From 51730fb171c7d92216451ca777a3981105bad374 Mon Sep 17 00:00:00 2001
From: Jaro Fietz <jaro.fietz@gmx.de>
Date: Tue, 29 Jun 2021 15:13:43 +0200
Subject: [PATCH 1/4] Make the most special expression even more special

Add or-pattern syntax in argument position
---
 src/test/ui/weird-exprs.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/test/ui/weird-exprs.rs b/src/test/ui/weird-exprs.rs
index 42acd30a0ff6a..d7420a00af42c 100644
--- a/src/test/ui/weird-exprs.rs
+++ b/src/test/ui/weird-exprs.rs
@@ -115,7 +115,7 @@ fn union() {
 }
 
 fn special_characters() {
-    let val = !((|(..):(_,_),__@_|__)((&*"\\",'🤔')/**/,{})=={&[..=..][..];})//
+    let val = !((|(..):(_,_),(|__@_|__)|__)((&*"\\",'#')/**/,{})=={&[..=..][..];})//
     ;
     assert!(!val);
 }

From df0b0d4ae381a863d84c1f1debc83c6adab65763 Mon Sep 17 00:00:00 2001
From: Jaro Fietz <jaro.fietz@gmx.de>
Date: Tue, 29 Jun 2021 20:22:44 +0200
Subject: [PATCH 2/4] Add unicode identifier to weird-exprs

Use unicode identifiers and a unicode emoji in weird-exprs.rs
---
 src/test/ui/weird-exprs.rs | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/src/test/ui/weird-exprs.rs b/src/test/ui/weird-exprs.rs
index d7420a00af42c..fb8b32e280309 100644
--- a/src/test/ui/weird-exprs.rs
+++ b/src/test/ui/weird-exprs.rs
@@ -6,6 +6,7 @@
 #![allow(dead_code)]
 #![allow(unreachable_code)]
 #![allow(unused_braces, unused_must_use, unused_parens)]
+#![allow(uncommon_codepoints, confusable_idents)]
 
 #![recursion_limit = "256"]
 
@@ -164,6 +165,13 @@ fn monkey_barrel() {
     assert_eq!(val, ());
 }
 
+fn unicode() {
+    fn 𝚋𝚛𝚎𝚊𝚔() -> char { '🤔' }
+    assert_eq!(loop {
+        break 𝚋𝚛𝚎𝚊𝚔 ();
+    }, '🤔');
+}
+
 fn bathroom_stall() {
     let mut i = 1;
     matches!(2, _|_|_|_|_|_ if (i+=1) != (i+=1));
@@ -189,5 +197,6 @@ pub fn main() {
     i_yield();
     match_nested_if();
     monkey_barrel();
+    unicode();
     bathroom_stall();
 }

From d85ba01ecb41873f47c2e6acb8cc397a6ae5f1bd Mon Sep 17 00:00:00 2001
From: Jaro Fietz <jaro.fietz@gmx.de>
Date: Tue, 29 Jun 2021 20:28:44 +0200
Subject: [PATCH 3/4] Add a function returning itself to weird-exprs

---
 src/test/ui/weird-exprs.rs | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/test/ui/weird-exprs.rs b/src/test/ui/weird-exprs.rs
index fb8b32e280309..c7ee9c7334a9e 100644
--- a/src/test/ui/weird-exprs.rs
+++ b/src/test/ui/weird-exprs.rs
@@ -1,6 +1,8 @@
 // run-pass
 
 #![feature(generators)]
+#![feature(destructuring_assignment)]
+#![feature(unboxed_closures, fn_traits)]
 
 #![allow(non_camel_case_types)]
 #![allow(dead_code)]
@@ -172,6 +174,17 @@ fn unicode() {
     }, '🤔');
 }
 
+fn function() {
+    struct foo;
+    impl FnOnce<()> for foo {
+        type Output = foo;
+        extern "rust-call" fn call_once(self, _args: ()) -> Self::Output {
+            foo
+        }
+    }
+    let foo = foo () ()() ()()() ()()()() ()()()()();
+}
+
 fn bathroom_stall() {
     let mut i = 1;
     matches!(2, _|_|_|_|_|_ if (i+=1) != (i+=1));
@@ -198,5 +211,6 @@ pub fn main() {
     match_nested_if();
     monkey_barrel();
     unicode();
+    function();
     bathroom_stall();
 }

From 6491eb1e6c9fac20faad11e5da16db3185b2410d Mon Sep 17 00:00:00 2001
From: oberien <jaro.fietz@gmx.de>
Date: Sat, 21 May 2022 00:17:33 +0200
Subject: [PATCH 4/4] Add back thinking emoji

---
 src/test/ui/weird-exprs.rs | 15 +++++++++------
 1 file changed, 9 insertions(+), 6 deletions(-)

diff --git a/src/test/ui/weird-exprs.rs b/src/test/ui/weird-exprs.rs
index c7ee9c7334a9e..4066bcf3badd7 100644
--- a/src/test/ui/weird-exprs.rs
+++ b/src/test/ui/weird-exprs.rs
@@ -1,7 +1,6 @@
 // run-pass
 
 #![feature(generators)]
-#![feature(destructuring_assignment)]
 #![feature(unboxed_closures, fn_traits)]
 
 #![allow(non_camel_case_types)]
@@ -118,7 +117,7 @@ fn union() {
 }
 
 fn special_characters() {
-    let val = !((|(..):(_,_),(|__@_|__)|__)((&*"\\",'#')/**/,{})=={&[..=..][..];})//
+    let val = !((|(..):(_,_),(|__@_|__)|__)((&*"\\",'🤔')/**/,{})=={&[..=..][..];})//
     ;
     assert!(!val);
 }
@@ -167,11 +166,15 @@ fn monkey_barrel() {
     assert_eq!(val, ());
 }
 
-fn unicode() {
-    fn 𝚋𝚛𝚎𝚊𝚔() -> char { '🤔' }
+fn 𝚌𝚘𝚗𝚝𝚒𝚗𝚞𝚎() {
+    type 𝚕𝚘𝚘𝚙 = i32;
+    fn 𝚋𝚛𝚎𝚊𝚔() -> 𝚕𝚘𝚘𝚙 {
+        let 𝚛𝚎𝚝𝚞𝚛𝚗 = 42;
+        return 𝚛𝚎𝚝𝚞𝚛𝚗;
+    }
     assert_eq!(loop {
         break 𝚋𝚛𝚎𝚊𝚔 ();
-    }, '🤔');
+    }, 42);
 }
 
 fn function() {
@@ -210,7 +213,7 @@ pub fn main() {
     i_yield();
     match_nested_if();
     monkey_barrel();
-    unicode();
+    𝚌𝚘𝚗𝚝𝚒𝚗𝚞𝚎();
     function();
     bathroom_stall();
 }