# Copyright (C) 2009, 2011-2012 Free Software Foundation, Inc.
#
# Copying and distribution of this file, with or without modification,
# in any medium, are permitted without royalty provided the copyright
# notice and this notice are preserved.

. $srcdir/test-lib.sh

require cat
use_local_patch
use_tmpdir

# ==============================================================

# IEEE Std 1003.1-2008 requires that with -o outfile, multiple patches
# for a single file shall be applied to the intermediate versions of the
# file created by any previous patches, and shall result in multiple,
# concatenated versions of the file being written to outfile.

cat > a.diff <<EOF
--- a
+++ a
@@ -1 +1 @@
-one
+two
--- a
+++ a
@@ -1 +1 @@
-two
+three
EOF

echo one > a

check 'patch -o a.new a < a.diff' <<EOF
patching file a.new (read from a)
patching file a.new (read from a)
EOF

check 'cat a.new' <<EOF
two
three
EOF