git-send-email --cc-cmd

This new option allows an arbitrary "cmd" to generate per patch
file specific "Cc:"s.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

Documentation/git-send-email.txt

@@ -34,6 +34,12 @@ The --bcc option must be repeated for each user you want on the bcc list.
 +
 The --cc option must be repeated for each user you want on the cc list.
 
+--cc-cmd::
+	Specify a command to execute once per patch file which
+	should generate patch file specific "Cc:" entries.
+	Output of this command must be single email address per line.
+	Default is the value of 'sendemail.cccmd' configuration value.
+
 --chain-reply-to, --no-chain-reply-to::
 	If this is set, each email will be sent as a reply to the previous
 	email sent.  If disabled with "--no-chain-reply-to", all emails after
@@ -124,6 +130,9 @@ sendemail.aliasfiletype::
 	Format of the file(s) specified in sendemail.aliasesfile. Must be
 	one of 'mutt', 'mailrc', 'pine', or 'gnus'.
 
+sendemail.cccmd::
+	Command to execute to generate per patch file specific "Cc:"s.
+
 sendemail.bcc::
 	Email address (or alias) to always bcc.
 

git-send-email.perl

@@ -46,6 +46,9 @@ sub usage {
    --cc           Specify an initial "Cc:" list for the entire series
                   of emails.
 
+   --cc-cmd       Specify a command to execute per file which adds
+                  per file specific cc address entries
+
    --bcc          Specify a list of email addresses that should be Bcc:
 		  on all the emails.
 
@@ -157,13 +160,14 @@ sub format_2822_time {
 my ($quiet, $dry_run) = (0, 0);
 
 # Variables with corresponding config settings
-my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc);
+my ($thread, $chain_reply_to, $suppress_from, $signed_off_cc, $cc_cmd);
 
 my %config_settings = (
     "thread" => [\$thread, 1],
     "chainreplyto" => [\$chain_reply_to, 1],
     "suppressfrom" => [\$suppress_from, 0],
     "signedoffcc" => [\$signed_off_cc, 1],
+    "cccmd" => [\$cc_cmd, ""],
 );
 
 foreach my $setting (keys %config_settings) {
@@ -189,6 +193,7 @@ sub format_2822_time {
 		    "smtp-server=s" => \$smtp_server,
 		    "compose" => \$compose,
 		    "quiet" => \$quiet,
+		    "cc-cmd=s" => \$cc_cmd,
 		    "suppress-from!" => \$suppress_from,
 		    "signed-off-cc|signed-off-by-cc!" => \$signed_off_cc,
 		    "dry-run" => \$dry_run,
@@ -652,11 +657,26 @@ sub send_message
 		}
 	}
 	close F;
+
+	if ($cc_cmd ne "") {
+		open(F, "$cc_cmd $t |")
+			or die "(cc-cmd) Could not execute '$cc_cmd'";
+		while(<F>) {
+			my $c = $_;
+			$c =~ s/^\s*//g;
+			$c =~ s/\n$//g;
+			push @cc, $c;
+			printf("(cc-cmd) Adding cc: %s from: '%s'\n",
+				$c, $cc_cmd) unless $quiet;
+		}
+		close F
+			or die "(cc-cmd) failed to close pipe to '$cc_cmd'";
+	}
+
 	if (defined $author) {
 		$message = "From: $author\n\n$message";
 	}
 
-
 	send_message();
 
 	# set up for the next message