that additional escape logic was not obsolete...

Author: RandomHashTags

Sources/HTMLKitUtilities/HTMLKitUtilities.swift

@@ -64,6 +64,7 @@ public extension String {
     }
     /// Escapes all occurrences of source-breaking HTML attribute characters
     mutating func escapeHTMLAttributes() {
+        self.replace("\\\"", with: """)
         self.replace("\"", with: """)
         self.replace("'", with: "&#39")
     }

Tests/HTMLKitTests/ElementTests.swift

@@ -36,6 +36,9 @@ struct ElementTests {
 
         string = #html(div(attributes: [.title("<p>")], "<p></p>"))
         #expect(string == expected_result)
+
+        string = #html(p("What's 9 + 10? \"21\"!"))
+        #expect(string == "<p>What&#39s 9 + 10? &quot;21&quot;!</p>")
     }
 }