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Ran 12 Jul 2026 05:43PM UTC

Files 1211

Run time 47s

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Committed 12 Jul 2026 05:24PM UTC coverage: 58.65% (+0.001%) from 58.649%

Job # 29201948407.9

Build Type

push

github

Committed by

web-flow

Commit Message

Don't invalidate BUILD files on comment/whitespace changes (#23480)

Currently, `pants --changed-since` unnecessarily invalidates all targets
within a `BUILD` file when only whitespace or unrelated comment lines
are modified. The system falls back to a blanket invalidation because it
assumes the entire file's structural integrity changed.

### Solution
When `--changed-since` interacts with the SCM, it already populates
`sources_blocks` with the precise modified lines. However, the fallback
condition in `find_owners` was still applying a blanket invalidation to
all targets in the modified `BUILD` file, ignoring this block-level
precision.

This PR adds a guard to skip this blanket invalidation if
`sources_blocks` are available for the file, allowing `block_owners` to
correctly filter only the affected targets natively.

Coverage Stats

36522 of 62271 relevant lines covered (58.65%)

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pantsbuild / pants / 29201948407 / 9
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main: 93%

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pantsbuild / pants / 29201948407 / 9
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main: 93%

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