From f731e2ddd9f5590673b12d8f0910265cc8f67f5b Mon Sep 17 00:00:00 2001
From: Constantin Piber <cp.piber@gmail.com>
Date: Fri, 15 Nov 2024 12:21:17 +0100
Subject: [PATCH] [#331] Re-introduce boundary check

This improves the regex evaluation back to when we still had `\b` in
front, while (hopefully) doing as it should
---
 src/DynamicExpresso.Core/Detector.cs | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/DynamicExpresso.Core/Detector.cs b/src/DynamicExpresso.Core/Detector.cs
index e325397..3d58e01 100644
--- a/src/DynamicExpresso.Core/Detector.cs
+++ b/src/DynamicExpresso.Core/Detector.cs
@@ -12,10 +12,10 @@ internal class Detector
 		private readonly ParserSettings _settings;
 
 		private static readonly Regex RootIdentifierDetectionRegex =
-			new Regex(@"(?<id>@?[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*)", RegexOptions.Compiled);
+			new Regex(@"(?<=[^\w@]|^)(?<id>@?[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*)", RegexOptions.Compiled);
 
 		private static readonly Regex ChildIdentifierDetectionRegex = new Regex(
-			@"(?<id>@?[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*(\.[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*)*)",
+			@"(?<=[^\w@]|^)(?<id>@?[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*(\.[\p{L}\p{Nl}_][\p{L}\p{Nl}\p{Nd}\p{Mn}\p{Mc}\p{Pc}\p{Cf}_]*)*)",
 			RegexOptions.Compiled);