From 459146140aa0cb7a47f1c67d5a2a3ddb59524b63 Mon Sep 17 00:00:00 2001
From: Nick Wellnhofer <wellnhofer@aevum.de>
Date: Tue, 5 Nov 2024 12:05:14 +0100
Subject: [PATCH] xpath: Fix parsing of non-ASCII names

Fix a long-standing issue where QNames starting with a non-ASCII
character would be rejected. This became more visible after "streaming"
XPath evaluation was disabled since the latter handled non-ASCII names
correctly.

Fixes #818.
---
 result/XPath/tests/unicodesimple | 6 ++++++
 test/XPath/docs/unicode          | 1 +
 test/XPath/tests/unicodesimple   | 1 +
 xpath.c                          | 5 +++--
 4 files changed, 11 insertions(+), 2 deletions(-)
 create mode 100644 result/XPath/tests/unicodesimple
 create mode 100644 test/XPath/docs/unicode
 create mode 100644 test/XPath/tests/unicodesimple

diff --git a/result/XPath/tests/unicodesimple b/result/XPath/tests/unicodesimple
new file mode 100644
index 00000000..92aa5365
--- /dev/null
+++ b/result/XPath/tests/unicodesimple
@@ -0,0 +1,6 @@
+
+========================
+Expression: /文書
+Object is a Node Set :
+Set contains 1 nodes:
+1  ELEMENT #E6#96#87#E6#9B#B8
diff --git a/test/XPath/docs/unicode b/test/XPath/docs/unicode
new file mode 100644
index 00000000..8be1ea26
--- /dev/null
+++ b/test/XPath/docs/unicode
@@ -0,0 +1 @@
+<文書>text1</文書>
diff --git a/test/XPath/tests/unicodesimple b/test/XPath/tests/unicodesimple
new file mode 100644
index 00000000..d53f4f5f
--- /dev/null
+++ b/test/XPath/tests/unicodesimple
@@ -0,0 +1 @@
+/文書
diff --git a/xpath.c b/xpath.c
index e3ca1e16..1bd0fbab 100644
--- a/xpath.c
+++ b/xpath.c
@@ -10081,8 +10081,9 @@ xmlXPathCompLocationPath(xmlXPathParserContextPtr ctxt) {
 	    } else if (CUR == '/') {
 		NEXT;
 		SKIP_BLANKS;
-		if ((CUR != 0 ) &&
-		    ((IS_ASCII_LETTER(CUR)) || (CUR == '_') || (CUR == '.') ||
+		if ((CUR != 0) &&
+		    ((IS_ASCII_LETTER(CUR)) || (CUR >= 0x80) ||
+                     (CUR == '_') || (CUR == '.') ||
 		     (CUR == '@') || (CUR == '*')))
 		    xmlXPathCompRelativeLocationPath(ctxt);
 	    }