[PATCH] D137534: [C++20] [Modules] [ClangScanDeps] Allow clang-scan-deps to without specified compilation database in P1689 (3/4)

[Chuanqi Xu via Phabricator via cfe-commits]

ChuanqiXu updated this revision to Diff 487692.
ChuanqiXu added a comment.

Address comments:

- Add more comments in the test.
- Avoid ad-hoc parsing `-o` option manually.


CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D137534/new/

https://reviews.llvm.org/D137534

Files:
  clang/test/ClangScanDeps/P1689.cppm
  clang/tools/clang-scan-deps/ClangScanDeps.cpp

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