From 17a78acd8d8c7698632788c156ce0939c8d113ea Mon Sep 17 00:00:00 2001
From: Marcus Johansson <marcus.johansson@skalarit.se>
Date: Thu, 31 Oct 2024 14:18:52 +0100
Subject: [PATCH] Support single quotes in attribute for the declaration node

Modified the `AddAttr` function to trim both double and single quotes from attribute values. Added a test to ensure XML attributes with single quotes are correctly parsed.
---
 node_test.go | 10 ++++++++++
 parse.go     |  2 +-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/node_test.go b/node_test.go
index 21a2d31..0c571ef 100644
--- a/node_test.go
+++ b/node_test.go
@@ -658,3 +658,13 @@ func TestDirectiveNode(t *testing.T) {
 		t.Errorf(`expected "%s", obtained "%s"`, expected, v)
 	}
 }
+
+func TestOutputXMLWithSingleQuotes(t *testing.T) {
+	s := `<?xml version='1.0' encoding='utf-8'?><a><b c='d'></b></a>`
+	expected := `<?xml version="1.0" encoding="utf-8"?><a><b c="d"></b></a>`
+	doc, _ := Parse(strings.NewReader(s))
+	output := doc.OutputXML(false)
+	if expected != output {
+		t.Errorf(`expected "%s", obtained "%s"`, expected, output)
+	}
+}
diff --git a/parse.go b/parse.go
index daf7233..7627f46 100644
--- a/parse.go
+++ b/parse.go
@@ -266,7 +266,7 @@ func (p *parser) parse() (*Node, error) {
 			for _, pair := range pairs {
 				pair = strings.TrimSpace(pair)
 				if i := strings.Index(pair, "="); i > 0 {
-					AddAttr(node, pair[:i], strings.Trim(pair[i+1:], `"`))
+					AddAttr(node, pair[:i], strings.Trim(pair[i+1:], `"'`))
 				}
 			}
 			if p.level == p.prev.level {