[clang] [clang-format] Add null-terminated path option (#123921) (PR #123926)

[Nikolaos Chatzikonstantinou via cfe-commits]

createyourpersonalaccount wrote:

> > > This seems reasonable to me, but wait for the others, maybe @owenca
> > 
> > 
> > I'm wondering if `-0` should turn off all informational messaging as well and _only_ print the paths. As it is, it will print things like _Running clang-format on the following files:_, even if a null-separated list of files follows.
> > So right now the usage would be (example)
> > ```shell
> > git clang-format --staged -0 | tail -n +2 | xargs -0 git add
> > ```
> > 
> > 
> >     
> >       
> >     
> > 
> >       
> >     
> > 
> >     
> >   
> > but perhaps it should not print informational messages and have the usage be simplified:
> > ```shell
> > git clang-format --staged -0 | xargs -0 git add
> > ```
> 
> With that I can see why you don't indent. But you changed only the format of the file name output.

What else should change?

https://github.com/llvm/llvm-project/pull/123926