From 234b65fd6155e14f260765aff0fd8c6f7f9e4169 Mon Sep 17 00:00:00 2001
From: Erlend Tobiassen <erlend.tobiassen@gmail.com>
Date: Tue, 22 Jan 2019 18:33:53 +0100
Subject: [PATCH] Allow placeholder parameters in trait fn defs

---
 crates/ra_syntax/src/grammar/params.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/ra_syntax/src/grammar/params.rs b/crates/ra_syntax/src/grammar/params.rs
index 658fc58209..130660740d 100644
--- a/crates/ra_syntax/src/grammar/params.rs
+++ b/crates/ra_syntax/src/grammar/params.rs
@@ -79,7 +79,7 @@ fn value_parameter(p: &mut Parser, flavor: Flavor) {
             let la1 = p.nth(1);
             let la2 = p.nth(2);
             let la3 = p.nth(3);
-            if la0 == IDENT && la1 == COLON
+            if (la0 == IDENT || la0 == UNDERSCORE) && la1 == COLON
                 || la0 == AMP && la1 == IDENT && la2 == COLON
                 || la0 == AMP && la1 == MUT_KW && la2 == IDENT && la3 == COLON
             {