From 133d38128829869b4a3dd0245dda6a3caff4ad8e Mon Sep 17 00:00:00 2001
From: Mike Dalessio <mike.dalessio@gmail.com>
Date: Sat, 26 Dec 2020 16:31:56 -0500
Subject: [PATCH] fix(jruby): clearer exception when failing to resolve xpath
 func

Specifically, on XPath custom function resolution failure.
---
 ext/java/nokogiri/XmlXpathContext.java | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/ext/java/nokogiri/XmlXpathContext.java b/ext/java/nokogiri/XmlXpathContext.java
index 667281871c4..ad74dd44cbf 100644
--- a/ext/java/nokogiri/XmlXpathContext.java
+++ b/ext/java/nokogiri/XmlXpathContext.java
@@ -191,7 +191,9 @@ private IRubyObject node_set(ThreadContext context, String expr, IRubyObject han
             return tryGetNodeSet(context, expr, fnResolver);
         }
         catch (TransformerException ex) {
-            throw XmlSyntaxError.createXMLXPathSyntaxError(context.runtime, expr, ex).toThrowable(); // Nokogiri::XML::XPath::SyntaxError
+            throw XmlSyntaxError.createXMLXPathSyntaxError(context.runtime,
+                                                           (expr + ": " + ex.toString()),
+                                                           ex).toThrowable();
         }
     }