From 26e1f7696ae3903f868e50409fb7ee70ee37d6db Mon Sep 17 00:00:00 2001
From: Edwin Cheng <edwin0cheng@gmail.com>
Date: Sun, 27 Dec 2020 23:51:00 +0800
Subject: [PATCH] Ignore third punct in 2-composite punct

---
 crates/mbe/src/mbe_expander/matcher.rs | 40 +++++++++++++-------------
 crates/mbe/src/tests.rs                | 16 +++++++++++
 2 files changed, 36 insertions(+), 20 deletions(-)

diff --git a/crates/mbe/src/mbe_expander/matcher.rs b/crates/mbe/src/mbe_expander/matcher.rs
index 7aeef7be5c2e..44722c0f1a28 100644
--- a/crates/mbe/src/mbe_expander/matcher.rs
+++ b/crates/mbe/src/mbe_expander/matcher.rs
@@ -240,26 +240,26 @@ impl<'a> TtIter<'a> {
                 let tt3 = self.next().unwrap().clone();
                 Ok(tt::Subtree { delimiter: None, token_trees: vec![tt, tt2, tt3] }.into())
             }
-            ('-', '=', None)
-            | ('-', '>', None)
-            | (':', ':', None)
-            | ('!', '=', None)
-            | ('.', '.', None)
-            | ('*', '=', None)
-            | ('/', '=', None)
-            | ('&', '&', None)
-            | ('&', '=', None)
-            | ('%', '=', None)
-            | ('^', '=', None)
-            | ('+', '=', None)
-            | ('<', '<', None)
-            | ('<', '=', None)
-            | ('=', '=', None)
-            | ('=', '>', None)
-            | ('>', '=', None)
-            | ('>', '>', None)
-            | ('|', '=', None)
-            | ('|', '|', None) => {
+            ('-', '=', _)
+            | ('-', '>', _)
+            | (':', ':', _)
+            | ('!', '=', _)
+            | ('.', '.', _)
+            | ('*', '=', _)
+            | ('/', '=', _)
+            | ('&', '&', _)
+            | ('&', '=', _)
+            | ('%', '=', _)
+            | ('^', '=', _)
+            | ('+', '=', _)
+            | ('<', '<', _)
+            | ('<', '=', _)
+            | ('=', '=', _)
+            | ('=', '>', _)
+            | ('>', '=', _)
+            | ('>', '>', _)
+            | ('|', '=', _)
+            | ('|', '|', _) => {
                 let tt2 = self.next().unwrap().clone();
                 Ok(tt::Subtree { delimiter: None, token_trees: vec![tt, tt2] }.into())
             }
diff --git a/crates/mbe/src/tests.rs b/crates/mbe/src/tests.rs
index 451fa1456a40..6cd0ed205395 100644
--- a/crates/mbe/src/tests.rs
+++ b/crates/mbe/src/tests.rs
@@ -991,6 +991,22 @@ fn test_tt_composite2() {
     );
 }
 
+#[test]
+fn test_tt_with_composite_without_space() {
+    parse_macro(
+        r#"
+        macro_rules! foo {
+            ($ op:tt, $j:path) => (
+                0
+            )
+        }
+"#,
+    )
+    // Test macro input without any spaces
+    // See https://github.com/rust-analyzer/rust-analyzer/issues/6692
+    .assert_expand_items("foo!(==,Foo::Bool)", "0");
+}
+
 #[test]
 fn test_underscore() {
     parse_macro(