vim-patch:7.4.1559

Problem:    Passing cookie to a callback is clumsy.
Solution:   Change function() to take arguments and return a partial.

https://github.com/vim/vim/commit/1735bc988c546cc962c5f94792815b4d7cb79710

1 files changed, 43 insertions, 0 deletions

diff --git a/src/nvim/testdir/test_partial.vim b/src/nvim/testdir/test_partial.vim
new file mode 100644
index 0000000000..061f839668
--- /dev/null
+++ b/src/nvim/testdir/test_partial.vim
@@ -0,0 +1,43 @@
+" Test binding arguments to a Funcref.
+
+func MyFunc(arg1, arg2, arg3)
+  return a:arg1 . '/' . a:arg2 . '/' . a:arg3
+endfunc
+
+func MySort(up, one, two)
+  if a:one == a:two
+    return 0
+  endif
+  if a:up
+    return a:one > a:two
+  endif
+  return a:one < a:two
+endfunc
+
+func Test_partial_args()
+  let Cb = function('MyFunc', ["foo", "bar"])
+  call assert_equal("foo/bar/xxx", Cb("xxx"))
+  call assert_equal("foo/bar/yyy", call(Cb, ["yyy"]))
+
+  let Sort = function('MySort', [1])
+  call assert_equal([1, 2, 3], sort([3, 1, 2], Sort))
+  let Sort = function('MySort', [0])
+  call assert_equal([3, 2, 1], sort([3, 1, 2], Sort))
+endfunc
+
+func MyDictFunc(arg1, arg2) dict
+  return self.name . '/' . a:arg1 . '/' . a:arg2
+endfunc
+
+func Test_partial_dict()
+  let dict = {'name': 'hello'}
+  let Cb = function('MyDictFunc', ["foo", "bar"], dict)
+  call assert_equal("hello/foo/bar", Cb())
+  call assert_fails('Cb("xxx")', 'E492:')
+  let Cb = function('MyDictFunc', ["foo"], dict)
+  call assert_equal("hello/foo/xxx", Cb("xxx"))
+  call assert_fails('Cb()', 'E492:')
+  let Cb = function('MyDictFunc', dict)
+  call assert_equal("hello/xxx/yyy", Cb("xxx", "yyy"))
+  call assert_fails('Cb()', 'E492:')
+endfunc