~ubuntu-branches/ubuntu/trusty/patch/trusty-security

# 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

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

# Bug #25969: Patch replaces unmodified files

#

# When a patch doesn't actually modify a file (i.e., only rejects),

# the file is still replaced.

cat > a.diff <<EOF

--- a

+++ a

@@ -1 +1 @@

-one

+two

EOF

echo three > a

ln a a.first

check 'patch -b -B backup/ a < a.diff || echo "Status: $?"' <<EOF

patching file a

Hunk #1 FAILED at 1.

1 out of 1 hunk FAILED -- saving rejects to file a.rej

Status: 1

EOF

ncheck 'test a -ef a.first'

check 'cat backup/a' <<EOF

three

EOF

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

# When applying an empty patch to a file with -o, copy the input file.

cat > a.diff <<EOF

EOF

echo three > a

check 'patch -o b a < a.diff' <<EOF

patching file b (read from a)

EOF

check 'cat b' <<EOF

three

EOF