From aea9c870de447f03a44b7b53a6a9f8813299722c Mon Sep 17 00:00:00 2001
From: Konrad Borowski <konrad@borowski.pw>
Date: Mon, 20 Jan 2020 12:37:11 +0100
Subject: [PATCH] Support raw strings in Rust lexer

Fixes #1398
---
 lib/rouge/lexers/rust.rb | 1 +
 spec/visual/samples/rust | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/lib/rouge/lexers/rust.rb b/lib/rouge/lexers/rust.rb
index 29850ef93a..d3ecfe42be 100644
--- a/lib/rouge/lexers/rust.rb
+++ b/lib/rouge/lexers/rust.rb
@@ -159,6 +159,7 @@ def macro_closed?
         )x, Str::Char
 
         rule %r/"/, Str, :string
+        rule %r/r(#*)".*?"\1/, Str
 
         # numbers
         dot = /[.][0-9_]+/
diff --git a/spec/visual/samples/rust b/spec/visual/samples/rust
index 928d6e6123..92e5b2dec2 100644
--- a/spec/visual/samples/rust
+++ b/spec/visual/samples/rust
@@ -30,6 +30,11 @@ println!("a\\");
 println!("a\n");
 println!("a\"b");
 println!("a\'");
+println!(r"");
+println!(r"\n\");
+println!(r#"a"b\"#);
+println!(r##"r#""#"##);
+println!(r###"r##"r#""#"##"###);
 
 debug!("test %?", a.b);
 debug!("test %u", a.c);