patch 7.4.1107
Problem: Vim can create a directory but not delete it.
Solution: Add an argument to delete() to make it possible to delete a
directory, also recursively.
diff --git a/src/testdir/test_delete.vim b/src/testdir/test_delete.vim
new file mode 100644
index 0000000..6e2b9c8
--- /dev/null
+++ b/src/testdir/test_delete.vim
@@ -0,0 +1,36 @@
+" Test for delete().
+
+func Test_file_delete()
+ split Xfile
+ call setline(1, ['a', 'b'])
+ wq
+ call assert_equal(['a', 'b'], readfile('Xfile'))
+ call assert_equal(0, delete('Xfile'))
+ call assert_fails('call readfile("Xfile")', 'E484:')
+ call assert_equal(-1, delete('Xfile'))
+endfunc
+
+func Test_dir_delete()
+ call mkdir('Xdir1')
+ call assert_true(isdirectory('Xdir1'))
+ call assert_equal(0, delete('Xdir1', 'd'))
+ call assert_false(isdirectory('Xdir1'))
+ call assert_equal(-1, delete('Xdir1', 'd'))
+endfunc
+
+func Test_recursive_delete()
+ call mkdir('Xdir1')
+ call mkdir('Xdir1/subdir')
+ split Xdir1/Xfile
+ call setline(1, ['a', 'b'])
+ w
+ w Xdir1/subdir/Xfile
+ close
+ call assert_true(isdirectory('Xdir1'))
+ call assert_equal(['a', 'b'], readfile('Xdir1/Xfile'))
+ call assert_true(isdirectory('Xdir1/subdir'))
+ call assert_equal(['a', 'b'], readfile('Xdir1/subdir/Xfile'))
+ call assert_equal(0, delete('Xdir1', 'rf'))
+ call assert_false(isdirectory('Xdir1'))
+ call assert_equal(-1, delete('Xdir1', 'd'))
+endfunc