-attrs/inaccessible-test-modules.stderr b/tests/ui/test-attrs/inaccessible-test-modules.stderr
@@ -13,7 +13,7 @@ LL | use test as y;
 help: consider importing this module instead
    |
 LL | use test::test as y;
-   |     ~~~~~~~~~~~~~~~~
+   |     ~~~~~~~~~~~~~~~
 
 error: aborting due to 2 previous errors
 

diff --git a/tests/ui/unresolved/unresolved-candidates.stderr b/tests/ui/unresolved/unresolved-candidates.stderr
@@ -7,7 +7,7 @@ LL |     use Trait;
 help: consider importing this trait instead
    |
 LL |     use a::Trait;
-   |         ~~~~~~~~~
+   |         ~~~~~~~~
 
 error[E0405]: cannot find trait `Trait` in this scope
   --> $DIR/unresolved-candidates.rs:10:10