What
When Claude Code is connected to your editor (IDE), it can attach the lines you have selected there to your conversation. It now skips that attachment if the file also fails an added check on its real path. The real path is the file's actual location after following any shortcuts or symbolic links. Previously only the first path permission check applied.
Why
This stops a selection in a file outside your allowed workspace from reaching Claude.
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The writer flagged doubt
Exactly what the added real-path check tests is not stated.