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Re: [PATCH 1/2] trace: document how to specify multiple --trace patterns

From: Stefan Hajnoczi
Subject: Re: [PATCH 1/2] trace: document how to specify multiple --trace patterns
Date: Thu, 14 Jan 2021 14:02:17 +0000

On Wed, Jan 13, 2021 at 07:20:42PM -0500, John Snow wrote:
> On 1/13/21 6:45 PM, BALATON Zoltan wrote:
> > 
> > Please don't. That would break all scripts that already call qemu using
> > single dash options. Forcing everyone to edit their scripts is not nice.
> > How about also accepting single dash in qemu-img for consistency then
> > you can use whatever you want in docs as long as single dash still works
> > for consistency and backward compatibility.
> That's not what I meant -- I meant for documentation purposes. QEMU can keep
> accepting single dash, but we should standardize on the spelling for
> purposes of interactive messages, documentation, etc.

I wasn't aware of the fact that some of the utilities are sensitive to
'--' vs '-'! I'm in favor of consistently using '--' in documentation
but allowing both for backwards compatibility where '-' is currently

If we are in agreement, then let's:

1. Add a section to CODING_STYLE.rst or other developer documentation
   documenting this.

2. Convert existing documentation to use '--'. This will make it more
   consistent and also avoid confusion about '-' vs '--'.

John: Do you have time to do these things as part of your QEMU
command-line and API improvement work?


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