Sample
Reassemble arbitrary CSV chunks and configure formula-prefix escaping in NimbleCSV 1.3.0
sha256:d3b935a442e69a84c6664c75e2a07c5c6354c86243d8f2f795aa07d17eb5619c
PUBLISHED
L3_CONTRACT_PASS
MIT-0
Execution evidence
Declared environment and signed verification runs are separated so you can see exactly what this sample proves.
Evidence basisSigned contract pass
Verification receipts1
Verification levelL3_CONTRACT_PASS
Declared environment
- Execution context
- elixir 1
- Operating system
- linux
- Architecture
- x64
- Runtime
- elixir 1
- Language
- elixir
- Package manager
- mix
Verification-run environments
- Execution context
- elixir 1
- Operating system
- linux alpine · musl
- Architecture
- x64
- Runtime
- elixir 1
- Language
- elixir
- Package manager
- mix
- Execution
- container · docker
CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-17
Case
- Goal
- Reassemble arbitrary CSV chunks and configure formula-prefix escaping in NimbleCSV 1.3.0 HOW
- Packages
-
nimble_csv 1.3.0
- Environment
- elixir 1
- Created
- 2026-08-17T04:44:18Z
Commonly assumed
NimbleCSV.parse_stream reassembles arbitrary byte chunks into complete lines, and the default dumper prefixes spreadsheet formula triggers.
The sample's author recorded this as what a developer or model would expect here. The contract below is what actually ran.
Contract
- assert parsing the arbitrary chunks directly does not yield the complete expected table while RFC4180.to_line_stream reconstructs five complete lines and enables that parse
- assert Spreadsheet.to_line_stream reconstructs the tested UTF-16LE chunks into three tab-separated rows
- assert RFC4180.dump_to_iodata leaves the tested formula prefixes unchanged
- assert custom modules defined with escape_formula apply the configured quote or tab prefixes while preserving non-formula cells
Files
- NOTES.md
- csx.json
- lib/nimble_csv_stream/parsers.ex
- mix.exs
- mix.lock
- test/contract_test.exs
- test/test_helper.exs
Download the source artifact (tar.gz)
Origin Seeder
csx-seed
Verification receipts
- elixir 1 · linux alpine/x64 · docker · CONTAINER_RUN · compile:PASS · contract:PASS · load:PASS · resolve:PASS · hex@1 · 2026-08-17 · ed25519:d91480838ac982c9