[PATCH v2 17/17] cli/reply: pull proposed subject line from the message, not the index

[Daniel Kahn Gillmor <dkg@fifthhorseman.net>]

Protected subject lines were being emitted in reply when the cleartext
of documents was indexed.  create_reply_message() was pulling the
subject line from the index, rather than pulling it from the
GMimeMessage object that it already has on hand.

This one-line fix to notmuch-reply.c solves that problem, and doesn't
cause any additional tests to fail.

Signed-off-by: Daniel Kahn Gillmor <dkg@fifthhorseman.net>
---
 notmuch-reply.c                      | 2 +-
 test/T356-protected-headers.sh       | 1 -
 test/T358-emacs-protected-headers.sh | 1 -
 3 files changed, 1 insertion(+), 3 deletions(-)

diff --git a/notmuch-reply.c b/notmuch-reply.c
index 2689b247..46bab434 100644
--- a/notmuch-reply.c
+++ b/notmuch-reply.c
@@ -591,7 +591,7 @@ create_reply_message(void *ctx,
 				 from_addr);
     g_mime_object_set_header (GMIME_OBJECT (reply), "From", from_addr, NULL);
 
-    subject = notmuch_message_get_header (message, "subject");
+    subject = g_mime_message_get_subject (mime_message);
     if (subject) {
 	if (strncasecmp (subject, "Re:", 3))
 	    subject = talloc_asprintf (ctx, "Re: %s", subject);
diff --git a/test/T356-protected-headers.sh b/test/T356-protected-headers.sh
index 746c4760..4af018f3 100755
--- a/test/T356-protected-headers.sh
+++ b/test/T356-protected-headers.sh
@@ -100,7 +100,6 @@ test_json_nodes <<<"$output" \
                 'subject:[0]["subject"]="This is a protected header"'
 
 test_begin_subtest "indexed protected subject is not visible in reply header"
-test_subtest_known_broken
 output=$(notmuch reply --format=json 'id:protected-header@crypto.notmuchmail.org')
 test_json_nodes <<<"$output" \
                 'subject:["original"]["headers"]["Subject"]="This is a protected header"' \
diff --git a/test/T358-emacs-protected-headers.sh b/test/T358-emacs-protected-headers.sh
index 765511d4..c195d5c2 100755
--- a/test/T358-emacs-protected-headers.sh
+++ b/test/T358-emacs-protected-headers.sh
@@ -92,7 +92,6 @@ test_expect_equal_file EXPECTED OUTPUT
 
 # notmuch-emacs still leaks the subject line:
 test_begin_subtest "don't leak protected subject during reply, even if indexed"
-test_subtest_known_broken
 test_emacs "(let ((message-hidden-headers '()))
 	    (notmuch-show \"id:protected-header@crypto.notmuchmail.org\")
 	    (notmuch-show-reply)
-- 
2.20.1