Re: [PATCH v3 1/1] vreportf(): avoid relying on stdio buffering

> On Wed, Oct 30, 2019 at 09:54:52AM +0100, Johannes Schindelin wrote:
>
> > > One non-bikeshed question: would fprintf() on some platforms have sent
> > > "\r\n", which is no longer happening with our write()? Do we need to
> > > care about that?
> >
> > I am not aware of any platform where `fprintf()` would automatically
> > transform `\n` to `\r\n`. Not unless the `FILE *` in question has been
> > opened with the `t` flag. And I am rather certain that `stderr` is not
> > opened with that flag. And if it was, I would force it off in Git for
> > Windows.
>
> OK, thanks. You guessed the platform I was thinking of. :)
>
> Another more far-fetched one: IIRC our stdio wrappers on Windows do some
> magic to convert ANSI color codes into actual terminal codes. Could that
> be a problem here? I think we'd kill off any color codes in the actual
> message due to the control-code replacement. In theory the prefix could
> have them. I don't think any code does now, but the PUSH_COLOR_ERROR
> stuff in builtin/push.c is getting close. I wouldn't be surprised for
> that to eventually get folded into error().