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t/chainlint: add chainlint "one-liner" test cases The --chain-lint option uses heuristics and knowledge of shell syntax to detect broken &&-chains in subshells by pure textual inspection. The heuristics handle a range of stylistic variations in existing tests (evolved over the years), however, they are still best-guesses. As such, it is possible for future changes to accidentally break assumptions upon which the heuristics are based. Protect against this possibility by adding tests which check the linter itself for correctness. In addition to protecting against regressions, these tests help document (for humans) expected behavior, which is important since the linter's implementation language ('sed') does not necessarily lend itself to easy comprehension. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2018-07-11 06:46:37 +00:00
! (foo && bar) &&
! (foo && bar) >baz &&
chainlint.sed: drop unnecessary distinction between ?!AMP?! and ?!SEMI?! >From inception, when chainlint.sed encountered a line using semicolon to separate commands rather than `&&`, it would insert a ?!SEMI?! annotation at the beginning of the line rather ?!AMP?! even though the &&-chain is also broken by the semicolon. Given a line such as: ?!SEMI?! cmd1; cmd2 && the ?!SEMI?! annotation makes it easier to see what the problem is than if the output had been: ?!AMP?! cmd1; cmd2 && which might confuse the test author into thinking that the linter is broken (since the line clearly ends with `&&`). However, now that the ?!AMP?! an ?!SEMI?! annotations are inserted at the point of breakage rather than at the beginning of the line, and taking into account that both represent a broken &&-chain, there is little reason to distinguish between the two. Using ?!AMP?! alone is sufficient to point the test author at the problem. For instance, in: cmd1; ?!AMP?! cmd2 && cmd3 it is clear that the &&-chain is broken between `cmd1` and `cmd2`. Likewise, in: cmd1 && cmd2 ?!AMP?! cmd3 it is clear that the &&-chain is broken between `cmd2` and `cmd3`. Finally, in: cmd1; ?!AMP?! cmd2 ?!AMP?! cmd3 it is clear that the &&-chain is broken between each command. Hence, there is no longer a good reason to make a distinction between a broken &&-chain due to a semicolon and a broken chain due to a missing `&&` at end-of-line. Therefore, drop the ?!SEMI?! annotation and use ?!AMP?! exclusively. Signed-off-by: Eric Sunshine <sunshine@sunshineco.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
2021-12-13 06:30:53 +00:00
! (foo; ?!AMP?! bar) &&
! (foo; ?!AMP?! bar) >baz
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