Subject: Re: Apology/Bug report: git-send-email sends everything on Ctrl+C

From: Sam Vilain <[email-masked]>
Date: Wed, 26 May 2010 21:27:15 +1200

Michael J Gruber wrote:
> > > Hard to know what could have possibly stopped this from happening.
> > > PEBKAC.
> > Perhaps git can be smart and ask for confirmation for huge (>20 ?)
> > patchsets.
> to be overriden by an option "--no-villain"...
> 
> Sorry, bad joke, but couldn't resist. Feel free to pick on my name ;)

I went with the simpler and pre-existing --confirm=never :-)

Subject: [PATCH] send-email: confirm for really large patch sets

It is possible to send a lot of e-mails using quite simple user errors
with git send-email; if they were not intended this could be quite a
lot of spam.  Ask a final question if there are a lot of messages
before sending.

Signed-off-by: Sam Vilain <[email-masked]>
---
 untested: after what just happens there is no way I'm testing this :-)

 git-send-email.perl |   13 +++++++++++++
 1 files changed, 13 insertions(+), 0 deletions(-)

diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index 12622fc..093b7f2 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -257,6 +257,11 @@ Administering
 Default is the value of 'sendemail.confirm' configuration value; if that
 is unspecified, default to 'auto' unless any of the suppress options
 have been specified, in which case default to 'compose'.
++
+If you are sending a very large patch sequence (more than 20 parts),
+you will be asked for a second final confirmation before anything is
+sent.  This can be suppressed by setting this configuration value to
+'never'.
 
 --dry-run::
        Do everything except actually send the emails.
diff --git a/git-send-email.perl b/git-send-email.perl
index 111c981..2775506 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -1096,6 +1096,19 @@ $references = $initial_reply_to || '';
 $subject = $initial_subject;
 $message_num = 0;
 
+if ($needs_confirm ne "never" and @files > 20) {
+	$_ = ask(
+		"That's a big patch set - ".@files." parts.  "
+		."Are you sure you want to do this? ([y]es|[n]o): ",
+		valid_re => qr/^(?:yes|y|no|n)/i,
+		default => "n",
+	       );
+	if (/^n/i) {
+		cleanup_compose_files();
+		exit(0);
+	}
+}
+
 foreach my $t (@files) {
 	open(F,"<",$t) or die "can't open file $t";
 
-- 
1.7.1.rc2.333.gb2668