send-email: specify content-type of --compose body

If the compose message contains non-ascii characters, then
we assume it is in utf-8 and include the appropriate MIME
headers. If the user has already included a MIME-Version
header, then we assume they know what they are doing and
don't add any headers.

Signed-off-by: Jeff King <peff@peff.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/git-send-email.perl b/git-send-email.perl
index be4a20d7cd562e9b00d93fe71313aed70afe50af..71ba44d69d24bebe26efeada8ec45e23c8b4ee4e 100755 (executable)
--- a/git-send-email.perl
+++ b/git-send-email.perl
@@ -518,8 +518,22 @@ EOT
        open(C,"<",$compose_filename)
                or die "Failed to open $compose_filename : " . $!;
 
+       my $need_8bit_cte = file_has_nonascii($compose_filename);
+       my $in_body = 0;
        while(<C>) {
                next if m/^GIT: /;
+               if (!$in_body && /^\n$/) {
+                       $in_body = 1;
+                       if ($need_8bit_cte) {
+                               print C2 "MIME-Version: 1.0\n",
+                                        "Content-Type: text/plain; ",
+                                          "charset=utf-8\n",
+                                        "Content-Transfer-Encoding: 8bit\n";
+                       }
+               }
+               if (!$in_body && /^MIME-Version:/i) {
+                       $need_8bit_cte = 0;
+               }
                print C2 $_;
        }
        close(C);
@@ -956,3 +970,13 @@ sub validate_patch {
        }
        return undef;
 }
+
+sub file_has_nonascii {
+       my $fn = shift;
+       open(my $fh, '<', $fn)
+               or die "unable to open $fn: $!\n";
+       while (my $line = <$fh>) {
+               return 1 if $line =~ /[^[:ascii:]]/;
+       }
+       return 0;
+}

diff --git a/t/t9001-send-email.sh b/t/t9001-send-email.sh
index c0973b4e6ee2c6a55d1573e2341607c4adfcbb10..e222c4932026c2be4fcb2f590a2f7a30baa3fbe2 100755 (executable)
--- a/t/t9001-send-email.sh
+++ b/t/t9001-send-email.sh
@@ -166,4 +166,48 @@ test_expect_success 'second message is patch' '
        grep "Subject:.*Second" msgtxt2
 '
 
+test_expect_success '--compose adds MIME for utf8 body' '
+       clean_fake_sendmail &&
+       (echo "#!/bin/sh" &&
+        echo "echo utf8 body: àéìöú >>\$1"
+       ) >fake-editor-utf8 &&
+       chmod +x fake-editor-utf8 &&
+       echo y | \
+         GIT_EDITOR=$(pwd)/fake-editor-utf8 \
+         GIT_SEND_EMAIL_NOTTY=1 \
+         git send-email \
+         --compose --subject foo \
+         --from="Example <nobody@example.com>" \
+         --to=nobody@example.com \
+         --smtp-server="$(pwd)/fake.sendmail" \
+         $patches &&
+       grep "^utf8 body" msgtxt1 &&
+       grep "^Content-Type: text/plain; charset=utf-8" msgtxt1
+'
+
+test_expect_success '--compose respects user mime type' '
+       clean_fake_sendmail &&
+       (echo "#!/bin/sh" &&
+        echo "(echo MIME-Version: 1.0"
+        echo " echo Content-Type: text/plain\\; charset=iso-8859-1"
+        echo " echo Content-Transfer-Encoding: 8bit"
+        echo " echo Subject: foo"
+        echo " echo "
+        echo " echo utf8 body: àéìöú) >\$1"
+       ) >fake-editor-utf8-mime &&
+       chmod +x fake-editor-utf8-mime &&
+       echo y | \
+         GIT_EDITOR=$(pwd)/fake-editor-utf8-mime \
+         GIT_SEND_EMAIL_NOTTY=1 \
+         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_done