codeant-ai-for-open-source[bot] commented on PR #38883:
URL: https://github.com/apache/superset/pull/38883#issuecomment-4135625558
## **Sequence Diagram**
This PR updates how adhoc filter diffs are formatted so that filters without
a comparator no longer show an undefined value, instead displaying only the
subject and operator while preserving normal formatting for filters with values.
```mermaid
sequenceDiagram
participant User
participant ChartControls
participant AlteredSliceTag
participant FormatValueHandler
User->>ChartControls: Change adhoc filter
ChartControls->>AlteredSliceTag: Send control diffs including filters
AlteredSliceTag->>FormatValueHandler: Format adhoc filter diff value
FormatValueHandler->>FormatValueHandler: Build string and skip empty
filter value
FormatValueHandler-->>AlteredSliceTag: Return formatted filter summary
text
AlteredSliceTag-->>User: Show updated chart change summary without
undefined value
```
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