yaooqinn commented on PR #52084:
URL: https://github.com/apache/spark/pull/52084#issuecomment-3232006836
> Not escaped app name could lead to bad thing in the web ui
Can you show us a bad case you've met?
Based on a local test below, it looks like the AS-IS behavior makes sense to
me without escaping.
```scala
scala> org.apache.commons.text.StringEscapeUtils.escapeHtml4("ß")
val res0: String = ß
```
## bin/spark-shell --name ß
<img width="124" height="33" alt="image"
src="https://github.com/user-attachments/assets/e9421cfc-4c85-466b-b878-46c9c312d652";
/>
<img width="973" height="68" alt="image"
src="https://github.com/user-attachments/assets/a615eb27-bd72-400e-9934-d8e6f82d676a";
/>
## bin/spark-shell --name 'ß'
<img width="169" height="39" alt="image"
src="https://github.com/user-attachments/assets/6653eace-7a33-45f3-92a3-f1cbdd6e2b40";
/>
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