Fix escaped backslash crash (#1870)

* Fix escaped backslash crash Fixes #1855. * Code review
sass · Jan 25, 2023 · 0006924 · 0006924
1 parent 0248608
commit 0006924
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -14,6 +14,8 @@
 * Produce a better error message for a nested property whose name starts with
   `--`.
 
+* Fix a crash when a selector ends in an escaped backslash.
+
 ## 1.57.1
 
 * No user-visible changes.

diff --git a/lib/src/utils.dart b/lib/src/utils.dart
@@ -114,7 +114,7 @@ int? _lastNonWhitespace(String string, {bool excludeEscape = false}) {
     if (!isWhitespace(codeUnit)) {
       if (excludeEscape &&
           i != 0 &&
-          i != string.length &&
+          i != string.length - 1 &&
           codeUnit == $backslash) {
         return i + 1;
       } else {