Re: [PATCH] include/asm-arm/: Spelling fixes

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

Jeff King <peff@peff.net> writes:

> Ah. The problem is that git-send-email unconditionally adds a
> message-id. Usually git-format-patch doesn't add one, but for obvious
> reasons, it must when doing --thread. Here is a fix.

> diff --git a/git-send-email.perl b/git-send-email.perl
> index 1d6f466..083466a 100755
> --- a/git-send-email.perl
> +++ b/git-send-email.perl
> @@ -580,7 +580,7 @@ sub send_message
>  		$ccline = "\nCc: $cc";
>  	}
>  	my $sanitized_sender = sanitize_address($sender);
> -	make_message_id();
> +	make_message_id() unless defined($message_id);

Isn't this called inside a loop?  If the outgoing message does not
originally have "Message-Id:", does the loop correctly reinitialize
$message_id to undef, or does this change make everybody reuse the same
$message_id over and over again?

I have a feeling that --thread to format-patch is a misfeature.  Why is
it needed if you are feeding the output to send-email?

I wonder if stripping existing "Message-Id:" away just like we strip
away "Date:" from @xh would be a much saner fix.