From: Junio C Hamano <gitster@pobox.com>
Date: Mon, 03 Mar 2014 18:58:58 GMT
Subject: Re: [PATCH] git-config: document interactive.singlekey requires Term::Readkey
Message-ID: <xmqq1tyjqfbh.fsf@gitster.dls.corp.google.com>
In-Reply-To: <6157736903dbcb3359eda07eff6f0faf832ef256.1393790234.git.simon@ruderich.org>

Simon Ruderich <simon@ruderich.org> writes:

> Most distributions don't require Term::Readkey as dependency,
> leaving the user to wonder why the setting doesn't work.
>
> Signed-off-by: Simon Ruderich <simon@ruderich.org>

Thanks, but is it true that interactive.singlekey "requries"
Term::ReadKey?

The relevant part of git-add--interactive reads like so:

if ($repo->config_bool("interactive.singlekey")) {
	eval {
		require Term::ReadKey;
		Term::ReadKey->import;
		$use_readkey = 1;
	};
	eval {
		require Term::Cap;
		my $termcap = Term::Cap->Tgetent;
		foreach (values %$termcap) {
			$term_escapes{$_} = 1 if /^\e/;
		}
		$use_termcap = 1;
	};
}

The implementation of prompt_single_character sub wants to use
ReadKey, but can still let the user interact with the program by
falling back to a cooked input when it is not available, so perhaps
a better fix might be something like this:

        if (!$use_readkey) {
        	print STDERR "missing Term::ReadKey, disabling interactive.singlekey\n";
        }

inside the above if() that prepares $use_readkey?

You also misspelled the package name it seems ;-)