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[PATCH] send-email: handle multiple Cc addresses when reading mbox message

From
Jay Soffian <jaysoffian@gmail.com>
Date
Feb 13, 2009, 23:05 UTC
Message-ID
<1234566313-36478-1-git-send-email-jaysoffian@gmail.com>
From: Jay Soffian <jaysoffian@gmail.com>

When git format-patch is given multiple --cc arguments, it generates a Cc header that looks like:

 Cc: first@example.com,
     second@example.com,
     third@example.com

Before this commit, send-email was unable to handle such a message. First, it didn't know how to handle a header split across multiple lines. Second, it couldn't handle multiple comma-separated addresses, even if they were provided all on a single Cc: line.

This patch teaches it to unfold header lines by pre-processing the header before extracting any of its fields. It also teaches it to split the Cc line using Mail::Address if available, otherwise it just splits on a simple \s*,\s* regular expression.

Also, conditionally use Mail::Address to handle the response to the "Who should the emails be sent to?" prompt.

Signed-off-by: Jay Soffian <jaysoffian@gmail.com>
---
This message which you are reading was generated with:
$ git format-patch --cc="Ryan Anderson <ryan@michonline.com>" \
  --cc=gitster@pobox.com -s -1
And sent with:
$ git send-email --from 'Jay Soffian <jaysoffian@gmail.com>' \
  --to git@vger.kernel.org  --cc 'Jay Soffian <jaysoffian@gmail.com>'
Before this patch, send-email would not have sent it properly. :-)
j.
 git-send-email.perl   |  150 +++++++++++++++++++++++++++---------------------
 t/t9001-send-email.sh |   22 +++++--
 2 files changed, 99 insertions(+), 73 deletions(-)
diff --git a/git-send-email.perl b/git-send-email.perl
index 77ca8fe..cde294c 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -126,6 +126,7 @@ sub format_2822_time {
 }
 
 my $have_email_valid = eval { require Email::Valid; 1 };
+my $have_mail_address = eval { require Mail::Address; 1 };
 my $smtp;
 my $auth;
 
@@ -360,6 +361,14 @@ foreach my $entry (@bcclist) {
 	die "Comma in --bcclist entry: $entry'\n" unless $entry !~ m/,/;
 }
 
+sub parse_address_line {
+	if ($have_mail_address) {
+		return map { $_->format } Mail::Address->parse($_[0]);
+	} else {
+		return split_addrs($_[0]);
+	}
+}
+
 sub split_addrs {
 	return quotewords('\s*,\s*', 1, @_);
 }
@@ -593,7 +602,7 @@ if (!@to) {
 	}
 
 	my $to = $_;
-	push @to, split_addrs($to);
+	push @to, parse_address_line($to);
 	$prompting++;
 }
 
@@ -920,88 +929,97 @@ foreach my $t (@files) {
 	@cc = @initial_cc;
 	@xh = ();
 	my $input_format = undef;
-	my $header_done = 0;
+	my @header = ();
 	$message = "";
+	# First unfold multiline header fields
 	while(<F>) {
-		if (!$header_done) {
-			if (/^From /) {
-				$input_format = 'mbox';
-				next;
+		last if /^\s*$/;
+		if (/^\s+\S/ and @header) {
+			chomp($header[$#header]);
+			s/^\s+/ /;
+			$header[$#header] .= $_;
+	    } else {
+			push(@header, $_);
+		}
+	}
+	# Now parse the header
+	foreach(@header) {
+		if (/^From /) {
+			$input_format = 'mbox';
+			next;
+		}
+		chomp;
+		if (!defined $input_format && /^[-A-Za-z]+:\s/) {
+			$input_format = 'mbox';
+		}
+
+		if (defined $input_format && $input_format eq 'mbox') {
+			if (/^Subject:\s+(.*)$/) {
+				$subject = $1;
 			}
-			chomp;
-			if (!defined $input_format && /^[-A-Za-z]+:\s/) {
-				$input_format = 'mbox';
+			elsif (/^From:\s+(.*)$/) {
+				($author, $author_encoding) = unquote_rfc2047($1);
+				next if ($suppress_cc{'author'});
+				printf("(mbox) Adding cc: %s from line '%s'\n",
+					$1, $_) unless $quiet;
+				push @cc, $1;
 			}
-
-			if (defined $input_format && $input_format eq 'mbox') {
-				if (/^Subject:\s+(.*)$/) {
-					$subject = $1;
-
-				} elsif (/^(Cc|From):\s+(.*)$/) {
-					if (unquote_rfc2047($2) eq $sender) {
+			elsif (/^Cc:\s+(.*)$/) {
+				foreach my $addr (parse_address_line($1)) {
+					if (unquote_rfc2047($addr) eq $sender) {
 						next if ($suppress_cc{'self'});
-					}
-					elsif ($1 eq 'From') {
-						($author, $author_encoding)
-						  = unquote_rfc2047($2);
-						next if ($suppress_cc{'author'});
 					} else {
 						next if ($suppress_cc{'cc'});
 					}
 					printf("(mbox) Adding cc: %s from line '%s'\n",
-						$2, $_) unless $quiet;
-					push @cc, $2;
+						$addr, $_) unless $quiet;
+					push @cc, $addr;
 				}
-				elsif (/^Content-type:/i) {
-					$has_content_type = 1;
-					if (/charset="?([^ "]+)/) {
-						$body_encoding = $1;
-					}
-					push @xh, $_;
-				}
-				elsif (/^Message-Id: (.*)/i) {
-					$message_id = $1;
-				}
-				elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
-					push @xh, $_;
-				}
-
-			} else {
-				# In the traditional
-				# "send lots of email" format,
-				# line 1 = cc
-				# line 2 = subject
-				# So let's support that, too.
-				$input_format = 'lots';
-				if (@cc == 0 && !$suppress_cc{'cc'}) {
-					printf("(non-mbox) Adding cc: %s from line '%s'\n",
-						$_, $_) unless $quiet;
-
-					push @cc, $_;
-
-				} elsif (!defined $subject) {
-					$subject = $_;
+			}
+			elsif (/^Content-type:/i) {
+				$has_content_type = 1;
+				if (/charset="?([^ "]+)/) {
+					$body_encoding = $1;
 				}
+				push @xh, $_;
 			}
-
-			# A whitespace line will terminate the headers
-			if (m/^\s*$/) {
-				$header_done = 1;
+			elsif (/^Message-Id: (.*)/i) {
+				$message_id = $1;
 			}
+			elsif (!/^Date:\s/ && /^[-A-Za-z]+:\s+\S/) {
+				push @xh, $_;
+			}
+
 		} else {
-			$message .=  $_;
-			if (/^(Signed-off-by|Cc): (.*)$/i) {
-				next if ($suppress_cc{'sob'});
-				chomp;
-				my $c = $2;
-				chomp $c;
-				next if ($c eq $sender and $suppress_cc{'self'});
-				push @cc, $c;
-				printf("(sob) Adding cc: %s from line '%s'\n",
-					$c, $_) unless $quiet;
+			# In the traditional
+			# "send lots of email" format,
+			# line 1 = cc
+			# line 2 = subject
+			# So let's support that, too.
+			$input_format = 'lots';
+			if (@cc == 0 && !$suppress_cc{'cc'}) {
+				printf("(non-mbox) Adding cc: %s from line '%s'\n",
+					$_, $_) unless $quiet;
+				push @cc, $_;
+			} elsif (!defined $subject) {
+				$subject = $_;
 			}
 		}
 	}
+	# Now parse the message body
+	while(<F>) {
+		$message .=  $_;
+		if (/^(Signed-off-by|Cc): (.*)$/i) {
+			next if ($suppress_cc{'sob'});
+			chomp;
+			my $c = $2;
+			chomp $c;
+			next if ($c eq $sender and $suppress_cc{'self'});
+			push @cc, $c;
+			printf("(sob) Adding cc: %s from line '%s'\n",
+				$c, $_) unless $quiet;
+		}
+	}
 	close F;
 
 	if (defined $cc_cmd && !$suppress_cc{'cccmd'}) {
diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index cb3d183..da54835 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -32,7 +32,7 @@ clean_fake_sendmail() {
 }
 
 test_expect_success 'Extract patches' '
-    patches=`git format-patch -n HEAD^1`
+    patches=`git format-patch --cc="One <one@example.com>" --cc=two@example.com -n HEAD^1`
 '
 
 test_expect_success 'Send patches' '
@@ -42,6 +42,8 @@ test_expect_success 'Send patches' '
 cat >expected <<\EOF
 !nobody@example.com!
 !author@example.com!
+!one@example.com!
+!two@example.com!
 EOF
 test_expect_success \
     'Verify commandline' \
@@ -50,13 +52,15 @@ test_expect_success \
 cat >expected-show-all-headers <<\EOF
 0001-Second.patch
 (mbox) Adding cc: A <author@example.com> from line 'From: A <author@example.com>'
+(mbox) Adding cc: One <one@example.com> from line 'Cc: One <one@example.com>, two@example.com'
+(mbox) Adding cc: two@example.com from line 'Cc: One <one@example.com>, two@example.com'
 Dry-OK. Log says:
 Server: relay.example.com
 MAIL FROM:<from@example.com>
-RCPT TO:<to@example.com>,<cc@example.com>,<author@example.com>,<bcc@example.com>
+RCPT TO:<to@example.com>,<cc@example.com>,<author@example.com>,<one@example.com>,<two@example.com>,<bcc@example.com>
 From: Example <from@example.com>
 To: to@example.com
-Cc: cc@example.com, A <author@example.com>
+Cc: cc@example.com, A <author@example.com>, One <one@example.com>, two@example.com
 Subject: [PATCH 1/1] Second.
 Date: DATE-STRING
 Message-Id: MESSAGE-ID-STRING
@@ -170,13 +174,15 @@ test_expect_success 'second message is patch' '
 cat >expected-show-all-headers <<\EOF
 0001-Second.patch
 (mbox) Adding cc: A <author@example.com> from line 'From: A <author@example.com>'
+(mbox) Adding cc: One <one@example.com> from line 'Cc: One <one@example.com>, two@example.com'
+(mbox) Adding cc: two@example.com from line 'Cc: One <one@example.com>, two@example.com'
 Dry-OK. Log says:
 Server: relay.example.com
 MAIL FROM:<from@example.com>
-RCPT TO:<to@example.com>,<cc@example.com>,<author@example.com>
+RCPT TO:<to@example.com>,<cc@example.com>,<author@example.com>,<one@example.com>,<two@example.com>
 From: Example <from@example.com>
 To: to@example.com
-Cc: cc@example.com, A <author@example.com>
+Cc: cc@example.com, A <author@example.com>, One <one@example.com>, two@example.com
 Subject: [PATCH 1/1] Second.
 Date: DATE-STRING
 Message-Id: MESSAGE-ID-STRING
@@ -203,13 +209,15 @@ test_expect_success 'sendemail.cc set' '
 cat >expected-show-all-headers <<\EOF
 0001-Second.patch
 (mbox) Adding cc: A <author@example.com> from line 'From: A <author@example.com>'
+(mbox) Adding cc: One <one@example.com> from line 'Cc: One <one@example.com>, two@example.com'
+(mbox) Adding cc: two@example.com from line 'Cc: One <one@example.com>, two@example.com'
 Dry-OK. Log says:
 Server: relay.example.com
 MAIL FROM:<from@example.com>
-RCPT TO:<to@example.com>,<author@example.com>
+RCPT TO:<to@example.com>,<author@example.com>,<one@example.com>,<two@example.com>
 From: Example <from@example.com>
 To: to@example.com
-Cc: A <author@example.com>
+Cc: A <author@example.com>, One <one@example.com>, two@example.com
 Subject: [PATCH 1/1] Second.
 Date: DATE-STRING
 Message-Id: MESSAGE-ID-STRING
-- 
1.6.2.rc0.67.g77afc
Next: Thomas Rast
Message 1 of 20 in “send-email: handle multiple Cc addresses when reading mbox message”
  1. send-email: handle multiple Cc addresses when reading mbox messageJay Soffian, Feb 13, 2009
  2. Thomas RastFeb 13, 2009
  3. Jay SoffianFeb 13, 2009
  4. Jay SoffianFeb 13, 2009
  5. Jay SoffianFeb 14, 2009
  6. 1/3 send-email: correct logic error with --suppress-cc=ccJay Soffian, Feb 14, 2009
  7. 2/3 send-email: don't call unquote_rfc2047 unnecessarilyJay Soffian, Feb 14, 2009
  8. 3/3 send-email: --suppress-cc improvementsJay Soffian, Feb 14, 2009
  9. 3/3 send-email: --suppress-cc improvementsJay Soffian, Feb 14, 2009
  10. Junio C HamanoFeb 14, 2009
  11. Jay SoffianFeb 14, 2009
  12. 1/3 send-email: correct logic error with --suppress-cc=ccJay Soffian, Feb 14, 2009
  13. Junio C HamanoFeb 14, 2009
  14. Jay SoffianFeb 14, 2009
  15. Junio C HamanoFeb 14, 2009
  16. Thomas RastFeb 14, 2009
  17. Jeff KingFeb 14, 2009
  18. Jay SoffianFeb 14, 2009
  19. Jeff KingFeb 14, 2009
  20. Junio C HamanoFeb 14, 2009

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