refresh: Do not remove symlinks

Change the core behavior of quilt to not remove symlinks to the patch
files.

Historical notes:

    This is an 6 year old patch that is still actively used for the
    Yocto Project and others.

    http://lists.nongnu.org/archive/html/quilt-dev/2008-01/msg00004.html

    Revised again here:

    http://comments.gmane.org/gmane.comp.handhelds.openembedded/34224

[Edited by Jean Delvare: removed a compatibility option, we'll
introduce it only if users ask for it. Also cleaned up the test
case a bit.]

Signed-off-by: Jason Wessel <jason.wessel@windriver.com>

1 files changed, 53 insertions, 0 deletions

diff --git a/test/symlink.test b/test/symlink.test
new file mode 100644
index 0000000..9e5e797
--- /dev/null
+++ b/test/symlink.test
@@ -0,0 +1,53 @@
+	$ mkdir patches
+
+# quilt should not remove symlinks to patch files
+	$ echo foo > foo
+	$ quilt new test.diff
+	> Patch patches/test.diff is now on top
+
+	$ quilt add foo
+	> File foo added to patch patches/test.diff
+
+	$ echo "foo changed" > foo
+	$ quilt refresh
+	> Refreshed patch patches/test.diff
+
+# Setup a symlink
+	$ mv patches/test.diff .
+	$ ln -s ../test.diff patches/test.diff
+	$ readlink patches/test.diff
+	> ../test.diff
+
+# Test the refresh
+	$ echo "foo changed 2" > foo
+	$ quilt refresh --no-index -p ab
+	> Refreshed patch patches/test.diff
+
+	$ readlink patches/test.diff
+	> ../test.diff
+
+# Test the refresh --backup
+	$ echo "foo changed 3" > foo
+	$ quilt refresh --backup --no-index -p ab
+	> Refreshed patch patches/test.diff
+
+	$ readlink patches/test.diff
+	> ../test.diff
+
+	$ cat patches/test.diff
+	> --- a/foo
+	> +++ b/foo
+	> @@ -1 +1 @@
+	> -foo
+	> +foo changed 3
+
+	$ readlink patches/test.diff~
+	$ echo %{?}
+	> 1
+
+	$ cat patches/test.diff~
+	> --- a/foo
+	> +++ b/foo
+	> @@ -1 +1 @@
+	> -foo
+	> +foo changed 2