vim-patch:8.1.{1915,1921,1953} (#19900)

vim-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.
1a3a89168d

Move debugbreak() to the right place.

vim-patch:8.1.1921: more functions can be used as methods

Problem:    More functions can be used as methods.
Solution:   Make various functions usable as a method.
a4208966fb

vim-patch:8.1.1953: more functions can be used as a method

Problem:    More functions can be used as a method.
Solution:   Allow more functions to be used as a method.
f9f24ce7a0

Omit test_termcodes.vim: cannot be used and superseded by later patches.
Cherry-pick test_bufline.vim change from patch 8.1.1993.

src/nvim/testdir/test_blob.vim

@@ -294,7 +294,7 @@ func Test_blob_index()
   call assert_equal(2, index(0zDEADBEEF, 0xBE))
   call assert_equal(-1, index(0zDEADBEEF, 0))
   call assert_equal(2, index(0z11111111, 0x11, 2))
-  call assert_equal(3, index(0z11110111, 0x11, 2))
+  call assert_equal(3, 0z11110111->index(0x11, 2))
   call assert_equal(2, index(0z11111111, 0x11, -2))
   call assert_equal(3, index(0z11110111, 0x11, -2))
 

src/nvim/testdir/test_bufline.vim

@@ -19,7 +19,7 @@ func Test_setbufline_getbufline()
   let b = bufnr('%')
   wincmd w
   call assert_equal(1, setbufline(b, 5, ['x']))
-  call assert_equal(1, setbufline(bufnr('$') + 1, 1, ['x']))
+  call assert_equal(1, ['x']->setbufline(bufnr('$') + 1, 1))
   call assert_equal(0, setbufline(b, 4, ['d', 'e']))
   call assert_equal(['c'], b->getbufline(3))
   call assert_equal(['d'], getbufline(b, 4))

src/nvim/testdir/test_cd.vim

@@ -113,7 +113,7 @@ func Test_chdir_func()
   call assert_equal('z', fnamemodify(3->getcwd(2), ':t'))
   tabnext | wincmd t
   call assert_match('^\[tabpage\] .*/y$', trim(execute('verbose pwd')))
-  call chdir('..')
+  eval '..'->chdir()
   call assert_equal('Xdir', fnamemodify(getcwd(1, 2), ':t'))
   call assert_equal('Xdir', fnamemodify(getcwd(2, 2), ':t'))
   call assert_equal('z', fnamemodify(getcwd(3, 2), ':t'))

src/nvim/testdir/test_cursor_func.vim

@@ -22,7 +22,7 @@ func Test_move_cursor()
   call cursor(3, 0)
   call assert_equal([3, 1, 0, 1], getcurpos()[1:])
   " below last line goes to last line
-  call cursor(9, 1)
+  eval [9, 1]->cursor()
   call assert_equal([4, 1, 0, 1], getcurpos()[1:])
   " pass string arguments
   call cursor('3', '3')

src/nvim/testdir/test_diffmode.vim

@@ -744,17 +744,13 @@ func Test_diff_hlID()
 
   call diff_hlID(-1, 1)->synIDattr("name")->assert_equal("")
 
-  call assert_equal(diff_hlID(1, 1), hlID("DiffChange"))
   call diff_hlID(1, 1)->synIDattr("name")->assert_equal("DiffChange")
-  call assert_equal(diff_hlID(1, 2), hlID("DiffText"))
   call diff_hlID(1, 2)->synIDattr("name")->assert_equal("DiffText")
   call diff_hlID(2, 1)->synIDattr("name")->assert_equal("")
-  call assert_equal(diff_hlID(3, 1), hlID("DiffAdd"))
   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(diff_hlID(1, 1), hlID("DiffChange"))
   call assert_equal(synIDattr(diff_hlID(1, 1), "name"), "DiffChange")
   call assert_equal(synIDattr(diff_hlID(2, 1), "name"), "")
   call assert_equal(synIDattr(diff_hlID(3, 1), "name"), "")

src/nvim/testdir/test_functions.vim

@@ -1713,7 +1713,7 @@ func Test_confirm()
   call assert_equal(1, a)
 
   call feedkeys('y', 'L')
-  let a = confirm('Are you sure?', "&Yes\n&No")
+  let a = 'Are you sure?'->confirm("&Yes\n&No")
   call assert_equal(1, a)
 
   call feedkeys('n', 'L')
@@ -1727,7 +1727,7 @@ func Test_confirm()
 
   " <Esc> requires another character to avoid it being seen as the start of an
   " escape sequence.  Zero should be harmless.
-  call feedkeys("\<Esc>0", 'L')
+  eval "\<Esc>0"->feedkeys('L')
   let a = confirm('Are you sure?', "&Yes\n&No")
   call assert_equal(0, a)
 
@@ -1784,7 +1784,7 @@ func Test_readdir()
   let files = readdir('Xdir', {x -> len(add(l, x)) == 2 ? -1 : 1})
   call assert_equal(1, len(files))
 
-  call delete('Xdir', 'rf')
+  eval 'Xdir'->delete('rf')
 endfunc
 
 func Test_delete_rf()
@@ -1827,6 +1827,7 @@ endfunc
 
 func Test_char2nr()
   call assert_equal(12354, char2nr('あ', 1))
+  call assert_equal(120, 'x'->char2nr())
 endfunc
 
 func Test_charclass()