From 32b1fa5555639dd8fa34064851041b5405f32581 Mon Sep 17 00:00:00 2001
From: Dmitriy Pleshevskiy <dmitriy@ideascup.me>
Date: Thu, 5 Jan 2023 16:53:09 +0300
Subject: [PATCH] grammar: add escape sequence for label and attr value

---
 grammar.js | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/grammar.js b/grammar.js
index 1b886cf..114b847 100644
--- a/grammar.js
+++ b/grammar.js
@@ -293,7 +293,17 @@ module.exports = grammar({
     dot: ($) => token("."),
 
     _unquoted_string: ($) =>
-      token(prec(PREC.UNQUOTED_STRING, /[^'"`|\n\s;{}]([^\n;{}]*[^\n\s;{}])?/)),
+      repeat1(
+        choice(
+          $.escape_sequence,
+          token(
+            prec(
+              PREC.UNQUOTED_STRING,
+              /[^'"`\\|\n\s;{}]([^\\\n;{}]*[^\\\n\s;{}])?/
+            )
+          )
+        )
+      ),
 
     string: ($) =>
       choice(