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A segment playlist resolves byte-range tags into per-segment Range values: carriage returns from CRLF playlists are trimmed before parsing · case 02

A segment playlist resolves byte-range tags into per-segment Range values: carriage returns from CRLF playlists are trimmed before parsing.

Member previewVariant 2 · 3 implementations · 15 checks per implementation

Case contract

x is a list of playlist lines. Lines are trimmed; blank lines skipped; every other line starting with # is a tag or comment. #EXT-X-BYTERANGE:n[@o] (ASCII decimals) applies only to the next URI line. Without @o the range continues at the byte after the immediately previous segment, which must be a sub-range of the same URI string; otherwise null. A URI without a byte-range tag is a whole-resource segment [uri,null] and breaks any continuation chain. Zero-length sub-ranges and malformed tags return null. Return [uri,inclusive bytes=a-b or null] rows.

Why this case matters

Range responses combine representation identity, conditional requests, framing, and partial-object state.

One recorded failure

Sample boundary fixture

This sample comes from the broken implementation of a controlled reproducer.

Boundary fixture	Actual	Expected	Outcome
crlf-lines fixture 10	`null`	`[["a.ts", "bytes=0-9"], ["a.ts", "bytes=10-13"]]`	Failed

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This record includes three runnable implementations, regression fixtures, execution results, and source hashes.

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