patch 8.1.1925: more functions can be used as methods
Problem: More functions can be used as methods.
Solution: Make various functions usable as a method.
diff --git a/src/testdir/test_bufline.vim b/src/testdir/test_bufline.vim
index 183a186..50f7275 100644
--- a/src/testdir/test_bufline.vim
+++ b/src/testdir/test_bufline.vim
@@ -22,7 +22,7 @@
call assert_equal(1, setbufline(b, 5, ['x']))
call assert_equal(1, setbufline(bufnr('$') + 1, 1, ['x']))
call assert_equal(0, setbufline(b, 4, ['d', 'e']))
- call assert_equal(['c'], getbufline(b, 3))
+ call assert_equal(['c'], b->getbufline(3))
call assert_equal(['d'], getbufline(b, 4))
call assert_equal(['e'], getbufline(b, 5))
call assert_equal([], getbufline(b, 6))