dist: preserve line boundaries when merging config fragments · Pull Request !27 · OpenCloudOS/OpenCloudOS-Kernel-Stream

# dist: preserve line boundaries when merging config fragments

Target: `OpenCloudOS/OpenCloudOS-Kernel-Stream`, `ocks-2401` at `196e5ec5007b3ae6e0dcbd00d796f1cd755e0523`.

A configuration fragment without a final newline is valid Kconfig input. `populate_configs()` concatenates it directly with the next fragment, joining assignments or swallowing the next assignment into a comment. The function can report success while the generated configuration loses requested options.

Append a newline after each default or architecture fragment. Add a regression using the actual library and real files, covering three architecture labels, unterminated assignments and comments, empty fragments, string values and override order. The production fix adds two lines.

Fixes: `cf5d03932d49` (`dist: initial support`). The same source blob is present in `ocks-2303` and `ocks-2401`; this is a shared dist issue. It is not a Linux upstream cherry-pick.

## Reproduction and validation

```sh
bash dist/scripts/tests/config-fragments.sh
bash -n dist/scripts/lib-config.sh dist/scripts/tests/config-fragments.sh
git diff --check
```

Ubuntu 22.04 x86_64 / GNU Bash verification:

- Original source: the new regression fails on an unterminated default fragment; the newline-terminated control passes.
- Fixed source: **7/7 cases pass**, independently against both source snapshots. The fixed production blob matches the submitted source tree.
- Same issue independently verified in current OCK at `d7891c3e653c`: its complete `gen-configs.sh` and real Kconfig reader lose `CONFIG_DEFAULT_HOSTNAME` in the original assignment/comment cases and preserve it with the fix. Tested x86_64, aarch64 and riscv64 configurations; the original control and all fixed cases exit 0. These OCK results support user impact but are not claimed as full Kernel-Stream build results.
- The corresponding independent OCK patch passes all five existing dist test scripts and the expanded library regression (8 new cases, including its existing read-error behavior).
- Source `checkpatch.pl --no-tree --strict`: **0 errors / 1 warning**, the new-test MAINTAINERS reminder.

Source commit: `1e0ce1c8748efe8163bdeaced3e36b29dea70531`. Author and Signed-off-by: `PiliLily <mao18349155374@163.com>`.

No complete kernel build, boot, RPM build/install or hardware test is claimed. Architecture labels in the regression are fixture products; OCK's non-native Kconfig generation uses its dummy compiler helpers. AI assistance was used for investigation, implementation and test preparation; reported results come from actual runs.

类型	指派人员	状态
审查	OpenCloudOS	进行中 (0/1人)
测试	OpenCloudOS	进行中 (0/1人)

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