docs: clarify background job exit codes#7167
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Signed-off-by: Matthew Stanton <stantonmatthewj@gmail.com>
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clemyan
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Closes #6801.
This documents the current portable shell behavior for
foo & bar: background jobs are waited on, but they don't determine the script exit code. The exit code comes from the foreground command on the right.That matches the existing shell implementation and the current background-job tests; this PR makes the
yarn lint & yarn testexample explicit about the consequence.Verification:
node scripts/run-yarn.js test:unit packages/yarnpkg-shell -t "Background jobs" --runInBandnode scripts/run-yarn.js workspace @yarnpkg/docusaurus build(passes; existing Docusaurus broken-link/anchor and TypeDoc warnings are still emitted)node scripts/run-yarn.js test:lintnode scripts/run-yarn.js version check