src: formatting of C++ files

[VoltrexKeyva]

The Node.js project has a .clang-format file to keep the C++ files in a consistent format, but it seems to be mostly unused as most of the C++ files in the src/ directory does not seem to have these formatting rules applied to them, is there a specific reason for this?

Are there any formatting rules specific to the Node.js C++ codebase styling rules that tools like clang-format can't already follow?

[bnoordhuis]

clang-format is run on diffs. New code is formatted, old code is untouched, that's the basic idea. #16122 (comment) is why.

[addaleax]

Are there any formatting rules specific to the Node.js C++ codebase styling rules that tools like clang-format can't already follow?

I think https://github.com/nodejs/node/blob/main/doc/contributing/cpp-style-guide.md does have some rules that the formatter doesn't currently enforce, and maybe some that it can't do based on formatting alone.

[VoltrexKeyva]

I see, I suppose it's understandable mainly because of the extreme amount of merge conflicts it can cause.

And about the formatting rules I was generally talking about rules that doesn't need to be manually applied/reviewed (such as naming conventions), which clang-format can already cover all of them AFAIK.

But closing due to the first reason.