Accept a list of emails separated by commas in flags --cc, --to and
--bcc.  Multiple addresses can already be given by using these options
multiple times, but it is more convenient to allow cutting-and-pasting
a list of addresses from the header of an existing e-mail message,
which already lists them as comma-separated list, as a value to a
single parameter.

The following format can now be used:

    $ git send-email --to='Jane <j...@example.com>, m...@example.com'

However format using commas in names doesn't work:

    $ git send-email --to='"Jane, Doe" <j...@example.com>'

Remove the limitation imposed by 79ee555b (Check and document the
options to prevent mistakes, 2006-06-21) which rejected every argument
with comma in --cc, --to and --bcc

Helped-by: Remi Lespinet <remi.lespi...@ensimag.grenoble-inp.fr>
Signed-off-by: Mathieu Lienard--Mayor <mathieu.lienard--ma...@ensimag.imag.fr>
Signed-off-by: Jorge Juan Garcia Garcia 
<jorge-juan.garcia-gar...@ensimag.imag.fr>
Signed-off-by: Matthieu Moy <matthieu....@grenoble-inp.fr>
Signed-off-by: Remi Lespinet <remi.lespi...@ensimag.grenoble-inp.fr>
---
 Documentation/git-send-email.txt | 21 +++++++++++++++------
 git-send-email.perl              | 33 ++++++++++++++-------------------
 t/t9001-send-email.sh            | 30 ++++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 25 deletions(-)

diff --git a/Documentation/git-send-email.txt b/Documentation/git-send-email.txt
index 043f345..f862fa6 100644
--- a/Documentation/git-send-email.txt
+++ b/Documentation/git-send-email.txt
@@ -49,17 +49,23 @@ Composing
        of 'sendemail.annotate'. See the CONFIGURATION section for
        'sendemail.multiEdit'.
 
---bcc=<address>::
+--bcc=<address>,...::
        Specify a "Bcc:" value for each email. Default is the value of
        'sendemail.bcc'.
 +
-The --bcc option must be repeated for each user you want on the bcc list.
+Addresses containing commas ("Foo, Bar" <foo...@example.com>) are not
+currently supported.
++
+This option may be specified multiple times
 
---cc=<address>::
+--cc=<address>,...::
        Specify a starting "Cc:" value for each email.
        Default is the value of 'sendemail.cc'.
 +
-The --cc option must be repeated for each user you want on the cc list.
+Addresses containing commas ("Foo, Bar" <foo...@example.com>) are not
+currently supported.
++
+This option may be specified multiple times
 
 --compose::
        Invoke a text editor (see GIT_EDITOR in linkgit:git-var[1])
@@ -110,13 +116,16 @@ is not set, this will be prompted for.
        Only necessary if --compose is also set.  If --compose
        is not set, this will be prompted for.
 
---to=<address>::
+--to=<address>,...::
        Specify the primary recipient of the emails generated. Generally, this
        will be the upstream maintainer of the project involved. Default is the
        value of the 'sendemail.to' configuration value; if that is unspecified,
        and --to-cmd is not specified, this will be prompted for.
 +
-The --to option must be repeated for each user you want on the to list.
+Addresses containing commas ("Foo, Bar" <foo...@example.com>) are not
+currently supported.
++
+This option may be specified multiple times
 
 --8bit-encoding=<encoding>::
        When encountering a non-ASCII message or subject that does not
diff --git a/git-send-email.perl b/git-send-email.perl
index ffea500..389f19c 100755
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -460,20 +460,6 @@ my ($repoauthor, $repocommitter);
 ($repoauthor) = Git::ident_person(@repo, 'author');
 ($repocommitter) = Git::ident_person(@repo, 'committer');
 
-# Verify the user input
-
-foreach my $entry (@initial_to) {
-       die "Comma in --to entry: $entry'\n" unless $entry !~ m/,/;
-}
-
-foreach my $entry (@initial_cc) {
-       die "Comma in --cc entry: $entry'\n" unless $entry !~ m/,/;
-}
-
-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]);
@@ -838,11 +824,11 @@ sub expand_one_alias {
 }
 
 @initial_to = expand_aliases(@initial_to);
-@initial_to = validate_address_list(sanitize_address_list(@initial_to));
+@initial_to = extract_address_list(@initial_to);
 @initial_cc = expand_aliases(@initial_cc);
-@initial_cc = validate_address_list(sanitize_address_list(@initial_cc));
+@initial_cc = extract_address_list(@initial_cc);
 @bcclist = expand_aliases(@bcclist);
-@bcclist = validate_address_list(sanitize_address_list(@bcclist));
+@bcclist = extract_address_list(@bcclist);
 
 if ($thread && !defined $initial_reply_to && $prompting) {
        $initial_reply_to = ask(
@@ -1055,6 +1041,15 @@ sub sanitize_address_list {
        return (map { sanitize_address($_) } @_);
 }
 
+sub split_address_list_items {
+       return (map { split /\s*,\s*/, $_ } @_);
+}
+
+sub extract_address_list {
+       return validate_address_list(sanitize_address_list(
+               split_address_list_items(@_)));
+}
+
 # Returns the local Fully Qualified Domain Name (FQDN) if available.
 #
 # Tightly configured MTAa require that a caller sends a real DNS
@@ -1564,8 +1559,8 @@ foreach my $t (@files) {
                ($confirm =~ /^(?:auto|compose)$/ && $compose && $message_num 
== 1));
        $needs_confirm = "inform" if ($needs_confirm && $confirm_unconfigured 
&& @cc);
 
-       @to = validate_address_list(sanitize_address_list(@to));
-       @cc = validate_address_list(sanitize_address_list(@cc));
+       @to = extract_address_list(@to);
+       @cc = extract_address_list(@cc);
 
        @to = (@initial_to, @to);
        @cc = (@initial_cc, @cc);
diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index 71968ee..4245c06 100755
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -1612,4 +1612,34 @@ test_expect_success $PREREQ '--[no-]xmailer with 
sendemail.xmailer=false' '
        do_xmailer_test 1 "--xmailer"
 '
 
+test_expect_success $PREREQ 'setup expected-list' '
+       git send-email \
+       --dry-run \
+       --from="Example <f...@example.com>" \
+       --to="t...@example.com" \
+       --to="t...@example.com" \
+       --to="t...@example.com" \
+       --cc="c...@example.com" \
+       --cc="Cc 1 <c...@example.com>" \
+       --cc="Cc 2 <c...@example.com>" \
+       --bcc="b...@example.com" \
+       --bcc="b...@example.com" \
+       0001-add-master.patch | replace_variable_fields \
+       >expected-list
+'
+
+test_expect_success $PREREQ 'use email list in --cc --to and --bcc' '
+       git send-email \
+       --dry-run \
+       --from="Example <f...@example.com>" \
+       --to="t...@example.com, t...@example.com" \
+       --to="t...@example.com" \
+       --cc="c...@example.com, Cc 1 <c...@example.com>" \
+       --cc="Cc 2 <c...@example.com>" \
+       --bcc="b...@example.com, b...@example.com" \
+       0001-add-master.patch | replace_variable_fields \
+        >actual-list &&
+       test_cmp expected-list actual-list
+'
+
 test_done
-- 
1.9.1

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