LibRegex: Allow dollar signs in ECMA262 named capture groups

Fixes 1 test262 test.

2 files changed, 4 insertions, 1 deletions

diff --git a/Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.replace.js b/Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.replace.js
index 16d481c9f8..90e306bccb 100644
--- a/Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.replace.js
+++ b/Userland/Libraries/LibJS/Tests/builtins/String/String.prototype.replace.js
@@ -138,6 +138,9 @@ test("replacement with substitution", () => {
     expect("abc".replace(/(?<val1>a)b(?<val2>c)/, "$<val1>")).toBe("a");
     expect("abc".replace(/(?<val1>a)b(?<val2>c)/, "$<val2>")).toBe("c");
     expect("abc".replace(/(?<val1>a)b(?<val2>c)/, "$<val2>b$<val1>")).toBe("cba");
+
+    expect(/(?<𝒜>b)/u[Symbol.replace]("abc", "d$<𝒜>$`")).toBe("adbac");
+    expect(/(?<$𐒤>b)/gu[Symbol.replace]("abc", "$'$<$𐒤>d")).toBe("acbdc");
 });
 
 test("replacement with substitution and 'groups' coerced to an object", () => {
diff --git a/Userland/Libraries/LibRegex/RegexParser.cpp b/Userland/Libraries/LibRegex/RegexParser.cpp
index 1c6a78b072..a3a271036f 100644
--- a/Userland/Libraries/LibRegex/RegexParser.cpp
+++ b/Userland/Libraries/LibRegex/RegexParser.cpp
@@ -1625,7 +1625,7 @@ StringView ECMA262Parser::read_capture_group_specifier(bool take_starting_angle_
 
     auto start_token = m_parser_state.current_token;
     size_t offset = 0;
-    while (match(TokenType::Char)) {
+    while (match(TokenType::Char) || match(TokenType::Dollar)) {
         auto c = m_parser_state.current_token.value();
         if (c == ">")
             break;