Merge branch 'cl/config-regexp-docfix' into maint-2.46

[git/gitster.git] / t / t9001-send-email.sh

#!/bin/sh

test_description='git send-email'
GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME=main
export GIT_TEST_DEFAULT_INITIAL_BRANCH_NAME

TEST_PASSES_SANITIZE_LEAK=true
. ./test-lib.sh

# May be altered later in the test
PREREQ="PERL"

replace_variable_fields () {
        sed     -e "s/^\(Date:\).*/\1 DATE-STRING/" \
                -e "s/^\(Message-ID:\).*/\1 MESSAGE-ID-STRING/" \
                -e "s/^\(X-Mailer:\).*/\1 X-MAILER-STRING/"
}

test_expect_success $PREREQ 'prepare reference tree' '
        echo "1A quick brown fox jumps over the" >file &&
        echo "lazy dog" >>file &&
        git add file &&
        GIT_AUTHOR_NAME="A" git commit -a -m "Initial."
'

test_expect_success $PREREQ 'Setup helper tool' '
        write_script fake.sendmail <<-\EOF &&
        shift
        output=1
        while test -f commandline$output
        do
                output=$(($output+1))
        done
        for a
        do
                echo "!$a!"
        done >commandline$output
        cat >"msgtxt$output"
        EOF
        git add fake.sendmail &&
        GIT_AUTHOR_NAME="A" git commit -a -m "Second."
'

clean_fake_sendmail () {
        rm -f commandline* msgtxt*
}

test_expect_success $PREREQ 'Extract patches' '
        patches=$(git format-patch -s --cc="One <one@example.com>" --cc=two@example.com -n HEAD^1) &&
        threaded_patches=$(git format-patch -o threaded --thread=shallow -s --in-reply-to="format" HEAD^1)
'

# Test no confirm early to ensure remaining tests will not hang
test_no_confirm () {
        rm -f no_confirm_okay
        echo n | \
                GIT_SEND_EMAIL_NOTTY=1 \
                git send-email \
                --from="Example <from@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $@ \
                $patches >stdout &&
        ! grep "Send this email" stdout &&
        >no_confirm_okay
}

# Exit immediately to prevent hang if a no-confirm test fails
check_no_confirm () {
        if ! test -f no_confirm_okay
        then
                say 'confirm test failed; skipping remaining tests to prevent hanging'
                PREREQ="$PREREQ,CHECK_NO_CONFIRM"
        fi
        return 0
}

test_expect_success $PREREQ 'No confirm with --suppress-cc' '
        test_no_confirm --suppress-cc=sob &&
        check_no_confirm
'


test_expect_success $PREREQ 'No confirm with --confirm=never' '
        test_no_confirm --confirm=never &&
        check_no_confirm
'

# leave sendemail.confirm set to never after this so that none of the
# remaining tests prompt unintentionally.
test_expect_success $PREREQ 'No confirm with sendemail.confirm=never' '
        git config sendemail.confirm never &&
        test_no_confirm --compose --subject=foo &&
        check_no_confirm
'

test_expect_success $PREREQ 'Send patches' '
        git send-email --suppress-cc=sob --from="Example <nobody@example.com>" --to=nobody@example.com --smtp-server="$(pwd)/fake.sendmail" $patches 2>errors
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        !nobody@example.com!
        !author@example.com!
        !one@example.com!
        !two@example.com!
        EOF
'

test_expect_success $PREREQ 'Verify commandline' '
        test_cmp expected commandline1
'

test_expect_success $PREREQ 'Send patches with --envelope-sender' '
        clean_fake_sendmail &&
        git send-email --envelope-sender="Patch Contributor <patch@example.com>" --suppress-cc=sob --from="Example <nobody@example.com>" --to=nobody@example.com --smtp-server="$(pwd)/fake.sendmail" $patches 2>errors
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        !patch@example.com!
        !-i!
        !nobody@example.com!
        !author@example.com!
        !one@example.com!
        !two@example.com!
        EOF
'

test_expect_success $PREREQ 'Verify commandline' '
        test_cmp expected commandline1
'

test_expect_success $PREREQ 'Send patches with --envelope-sender=auto' '
        clean_fake_sendmail &&
        git send-email --envelope-sender=auto --suppress-cc=sob --from="Example <nobody@example.com>" --to=nobody@example.com --smtp-server="$(pwd)/fake.sendmail" $patches 2>errors
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        !nobody@example.com!
        !-i!
        !nobody@example.com!
        !author@example.com!
        !one@example.com!
        !two@example.com!
        EOF
'

test_expect_success $PREREQ 'Verify commandline' '
        test_cmp expected commandline1
'

test_expect_success $PREREQ 'setup expect for cc trailer' "
cat >expected-cc <<\EOF
!recipient@example.com!
!author@example.com!
!one@example.com!
!two@example.com!
!three@example.com!
!four@example.com!
!five@example.com!
!six@example.com!
EOF
"

test_expect_success $PREREQ 'cc trailer with various syntax' '
        test_commit cc-trailer &&
        test_when_finished "git reset --hard HEAD^" &&
        git commit --amend -F - <<-EOF &&
        Test Cc: trailers.

        Cc: one@example.com
        Cc: <two@example.com> # trailing comments are ignored
        Cc: <three@example.com>, <not.four@example.com> one address per line
        Cc: "Some # Body" <four@example.com> [ <also.a.comment> ]
        Cc: five@example.com # not.six@example.com
        Cc: six@example.com, not.seven@example.com
        EOF
        clean_fake_sendmail &&
        git send-email -1 --to=recipient@example.com \
                --smtp-server="$(pwd)/fake.sendmail" &&
        test_cmp expected-cc commandline1
'

test_expect_success $PREREQ 'setup fake get_maintainer.pl script for cc trailer' "
        write_script expected-cc-script.sh <<-EOF
        echo 'One Person <one@example.com> (supporter:THIS (FOO/bar))'
        echo 'Two Person <two@example.com> (maintainer:THIS THING)'
        echo 'Third List <three@example.com> (moderated list:THIS THING (FOO/bar))'
        echo '<four@example.com> (moderated list:FOR THING)'
        echo 'five@example.com (open list:FOR THING (FOO/bar))'
        echo 'six@example.com (open list)'
        EOF
"

test_expect_success $PREREQ 'cc trailer with get_maintainer.pl output' '
        clean_fake_sendmail &&
        git send-email -1 --to=recipient@example.com \
                --cc-cmd=./expected-cc-script.sh \
                --smtp-server="$(pwd)/fake.sendmail" &&
        test_cmp expected-cc commandline1
'

test_expect_success $PREREQ 'setup expect' "
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>
RCPT TO:<cc@example.com>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
RCPT TO:<bcc@example.com>
From: Example <from@example.com>
To: to@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
X-Mailer: X-MAILER-STRING
In-Reply-To: <unique-message-id@example.com>
References: <unique-message-id@example.com>
Reply-To: Reply <reply@example.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_suppress_self () {
        test_commit $3 &&
        test_when_finished "git reset --hard HEAD^" &&

        write_script cccmd-sed <<-EOF &&
                sed -n -e s/^cccmd--//p "\$1"
        EOF

        git commit --amend --author="$1 <$2>" -F - &&
        clean_fake_sendmail &&
        git format-patch --stdout -1 >"suppress-self-$3.patch" &&

        git send-email --from="$1 <$2>" \
                --to=nobody@example.com \
                --cc-cmd=./cccmd-sed \
                --suppress-cc=self \
                --smtp-server="$(pwd)/fake.sendmail" \
                suppress-self-$3.patch &&

        mv msgtxt1 msgtxt1-$3 &&
        sed -e '/^$/q' msgtxt1-$3 >"msghdr1-$3" &&

        (grep '^Cc:' msghdr1-$3 >"actual-no-cc-$3";
         test_must_be_empty actual-no-cc-$3)
}

test_suppress_self_unquoted () {
        test_suppress_self "$1" "$2" "unquoted-$3" <<-EOF
                test suppress-cc.self unquoted-$3 with name $1 email $2

                unquoted-$3

                cccmd--$1 <$2>

                Cc: $1 <$2>
                Signed-off-by: $1 <$2>
        EOF
}

test_suppress_self_quoted () {
        test_suppress_self "$1" "$2" "quoted-$3" <<-EOF
                test suppress-cc.self quoted-$3 with name $1 email $2

                quoted-$3

                cccmd--"$1" <$2>

                Cc: $1 <$2>
                Cc: "$1" <$2>
                Signed-off-by: $1 <$2>
                Signed-off-by: "$1" <$2>
        EOF
}

test_expect_success $PREREQ 'self name is suppressed' "
        test_suppress_self_unquoted 'A U Thor' 'author@example.com' \
                'self_name_suppressed'
"

test_expect_success $PREREQ 'self name with dot is suppressed' "
        test_suppress_self_quoted 'A U. Thor' 'author@example.com' \
                'self_name_dot_suppressed'
"

test_expect_success $PREREQ 'non-ascii self name is suppressed' "
        test_suppress_self_quoted 'Füñný Nâmé' 'odd_?=mail@example.com' \
                'non_ascii_self_suppressed'
"

# This name is long enough to force format-patch to split it into multiple
# encoded-words, assuming it uses UTF-8 with the "Q" encoding.
test_expect_success $PREREQ 'long non-ascii self name is suppressed' "
        test_suppress_self_quoted 'Ƒüñníęř €. Nâṁé' 'odd_?=mail@example.com' \
                'long_non_ascii_self_suppressed'
"

test_expect_success $PREREQ 'sanitized self name is suppressed' "
        test_suppress_self_unquoted '\"A U. Thor\"' 'author@example.com' \
                'self_name_sanitized_suppressed'
"

test_expect_success $PREREQ 'Show all headers' '
        git send-email \
                --dry-run \
                --suppress-cc=sob \
                --from="Example <from@example.com>" \
                --reply-to="Reply <reply@example.com>" \
                --to=to@example.com \
                --cc=cc@example.com \
                --bcc=bcc@example.com \
                --in-reply-to="<unique-message-id@example.com>" \
                --smtp-server relay.example.com \
                $patches | replace_variable_fields \
                >actual-show-all-headers &&
        test_cmp expected-show-all-headers actual-show-all-headers
'

test_expect_success $PREREQ 'Prompting works' '
        clean_fake_sendmail &&
        (echo "to@example.com" &&
         echo "my-message-id@example.com"
        ) | GIT_SEND_EMAIL_NOTTY=1 git send-email \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches \
                2>errors &&
                grep "^From: A U Thor <author@example.com>\$" msgtxt1 &&
                grep "^To: to@example.com\$" msgtxt1 &&
                grep "^In-Reply-To: <my-message-id@example.com>" msgtxt1
'

test_expect_success $PREREQ,AUTOIDENT 'implicit ident is allowed' '
        clean_fake_sendmail &&
        (sane_unset GIT_AUTHOR_NAME &&
        sane_unset GIT_AUTHOR_EMAIL &&
        sane_unset GIT_COMMITTER_NAME &&
        sane_unset GIT_COMMITTER_EMAIL &&
        GIT_SEND_EMAIL_NOTTY=1 git send-email \
                --smtp-server="$(pwd)/fake.sendmail" \
                --to=to@example.com \
                $patches </dev/null 2>errors
        )
'

test_expect_success $PREREQ,!AUTOIDENT 'broken implicit ident aborts send-email' '
        clean_fake_sendmail &&
        (sane_unset GIT_AUTHOR_NAME &&
        sane_unset GIT_AUTHOR_EMAIL &&
        sane_unset GIT_COMMITTER_NAME &&
        sane_unset GIT_COMMITTER_EMAIL &&
        GIT_SEND_EMAIL_NOTTY=1 && export GIT_SEND_EMAIL_NOTTY &&
        test_must_fail git send-email \
                --smtp-server="$(pwd)/fake.sendmail" \
                --to=to@example.com \
                $patches </dev/null 2>errors &&
        test_grep "tell me who you are" errors
        )
'

test_expect_success $PREREQ 'setup cmd scripts' '
        write_script tocmd-sed <<-\EOF &&
        sed -n -e "s/^tocmd--//p" "$1"
        EOF
        write_script cccmd-sed <<-\EOF &&
        sed -n -e "s/^cccmd--//p" "$1"
        EOF
        write_script headercmd-sed <<-\EOF
        sed -n -e "s/^headercmd--//p" "$1"
        EOF
'

test_expect_success $PREREQ 'tocmd works' '
        clean_fake_sendmail &&
        cp $patches tocmd.patch &&
        echo tocmd--tocmd@example.com >>tocmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to-cmd=./tocmd-sed \
                --smtp-server="$(pwd)/fake.sendmail" \
                tocmd.patch \
                &&
        grep "^To: tocmd@example.com" msgtxt1
'

test_expect_success $PREREQ 'cccmd works' '
        clean_fake_sendmail &&
        cp $patches cccmd.patch &&
        echo "cccmd--  cccmd@example.com" >>cccmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --cc-cmd=./cccmd-sed \
                --smtp-server="$(pwd)/fake.sendmail" \
                cccmd.patch \
                &&
        grep "^ cccmd@example.com" msgtxt1
'

test_expect_success $PREREQ 'headercmd works' '
        clean_fake_sendmail &&
        cp $patches headercmd.patch &&
        echo "headercmd--X-Debbugs-CC: dummy@example.com" >>headercmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --header-cmd=./headercmd-sed \
                --smtp-server="$(pwd)/fake.sendmail" \
                headercmd.patch \
                &&
        grep "^X-Debbugs-CC: dummy@example.com" msgtxt1
'

test_expect_success $PREREQ '--no-header-cmd works' '
        clean_fake_sendmail &&
        cp $patches headercmd.patch &&
        echo "headercmd--X-Debbugs-CC: dummy@example.com" >>headercmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --header-cmd=./headercmd-sed \
                --no-header-cmd \
                --smtp-server="$(pwd)/fake.sendmail" \
                headercmd.patch \
                &&
        ! grep "^X-Debbugs-CC: dummy@example.com" msgtxt1
'

test_expect_success $PREREQ 'multiline fields are correctly unfolded' '
        clean_fake_sendmail &&
        cp $patches headercmd.patch &&
        write_script headercmd-multiline <<-\EOF &&
        echo "X-Debbugs-CC: someone@example.com
FoldedField: This is a tale
 best told using
 multiple lines."
        EOF
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --header-cmd=./headercmd-multiline \
                --smtp-server="$(pwd)/fake.sendmail" \
                headercmd.patch &&
        grep "^FoldedField: This is a tale best told using multiple lines.$" msgtxt1
'

# Blank lines in the middle of the output of a command are invalid.
test_expect_success $PREREQ 'malform output reported on blank lines in command output' '
        clean_fake_sendmail &&
        cp $patches headercmd.patch &&
        write_script headercmd-malformed-output <<-\EOF &&
        echo "X-Debbugs-CC: someone@example.com

SomeOtherField: someone-else@example.com"
        EOF
        ! git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --header-cmd=./headercmd-malformed-output \
                --smtp-server="$(pwd)/fake.sendmail" \
                headercmd.patch
'

test_expect_success $PREREQ 'reject long lines' '
        z8=zzzzzzzz &&
        z64=$z8$z8$z8$z8$z8$z8$z8$z8 &&
        z512=$z64$z64$z64$z64$z64$z64$z64$z64 &&
        clean_fake_sendmail &&
        cp $patches longline.patch &&
        cat >>longline.patch <<-EOF &&
        $z512$z512
        not a long line
        $z512$z512
        EOF
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --transfer-encoding=8bit \
                $patches longline.patch \
                2>actual &&
        cat >expect <<-\EOF &&
        fatal: longline.patch:35 is longer than 998 characters
        warning: no patches were sent
        EOF
        test_cmp expect actual
'

test_expect_success $PREREQ 'no patch was sent' '
        ! test -e commandline1
'

test_expect_success $PREREQ 'Author From: in message body' '
        clean_fake_sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        sed "1,/^\$/d" <msgtxt1 >msgbody1 &&
        grep "From: A <author@example.com>" msgbody1
'

test_expect_success $PREREQ 'Author From: not in message body' '
        clean_fake_sendmail &&
        git send-email \
                --from="A <author@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        sed "1,/^\$/d" <msgtxt1 >msgbody1 &&
        ! grep "From: A <author@example.com>" msgbody1
'

test_expect_success $PREREQ 'allow long lines with --no-validate' '
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --no-validate \
                $patches longline.patch \
                2>errors
'

test_expect_success $PREREQ 'short lines with auto encoding are 8bit' '
        clean_fake_sendmail &&
        git send-email \
                --from="A <author@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --transfer-encoding=auto \
                $patches &&
        grep "Content-Transfer-Encoding: 8bit" msgtxt1
'

test_expect_success $PREREQ 'long lines with auto encoding are quoted-printable' '
        clean_fake_sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --transfer-encoding=auto \
                --no-validate \
                longline.patch &&
        grep "Content-Transfer-Encoding: quoted-printable" msgtxt1
'

test_expect_success $PREREQ 'carriage returns with auto encoding are quoted-printable' '
        clean_fake_sendmail &&
        cp $patches cr.patch &&
        printf "this is a line\r\n" >>cr.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --transfer-encoding=auto \
                --no-validate \
                cr.patch &&
        grep "Content-Transfer-Encoding: quoted-printable" msgtxt1
'

for enc in auto quoted-printable base64
do
        test_expect_success $PREREQ "--validate passes with encoding $enc" '
                git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        --transfer-encoding=$enc \
                        --validate \
                        $patches longline.patch
        '

done

test_expect_success $PREREQ "--validate respects relative core.hooksPath path" '
        clean_fake_sendmail &&
        mkdir my-hooks &&
        test_when_finished "rm my-hooks.ran" &&
        write_script my-hooks/sendemail-validate <<-\EOF &&
        >my-hooks.ran
        exit 1
        EOF
        test_config core.hooksPath "my-hooks" &&
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --validate \
                longline.patch 2>actual &&
        test_path_is_file my-hooks.ran &&
        cat >expect <<-EOF &&
        fatal: longline.patch: rejected by sendemail-validate hook
        fatal: command '"'"'git hook run --ignore-missing sendemail-validate -- <patch> <header>'"'"' died with exit code 1
        warning: no patches were sent
        EOF
        test_cmp expect actual
'

test_expect_success $PREREQ "--validate respects absolute core.hooksPath path" '
        hooks_path="$(pwd)/my-hooks" &&
        test_config core.hooksPath "$hooks_path" &&
        test_when_finished "rm my-hooks.ran" &&
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --validate \
                longline.patch 2>actual &&
        test_path_is_file my-hooks.ran &&
        cat >expect <<-EOF &&
        fatal: longline.patch: rejected by sendemail-validate hook
        fatal: command '"'"'git hook run --ignore-missing sendemail-validate -- <patch> <header>'"'"' died with exit code 1
        warning: no patches were sent
        EOF
        test_cmp expect actual
'

test_expect_success $PREREQ "--validate hook supports multiple addresses in arguments" '
        hooks_path="$(pwd)/my-hooks" &&
        test_config core.hooksPath "$hooks_path" &&
        test_when_finished "rm my-hooks.ran" &&
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com,abc@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --validate \
                longline.patch 2>actual &&
        test_path_is_file my-hooks.ran &&
        cat >expect <<-EOF &&
        fatal: longline.patch: rejected by sendemail-validate hook
        fatal: command '"'"'git hook run --ignore-missing sendemail-validate -- <patch> <header>'"'"' died with exit code 1
        warning: no patches were sent
        EOF
        test_cmp expect actual
'

test_expect_success $PREREQ "--validate hook supports header argument" '
        write_script my-hooks/sendemail-validate <<-\EOF &&
        if test "$#" -ge 2
        then
                grep "X-test-header: v1.0" "$2"
        else
                echo "No header arg passed"
                exit 1
        fi
        EOF
        test_config core.hooksPath "my-hooks" &&
        rm -fr outdir &&
        git format-patch \
                --add-header="X-test-header: v1.0" \
                -n HEAD^1 -o outdir &&
        git send-email \
                --dry-run \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --validate \
                outdir/000?-*.patch
'

test_expect_success $PREREQ 'clear message-id before parsing a new message' '
        clean_fake_sendmail &&
        echo true | write_script my-hooks/sendemail-validate &&
        test_config core.hooksPath my-hooks &&
        git send-email --validate --to=recipient@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches $threaded_patches &&
        id0=$(grep "^Message-ID: " $threaded_patches) &&
        id1=$(grep "^Message-ID: " msgtxt1) &&
        id2=$(grep "^Message-ID: " msgtxt2) &&
        test "z$id0" = "z$id2" &&
        test "z$id1" != "z$id2"
'

for enc in 7bit 8bit quoted-printable base64
do
        test_expect_success $PREREQ "--transfer-encoding=$enc produces correct header" '
                clean_fake_sendmail &&
                git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        --transfer-encoding=$enc \
                        $patches &&
                grep "Content-Transfer-Encoding: $enc" msgtxt1
        '
done

test_expect_success $PREREQ 'Invalid In-Reply-To' '
        clean_fake_sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --in-reply-to=" " \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches \
                2>errors &&
        ! grep "^In-Reply-To: < *>" msgtxt1
'

test_expect_success $PREREQ 'Valid In-Reply-To when prompting' '
        clean_fake_sendmail &&
        (echo "From Example <from@example.com>" &&
         echo "To Example <to@example.com>" &&
         echo ""
        ) | GIT_SEND_EMAIL_NOTTY=1 git send-email \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches 2>errors &&
        ! grep "^In-Reply-To: < *>" msgtxt1
'

test_expect_success $PREREQ 'In-Reply-To without --chain-reply-to' '
        clean_fake_sendmail &&
        echo "<unique-message-id@example.com>" >expect &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --no-chain-reply-to \
                --in-reply-to="$(cat expect)" \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches $patches $patches \
                2>errors &&
        # The first message is a reply to --in-reply-to
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt1 >actual &&
        test_cmp expect actual &&
        # Second and subsequent messages are replies to the first one
        sed -n -e "s/^Message-ID: *\(.*\)/\1/p" msgtxt1 >expect &&
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt2 >actual &&
        test_cmp expect actual &&
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt3 >actual &&
        test_cmp expect actual
'

test_expect_success $PREREQ 'In-Reply-To with --chain-reply-to' '
        clean_fake_sendmail &&
        echo "<unique-message-id@example.com>" >expect &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --chain-reply-to \
                --in-reply-to="$(cat expect)" \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches $patches $patches \
                2>errors &&
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt1 >actual &&
        test_cmp expect actual &&
        sed -n -e "s/^Message-ID: *\(.*\)/\1/p" msgtxt1 >expect &&
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt2 >actual &&
        test_cmp expect actual &&
        sed -n -e "s/^Message-ID: *\(.*\)/\1/p" msgtxt2 >expect &&
        sed -n -e "s/^In-Reply-To: *\(.*\)/\1/p" msgtxt3 >actual &&
        test_cmp expect actual
'

test_set_editor "$(pwd)/fake-editor"

test_expect_success $PREREQ 'setup erroring fake editor' '
        write_script fake-editor <<-\EOF
        echo >&2 "I am about to error"
        exit 1
        EOF
'

test_expect_success $PREREQ 'fake editor dies with error' '
        clean_fake_sendmail &&
        test_must_fail git send-email \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches 2>err &&
        grep "I am about to error" err &&
        grep "the editor exited uncleanly, aborting everything" err
'

test_expect_success $PREREQ 'setup fake editor' '
        write_script fake-editor <<-\EOF
        echo fake edit >>"$1"
        EOF
'

test_expect_success $PREREQ '--compose works' '
        clean_fake_sendmail &&
        git send-email \
        --compose --subject foo \
        --from="Example <nobody@example.com>" \
        --to=nobody@example.com \
        --smtp-server="$(pwd)/fake.sendmail" \
        $patches \
        2>errors
'

test_expect_success $PREREQ 'first message is compose text' '
        grep "^fake edit" msgtxt1
'

test_expect_success $PREREQ 'second message is patch' '
        grep "Subject:.*Second" msgtxt2
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-sob <<\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>
RCPT TO:<cc@example.com>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
From: Example <from@example.com>
To: to@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
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_suppression () {
        git send-email \
                --dry-run \
                --suppress-cc=$1 ${2+"--suppress-cc=$2"} \
                --from="Example <from@example.com>" \
                --to=to@example.com \
                --smtp-server relay.example.com \
                $patches | replace_variable_fields \
                >actual-suppress-$1${2+"-$2"} &&
        test_cmp expected-suppress-$1${2+"-$2"} actual-suppress-$1${2+"-$2"}
}

test_expect_success $PREREQ 'sendemail.cc set' '
        git config sendemail.cc cc@example.com &&
        test_suppression sob
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-sob <<\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>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
From: Example <from@example.com>
To: to@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
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ 'sendemail.cc unset' '
        git config --unset sendemail.cc &&
        test_suppression sob
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-cccmd <<\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'
(body) Adding cc: C O Mitter <committer@example.com> from line 'Signed-off-by: C O Mitter <committer@example.com>'
Dry-OK. Log says:
Server: relay.example.com
MAIL FROM:<from@example.com>
RCPT TO:<to@example.com>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
RCPT TO:<committer@example.com>
From: Example <from@example.com>
To: to@example.com
Cc: A <author@example.com>,
        One <one@example.com>,
        two@example.com,
        C O Mitter <committer@example.com>
Subject: [PATCH 1/1] Second.
Date: DATE-STRING
Message-ID: MESSAGE-ID-STRING
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ 'sendemail.cccmd' '
        write_script cccmd <<-\EOF &&
        echo cc-cmd@example.com
        EOF
        git config sendemail.cccmd ./cccmd &&
        test_suppression cccmd
'

test_expect_success $PREREQ 'setup expect' '
cat >expected-suppress-all <<\EOF
0001-Second.patch
Dry-OK. Log says:
Server: relay.example.com
MAIL FROM:<from@example.com>
RCPT TO:<to@example.com>
From: Example <from@example.com>
To: to@example.com
Subject: [PATCH 1/1] Second.
Date: DATE-STRING
Message-ID: MESSAGE-ID-STRING
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
'

test_expect_success $PREREQ '--suppress-cc=all' '
        test_suppression all
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-body <<\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'
(cc-cmd) Adding cc: cc-cmd@example.com from: './cccmd'
Dry-OK. Log says:
Server: relay.example.com
MAIL FROM:<from@example.com>
RCPT TO:<to@example.com>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
RCPT TO:<cc-cmd@example.com>
From: Example <from@example.com>
To: to@example.com
Cc: A <author@example.com>,
        One <one@example.com>,
        two@example.com,
        cc-cmd@example.com
Subject: [PATCH 1/1] Second.
Date: DATE-STRING
Message-ID: MESSAGE-ID-STRING
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ '--suppress-cc=body' '
        test_suppression body
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-body-cccmd <<\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>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
From: Example <from@example.com>
To: to@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
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ '--suppress-cc=body --suppress-cc=cccmd' '
        test_suppression body cccmd
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-sob <<\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>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
From: Example <from@example.com>
To: to@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
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ '--suppress-cc=sob' '
        test_might_fail git config --unset sendemail.cccmd &&
        test_suppression sob
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-bodycc <<\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'
(body) Adding cc: C O Mitter <committer@example.com> from line 'Signed-off-by: C O Mitter <committer@example.com>'
Dry-OK. Log says:
Server: relay.example.com
MAIL FROM:<from@example.com>
RCPT TO:<to@example.com>
RCPT TO:<author@example.com>
RCPT TO:<one@example.com>
RCPT TO:<two@example.com>
RCPT TO:<committer@example.com>
From: Example <from@example.com>
To: to@example.com
Cc: A <author@example.com>,
        One <one@example.com>,
        two@example.com,
        C O Mitter <committer@example.com>
Subject: [PATCH 1/1] Second.
Date: DATE-STRING
Message-ID: MESSAGE-ID-STRING
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ '--suppress-cc=bodycc' '
        test_suppression bodycc
'

test_expect_success $PREREQ 'setup expect' "
cat >expected-suppress-cc <<\EOF
0001-Second.patch
(mbox) Adding cc: A <author@example.com> from line 'From: A <author@example.com>'
(body) Adding cc: C O Mitter <committer@example.com> from line 'Signed-off-by: C O Mitter <committer@example.com>'
Dry-OK. Log says:
Server: relay.example.com
MAIL FROM:<from@example.com>
RCPT TO:<to@example.com>
RCPT TO:<author@example.com>
RCPT TO:<committer@example.com>
From: Example <from@example.com>
To: to@example.com
Cc: A <author@example.com>,
        C O Mitter <committer@example.com>
Subject: [PATCH 1/1] Second.
Date: DATE-STRING
Message-ID: MESSAGE-ID-STRING
X-Mailer: X-MAILER-STRING
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit

Result: OK
EOF
"

test_expect_success $PREREQ '--suppress-cc=cc' '
        test_suppression cc
'

test_confirm () {
        echo y | \
                GIT_SEND_EMAIL_NOTTY=1 \
                git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $@ $patches >stdout &&
        grep "Send this email" stdout
}

test_expect_success $PREREQ '--confirm=always' '
        test_confirm --confirm=always --suppress-cc=all
'

test_expect_success $PREREQ '--confirm=auto' '
        test_confirm --confirm=auto
'

test_expect_success $PREREQ '--confirm=cc' '
        test_confirm --confirm=cc
'

test_expect_success $PREREQ '--confirm=compose' '
        test_confirm --confirm=compose --compose
'

test_expect_success $PREREQ 'confirm by default (due to cc)' '
        test_when_finished git config sendemail.confirm never &&
        git config --unset sendemail.confirm &&
        test_confirm
'

test_expect_success $PREREQ 'confirm by default (due to --compose)' '
        test_when_finished git config sendemail.confirm never &&
        git config --unset sendemail.confirm &&
        test_confirm --suppress-cc=all --compose
'

test_expect_success $PREREQ 'confirm detects EOF (inform assumes y)' '
        test_when_finished git config sendemail.confirm never &&
        git config --unset sendemail.confirm &&
        rm -fr outdir &&
        git format-patch -2 -o outdir &&
        GIT_SEND_EMAIL_NOTTY=1 \
                git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        outdir/*.patch </dev/null
'

test_expect_success $PREREQ 'confirm detects EOF (auto causes failure)' '
        test_when_finished git config sendemail.confirm never &&
        git config sendemail.confirm auto &&
        GIT_SEND_EMAIL_NOTTY=1 &&
        export GIT_SEND_EMAIL_NOTTY &&
                test_must_fail git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        $patches </dev/null
'

test_expect_success $PREREQ 'confirm does not loop forever' '
        test_when_finished git config sendemail.confirm never &&
        git config sendemail.confirm auto &&
        GIT_SEND_EMAIL_NOTTY=1 &&
        export GIT_SEND_EMAIL_NOTTY &&
                yes "bogus" | test_must_fail git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        $patches
'

test_expect_success $PREREQ 'utf8 Cc is rfc2047 encoded' '
        clean_fake_sendmail &&
        rm -fr outdir &&
        git format-patch -1 -o outdir --cc="àéìöú <utf8@example.com>" &&
        git send-email \
        --from="Example <nobody@example.com>" \
        --to=nobody@example.com \
        --smtp-server="$(pwd)/fake.sendmail" \
        outdir/*.patch &&
        grep "^ " msgtxt1 |
        grep "=?UTF-8?q?=C3=A0=C3=A9=C3=AC=C3=B6=C3=BA?= <utf8@example.com>"
'

test_expect_success $PREREQ '--compose adds MIME for utf8 body' '
        clean_fake_sendmail &&
        write_script fake-editor-utf8 <<-\EOF &&
        echo "utf8 body: àéìöú" >>"$1"
        EOF
        GIT_EDITOR="\"$(pwd)/fake-editor-utf8\"" \
        git send-email \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^utf8 body" msgtxt1 &&
        grep "^Content-Type: text/plain; charset=UTF-8" msgtxt1
'

test_expect_success $PREREQ '--compose respects user mime type' '
        clean_fake_sendmail &&
        write_script fake-editor-utf8-mime <<-\EOF &&
        cat >"$1" <<-\EOM
        MIME-Version: 1.0
        Content-Type: text/plain; charset=iso-8859-1
        Content-Transfer-Encoding: 8bit
        Subject: foo

        utf8 body: àéìöú
        EOM
        EOF
        GIT_EDITOR="\"$(pwd)/fake-editor-utf8-mime\"" \
        git send-email \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^utf8 body" msgtxt1 &&
        grep "^Content-Type: text/plain; charset=iso-8859-1" msgtxt1 &&
        ! grep "^Content-Type: text/plain; charset=UTF-8" msgtxt1
'

test_expect_success $PREREQ '--compose adds MIME for utf8 subject' '
        clean_fake_sendmail &&
        GIT_EDITOR="\"$(pwd)/fake-editor\"" \
        git send-email \
                --compose --subject utf8-sübjëct \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^fake edit" msgtxt1 &&
        grep "^Subject: =?UTF-8?q?utf8-s=C3=BCbj=C3=ABct?=" msgtxt1
'

test_expect_success $PREREQ 'utf8 author is correctly passed on' '
        clean_fake_sendmail &&
        test_commit weird_author &&
        test_when_finished "git reset --hard HEAD^" &&
        git commit --amend --author "Füñný Nâmé <odd_?=mail@example.com>" &&
        git format-patch --stdout -1 >funny_name.patch &&
        git send-email --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                funny_name.patch &&
        grep "^From: Füñný Nâmé <odd_?=mail@example.com>" msgtxt1
'

test_expect_success $PREREQ 'utf8 sender is not duplicated' '
        clean_fake_sendmail &&
        test_commit weird_sender &&
        test_when_finished "git reset --hard HEAD^" &&
        git commit --amend --author "Füñný Nâmé <odd_?=mail@example.com>" &&
        git format-patch --stdout -1 >funny_name.patch &&
        git send-email --from="Füñný Nâmé <odd_?=mail@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                funny_name.patch &&
        grep "^From: " msgtxt1 >msgfrom &&
        test_line_count = 1 msgfrom
'

test_expect_success $PREREQ 'setup expect for cc list' "
cat >expected-cc <<\EOF
!recipient@example.com!
!author@example.com!
!one@example.com!
!os@example.com!
!odd_?=mail@example.com!
!doug@example.com!
!codev@example.com!
!thor.au@example.com!
EOF
"

test_expect_success $PREREQ 'cc list is sanitized' '
        clean_fake_sendmail &&
        test_commit weird_cc_body &&
        test_when_finished "git reset --hard HEAD^" &&
        git commit --amend -F - <<-EOF &&
        Test Cc: sanitization.

        Cc: Person, One <one@example.com>
        Cc: Ronnie O${SQ}Sullivan <os@example.com>
        Reviewed-by: Füñný Nâmé <odd_?=mail@example.com>
        Reported-by: bugger on Jira
        Reported-by: Douglas Reporter <doug@example.com> [from Jira profile]
        BugID: 12345
        Co-developed-by: "C. O. Developer" <codev@example.com>
        Signed-off-by: A. U. Thor <thor.au@example.com>
        EOF
        git send-email -1 --to=recipient@example.com \
                --smtp-server="$(pwd)/fake.sendmail" >actual-show-all-headers &&
        test_cmp expected-cc commandline1 &&
        test_grep "^(body) Adding cc: \"Person, One\" <one@example.com>" actual-show-all-headers &&
        test_grep "^(body) Adding cc: Ronnie O${SQ}Sullivan <os@example.com>" actual-show-all-headers &&
        test_grep "^(body) Adding cc: =?UTF-8?q?F=C3=BC=C3=B1n=C3=BD=20N=C3=A2m=C3=A9?="\
" <odd_?=mail@example.com>" actual-show-all-headers &&
        test_grep "^(body) Ignoring Reported-by .* bugger on Jira" actual-show-all-headers &&
        test_grep "^(body) Adding cc: Douglas Reporter <doug@example.com>" actual-show-all-headers &&
        test_grep ! "12345" actual-show-all-headers &&
        test_grep "^(body) Adding cc: \"C. O. Developer\" <codev@example.com>" actual-show-all-headers &&
        test_grep "^(body) Adding cc: \"A. U. Thor\" <thor.au@example.com>" actual-show-all-headers
'

test_expect_success $PREREQ 'sendemail.composeencoding works' '
        clean_fake_sendmail &&
        git config sendemail.composeencoding iso-8859-1 &&
        write_script fake-editor-utf8 <<-\EOF &&
        echo "utf8 body: àéìöú" >>"$1"
        EOF
        GIT_EDITOR="\"$(pwd)/fake-editor-utf8\"" \
        git send-email \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^utf8 body" msgtxt1 &&
        grep "^Content-Type: text/plain; charset=iso-8859-1" msgtxt1
'

test_expect_success $PREREQ '--compose-encoding works' '
        clean_fake_sendmail &&
        write_script fake-editor-utf8 <<-\EOF &&
        echo "utf8 body: àéìöú" >>"$1"
        EOF
        GIT_EDITOR="\"$(pwd)/fake-editor-utf8\"" \
        git send-email \
                --compose-encoding iso-8859-1 \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^utf8 body" msgtxt1 &&
        grep "^Content-Type: text/plain; charset=iso-8859-1" msgtxt1
'

test_expect_success $PREREQ '--compose-encoding overrides sendemail.composeencoding' '
        clean_fake_sendmail &&
        git config sendemail.composeencoding iso-8859-1 &&
        write_script fake-editor-utf8 <<-\EOF &&
        echo "utf8 body: àéìöú" >>"$1"
        EOF
        GIT_EDITOR="\"$(pwd)/fake-editor-utf8\"" \
        git send-email \
                --compose-encoding iso-8859-2 \
                --compose --subject foo \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^utf8 body" msgtxt1 &&
        grep "^Content-Type: text/plain; charset=iso-8859-2" msgtxt1
'

test_expect_success $PREREQ '--compose-encoding adds correct MIME for subject' '
        clean_fake_sendmail &&
        GIT_EDITOR="\"$(pwd)/fake-editor\"" \
        git send-email \
                --compose-encoding iso-8859-2 \
                --compose --subject utf8-sübjëct \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $patches &&
        grep "^fake edit" msgtxt1 &&
        grep "^Subject: =?iso-8859-2?q?utf8-s=C3=BCbj=C3=ABct?=" msgtxt1
'

test_expect_success $PREREQ 'detects ambiguous reference/file conflict' '
        echo main >main &&
        git add main &&
        git commit -m"add main" &&
        test_must_fail git send-email --dry-run main 2>errors &&
        grep disambiguate errors
'

test_expect_success $PREREQ 'feed two files' '
        rm -fr outdir &&
        git format-patch -2 -o outdir &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                outdir/000?-*.patch 2>errors >out &&
        grep "^Subject: " out >subjects &&
        test "z$(sed -n -e 1p subjects)" = "zSubject: [PATCH 1/2] Second." &&
        test "z$(sed -n -e 2p subjects)" = "zSubject: [PATCH 2/2] add main"
'

test_expect_success $PREREQ 'in-reply-to but no threading' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --in-reply-to="<in-reply-id@example.com>" \
                --no-thread \
                $patches >out &&
        grep "In-Reply-To: <in-reply-id@example.com>" out
'

test_expect_success $PREREQ 'no in-reply-to and no threading' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --no-thread \
                $patches >stdout &&
        ! grep "In-Reply-To: " stdout
'

test_expect_success $PREREQ 'threading but no chain-reply-to' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --thread \
                --no-chain-reply-to \
                $patches $patches >stdout &&
        grep "In-Reply-To: " stdout
'

test_expect_success $PREREQ 'override in-reply-to if no threading' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --no-thread \
                --in-reply-to="override" \
                $threaded_patches >stdout &&
        grep "In-Reply-To: <override>" stdout
'

test_expect_success $PREREQ 'sendemail.to works' '
        git config --replace-all sendemail.to "Somebody <somebody@ex.com>" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                $patches >stdout &&
        grep "To: Somebody <somebody@ex.com>" stdout
'

test_expect_success $PREREQ 'setup sendemail.identity' '
        git config --replace-all sendemail.to "default@example.com" &&
        git config --replace-all sendemail.isp.to "isp@example.com" &&
        git config --replace-all sendemail.cloud.to "cloud@example.com"
'

test_expect_success $PREREQ 'sendemail.identity: reads the correct identity config' '
        git -c sendemail.identity=cloud send-email \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: cloud@example.com" stdout
'

test_expect_success $PREREQ 'sendemail.identity: identity overrides sendemail.identity' '
        git -c sendemail.identity=cloud send-email \
                --identity=isp \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: isp@example.com" stdout
'

test_expect_success $PREREQ 'sendemail.identity: --no-identity clears previous identity' '
        git -c sendemail.identity=cloud send-email \
                --no-identity \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: default@example.com" stdout
'

test_expect_success $PREREQ 'sendemail.identity: bool identity variable existence overrides' '
        git -c sendemail.identity=cloud \
                -c sendemail.xmailer=true \
                -c sendemail.cloud.xmailer=false \
                send-email \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: cloud@example.com" stdout &&
        ! grep "X-Mailer" stdout
'

test_expect_success $PREREQ 'sendemail.identity: bool variable fallback' '
        git -c sendemail.identity=cloud \
                -c sendemail.xmailer=false \
                send-email \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: cloud@example.com" stdout &&
        ! grep "X-Mailer" stdout
'

test_expect_success $PREREQ 'sendemail.identity: bool variable without a value' '
        git -c sendemail.xmailer \
                send-email \
                --dry-run \
                --from="nobody@example.com" \
                $patches >stdout &&
        grep "To: default@example.com" stdout &&
        grep "X-Mailer" stdout
'

test_expect_success $PREREQ '--no-to overrides sendemail.to' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --no-to \
                --to=nobody@example.com \
                $patches >stdout &&
        grep "To: nobody@example.com" stdout &&
        ! grep "To: Somebody <somebody@ex.com>" stdout
'

test_expect_success $PREREQ 'sendemail.cc works' '
        git config --replace-all sendemail.cc "Somebody <somebody@ex.com>" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                $patches >stdout &&
        grep "Cc: Somebody <somebody@ex.com>" stdout
'

test_expect_success $PREREQ '--no-cc overrides sendemail.cc' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --no-cc \
                --cc=bodies@example.com \
                --to=nobody@example.com \
                $patches >stdout &&
        grep "Cc: bodies@example.com" stdout &&
        ! grep "Cc: Somebody <somebody@ex.com>" stdout
'

test_expect_success $PREREQ 'sendemail.bcc works' '
        git config --replace-all sendemail.bcc "Other <other@ex.com>" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server relay.example.com \
                $patches >stdout &&
        grep "RCPT TO:<other@ex.com>" stdout
'

test_expect_success $PREREQ '--no-bcc overrides sendemail.bcc' '
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --no-bcc \
                --bcc=bodies@example.com \
                --to=nobody@example.com \
                --smtp-server relay.example.com \
                $patches >stdout &&
        grep "RCPT TO:<bodies@example.com>" stdout &&
        ! grep "RCPT TO:<other@ex.com>" stdout
'

test_expect_success $PREREQ 'patches To headers are used by default' '
        patch=$(git format-patch -1 --to="bodies@example.com") &&
        test_when_finished "rm $patch" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --smtp-server relay.example.com \
                $patch >stdout &&
        grep "RCPT TO:<bodies@example.com>" stdout
'

test_expect_success $PREREQ 'patches To headers are appended to' '
        patch=$(git format-patch -1 --to="bodies@example.com") &&
        test_when_finished "rm $patch" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server relay.example.com \
                $patch >stdout &&
        grep "RCPT TO:<bodies@example.com>" stdout &&
        grep "RCPT TO:<nobody@example.com>" stdout
'

test_expect_success $PREREQ 'To headers from files reset each patch' '
        patch1=$(git format-patch -1 --to="bodies@example.com") &&
        patch2=$(git format-patch -1 --to="other@example.com" HEAD~) &&
        test_when_finished "rm $patch1 && rm $patch2" &&
        git send-email \
                --dry-run \
                --from="Example <nobody@example.com>" \
                --to="nobody@example.com" \
                --smtp-server relay.example.com \
                $patch1 $patch2 >stdout &&
        test $(grep -c "RCPT TO:<bodies@example.com>" stdout) = 1 &&
        test $(grep -c "RCPT TO:<nobody@example.com>" stdout) = 2 &&
        test $(grep -c "RCPT TO:<other@example.com>" stdout) = 1
'

test_expect_success $PREREQ 'setup expect' '
cat >email-using-8bit <<\EOF
From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001
Message-ID: <bogus-message-id@example.com>
From: author@example.com
Date: Sat, 12 Jun 2010 15:53:58 +0200
Subject: subject goes here

Dieser deutsche Text enthält einen Umlaut!
EOF
'

test_expect_success $PREREQ 'setup expect' '
        echo "Subject: subject goes here" >expected
'

test_expect_success $PREREQ 'ASCII subject is not RFC2047 quoted' '
        clean_fake_sendmail &&
        echo bogus |
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        --8bit-encoding=UTF-8 \
                        email-using-8bit >stdout &&
        grep "Subject" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >content-type-decl <<-\EOF
        MIME-Version: 1.0
        Content-Type: text/plain; charset=UTF-8
        Content-Transfer-Encoding: 8bit
        EOF
'

test_expect_success $PREREQ 'asks about and fixes 8bit encodings' '
        clean_fake_sendmail &&
        echo |
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        email-using-8bit >stdout &&
        grep "do not declare a Content-Transfer-Encoding" stdout &&
        grep email-using-8bit stdout &&
        grep "Which 8bit encoding" stdout &&
        grep -E "Content|MIME" msgtxt1 >actual &&
        test_cmp content-type-decl actual
'

test_expect_success $PREREQ 'sendemail.8bitEncoding works' '
        clean_fake_sendmail &&
        git config sendemail.assume8bitEncoding UTF-8 &&
        echo bogus |
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        email-using-8bit >stdout &&
        grep -E "Content|MIME" msgtxt1 >actual &&
        test_cmp content-type-decl actual
'

test_expect_success $PREREQ 'sendemail.8bitEncoding in .git/config overrides --global .gitconfig' '
        clean_fake_sendmail &&
        git config sendemail.assume8bitEncoding UTF-8 &&
        test_when_finished "rm -rf home" &&
        mkdir home &&
        git config -f home/.gitconfig sendemail.assume8bitEncoding "bogus too" &&
        echo bogus |
        env HOME="$(pwd)/home" DEBUG=1 \
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        email-using-8bit >stdout &&
        grep -E "Content|MIME" msgtxt1 >actual &&
        test_cmp content-type-decl actual
'

test_expect_success $PREREQ '--8bit-encoding overrides sendemail.8bitEncoding' '
        clean_fake_sendmail &&
        git config sendemail.assume8bitEncoding "bogus too" &&
        echo bogus |
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        --8bit-encoding=UTF-8 \
                        email-using-8bit >stdout &&
        grep -E "Content|MIME" msgtxt1 >actual &&
        test_cmp content-type-decl actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >email-using-8bit <<-\EOF
        From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001
        Message-ID: <bogus-message-id@example.com>
        From: author@example.com
        Date: Sat, 12 Jun 2010 15:53:58 +0200
        Subject: Dieser Betreff enthält auch einen Umlaut!

        Nothing to see here.
        EOF
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        Subject: =?UTF-8?q?Dieser=20Betreff=20enth=C3=A4lt=20auch=20einen=20Umlaut!?=
        EOF
'

test_expect_success $PREREQ '--8bit-encoding also treats subject' '
        clean_fake_sendmail &&
        echo bogus |
        git send-email --from=author@example.com --to=nobody@example.com \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        --8bit-encoding=UTF-8 \
                        email-using-8bit >stdout &&
        grep "Subject" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >email-using-8bit <<-\EOF
        From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001
        Message-ID: <bogus-message-id@example.com>
        From: A U Thor <author@example.com>
        Date: Sat, 12 Jun 2010 15:53:58 +0200
        Content-Type: text/plain; charset=UTF-8
        Subject: Nothing to see here.

        Dieser Betreff enthält auch einen Umlaut!
        EOF
'

test_expect_success $PREREQ '--transfer-encoding overrides sendemail.transferEncoding' '
        clean_fake_sendmail &&
        test_must_fail git -c sendemail.transferEncoding=8bit \
                send-email \
                --transfer-encoding=7bit \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-8bit \
                2>errors >out &&
        grep "cannot send message as 7bit" errors &&
        test -z "$(ls msgtxt*)"
'

test_expect_success $PREREQ 'sendemail.transferEncoding via config' '
        clean_fake_sendmail &&
        test_must_fail git -c sendemail.transferEncoding=7bit \
                send-email \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-8bit \
                2>errors >out &&
        grep "cannot send message as 7bit" errors &&
        test -z "$(ls msgtxt*)"
'

test_expect_success $PREREQ 'sendemail.transferEncoding via cli' '
        clean_fake_sendmail &&
        test_must_fail git send-email \
                --transfer-encoding=7bit \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-8bit \
                2>errors >out &&
        grep "cannot send message as 7bit" errors &&
        test -z "$(ls msgtxt*)"
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        Dieser Betreff enth=C3=A4lt auch einen Umlaut!
        EOF
'

test_expect_success $PREREQ '8-bit and sendemail.transferencoding=quoted-printable' '
        clean_fake_sendmail &&
        git send-email \
                --transfer-encoding=quoted-printable \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-8bit \
                2>errors >out &&
        sed "1,/^$/d" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        RGllc2VyIEJldHJlZmYgZW50aMOkbHQgYXVjaCBlaW5lbiBVbWxhdXQhCg==
        EOF
'

test_expect_success $PREREQ '8-bit and sendemail.transferencoding=base64' '
        clean_fake_sendmail &&
        git send-email \
                --transfer-encoding=base64 \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-8bit \
                2>errors >out &&
        sed "1,/^$/d" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >email-using-qp <<-\EOF
        From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001
        Message-ID: <bogus-message-id@example.com>
        From: A U Thor <author@example.com>
        Date: Sat, 12 Jun 2010 15:53:58 +0200
        MIME-Version: 1.0
        Content-Transfer-Encoding: quoted-printable
        Content-Type: text/plain; charset=UTF-8
        Subject: Nothing to see here.

        Dieser Betreff enth=C3=A4lt auch einen Umlaut!
        EOF
'

test_expect_success $PREREQ 'convert from quoted-printable to base64' '
        clean_fake_sendmail &&
        git send-email \
                --transfer-encoding=base64 \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-qp \
                2>errors >out &&
        sed "1,/^$/d" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' "
tr -d '\\015' | tr '%' '\\015' >email-using-crlf <<EOF
From fe6ecc66ece37198fe5db91fa2fc41d9f4fe5cc4 Mon Sep 17 00:00:00 2001
Message-ID: <bogus-message-id@example.com>
From: A U Thor <author@example.com>
Date: Sat, 12 Jun 2010 15:53:58 +0200
Content-Type: text/plain; charset=UTF-8
Subject: Nothing to see here.

Look, I have a CRLF and an = sign!%
EOF
"

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        Look, I have a CRLF and an =3D sign!=0D
        EOF
'

test_expect_success $PREREQ 'CRLF and sendemail.transferencoding=quoted-printable' '
        clean_fake_sendmail &&
        git send-email \
                --transfer-encoding=quoted-printable \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-crlf \
                2>errors >out &&
        sed "1,/^$/d" msgtxt1 >actual &&
        test_cmp expected actual
'

test_expect_success $PREREQ 'setup expect' '
        cat >expected <<-\EOF
        TG9vaywgSSBoYXZlIGEgQ1JMRiBhbmQgYW4gPSBzaWduIQ0K
        EOF
'

test_expect_success $PREREQ 'CRLF and sendemail.transferencoding=base64' '
        clean_fake_sendmail &&
        git send-email \
                --transfer-encoding=base64 \
                --smtp-server="$(pwd)/fake.sendmail" \
                email-using-crlf \
                2>errors >out &&
        sed "1,/^$/d" msgtxt1 >actual &&
        test_cmp expected actual
'


# Note that the patches in this test are deliberately out of order; we
# want to make sure it works even if the cover-letter is not in the
# first mail.
test_expect_success $PREREQ 'refusing to send cover letter template' '
        clean_fake_sendmail &&
        rm -fr outdir &&
        git format-patch --cover-letter -2 -o outdir &&
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0002-*.patch \
                outdir/0000-*.patch \
                outdir/0001-*.patch \
                2>errors >out &&
        grep "SUBJECT HERE" errors &&
        test -z "$(ls msgtxt*)"
'

test_expect_success $PREREQ '--force sends cover letter template anyway' '
        clean_fake_sendmail &&
        rm -fr outdir &&
        git format-patch --cover-letter -2 -o outdir &&
        git send-email \
                --force \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0002-*.patch \
                outdir/0000-*.patch \
                outdir/0001-*.patch \
                2>errors >out &&
        ! grep "SUBJECT HERE" errors &&
        test -n "$(ls msgtxt*)"
'

test_cover_addresses () {
        header="$1"
        shift
        clean_fake_sendmail &&
        rm -fr outdir &&
        git format-patch --cover-letter -2 -o outdir &&
        cover=$(echo outdir/0000-*.patch) &&
        mv $cover cover-to-edit.patch &&
        perl -pe "s/^From:/$header: extra\@address.com\nFrom:/" cover-to-edit.patch >"$cover" &&
        git send-email \
                --force \
                --from="Example <nobody@example.com>" \
                --no-to --no-cc \
                "$@" \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0000-*.patch \
                outdir/0001-*.patch \
                outdir/0002-*.patch \
                2>errors >out &&
        grep "^$header: extra@address.com" msgtxt1 >to1 &&
        grep "^$header: extra@address.com" msgtxt2 >to2 &&
        grep "^$header: extra@address.com" msgtxt3 >to3 &&
        test_line_count = 1 to1 &&
        test_line_count = 1 to2 &&
        test_line_count = 1 to3
}

test_expect_success $PREREQ 'to-cover adds To to all mail' '
        test_cover_addresses "To" --to-cover
'

test_expect_success $PREREQ 'cc-cover adds Cc to all mail' '
        test_cover_addresses "Cc" --cc-cover
'

test_expect_success $PREREQ 'tocover adds To to all mail' '
        test_config sendemail.tocover true &&
        test_cover_addresses "To"
'

test_expect_success $PREREQ 'cccover adds Cc to all mail' '
        test_config sendemail.cccover true &&
        test_cover_addresses "Cc"
'

test_expect_success $PREREQ 'escaped quotes in sendemail.aliasfiletype=mutt' '
        clean_fake_sendmail &&
        echo "alias sbd \\\"Dot U. Sir\\\" <somebody@example.org>" >.mutt &&
        git config --replace-all sendemail.aliasesfile "$(pwd)/.mutt" &&
        git config sendemail.aliasfiletype mutt &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=sbd \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0001-*.patch \
                2>errors >out &&
        grep "^!somebody@example\.org!$" commandline1 &&
        grep -F "To: \"Dot U. Sir\" <somebody@example.org>" out
'

test_expect_success $PREREQ 'sendemail.aliasfiletype=mailrc' '
        clean_fake_sendmail &&
        echo "alias sbd  somebody@example.org" >.mailrc &&
        git config --replace-all sendemail.aliasesfile "$(pwd)/.mailrc" &&
        git config sendemail.aliasfiletype mailrc &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=sbd \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0001-*.patch \
                2>errors >out &&
        grep "^!somebody@example\.org!$" commandline1
'

test_expect_success $PREREQ 'sendemail.aliasesfile=~/.mailrc' '
        clean_fake_sendmail &&
        echo "alias sbd  someone@example.org" >"$HOME/.mailrc" &&
        git config --replace-all sendemail.aliasesfile "~/.mailrc" &&
        git config sendemail.aliasfiletype mailrc &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=sbd \
                --smtp-server="$(pwd)/fake.sendmail" \
                outdir/0001-*.patch \
                2>errors >out &&
        grep "^!someone@example\.org!$" commandline1
'

test_dump_aliases () {
        msg="$1" && shift &&
        filetype="$1" && shift &&
        printf '%s\n' "$@" >expect &&
        cat >.tmp-email-aliases &&

        test_expect_success $PREREQ "$msg" '
                clean_fake_sendmail && rm -fr outdir &&
                git config --replace-all sendemail.aliasesfile \
                        "$(pwd)/.tmp-email-aliases" &&
                git config sendemail.aliasfiletype "$filetype" &&
                git send-email --dump-aliases 2>errors >actual &&
                test_cmp expect actual
        '
}

test_dump_aliases '--dump-aliases sendmail format' \
        'sendmail' \
        'abgroup' \
        'alice' \
        'bcgrp' \
        'bob' \
        'chloe' <<-\EOF
        alice: Alice W Land <awol@example.com>
        bob: Robert Bobbyton <bob@example.com>
        chloe: chloe@example.com
        abgroup: alice, bob
        bcgrp: bob, chloe, Other <o@example.com>
        EOF

test_dump_aliases '--dump-aliases mutt format' \
        'mutt' \
        'alice' \
        'bob' \
        'chloe' \
        'donald' <<-\EOF
        alias alice Alice W Land <awol@example.com>
        alias donald Donald C Carlton <donc@example.com>
        alias bob Robert Bobbyton <bob@example.com>
        alias chloe chloe@example.com
        EOF

test_dump_aliases '--dump-aliases mailrc format' \
        'mailrc' \
        'alice' \
        'bob' \
        'chloe' \
        'eve' <<-\EOF
        alias alice   Alice W Land <awol@example.com>
        alias eve     Eve <eve@example.com>
        alias bob     Robert Bobbyton <bob@example.com>
        alias chloe   chloe@example.com
        EOF

test_dump_aliases '--dump-aliases pine format' \
        'pine' \
        'alice' \
        'bob' \
        'chloe' \
        'eve' <<-\EOF
        alice   Alice W Land    <awol@example.com>
        eve     Eve     <eve@example.com>
        bob     Robert  Bobbyton <bob@example.com>
        chloe           chloe@example.com
        EOF

test_dump_aliases '--dump-aliases gnus format' \
        'gnus' \
        'alice' \
        'bob' \
        'chloe' \
        'eve' <<-\EOF
        (define-mail-alias "alice" "awol@example.com")
        (define-mail-alias "eve" "eve@example.com")
        (define-mail-alias "bob" "bob@example.com")
        (define-mail-alias "chloe" "chloe@example.com")
        EOF

test_expect_success '--dump-aliases must be used alone' '
        test_must_fail git send-email --dump-aliases --to=janice@example.com -1 refs/heads/accounting
'

test_expect_success $PREREQ 'aliases and sendemail.identity' '
        test_must_fail git \
                -c sendemail.identity=cloud \
                -c sendemail.aliasesfile=default-aliases \
                -c sendemail.cloud.aliasesfile=cloud-aliases \
                send-email -1 2>stderr &&
        test_grep "cloud-aliases" stderr
'

test_sendmail_aliases () {
        msg="$1" && shift &&
        expect="$@" &&
        cat >.tmp-email-aliases &&

        test_expect_success $PREREQ "$msg" '
                clean_fake_sendmail && rm -fr outdir &&
                git format-patch -1 -o outdir &&
                git config --replace-all sendemail.aliasesfile \
                        "$(pwd)/.tmp-email-aliases" &&
                git config sendemail.aliasfiletype sendmail &&
                git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=alice --to=bcgrp \
                        --smtp-server="$(pwd)/fake.sendmail" \
                        outdir/0001-*.patch \
                        2>errors >out &&
                for i in $expect
                do
                        grep "^!$i!$" commandline1 || return 1
                done
        '
}

test_sendmail_aliases 'sendemail.aliasfiletype=sendmail' \
        'awol@example\.com' \
        'bob@example\.com' \
        'chloe@example\.com' \
        'o@example\.com' <<-\EOF
        alice: Alice W Land <awol@example.com>
        bob: Robert Bobbyton <bob@example.com>
        # this is a comment
           # this is also a comment
        chloe: chloe@example.com
        abgroup: alice, bob
        bcgrp: bob, chloe, Other <o@example.com>
        EOF

test_sendmail_aliases 'sendmail aliases line folding' \
        alice1 \
        bob1 bob2 \
        chuck1 chuck2 \
        darla1 darla2 darla3 \
        elton1 elton2 elton3 \
        fred1 fred2 \
        greg1 <<-\EOF
        alice: alice1
        bob: bob1,\
        bob2
        chuck: chuck1,
            chuck2
        darla: darla1,\
        darla2,
            darla3
        elton: elton1,
            elton2,\
        elton3
        fred: fred1,\
            fred2
        greg: greg1
        bcgrp: bob, chuck, darla, elton, fred, greg
        EOF

test_sendmail_aliases 'sendmail aliases tolerate bogus line folding' \
        alice1 bob1 <<-\EOF
            alice: alice1
        bcgrp: bob1\
        EOF

test_sendmail_aliases 'sendmail aliases empty' alice bcgrp <<-\EOF
        EOF

test_expect_success $PREREQ 'alias support in To header' '
        clean_fake_sendmail &&
        echo "alias sbd  someone@example.org" >.mailrc &&
        test_config sendemail.aliasesfile ".mailrc" &&
        test_config sendemail.aliasfiletype mailrc &&
        git format-patch --stdout -1 --to=sbd >aliased.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --smtp-server="$(pwd)/fake.sendmail" \
                aliased.patch \
                2>errors >out &&
        grep "^!someone@example\.org!$" commandline1
'

test_expect_success $PREREQ 'alias support in Cc header' '
        clean_fake_sendmail &&
        echo "alias sbd  someone@example.org" >.mailrc &&
        test_config sendemail.aliasesfile ".mailrc" &&
        test_config sendemail.aliasfiletype mailrc &&
        git format-patch --stdout -1 --cc=sbd >aliased.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --smtp-server="$(pwd)/fake.sendmail" \
                aliased.patch \
                2>errors >out &&
        grep "^!someone@example\.org!$" commandline1
'

test_expect_success $PREREQ 'tocmd works with aliases' '
        clean_fake_sendmail &&
        echo "alias sbd  someone@example.org" >.mailrc &&
        test_config sendemail.aliasesfile ".mailrc" &&
        test_config sendemail.aliasfiletype mailrc &&
        git format-patch --stdout -1 >tocmd.patch &&
        echo tocmd--sbd >>tocmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to-cmd=./tocmd-sed \
                --smtp-server="$(pwd)/fake.sendmail" \
                tocmd.patch \
                2>errors >out &&
        grep "^!someone@example\.org!$" commandline1
'

test_expect_success $PREREQ 'cccmd works with aliases' '
        clean_fake_sendmail &&
        echo "alias sbd  someone@example.org" >.mailrc &&
        test_config sendemail.aliasesfile ".mailrc" &&
        test_config sendemail.aliasfiletype mailrc &&
        git format-patch --stdout -1 >cccmd.patch &&
        echo cccmd--sbd >>cccmd.patch &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --cc-cmd=./cccmd-sed \
                --smtp-server="$(pwd)/fake.sendmail" \
                cccmd.patch \
                2>errors >out &&
        grep "^!someone@example\.org!$" commandline1
'

do_xmailer_test () {
        expected=$1 params=$2 &&
        git format-patch -1 &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=someone@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                $params \
                0001-*.patch \
                2>errors >out &&
        { grep '^X-Mailer:' out || :; } >mailer &&
        test_line_count = $expected mailer
}

test_expect_success $PREREQ '--[no-]xmailer without any configuration' '
        do_xmailer_test 1 "--xmailer" &&
        do_xmailer_test 0 "--no-xmailer"
'

test_expect_success $PREREQ '--[no-]xmailer with sendemail.xmailer=true' '
        test_config sendemail.xmailer true &&
        do_xmailer_test 1 "" &&
        do_xmailer_test 0 "--no-xmailer" &&
        do_xmailer_test 1 "--xmailer"
'

test_expect_success $PREREQ '--[no-]xmailer with sendemail.xmailer' '
        test_when_finished "test_unconfig sendemail.xmailer" &&
        cat >>.git/config <<-\EOF &&
        [sendemail]
                xmailer
        EOF
        test_config sendemail.xmailer true &&
        do_xmailer_test 1 "" &&
        do_xmailer_test 0 "--no-xmailer" &&
        do_xmailer_test 1 "--xmailer"
'

test_expect_success $PREREQ '--[no-]xmailer with sendemail.xmailer=false' '
        test_config sendemail.xmailer false &&
        do_xmailer_test 0 "" &&
        do_xmailer_test 0 "--no-xmailer" &&
        do_xmailer_test 1 "--xmailer"
'

test_expect_success $PREREQ '--[no-]xmailer with sendemail.xmailer=' '
        test_config sendemail.xmailer "" &&
        do_xmailer_test 0 "" &&
        do_xmailer_test 0 "--no-xmailer" &&
        do_xmailer_test 1 "--xmailer"
'

test_expect_success $PREREQ 'setup expected-list' '
        git send-email \
        --dry-run \
        --from="Example <from@example.com>" \
        --to="To 1 <to1@example.com>" \
        --to="to2@example.com" \
        --to="to3@example.com" \
        --cc="Cc 1 <cc1@example.com>" \
        --cc="Cc2 <cc2@example.com>" \
        --bcc="bcc1@example.com" \
        --bcc="bcc2@example.com" \
        0001-add-main.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 <from@example.com>" \
        --to="To 1 <to1@example.com>, to2@example.com" \
        --to="to3@example.com" \
        --cc="Cc 1 <cc1@example.com>, Cc2 <cc2@example.com>" \
        --bcc="bcc1@example.com, bcc2@example.com" \
        0001-add-main.patch | replace_variable_fields \
        >actual-list &&
        test_cmp expected-list actual-list
'

test_expect_success $PREREQ 'aliases work with email list' '
        echo "alias to2 to2@example.com" >.mutt &&
        echo "alias cc1 Cc 1 <cc1@example.com>" >>.mutt &&
        test_config sendemail.aliasesfile ".mutt" &&
        test_config sendemail.aliasfiletype mutt &&
        git send-email \
        --dry-run \
        --from="Example <from@example.com>" \
        --to="To 1 <to1@example.com>, to2, to3@example.com" \
        --cc="cc1, Cc2 <cc2@example.com>" \
        --bcc="bcc1@example.com, bcc2@example.com" \
        0001-add-main.patch | replace_variable_fields \
        >actual-list &&
        test_cmp expected-list actual-list
'

test_expect_success $PREREQ 'leading and trailing whitespaces are removed' '
        echo "alias to2 to2@example.com" >.mutt &&
        echo "alias cc1 Cc 1 <cc1@example.com>" >>.mutt &&
        test_config sendemail.aliasesfile ".mutt" &&
        test_config sendemail.aliasfiletype mutt &&
        TO1=$(echo "QTo 1 <to1@example.com>" | q_to_tab) &&
        TO2=$(echo "QZto2" | qz_to_tab_space) &&
        CC1=$(echo "cc1" | append_cr) &&
        BCC1=$(echo " bcc1@example.com Q" | q_to_nul) &&
        git send-email \
        --dry-run \
        --from="        Example <from@example.com>" \
        --to="$TO1" \
        --to="$TO2" \
        --to="  to3@example.com   " \
        --cc="$CC1" \
        --cc="Cc2 <cc2@example.com>" \
        --bcc="$BCC1" \
        --bcc="bcc2@example.com" \
        0001-add-main.patch | replace_variable_fields \
        >actual-list &&
        test_cmp expected-list actual-list
'

test_expect_success $PREREQ 'test using command name with --sendmail-cmd' '
        clean_fake_sendmail &&
        PATH="$PWD:$PATH" \
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --sendmail-cmd="fake.sendmail" \
                HEAD^ &&
        test_path_is_file commandline1
'

test_expect_success $PREREQ 'test using arguments with --sendmail-cmd' '
        clean_fake_sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --sendmail-cmd='\''"$(pwd)/fake.sendmail" -f nobody@example.com'\'' \
                HEAD^ &&
        test_path_is_file commandline1
'

test_expect_success $PREREQ 'test shell expression with --sendmail-cmd' '
        clean_fake_sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --sendmail-cmd='\''f() { "$(pwd)/fake.sendmail" "$@"; };f'\'' \
                HEAD^ &&
        test_path_is_file commandline1
'

test_expect_success $PREREQ 'set up in-reply-to/references patches' '
        cat >has-reply.patch <<-\EOF &&
        From: A U Thor <author@example.com>
        Subject: patch with in-reply-to
        Message-ID: <patch.with.in.reply.to@example.com>
        In-Reply-To: <replied.to@example.com>
        References: <replied.to@example.com>

        This is the body.
        EOF
        cat >no-reply.patch <<-\EOF
        From: A U Thor <author@example.com>
        Subject: patch without in-reply-to
        Message-ID: <patch.without.in.reply.to@example.com>

        This is the body.
        EOF
'

test_expect_success $PREREQ 'patch reply headers correct with --no-thread' '
        clean_fake_sendmail &&
        git send-email \
                --no-thread \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                has-reply.patch no-reply.patch &&
        grep "In-Reply-To: <replied.to@example.com>" msgtxt1 &&
        grep "References: <replied.to@example.com>" msgtxt1 &&
        ! grep replied.to@example.com msgtxt2
'

test_expect_success $PREREQ 'cmdline in-reply-to used with --no-thread' '
        clean_fake_sendmail &&
        git send-email \
                --no-thread \
                --in-reply-to="<cmdline.reply@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                has-reply.patch no-reply.patch &&
        grep "In-Reply-To: <cmdline.reply@example.com>" msgtxt1 &&
        grep "References: <cmdline.reply@example.com>" msgtxt1 &&
        grep "In-Reply-To: <cmdline.reply@example.com>" msgtxt2 &&
        grep "References: <cmdline.reply@example.com>" msgtxt2
'

test_expect_success $PREREQ 'invoke hook' '
        test_hook sendemail-validate <<-\EOF &&
        # test that we have the correct environment variable, pwd, and
        # argument
        case "$GIT_DIR" in
        *.git)
                true
                ;;
        *)
                false
                ;;
        esac &&
        test -f 0001-add-main.patch &&
        grep "add main" "$1"
        EOF

        mkdir subdir &&
        (
                # Test that it works even if we are not at the root of the
                # working tree
                cd subdir &&
                git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/../fake.sendmail" \
                        ../0001-add-main.patch &&

                # Verify error message when a patch is rejected by the hook
                sed -e "s/add main/x/" ../0001-add-main.patch >../another.patch &&
                test_must_fail git send-email \
                        --from="Example <nobody@example.com>" \
                        --to=nobody@example.com \
                        --smtp-server="$(pwd)/../fake.sendmail" \
                        ../another.patch 2>err &&
                test_grep "rejected by sendemail-validate hook" err
        )
'

expected_file_counter_output () {
        total=$1
        count=0
        while test $count -ne $total
        do
                count=$((count + 1)) &&
                echo "$count/$total" || return
        done
}

test_expect_success $PREREQ '--validate hook allows counting of messages' '
        test_when_finished "rm -rf my-hooks.log" &&
        test_config core.hooksPath "my-hooks" &&
        mkdir -p my-hooks &&

        write_script my-hooks/sendemail-validate <<-\EOF &&
                num=$GIT_SENDEMAIL_FILE_COUNTER &&
                tot=$GIT_SENDEMAIL_FILE_TOTAL &&
                echo "$num/$tot" >>my-hooks.log || exit 1
        EOF

        >my-hooks.log &&
        expected_file_counter_output 4 >expect &&
        git send-email \
                --from="Example <from@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                --validate -3 --cover-letter --force &&
        test_cmp expect my-hooks.log
'

test_expect_success $PREREQ 'test that send-email works outside a repo' '
        nongit git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                "$(pwd)/0001-add-main.patch"
'

test_expect_success $PREREQ 'send-email relays -v 3 to format-patch' '
        test_when_finished "rm -f out" &&
        git send-email --dry-run -v 3 -1 >out &&
        grep "PATCH v3" out
'

test_expect_success $PREREQ 'test that sendmail config is rejected' '
        test_config sendmail.program sendmail &&
        test_must_fail git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                HEAD^ 2>err &&
        test_grep "found configuration options for '"'"sendmail"'"'" err
'

test_expect_success $PREREQ 'test that sendmail config rejection is specific' '
        test_config resendmail.program sendmail &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                HEAD^
'

test_expect_success $PREREQ 'test forbidSendmailVariables behavior override' '
        test_config sendmail.program sendmail &&
        test_config sendemail.forbidSendmailVariables false &&
        git send-email \
                --from="Example <nobody@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                HEAD^
'

test_expect_success $PREREQ '--compose handles lowercase headers' '
        write_script fake-editor <<-\EOF &&
        sed "s/^[Ff][Rr][Oo][Mm]:.*/from: edited-from@example.com/" "$1" >"$1.tmp" &&
        mv "$1.tmp" "$1"
        EOF
        clean_fake_sendmail &&
        git send-email \
                --compose \
                --from="Example <from@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                HEAD^ &&
        grep "From: edited-from@example.com" msgtxt1
'

test_expect_success $PREREQ '--compose handles to headers' '
        write_script fake-editor <<-\EOF &&
        sed "s/^To: .*/&, edited-to@example.com/" <"$1" >"$1.tmp" &&
        echo this is the body >>"$1.tmp" &&
        mv "$1.tmp" "$1"
        EOF
        clean_fake_sendmail &&
        GIT_SEND_EMAIL_NOTTY=1 \
        git send-email \
                --compose \
                --from="Example <from@example.com>" \
                --to=nobody@example.com \
                --smtp-server="$(pwd)/fake.sendmail" \
                HEAD^ &&
        # Check both that the cover letter used our modified "to" line,
        # but also that it was picked up for the patch.
        q_to_tab >expect <<-\EOF &&
        To: nobody@example.com,
        Qedited-to@example.com
        EOF
        grep -A1 "^To:" msgtxt1 >msgtxt1.to &&
        test_cmp expect msgtxt1.to &&
        grep -A1 "^To:" msgtxt2 >msgtxt2.to &&
        test_cmp expect msgtxt2.to
'

test_done