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Fix Bash rlocation failure with stricter Bash options #16755

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@fmeum fmeum commented Nov 12, 2022

When run in the context of the bazel-skylib unit test setup, the new repo mapping logic in the Bash runfiles library failed due to a non-matching grep in a pipe. Fix this by using a wrapper around grep throughout that does not exit with exit code 1 if there is no match.

Fixes bazelbuild/bazel-skylib#411 (comment)

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fmeum commented Nov 12, 2022

@c-parsons as you set up the unit test framework in bazel-skylib: I haven't been able to reproduce the failure of $(grep ... | ...) that I see over in bazel-skylib's unit tests when the grep doesn't match anything here in runfiles_test.sh. Even with set -o errexit, set -e, set -o pipefail` I don't get this behavior. Do you know how I could enable it so that this fix has test coverage?

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fmeum commented Nov 12, 2022

@shs96c Could you verify that this fixes the issue you are seeing?

When run in the context of the bazel-skylib unit test setup, the new
repo mapping logic in the Bash runfiles library failed due to a
non-matching grep in a pipe. Fix this by using a wrapper around grep
throughout that does not exit with exit code 1 if there is no match.
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shs96c commented Nov 13, 2022

That does appear to fix the problem.

@sgowroji sgowroji added team-ExternalDeps External dependency handling, remote repositiories, WORKSPACE file. awaiting-review PR is awaiting review from an assigned reviewer labels Nov 14, 2022
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fmeum commented Nov 15, 2022

@bazel-io flag

@bazel-io bazel-io added the potential release blocker Flagged by community members using "@bazel-io flag". Should be added to a release blocker milestone label Nov 15, 2022
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@bazel-io fork 6.0.0

@bazel-io bazel-io removed the potential release blocker Flagged by community members using "@bazel-io flag". Should be added to a release blocker milestone label Nov 15, 2022
Wyverald pushed a commit that referenced this pull request Nov 15, 2022
When run in the context of the bazel-skylib unit test setup, the new repo mapping logic in the Bash runfiles library failed due to a non-matching grep in a pipe. Fix this by using a wrapper around grep throughout that does not exit with exit code 1 if there is no match.

Fixes bazelbuild/bazel-skylib#411 (comment)

Closes #16755.

PiperOrigin-RevId: 488749744
Change-Id: I087b03d9e95ba27a409c551bdc27d0027919a0fe
ShreeM01 pushed a commit that referenced this pull request Nov 15, 2022
When run in the context of the bazel-skylib unit test setup, the new repo mapping logic in the Bash runfiles library failed due to a non-matching grep in a pipe. Fix this by using a wrapper around grep throughout that does not exit with exit code 1 if there is no match.

Fixes bazelbuild/bazel-skylib#411 (comment)

Closes #16755.

PiperOrigin-RevId: 488749744
Change-Id: I087b03d9e95ba27a409c551bdc27d0027919a0fe

Co-authored-by: Fabian Meumertzheim <[email protected]>
@fmeum fmeum deleted the stricter-bash-runfiles branch November 16, 2022 00:25
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