feedparser-rs handles entities in GUIDs differently from feedparser-py

[fazalmajid]

Bug Description

When parsing the Sidequested RSS (https://sidequested.com/feed/), I noticed feedparser-py and feedparser-rs give different GUIDs, thus causing false positives and duplicate posts to appear in my feed reader. The root cause is that the feedparser codes does not decode entities thrown by Quick-XML, and thus:

• feeparser-py: https://sidequested.com/?post_type=webcomic1&p=3172
• feedparser-rs: https://sidequested.com/?post_type=webcomic1p=3172

Steps to Reproduce

fptest.py

Expected Behavior

Same behavior as feedparser-py

Feed Sample

<?xml version="1.0"?>
    <rss version="2.0">
        <channel>
            <item>
                <guid isPermaLink="false">https://sidequested.com/?post_type=webcomic1&#038;p=3172</guid>
            </item>
        </channel>
    </rss>

Platform

Python (feedparser-rs-py)

Version

0.4.3

Environment

• OS: Ubuntu Linux 25.10
• Rust: 1.93.1
• Python: 3.12

Additional Context

I am preparing a PR with the fix