Re: [Qemu-devel] [PATCH v3 0/7] cpu: add device_add foo-x86_64-cpu support

[Junio C Hamano <gitster@pobox.com>]

Jeff King <peff@peff.net> writes:

> On Thu, Feb 05, 2015 at 11:29:07AM -0800, Junio C Hamano wrote:
>
>> Eric Blake <eblake@redhat.com> writes:
>> 
>> > On 02/05/2015 04:49 AM, Stefan Hajnoczi wrote:
>> >> On Wed, Jan 14, 2015 at 03:27:23PM +0800, Zhu Guihua wrote:
>> >>> This series is based on the previous patchset from Chen Fan:
>> >>> https://lists.nongnu.org/archive/html/qemu-devel/2014-05/msg02360.html
>> >> 
>> >> This email has an invalid charset:
>> >> Content-Type: text/plain; charset="y"
>> >> 
>> >> I guess you entered "y" when asked how the message was encoded.
>> >> 
>> >> Please don't do that, it means we can only guess at the charset.
>> >
>> > In the past, people made a similar problem when 'git send-email' was
>> > asking if a message was in-reply-to something else (the number of
>> > messages incorrectly threaded to a message-id of 'y' or 'n' was evidence
>> > of the poor quality of the question).  git.git commit 51bbccfd1b4a
>> > corrected that problem.  Sounds like charset encoding is another case
>> > where the interactive parser should be taught to balk at nonsense
>> > encoding answers?
>> 
>> I think I answered this in $gmane/263354; care to come up with a
>> plausible valid_re?  It is inpractical to attempt to cover all valid
>> charset names, so whatever you do I'd imagine you would want to pass
>> the confirm_only parameter set to true.
>
> Would "length() > 1" be enough[1]? Or are people really typing "yes" and
> not just "y"?
>
> I cannot imagine a charset name that is smaller than two characters. It
> may be that there are none smaller than 4, and we could cut it off
> there. Googling around for some lists of common charsets, it seems like
> that might be plausible (but not any larger; "big5" is 4 characters, and
> people may spell "utf8" without the hyphen).
>
> -Peff
>
> [1] Of course, to match the existing regex code, we may want to spell
>     this as "/../" or "/..../".

Perhaps. Just in case there were shorter ones, something like this
with confirm_only to allow them to say "Yes, I do mean 'xx'"?

 git-send-email.perl | 1 +
 1 file changed, 1 insertion(+)

diff --git a/git-send-email.perl b/git-send-email.perl
index 3092ab3..848f176 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -752,6 +752,7 @@ sub file_declares_8bit_cte {
 		print "    $f\n";
 	}
 	$auto_8bit_encoding = ask("Which 8bit encoding should I declare [UTF-8]? ",
+				  valid_re => qr/.{4}/, confirm_only => 1,
 				  default => "UTF-8");
 }