Is it typical vim style to use a space after # in C files? That seems like a lot of unnecessary churn in the first file.
[edit] Aaand I'm embarrassed about having made the first comment a negative one. D'oh. But, I do like the Cosmic Cutie! Even if Douglas Adams didn't. Funny patch, yes.
That's not the problem. The problem is the person making the PR projecting their own style choices instead of following the project's. They explicitly changed other contributors' code in a negative (stylistic) way.
The space following the "#" is meant to signify that the preprocessor directive is nested one layer deep. You can see that this style is used in other files, like here: https://github.com/vim/vim/blob/master/src/gui.c#L40-L42
So no, I think this is Bram bringing one file's indentation style in line with the rest of the project.
[edit] Aaand I'm embarrassed about having made the first comment a negative one. D'oh. But, I do like the Cosmic Cutie! Even if Douglas Adams didn't. Funny patch, yes.