From: Jeff King <peff@peff.net>
Date: Wed, 30 Nov 2011 06:44:01 GMT
Subject: Re: [PATCH] honour GIT_ASKPASS for querying username in git-svn
Message-ID: <20111130064401.GC5317@sigill.intra.peff.net>
In-Reply-To: <4ED0CE8B.70205@tu-clausthal.de>

On Sat, Nov 26, 2011 at 12:33:31PM +0100, Sven Strickroth wrote:

> diff --git a/git-svn.perl b/git-svn.perl
> index e30df22..d7aeb11 100755
> --- a/git-svn.perl
> +++ b/git-svn.perl
> @@ -4361,7 +4361,14 @@ prompt:
>  	      "(R)eject, accept (t)emporarily or accept (p)ermanently? " :
>  	      "(R)eject or accept (t)emporarily? ";
>  	STDERR->flush;
> -	$choice = lc(substr(<STDIN> || 'R', 0, 1));
> +	if (exists $ENV{GIT_ASKPASS}) {
> +		print STDERR "\n";
> +		open(PH, "-|", $ENV{GIT_ASKPASS}, "Certificate unknown");
> +		$choice = lc(substr(<PH> || 'R', 0, 1));
> +		close(PH);
> +	} else {
> +		$choice = lc(substr(<STDIN> || 'R', 0, 1));
> +	}

Why is the prompt simply "Certificate unknown"? Shouldn't it mention
that the right answers are "(R)eject, accept (t)emporarily, ..."?

That aside, I think this is an improvement over the current code. But
having just been looking at regular git's askpass code, I notice there
are some subtle differences:

  1. Regular git will also respect SSH_ASKPASS

  2. Regular git will ignore an askpass variable that is set but empty.

Perhaps git-svn should be refactored to have a reusable "prompt"
function that respects askpass and tries to behave like C git? It could
even go into the Git perl module.

-Peff