1 files changed, 152 insertions, 0 deletions
diff --git a/src/tools/rustfmt/tests/target/issue-4689/two.rs b/src/tools/rustfmt/tests/target/issue-4689/two.rs
new file mode 100644
index 000000000..e3b5cd228
--- /dev/null
+++ b/src/tools/rustfmt/tests/target/issue-4689/two.rs
@@ -0,0 +1,152 @@
+// rustfmt-version: Two
+
+// Based on the issue description
+pub trait PrettyPrinter<'tcx>:
+    Printer<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    >
+{
+    //
+}
+pub trait PrettyPrinter<'tcx>:
+    Printer<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    > + fmt::Write
+{
+    //
+}
+pub trait PrettyPrinter<'tcx>:
+    Printer<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    > + fmt::Write1
+    + fmt::Write2
+{
+    //
+}
+pub trait PrettyPrinter<'tcx>:
+    fmt::Write
+    + Printer<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    >
+{
+    //
+}
+pub trait PrettyPrinter<'tcx>:
+    fmt::Write
+    + Printer1<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    > + Printer2<
+        'tcx,
+        Error = fmt::Error,
+        Path = Self,
+        Region = Self,
+        Type = Self,
+        DynExistential = Self,
+        Const = Self,
+    >
+{
+    //
+}
+
+// Some test cases to ensure other cases formatting were not changed
+fn f() -> Box<
+    FnMut() -> Thing<
+        WithType = LongItemName,
+        Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+    >,
+> {
+}
+fn f() -> Box<
+    FnMut() -> Thing<
+            WithType = LongItemName,
+            Error = LONGLONGLONGLONGLONGONGEvenLongerErrorNameLongerLonger,
+        > + fmt::Write1
+        + fmt::Write2,
+> {
+}
+
+fn foo<F>(foo2: F)
+where
+    F: Fn(
+        // this comment is deleted
+    ),
+{
+}
+fn foo<F>(foo2: F)
+where
+    F: Fn(
+            // this comment is deleted
+        ) + fmt::Write,
+{
+}
+
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+    F: FnMut(
+        &mut ProbeContext,
+        ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+        tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+    ),
+{
+}
+fn elaborate_bounds<F>(mut mk_cand: F)
+where
+    F: FnMut(
+            &mut ProbeContext,
+            ty::PolyTraitRefffffffffffffffffffffffffffffffff,
+            tyyyyyyyyyyyyyyyyyyyyy::AssociatedItem,
+        ) + fmt::Write,
+{
+}
+
+fn build_sorted_static_get_entry_names(
+    mut entries: entryyyyyyyy,
+) -> (
+    impl Fn(
+        AlphabeticalTraversal,
+        Seconddddddddddddddddddddddddddddddddddd,
+    ) -> Parammmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
+    + Sendddddddddddddddddddddddddddddddddddddddddddd
+) {
+}
+
+pub trait SomeTrait:
+    Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+    + Eqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqqq
+{
+}
+
+trait B = where
+    for<'b> &'b Self: Send
+        + Cloneeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee
+        + Copyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyyy;