From ed8d784eff614f564cd0daf52a622aaba6f81c19 Mon Sep 17 00:00:00 2001
From: David Tolnay <dtolnay@gmail.com>
Date: Sat, 8 Jul 2023 22:44:27 -0700
Subject: [PATCH] Support single identifier as unbraced const generic argument

---
 src/path.rs | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/path.rs b/src/path.rs
index 9668fab954..f8b3cc9dff 100644
--- a/src/path.rs
+++ b/src/path.rs
@@ -368,7 +368,6 @@ pub(crate) mod parsing {
             return Ok(Expr::Lit(lit));
         }
 
-        #[cfg(feature = "full")]
         if input.peek(Ident) {
             let ident: Ident = input.parse()?;
             return Ok(Expr::Path(ExprPath {
@@ -694,6 +693,14 @@ pub(crate) mod printing {
                 GenericArgument::Const(expr) => match expr {
                     Expr::Lit(expr) => expr.to_tokens(tokens),
 
+                    Expr::Path(expr)
+                        if expr.attrs.is_empty()
+                            && expr.qself.is_none()
+                            && expr.path.get_ident().is_some() =>
+                    {
+                        expr.to_tokens(tokens);
+                    }
+
                     #[cfg(feature = "full")]
                     Expr::Block(expr) => expr.to_tokens(tokens),