LibJS: Treat '\\' as an escaped character in template literals

Before this change we would ignore that the second backslash is escaped and template strings ending with ` \\` would be unterminated as the second slash was used to escape the closing quote.
Author: https://github.com/davidot Commit: b3edd94869 Pull-request: https://github.com/SerenityOS/serenity/pull/16073 Issue: https://github.com/SerenityOS/serenity/issues/16044 Reviewed-by: https://github.com/linusg
2025-09-20 16:28:54 +00:00 · 2022-11-14 21:52:58 +01:00 · 2022-11-14 21:52:58 +01:00 · b3edd94869 · 2024-07-17 04:27:29 +09:00
commit b3edd94869
parent 8e624c8f6d
2 changed files with 11 additions and 1 deletions
--- a/Userland/Libraries/LibJS/Tests/template-literals.js
+++ b/Userland/Libraries/LibJS/Tests/template-literals.js
@ -7,6 +7,9 @@ test("plain literals with expression-like characters", () => {

 test("plain literals with escaped special characters", () => {
    expect(`foo\``).toBe("foo`");
+    expect(`foo\\`).toBe("foo\\");
+    expect(`foo\\\``).toBe("foo\\`");
+    expect(`foo\\\\`).toBe("foo\\\\");
    expect(`foo\$`).toBe("foo$");
    expect(`foo \${"bar"}`).toBe('foo ${"bar"}');
 });