Merge branch 'jt/mailinfo-fold-in-body-headers'

When "git format-patch --stdout" output is placed as an in-body
header and it uses the RFC2822 header folding, "git am" failed to
put the header line back into a single logical line.  The
underlying "git mailinfo" was taught to handle this properly.

* jt/mailinfo-fold-in-body-headers:
  mailinfo: handle in-body header continuations
  mailinfo: make is_scissors_line take plain char *
  mailinfo: separate in-body header processing

10 files changed, 75 insertions, 3 deletions

diff --git a/t/t4150-am.sh b/t/t4150-am.sh
index 9ce9424d15..89a5bacac5 100755
--- a/t/t4150-am.sh
+++ b/t/t4150-am.sh
@@ -977,4 +977,27 @@ test_expect_success 'am --patch-format=mboxrd handles mboxrd' '
 	test_cmp msg out
 '
 
+test_expect_success 'am works with multi-line in-body headers' '
+	FORTY="String that has a length of more than forty characters" &&
+	LONG="$FORTY $FORTY" &&
+	rm -fr .git/rebase-apply &&
+	git checkout -f first &&
+	echo one >> file &&
+	git commit -am "$LONG" --author="$LONG <long@example.com>" &&
+	git format-patch --stdout -1 >patch &&
+	# bump from, date, and subject down to in-body header
+	perl -lpe "
+		if (/^From:/) {
+			print \"From: x <x\@example.com>\";
+			print \"Date: Sat, 1 Jan 2000 00:00:00 +0000\";
+			print \"Subject: x\n\";
+		}
+	" patch >msg &&
+	git checkout HEAD^ &&
+	git am msg &&
+	# Ensure that the author and full message are present
+	git cat-file commit HEAD | grep "^author.*long@example.com" &&
+	git cat-file commit HEAD | grep "^$LONG"
+'
+
 test_done
diff --git a/t/t5100-mailinfo.sh b/t/t5100-mailinfo.sh
index 1a5a546230..e173c33f4b 100755
--- a/t/t5100-mailinfo.sh
+++ b/t/t5100-mailinfo.sh
@@ -11,7 +11,7 @@ test_expect_success 'split sample box' \
 	'git mailsplit -o. "$TEST_DIRECTORY"/t5100/sample.mbox >last &&
 	last=$(cat last) &&
 	echo total is $last &&
-	test $(cat last) = 17'
+	test $(cat last) = 18'
 
 check_mailinfo () {
 	mail=$1 opt=$2
diff --git a/t/t5100/info0018 b/t/t5100/info0018
new file mode 100644
index 0000000000..d53e7491c7
--- /dev/null
+++ b/t/t5100/info0018
@@ -0,0 +1,5 @@
+Author: Another Thor
+Email: a.thor@example.com
+Subject: This one contains a tab and a space
+Date: Fri, 9 Jun 2006 00:44:16 -0700
+
diff --git a/t/t5100/info0018--no-inbody-headers b/t/t5100/info0018--no-inbody-headers
new file mode 100644
index 0000000000..30b17bd913
--- /dev/null
+++ b/t/t5100/info0018--no-inbody-headers
@@ -0,0 +1,5 @@
+Author: A U Thor
+Email: a.u.thor@example.com
+Subject: check multiline inbody headers
+Date: Fri, 9 Jun 2006 00:44:16 -0700
+
diff --git a/t/t5100/msg0015 b/t/t5100/msg0015
index 4abb3d5c6c..e69de29bb2 100644
--- a/t/t5100/msg0015
+++ b/t/t5100/msg0015
@@ -1,2 +0,0 @@
-  - a list
-  - of stuff
diff --git a/t/t5100/msg0018 b/t/t5100/msg0018
new file mode 100644
index 0000000000..56de83d7fc
--- /dev/null
+++ b/t/t5100/msg0018
@@ -0,0 +1,2 @@
+a commit message
+
diff --git a/t/t5100/msg0018--no-inbody-headers b/t/t5100/msg0018--no-inbody-headers
new file mode 100644
index 0000000000..b1e05d3862
--- /dev/null
+++ b/t/t5100/msg0018--no-inbody-headers
@@ -0,0 +1,8 @@
+From: Another Thor
+ <a.thor@example.com>
+Subject: This one contains
+	a tab
+ and a space
+
+a commit message
+
diff --git a/t/t5100/patch0018 b/t/t5100/patch0018
new file mode 100644
index 0000000000..789df6d030
--- /dev/null
+++ b/t/t5100/patch0018
@@ -0,0 +1,6 @@
+diff --git a/foo b/foo
+index e69de29..d95f3ad 100644
+--- a/foo
++++ b/foo
+@@ -0,0 +1 @@
++content
diff --git a/t/t5100/patch0018--no-inbody-headers b/t/t5100/patch0018--no-inbody-headers
new file mode 100644
index 0000000000..789df6d030
--- /dev/null
+++ b/t/t5100/patch0018--no-inbody-headers
@@ -0,0 +1,6 @@
+diff --git a/foo b/foo
+index e69de29..d95f3ad 100644
+--- a/foo
++++ b/foo
+@@ -0,0 +1 @@
++content
diff --git a/t/t5100/sample.mbox b/t/t5100/sample.mbox
index 8b2ae064c3..6d4d0e4474 100644
--- a/t/t5100/sample.mbox
+++ b/t/t5100/sample.mbox
@@ -699,3 +699,22 @@ index e69de29..d95f3ad 100644
 +++ b/foo
 @@ -0,0 +1 @@
 +New content
+From nobody Mon Sep 17 00:00:00 2001
+From: A U Thor <a.u.thor@example.com>
+Subject: check multiline inbody headers
+Date: Fri, 9 Jun 2006 00:44:16 -0700
+
+From: Another Thor
+ <a.thor@example.com>
+Subject: This one contains
+	a tab
+ and a space
+
+a commit message
+
+diff --git a/foo b/foo
+index e69de29..d95f3ad 100644
+--- a/foo
++++ b/foo
+@@ -0,0 +1 @@
++content