# debugging - Paul Piper

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# DEBUGGING DIRECTORY

1 ENTRIES • TAGS • OPERATIONAL

2026.09.28 → [WHAT A DEBUGGER IS ACTUALLY TALKING TO](https://www.paul-piper.de/posts/debug-adapter-protocol-client-explainer/)

The debugger locked up the first time I inspected a DataFrame mid-session, and it took me a while to believe that the box-drawing characters in a pretty-printed table were the reason. │ ─ ⋯ …, the kind of Unicode a DataFrame uses to draw its own borders, sent over the wire as part of a debug response. The connection did not crash. It just quietly went out of sync and stopped answering, which is worse, because nothing tells you why.

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