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

From: Johannes Schindelin <johannes.schindelin@gmx.de>
Date: Nov 1, 2019, 18:41 UTC
Message-ID: <nycvar.QRO.7.76.6.1911011940590.46@tvgsbejvaqbjf.bet>
In-Reply-To: <20191031154837.GB30187@sigill.intra.peff.net>

Hi,

On Thu, 31 Oct 2019, Jeff King wrote:

Show 21 quoted lines

> On Thu, Oct 31, 2019 at 11:26:30AM +0100, Johannes Schindelin wrote:
>
> > > 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().
> >
> > A valid concern!
> >
> > As per eac14f8909d (Win32: Thread-safe windows console output,
> > 2012-01-14), `write()` _implicitly_ gets the ANSI emulation of
> > `winansi.c`.
> >
> > So I think we're good.
> >
> > Thanks for thinking of all kinds of angles,
>
> Good. Thanks for humoring my wild speculation. :)

Of course!

> I remember being confused by this not too long ago, so I did a quick dig
> in the archive. And indeed, there was a confusing comment which caught
> me in 2016, and which you removed back then (via 3d0a83382f26). I even
> reviewed the patch. Maybe this time I will remember the outcome!

Heh, I won't fault you because I totally forgot about it myself.

Ciao, Dscho