patch 8.1.1915: 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_diffmode.vim b/src/testdir/test_diffmode.vim
index 027cdc8..bbdbfb8 100644
--- a/src/testdir/test_diffmode.vim
+++ b/src/testdir/test_diffmode.vim
@@ -674,7 +674,7 @@
call diff_hlID(1, 2)->synIDattr("name")->assert_equal("DiffText")
call diff_hlID(2, 1)->synIDattr("name")->assert_equal("")
call diff_hlID(3, 1)->synIDattr("name")->assert_equal("DiffAdd")
- call diff_hlID(4, 1)->synIDattr("name")->assert_equal("")
+ eval 4->diff_hlID(1)->synIDattr("name")->assert_equal("")
wincmd w
call assert_equal(synIDattr(diff_hlID(1, 1), "name"), "DiffChange")
@@ -693,7 +693,7 @@
diffthis
redraw
- call assert_equal([0, 0, 0, 0, 0, 0, 0, 1, 0], map(range(-1, 7), 'diff_filler(v:val)'))
+ call assert_equal([0, 0, 0, 0, 0, 0, 0, 1, 0], map(range(-1, 7), 'v:val->diff_filler()'))
wincmd w
call assert_equal([0, 0, 0, 0, 2, 0, 0, 0], map(range(-1, 6), 'diff_filler(v:val)'))