[llvm-branch-commits] [clang] [clang-tools-extra] [flang] [llvm] [compiler-rt] [libc] [OptTable] Make new lines in help text respect indentation (PR #74880)

[Fangrui Song via llvm-branch-commits]

MaskRay wrote:

Thanks. This is an improvement.

Some tests may need `FileCheck --match-full-lines --strict-whitespace` to test the whitespace change
https://llvm.org/docs/CommandGuide/FileCheck.html#cmdoption-FileCheck-strict-whitespace

Sometimes we switch to the following check prefix style:
```
#      CHECK:xxx
# CHECK-NEXT:xxx
# CHECK-NEXT:xxx
```

https://github.com/llvm/llvm-project/pull/74880