From 25cddad47b4a5cdb0578e100f92d7928975e5f35 Mon Sep 17 00:00:00 2001
From: kigland <shuaizhicheng336@gmail.com>
Date: Mon, 1 Jun 2026 13:36:50 +0800
Subject: [PATCH] fix extended parser boolean prefix fields

---
 CHANGELOG.md                  |  3 +++
 jsonpath_ng/ext/parser.py     |  2 +-
 tests/test_jsonpath_rw_ext.py | 12 ++++++++++++
 3 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 55ad1a7..c033527 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,9 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ## [Unreleased]
 
+### Fixed
+- Fix extended parser handling of field names that start with `true` or `false`.
+
 ## [1.8.0] - 2026-02-24
 
 ### Added
diff --git a/jsonpath_ng/ext/parser.py b/jsonpath_ng/ext/parser.py
index 8d75a42..7e3d372 100644
--- a/jsonpath_ng/ext/parser.py
+++ b/jsonpath_ng/ext/parser.py
@@ -31,7 +31,7 @@ class ExtendedJsonPathLexer(lexer.JsonPathLexer):
     t_FILTER_OP = r'=~|==?|<=|>=|!=|<|>'
 
     def t_BOOL(self, t):
-        r'true|false'
+        r'true(?![a-zA-Z0-9_@\-])|false(?![a-zA-Z0-9_@\-])'
         t.value = True if t.value == 'true' else False
         return t
 
diff --git a/tests/test_jsonpath_rw_ext.py b/tests/test_jsonpath_rw_ext.py
index ca1c3e9..a8649c3 100644
--- a/tests/test_jsonpath_rw_ext.py
+++ b/tests/test_jsonpath_rw_ext.py
@@ -484,6 +484,18 @@
         ["green"],
         id="boolean-filter-string-true-string-literal",
     ),
+    pytest.param(
+        "false_positives",
+        {"problems_detected": 4, "false_positives": 2},
+        [2],
+        id="field-starting-with-false",
+    ),
+    pytest.param(
+        "trueName",
+        {"trueName": "value"},
+        ["value"],
+        id="field-starting-with-true",
+    ),
     pytest.param(
         "foo[?flag = true].color",
         {