From 2ef4b74ca6992b4c6266d84b8996ce12bf23ace4 Mon Sep 17 00:00:00 2001
From: Sendil Kumar <sendilkumarn@live.com>
Date: Sat, 21 Jul 2018 23:06:36 +0200
Subject: [PATCH] add unescape

---
 crates/js-sys/src/lib.rs               | 9 +++++++++
 crates/js-sys/tests/wasm/global_fns.rs | 8 ++++++++
 2 files changed, 17 insertions(+)

diff --git a/crates/js-sys/src/lib.rs b/crates/js-sys/src/lib.rs
index 43e2efb2..7630dbbf 100644
--- a/crates/js-sys/src/lib.rs
+++ b/crates/js-sys/src/lib.rs
@@ -111,6 +111,15 @@ extern "C" {
     /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/escape
     #[wasm_bindgen]
     pub fn escape(string: &str) -> JsString;
+
+    /// The unescape() function computes a new string in which hexadecimal escape 
+    /// sequences are replaced with the character that it represents. The escape sequences might 
+    /// be introduced by a function like escape. Usually, decodeURI or decodeURIComponent
+    /// are preferred over unescape.
+    ///
+    /// https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/unescape
+    #[wasm_bindgen]
+    pub fn unescape(string: &str) -> JsString;
 }
 
 // Array
diff --git a/crates/js-sys/tests/wasm/global_fns.rs b/crates/js-sys/tests/wasm/global_fns.rs
index 0e1c9903..ec0e2a67 100644
--- a/crates/js-sys/tests/wasm/global_fns.rs
+++ b/crates/js-sys/tests/wasm/global_fns.rs
@@ -80,3 +80,11 @@ fn test_escape() {
     assert_eq!(String::from(escape("ć")), "%u0107");
     assert_eq!(String::from(escape("@*_+-./")), "@*_+-./");
 }
+
+#[wasm_bindgen_test]
+fn test_unescape() {
+    assert_eq!(String::from(unescape("abc123")), "abc123");
+    assert_eq!(String::from(unescape("%E4%F6%FC")), "äöü");
+    assert_eq!(String::from(unescape("%u0107")), "ć");
+    assert_eq!(String::from(unescape("@*_+-./")), "@*_+-./");
+}