Under the hood
A new validator lets comma/plus-separated identifier lists pass through telemetry unredacted
What
Claude Code sanitizes telemetry data before sending it, redacting anything that looks like it could contain sensitive information. A new validator has been added that recognizes a specific pattern: one or more alphanumeric identifiers (each starting with a letter, up to 64 characters, allowing underscores), separated by commas or plus signs. Values matching this pattern are now treated as safe and passed through as-is; anything else is redacted as "nonconforming".
Why
This lets telemetry preserve useful structured values, like lists of identifiers, without redacting them, while still catching and hiding anything that doesn't fit the expected shape.