feat(eval/method): partially port v8.1.1953

Adds method call support for all functions in the patch, but it cannot
be fully ported due to missing tests for:

- index(): requires Blobs from v8.1.0735.
           Note that index() was already added as a method in v8.1.1803;
           this patch only adds a test.

- iconv(): requires v8.1.1136 for test_termcodes.vim.

Nvim deprecated inputdialog(), so it no longer has an eval.txt entry.

Keep the test for hlexists() commented-out, just like previously. (Nvim
always defines the Number group, so it always returns 1 instead)

Cannot include both changes to test_syn_attr.vim as Nvim doesn't support
":hi term=..."; however, both test the same ->hlID() syntax anyway.

src/nvim/testdir/test_breakindent.vim

@@ -418,8 +418,8 @@ endfunc
 func Test_breakindent11()
   " test strdisplaywidth()
   call s:test_windows('setl cpo-=n sbr=>> nu nuw=4 nolist briopt= ts=4')
-  let text=getline(2)
-  let width = strlen(text[1:])+indent(2)+strlen(&sbr)*3 " text wraps 3 times
+  let text = getline(2)
+  let width = strlen(text[1:]) + indent(2) + strlen(&sbr) * 3 " text wraps 3 times
   call assert_equal(width, strdisplaywidth(text))
   call s:close_windows('set sbr=')
 endfunc
@@ -431,7 +431,7 @@ func Test_breakindent11_vartabs()
   " test strdisplaywidth()
   call s:test_windows('setl cpo-=n sbr=>> nu nuw=4 nolist briopt= ts=4 vts=4')
   let text = getline(2)
-  let width = strlen(text[1:])+indent(2)+strlen(&sbr)*3 " text wraps 3 times
+  let width = strlen(text[1:]) + 2->indent() + strlen(&sbr) * 3 " text wraps 3 times
   call assert_equal(width, strdisplaywidth(text))
   call s:close_windows('set sbr= vts&')
 endfunc

src/nvim/testdir/test_functions.vim

@@ -1127,7 +1127,7 @@ endfunc
 
 func Test_hlexists()
   call assert_equal(0, hlexists('does_not_exist'))
-  " call assert_equal(0, hlexists('Number'))
+  " call assert_equal(0, 'Number'->hlexists())
   call assert_equal(0, highlight_exists('does_not_exist'))
   " call assert_equal(0, highlight_exists('Number'))
   syntax on
@@ -1160,7 +1160,7 @@ endfunc
 func Test_inputlist()
   call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>1\<cr>", 'tx')
   call assert_equal(1, c)
-  call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>2\<cr>", 'tx')
+  call feedkeys(":let c = ['Select color:', '1. red', '2. green', '3. blue']->inputlist()\<cr>2\<cr>", 'tx')
   call assert_equal(2, c)
   call feedkeys(":let c = inputlist(['Select color:', '1. red', '2. green', '3. blue'])\<cr>3\<cr>", 'tx')
   call assert_equal(3, c)
@@ -1413,7 +1413,7 @@ func Test_reg_executing_and_recording()
   let g:regs = []
   func TestFunc() abort
     let g:regs += [reg_executing()]
-    let g:typed = input('?')
+    let g:typed = '?'->input()
     let g:regs += [reg_executing()]
   endfunc
   call feedkeys("@qy\<CR>", 'xt')
@@ -1429,6 +1429,25 @@ func Test_reg_executing_and_recording()
   unlet s:reg_stat
 endfunc
 
+func Test_inputsecret()
+  map W :call TestFunc()<CR>
+  let @q = "W"
+  let g:typed1 = ''
+  let g:typed2 = ''
+  let g:regs = []
+  func TestFunc() abort
+    let g:typed1 = '?'->inputsecret()
+    let g:typed2 = inputsecret('password: ')
+  endfunc
+  call feedkeys("@qsomething\<CR>else\<CR>", 'xt')
+  call assert_equal("something", g:typed1)
+  call assert_equal("else", g:typed2)
+  delfunc TestFunc
+  unmap W
+  unlet g:typed1
+  unlet g:typed2
+endfunc
+
 func Test_getchar()
   call feedkeys('a', '')
   call assert_equal(char2nr('a'), getchar())

src/nvim/testdir/test_getcwd.vim

@@ -17,7 +17,7 @@ func GetCwdInfo(win, tab)
     let lflag = haslocaldir(a:win)
   else
     let dirname = fnamemodify(getcwd(a:win, a:tab), mod)
-    let lflag = haslocaldir(a:win, a:tab)
+    let lflag = a:win->haslocaldir(a:tab)
   endif
   return bufname . ' ' . dirname . ' ' . lflag
 endfunc

src/nvim/testdir/test_history.vim

@@ -13,7 +13,7 @@ function History_Tests(hist)
   call assert_equal(-1, histnr(a:hist))
   call assert_equal('', histget(a:hist))
 
-  call assert_true(histadd(a:hist, 'ls'))
+  call assert_true('ls'->histadd(a:hist))
   call assert_true(histadd(a:hist, 'buffers'))
   call assert_equal('buffers', histget(a:hist))
   call assert_equal('ls', histget(a:hist, -2))
@@ -22,14 +22,14 @@ function History_Tests(hist)
   call assert_equal('', histget(a:hist, -5))
   call assert_equal(2, histnr(a:hist))
   call assert_true(histdel(a:hist, 2))
-  call assert_false(histdel(a:hist, 7))
+  call assert_false(a:hist->histdel(7))
   call assert_equal(1, histnr(a:hist))
   call assert_equal('ls', histget(a:hist, -1))
 
   call assert_true(histadd(a:hist, 'buffers'))
   call assert_true(histadd(a:hist, 'ls'))
-  call assert_equal('ls', histget(a:hist, -1))
-  call assert_equal(4, histnr(a:hist))
+  call assert_equal('ls', a:hist->histget(-1))
+  call assert_equal(4, a:hist->histnr())
 
   let a=execute('history ' . a:hist)
   call assert_match("^\n      #  \\S* history\n      3  buffers\n>     4  ls$", a)

src/nvim/testdir/test_listdict.vim

@@ -573,7 +573,7 @@ func Test_lockvar_script_autoload()
   set rtp+=./sautest
   lockvar g:footest#x
   unlockvar g:footest#x
-  call assert_equal(-1, islocked('g:footest#x'))
+  call assert_equal(-1, 'g:footest#x'->islocked())
   call assert_equal(0, exists('g:footest#x'))
   call assert_equal(1, g:footest#x)
   let &rtp = old_rtp

src/nvim/testdir/test_syn_attr.vim

@@ -8,7 +8,7 @@ func Test_missing_attr()
   call assert_equal('1', synIDattr(hlID("Mine"), "inverse", 'cterm'))
   hi Mine cterm=standout gui=undercurl
   call assert_equal('1', synIDattr(hlID("Mine"), "standout", 'cterm'))
-  call assert_equal('1', synIDattr(hlID("Mine"), "undercurl", 'gui'))
+  call assert_equal('1', synIDattr("Mine"->hlID(), "undercurl", 'gui'))
   hi Mine gui=strikethrough
   call assert_equal('1', synIDattr(hlID("Mine"), "strikethrough", 'gui'))
   hi Mine cterm=NONE gui=NONE

src/nvim/testdir/test_true_false.vim

@@ -104,7 +104,7 @@ func Test_true_false_arg()
   call Try_arg_true_false('maparg("asdf", "i", %v%)', "", "asdff")
   call Try_arg_true_false('FilterMapArg(maparg("asdf", "i", 1, %v%))', "asdff", {'rhs': 'asdff'})
 
-  call Try_arg_true_false('hasmapto("asdf", "i", %v%)', 0, 1)
+  call Try_arg_true_false('"asdf"->hasmapto("i", %v%)', 0, 1)
 
   new colored
   call setline(1, '<here>')