Re: [PATCH v4 0/2] launch_editor(): indicate that Git waits for user input

> On Wed, Nov 29, 2017 at 06:35:16PM +0000, Thomas Adam wrote:
> 
> > On Wed, Nov 29, 2017 at 03:37:50PM +0100, lars.schneider@autodesk.com wrote:
> > > +		if (print_waiting_for_editor) {
> > > +			fprintf(stderr, _("hint: Waiting for your editor input..."));
> > >  			fflush(stderr);
> > 
> > Just FYI, stderr is typically unbuffered on most systems I've used, and
> > although the call to fflush() is harmless, I suspect it's not having any
> > effect.  That said, there's plenty of other places in Git which seems to think
> > fflush()ing stderr actually does something.
> 
> I'd prefer to keep them (including this one), even if they are noops on
> most platforms, because:
> 
>   1. They serve as a note for readers of the code that it's important
>      for the output to have been printed immediately.
> 
>   2. We build on some funny and antique platforms. I wouldn't be
>      surprised if there's one that line buffers by default. Or even a
>      modern system with funny settings (e.g., using the GNU stdbuf
>      tool).
> 
> (I know you said later you don't think this case needs to be removed,
> but I want to make it clear I think it's a reasonable project-wide
> policy to not assume we we know how stderr is buffered).