- lib/backup-files.c: Do not modify the original file whenever

  possible: previously, a ``quilt add'' usually linked the file
  to he backup and then copied the backup over the file to ensure
  a link count of one. Recognize this case, and create a copy in
  the first place instead.

1 files changed, 57 insertions, 0 deletions

diff --git a/test/nolink.test b/test/nolink.test
new file mode 100644
index 0000000..d29b7c6
--- /dev/null
+++ b/test/nolink.test
@@ -0,0 +1,57 @@
+	$ rm -rf d
+	$ mkdir -p d/patches
+	$ cd d
+
+	$ echo foo > foo
+	$ ln foo foo2
+	$ ls -l foo | awk '{ print $2 }'
+	> 2
+
+	$ quilt new test.diff
+	> Patch patches/test.diff is now on top
+
+	$ quilt add foo
+	> File foo added to patch patches/test.diff
+
+	$ ls -l foo | awk '{ print $2 }'
+	> 1
+
+	$ ls -l .pc/test.diff/foo | awk '{ print $2 }'
+	> 2
+
+	$ echo "foo changed" > foo
+	$ quilt refresh
+	> Refreshed patch patches/test.diff
+
+	$ quilt new test2.diff
+	> Patch patches/test2.diff is now on top
+
+	$ quilt add foo
+	> File foo added to patch patches/test2.diff
+
+	$ ls -l foo | awk '{ print $2 }'
+	> 1
+
+	$ ls -l .pc/test2.diff/foo | awk '{ print $2 }'
+	> 1
+
+	$ echo "foo changed again" > foo
+	$ quilt refresh
+	> Refreshed patch patches/test2.diff
+
+	$ quilt pop -q
+	> Removing patch patches/test2.diff
+	> Now at patch patches/test.diff
+
+	$ ls -l foo | awk '{ print $2 }'
+	> 1
+
+	$ quilt pop -q
+	> Removing patch patches/test.diff
+	> No patches applied
+
+	$ ls -l foo | awk '{ print $2 }'
+	> 2
+
+	$ cd ..
+	$ rm -rf d