From a55ef9b3ed66a057bb3e58ab698f26e58afb5b7d Mon Sep 17 00:00:00 2001
From: Daniel McNab <36049421+DJMcNab@users.noreply.github.com>
Date: Wed, 3 Oct 2018 21:47:03 +0100
Subject: Support leading pipe in match arms

---
 crates/ra_syntax/src/grammar/expressions/atom.rs | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'crates/ra_syntax/src/grammar')

diff --git a/crates/ra_syntax/src/grammar/expressions/atom.rs b/crates/ra_syntax/src/grammar/expressions/atom.rs
index f01df56bc..a720d255f 100644
--- a/crates/ra_syntax/src/grammar/expressions/atom.rs
+++ b/crates/ra_syntax/src/grammar/expressions/atom.rs
@@ -319,10 +319,13 @@ pub(crate) fn match_arm_list(p: &mut Parser) {
 //     match () {
 //         _ => (),
 //         X | Y if Z => (),
+//         | X | Y if Z => (),
+//         | X => (),
 //     };
 // }
 fn match_arm(p: &mut Parser) -> BlockLike {
     let m = p.start();
+    p.eat(PIPE);
     patterns::pattern_r(p, TokenSet::EMPTY);
     while p.eat(PIPE) {
         patterns::pattern(p);
-- 
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