Add a .editorconfig file

[Frizlab]

I use (the superior) tab indentation in Xcode, but this project uses spaces for indentation.
Having a .editorconfig file at the root of the project makes Xcode automatically apply the correct config for this project.

(PS: I’m trolling regarding the tabs vs. spaces subject as it is a common flame war, but I’m not serious about it! Except that tabs are indeed objectively better, for accessibility.)

[mattesmohr]

I have no opinion on that matter, to be honest. As far I can tell, if other packages have a editorconfig set up, it uses spaces instead of tabs. But, I don't know actually.

At least I would like to understand the topic/file a bit more, before we add this to the package.

[Frizlab]

Xcode 16 added support for the .editorconfig file.

The file allows customizing supporting editors (I’m 99% certain VSCode supports it, and a lot of other editors do too) wrt the indentation choices. The indentation settings chosen by the user are overridden for the project by the values in the .editorconfig file.
This allows working on different projects with different coding-styles without having to change the editor settings all the time.

In your case, currently indent is 4 spaces, which is represented with the indent_style = space, indent_size = 4 and tab_width = 4 lines in the .editorconfig file I propose.

Traditionally in Xcode the settings were part of the xcodeproj directly, but with SPM we’re getting rid of the xcodeproj, so Apple added support for the .editorconfig file in Xcode.

[mattesmohr]

I am fine with the file. Just some question out of curiosity. The last two settings I beg to differ.