chore: checkpoint before Python removal

vendor/displaydoc/tests/compile_tests.rs

@@ -0,0 +1,29 @@
+#[allow(unused_attributes)]
+#[rustversion::attr(not(nightly), ignore)]
+#[test]
+fn no_std() {
+    let t = trybuild::TestCases::new();
+    #[cfg(not(feature = "std"))]
+    t.compile_fail("tests/no_std/without.rs");
+    #[cfg(not(feature = "std"))]
+    t.compile_fail("tests/no_std/multi_line.rs");
+    #[cfg(not(feature = "std"))]
+    t.pass("tests/no_std/multi_line_allow.rs");
+    #[cfg(not(feature = "std"))]
+    t.compile_fail("tests/no_std/enum_prefix_missing.rs");
+    #[cfg(not(feature = "std"))]
+    t.pass("tests/no_std/enum_prefix.rs");
+    #[cfg(feature = "std")]
+    t.compile_fail("tests/std/without.rs");
+    #[cfg(feature = "std")]
+    t.compile_fail("tests/std/multi_line.rs");
+    #[cfg(feature = "std")]
+    t.pass("tests/std/multi_line_allow.rs");
+    #[cfg(feature = "std")]
+    t.compile_fail("tests/std/enum_prefix_missing.rs");
+    #[cfg(feature = "std")]
+    t.pass("tests/std/enum_prefix.rs");
+    #[cfg(feature = "std")]
+    t.pass("tests/std/multiple.rs");
+    t.pass("tests/no_std/with.rs");
+}

vendor/displaydoc/tests/happy.rs

@@ -0,0 +1,152 @@
+use displaydoc::Display;
+
+#[cfg(feature = "std")]
+use std::path::PathBuf;
+
+#[derive(Display)]
+/// Just a basic struct {thing}
+struct HappyStruct {
+    thing: &'static str,
+}
+
+#[derive(Display)]
+#[ignore_extra_doc_attributes]
+/// Just a basic struct {thing}
+/// and this line should get ignored
+struct HappyStruct2 {
+    thing: &'static str,
+}
+
+#[derive(Display)]
+enum Happy {
+    /// I really like Variant1
+    Variant1,
+    /// Variant2 is pretty swell 2
+    Variant2,
+    /// Variant3 is okay {sometimes}
+    Variant3 { sometimes: &'static str },
+    /**
+     * Variant4 wants to have a lot of lines
+     *
+     * Lets see how this works out for it
+     */
+    Variant4,
+    /// Variant5 has a parameter {0} and some regular comments
+    // A regular comment that won't get picked
+    Variant5(u32),
+
+    /// The path {0}
+    #[cfg(feature = "std")]
+    Variant6(PathBuf),
+
+    /// These docs are ignored
+    #[displaydoc("Variant7 has a parameter {0} and uses #[displaydoc]")]
+    /// These docs are also ignored
+    Variant7(u32),
+}
+
+// Used for testing indented doc comments
+mod inner_mod {
+    use super::Display;
+
+    #[derive(Display)]
+    pub enum InnerHappy {
+        /// I really like Variant1
+        Variant1,
+        /// Variant2 is pretty swell 2
+        Variant2,
+        /// Variant3 is okay {sometimes}
+        Variant3 { sometimes: &'static str },
+        /**
+         * Variant4 wants to have a lot of lines
+         *
+         * Lets see how this works out for it
+         */
+        Variant4,
+        /// Variant5 has a parameter {0} and some regular comments
+        // A regular comment that won't get picked
+        Variant5(u32),
+
+        /** what happens if we
+         * put text on the first line?
+         */
+        Variant6,
+
+        /**
+        what happens if we don't use *?
+        */
+        Variant7,
+
+        /**
+         *
+         * what about extra new lines?
+         */
+        Variant8,
+    }
+}
+
+fn assert_display<T: std::fmt::Display>(input: T, expected: &'static str) {
+    let out = format!("{}", input);
+    assert_eq!(expected, out);
+}
+
+#[test]
+fn does_it_print() {
+    assert_display(Happy::Variant1, "I really like Variant1");
+    assert_display(Happy::Variant2, "Variant2 is pretty swell 2");
+    assert_display(Happy::Variant3 { sometimes: "hi" }, "Variant3 is okay hi");
+    assert_display(
+        Happy::Variant4,
+        "Variant4 wants to have a lot of lines\n\nLets see how this works out for it",
+    );
+    assert_display(
+        Happy::Variant5(2),
+        "Variant5 has a parameter 2 and some regular comments",
+    );
+    assert_display(
+        Happy::Variant7(2),
+        "Variant7 has a parameter 2 and uses #[displaydoc]",
+    );
+    assert_display(HappyStruct { thing: "hi" }, "Just a basic struct hi");
+
+    assert_display(HappyStruct2 { thing: "hi2" }, "Just a basic struct hi2");
+
+    assert_display(inner_mod::InnerHappy::Variant1, "I really like Variant1");
+    assert_display(
+        inner_mod::InnerHappy::Variant2,
+        "Variant2 is pretty swell 2",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant3 { sometimes: "hi" },
+        "Variant3 is okay hi",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant4,
+        "Variant4 wants to have a lot of lines\n\nLets see how this works out for it",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant5(2),
+        "Variant5 has a parameter 2 and some regular comments",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant6,
+        "what happens if we\nput text on the first line?",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant7,
+        "what happens if we don\'t use *?",
+    );
+    assert_display(
+        inner_mod::InnerHappy::Variant8,
+        "what about extra new lines?",
+    );
+}
+
+#[test]
+#[cfg(feature = "std")]
+fn does_it_print_path() {
+    assert_display(
+        Happy::Variant6(PathBuf::from("/var/log/happy")),
+        "The path /var/log/happy",
+    );
+}

vendor/displaydoc/tests/no_std/enum_prefix.rs

@@ -0,0 +1,36 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+#[prefix_enum_doc_attributes]
+enum TestType {
+    /// this variant is too
+    Variant1,
+
+    /// this variant is two
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/no_std/enum_prefix_missing.rs

@@ -0,0 +1,35 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+#[derive(Display)]
+#[prefix_enum_doc_attributes]
+enum TestType {
+    /// this variant is too
+    Variant1,
+
+    /// this variant is two
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/no_std/enum_prefix_missing.stderr

@@ -0,0 +1,22 @@
+error: proc-macro derive panicked
+  --> $DIR/enum_prefix_missing.rs:22:10
+   |
+22 | #[derive(Display)]
+   |          ^^^^^^^
+   |
+   = help: message: Missing doc comment on enum with #[prefix_enum_doc_attributes]. Please remove the attribute or add a doc comment to the enum itself.
+
+error[E0277]: `TestType` doesn't implement `Display`
+  --> $DIR/enum_prefix_missing.rs:32:37
+   |
+32 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   |                                     ^^^^^^^^ `TestType` cannot be formatted with the default formatter
+   |
+   = help: the trait `Display` is not implemented for `TestType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/enum_prefix_missing.rs:32:1
+   |
+32 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/no_std/multi_line.rs

@@ -0,0 +1,37 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+enum TestType {
+    /// This one is okay
+    Variant1,
+
+    /// Multi
+    /// line
+    /// doc.
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/no_std/multi_line.stderr

@@ -0,0 +1,22 @@
+error: proc-macro derive panicked
+  --> $DIR/multi_line.rs:23:10
+   |
+23 | #[derive(Display)]
+   |          ^^^^^^^
+   |
+   = help: message: Multi-line comments are disabled by default by displaydoc. Please consider using block doc comments (/** */) or adding the #[ignore_extra_doc_attributes] attribute to your type next to the derive.
+
+error[E0277]: `TestType` doesn't implement `Display`
+  --> $DIR/multi_line.rs:34:37
+   |
+34 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   |                                     ^^^^^^^^ `TestType` cannot be formatted with the default formatter
+   |
+   = help: the trait `Display` is not implemented for `TestType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/multi_line.rs:34:1
+   |
+34 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/no_std/multi_line_allow.rs

@@ -0,0 +1,38 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+#[ignore_extra_doc_attributes]
+enum TestType {
+    /// This one is okay
+    Variant1,
+
+    /// Multi
+    /// line
+    /// doc.
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/no_std/with.rs

@@ -0,0 +1,32 @@
+#![feature(lang_items, start)]
+#![no_std]
+
+#[start]
+#[cfg(not(feature = "std"))]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+#[cfg(feature = "std")]
+fn main() {}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+struct FakeType;
+
+static_assertions::assert_impl_all!(FakeType: core::fmt::Display);

vendor/displaydoc/tests/no_std/without.rs

@@ -0,0 +1,28 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+struct FakeType;
+
+static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/no_std/without.stderr

@@ -0,0 +1,22 @@
+warning: unused import: `displaydoc::Display`
+  --> $DIR/without.rs:20:5
+   |
+20 | use displaydoc::Display;
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(unused_imports)]` on by default
+
+error[E0277]: `FakeType` doesn't implement `Display`
+  --> $DIR/without.rs:25:37
+   |
+25 | static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+   |                                     ^^^^^^^^ `FakeType` cannot be formatted with the default formatter
+   |
+   = help: the trait `Display` is not implemented for `FakeType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/without.rs:25:1
+   |
+25 | static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/num_in_field.rs

@@ -0,0 +1,22 @@
+/// {foo1} {foo2}
+#[derive(displaydoc::Display)]
+pub struct Test {
+    foo1: String,
+    foo2: String,
+}
+
+fn assert_display<T: std::fmt::Display>(input: T, expected: &'static str) {
+    let out = format!("{}", input);
+    assert_eq!(expected, out);
+}
+
+#[test]
+fn does_it_print() {
+    assert_display(
+        Test {
+            foo1: "hi".into(),
+            foo2: "hello".into(),
+        },
+        "hi hello",
+    );
+}

vendor/displaydoc/tests/std/enum_prefix.rs

@@ -0,0 +1,36 @@
+#![cfg_attr(not(feature = "std"), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+#[prefix_enum_doc_attributes]
+enum TestType {
+    /// this variant is too
+    Variant1,
+
+    /// this variant is two
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/std/enum_prefix_missing.rs

@@ -0,0 +1,35 @@
+#![cfg_attr(not(feature = "std"), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+#[derive(Display)]
+#[prefix_enum_doc_attributes]
+enum TestType {
+    /// this variant is too
+    Variant1,
+
+    /// this variant is two
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/std/enum_prefix_missing.stderr

@@ -0,0 +1,22 @@
+error: proc-macro derive panicked
+  --> $DIR/enum_prefix_missing.rs:22:10
+   |
+22 | #[derive(Display)]
+   |          ^^^^^^^
+   |
+   = help: message: Missing doc comment on enum with #[prefix_enum_doc_attributes]. Please remove the attribute or add a doc comment to the enum itself.
+
+error[E0277]: `TestType` doesn't implement `std::fmt::Display`
+  --> $DIR/enum_prefix_missing.rs:32:37
+   |
+32 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   |                                     ^^^^^^^^ `TestType` cannot be formatted with the default formatter
+   |
+   = help: the trait `std::fmt::Display` is not implemented for `TestType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/enum_prefix_missing.rs:32:1
+   |
+32 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/std/multi_line.rs

@@ -0,0 +1,37 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+enum TestType {
+    /// This one is okay
+    Variant1,
+
+    /// Multi
+    /// line
+    /// doc.
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/std/multi_line.stderr

@@ -0,0 +1,22 @@
+error: proc-macro derive panicked
+  --> $DIR/multi_line.rs:23:10
+   |
+23 | #[derive(Display)]
+   |          ^^^^^^^
+   |
+   = help: message: Multi-line comments are disabled by default by displaydoc. Please consider using block doc comments (/** */) or adding the #[ignore_extra_doc_attributes] attribute to your type next to the derive.
+
+error[E0277]: `TestType` doesn't implement `std::fmt::Display`
+  --> $DIR/multi_line.rs:34:37
+   |
+34 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   |                                     ^^^^^^^^ `TestType` cannot be formatted with the default formatter
+   |
+   = help: the trait `std::fmt::Display` is not implemented for `TestType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/multi_line.rs:34:1
+   |
+34 | static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/std/multi_line_allow.rs

@@ -0,0 +1,38 @@
+#![cfg_attr(not(feature = "std"), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+#[ignore_extra_doc_attributes]
+enum TestType {
+    /// This one is okay
+    Variant1,
+
+    /// Multi
+    /// line
+    /// doc.
+    Variant2,
+}
+
+static_assertions::assert_impl_all!(TestType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/std/multiple.rs

@@ -0,0 +1,38 @@
+#![feature(lang_items, start)]
+#![no_std]
+
+#[start]
+#[cfg(not(feature = "std"))]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+#[cfg(feature = "std")]
+fn main() {}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+#[derive(Display)]
+struct FakeType;
+
+static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+
+/// this type is pretty swell2
+#[derive(Display)]
+struct FakeType2;
+
+static_assertions::assert_impl_all!(FakeType2: core::fmt::Display);

vendor/displaydoc/tests/std/without.rs

@@ -0,0 +1,28 @@
+#![cfg_attr(not(feature = "std"), allow(internal_features), feature(lang_items, start))]
+#![cfg_attr(not(feature = "std"), no_std)]
+
+#[cfg_attr(not(feature = "std"), start)]
+fn start(_argc: isize, _argv: *const *const u8) -> isize {
+    0
+}
+#[lang = "eh_personality"]
+#[no_mangle]
+#[cfg(not(feature = "std"))]
+pub extern "C" fn rust_eh_personality() {}
+#[panic_handler]
+#[cfg(not(feature = "std"))]
+fn panic(_info: &core::panic::PanicInfo) -> ! {
+    unsafe {
+        libc::abort();
+    }
+}
+
+use displaydoc::Display;
+
+/// this type is pretty swell
+struct FakeType;
+
+static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+
+#[cfg(feature = "std")]
+fn main() {}

vendor/displaydoc/tests/std/without.stderr

@@ -0,0 +1,22 @@
+warning: unused import: `displaydoc::Display`
+  --> $DIR/without.rs:20:5
+   |
+20 | use displaydoc::Display;
+   |     ^^^^^^^^^^^^^^^^^^^
+   |
+   = note: `#[warn(unused_imports)]` on by default
+
+error[E0277]: `FakeType` doesn't implement `std::fmt::Display`
+  --> $DIR/without.rs:25:37
+   |
+25 | static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+   |                                     ^^^^^^^^ `FakeType` cannot be formatted with the default formatter
+   |
+   = help: the trait `std::fmt::Display` is not implemented for `FakeType`
+   = note: in format strings you may be able to use `{:?}` (or {:#?} for pretty-print) instead
+note: required by a bound in `assert_impl_all`
+  --> $DIR/without.rs:25:1
+   |
+25 | static_assertions::assert_impl_all!(FakeType: core::fmt::Display);
+   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ required by this bound in `assert_impl_all`
+   = note: this error originates in the macro `static_assertions::assert_impl_all` (in Nightly builds, run with -Z macro-backtrace for more info)

vendor/displaydoc/tests/variantless.rs

@@ -0,0 +1,6 @@
+use displaydoc::Display;
+
+#[derive(Display)]
+enum EmptyInside {}
+
+static_assertions::assert_impl_all!(EmptyInside: core::fmt::Display);