vim-patch:8.1.1809: more functions can be used as a method

Problem:    More functions can be used as a method.
Solution:   Add has_key(), split(), str2list(), etc.
https://github.com/vim/vim/commit/a74e4946de074d2916e3d6004f7fa1810d12dda9

5 files changed, 32 insertions, 21 deletions

diff --git a/src/nvim/eval.lua b/src/nvim/eval.lua
index 506368a3b2..50b6eaadfd 100644
--- a/src/nvim/eval.lua
+++ b/src/nvim/eval.lua
@@ -180,7 +180,7 @@ return {
     glob2regpat={args=1},
     globpath={args={2, 5}},
     has={args=1},
-    has_key={args=2},
+    has_key={args=2, base=1},
     haslocaldir={args={0,2}},
     hasmapto={args={1, 3}},
     highlightID={args=1, func='f_hlID'},  -- obsolete
@@ -339,11 +339,11 @@ return {
     stdioopen={args=1},
     spellbadword={args={0, 1}},
     spellsuggest={args={1, 3}},
-    split={args={1, 3}},
+    split={args={1, 3}, base=1},
     sqrt={args=1, func="float_op_wrapper", data="&sqrt"},
     stdpath={args=1},
     str2float={args=1},
-    str2list={args={1, 2}},
+    str2list={args={1, 2}, base=1},
     str2nr={args={1, 2}},
     strcharpart={args={2, 3}},
     strchars={args={1,2}},
@@ -352,23 +352,23 @@ return {
     strgetchar={args={2, 2}},
     stridx={args={2, 3}},
     string={args=1, base=1},
-    strlen={args=1},
+    strlen={args=1, base=1},
     strpart={args={2, 4}},
     strptime={args=2},
     strridx={args={2, 3}},
-    strtrans={args=1},
-    strwidth={args=1},
+    strtrans={args=1, base=1},
+    strwidth={args=1, base=1},
     submatch={args={1, 2}},
-    substitute={args=4},
+    substitute={args=4, base=1},
     swapinfo={args={1}},
     swapname={args={1}},
     synID={args=3},
-    synIDattr={args={2, 3}},
-    synIDtrans={args=1},
+    synIDattr={args={2, 3}, base=1},
+    synIDtrans={args=1, base=1},
     synconcealed={args=2},
     synstack={args=2},
-    system={args={1, 2}},
-    systemlist={args={1, 3}},
+    system={args={1, 2}, base=1},
+    systemlist={args={1, 3}, base=1},
     tabpagebuflist={args={0, 1}},
     tabpagenr={args={0, 1}},
     tabpagewinnr={args={1, 2}},
diff --git a/src/nvim/testdir/test_diffmode.vim b/src/nvim/testdir/test_diffmode.vim
index 8592f48af7..1552bc4f78 100644
--- a/src/nvim/testdir/test_diffmode.vim
+++ b/src/nvim/testdir/test_diffmode.vim
@@ -741,16 +741,16 @@ func Test_diff_hlID()
   diffthis
   redraw
 
-  call assert_equal(synIDattr(diff_hlID(-1, 1), "name"), "")
+  call diff_hlID(-1, 1)->synIDattr("name")->assert_equal("")
 
   call assert_equal(diff_hlID(1, 1), hlID("DiffChange"))
-  call assert_equal(synIDattr(diff_hlID(1, 1), "name"), "DiffChange")
+  call diff_hlID(1, 1)->synIDattr("name")->assert_equal("DiffChange")
   call assert_equal(diff_hlID(1, 2), hlID("DiffText"))
-  call assert_equal(synIDattr(diff_hlID(1, 2), "name"), "DiffText")
-  call assert_equal(synIDattr(diff_hlID(2, 1), "name"), "")
+  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 assert_equal(synIDattr(diff_hlID(3, 1), "name"), "DiffAdd")
-  call assert_equal(synIDattr(diff_hlID(4, 1), "name"), "")
+  call diff_hlID(3, 1)->synIDattr("name")->assert_equal("DiffAdd")
+  call diff_hlID(4, 1)->synIDattr("name")->assert_equal("")
 
   wincmd w
   call assert_equal(diff_hlID(1, 1), hlID("DiffChange"))
diff --git a/src/nvim/testdir/test_method.vim b/src/nvim/testdir/test_method.vim
index 43ed830aba..ef87773924 100644
--- a/src/nvim/testdir/test_method.vim
+++ b/src/nvim/testdir/test_method.vim
@@ -49,6 +49,7 @@ func Test_dict()
   " call assert_fails("let x = d->insert(0)", 'E899:')
   call assert_fails("let x = d->index(2)", 'E714:')
   call assert_fails("let x = d->insert(0)", 'E686:')
+  call assert_true(d->has_key('two'))
   call assert_equal([['one', 1], ['two', 2], ['three', 3]], d->items())
   call assert_fails("let x = d->join()", 'E714:')
   call assert_equal(['one', 'two', 'three'], d->keys())
@@ -70,6 +71,16 @@ func Test_dict()
   call assert_equal([1, 2, 3], d->values())
 endfunc
 
+func Test_string()
+  call assert_equal(['1', '2', '3'], '1 2 3'->split())
+  call assert_equal([1, 2, 3], '1 2 3'->split()->map({i, v -> str2nr(v)}))
+  call assert_equal([65, 66, 67], 'ABC'->str2list())
+  call assert_equal(3, 'ABC'->strlen())
+  call assert_equal('a^Mb^[c', "a\rb\ec"->strtrans())
+  call assert_equal(4, "aあb"->strwidth())
+  call assert_equal('axc', 'abc'->substitute('b', 'x', ''))
+endfunc
+
 func Test_append()
   new
   eval ['one', 'two', 'three']->append(1)
diff --git a/src/nvim/testdir/test_syntax.vim b/src/nvim/testdir/test_syntax.vim
index 875e23894f..2344bac498 100644
--- a/src/nvim/testdir/test_syntax.vim
+++ b/src/nvim/testdir/test_syntax.vim
@@ -546,8 +546,8 @@ func Test_synstack_synIDtrans()
   call assert_equal([], synstack(1, 1))
 
   norm f/
-  call assert_equal(['cComment', 'cCommentStart'], map(synstack(line("."), col(".")), 'synIDattr(v:val, "name")'))
-  call assert_equal(['Comment', 'Comment'],	   map(synstack(line("."), col(".")), 'synIDattr(synIDtrans(v:val), "name")'))
+  eval synstack(line("."), col("."))->map('synIDattr(v:val, "name")')->assert_equal(['cComment', 'cCommentStart'])
+  eval synstack(line("."), col("."))->map('synIDattr(synIDtrans(v:val), "name")')->assert_equal(['Comment', 'Comment'])
 
   norm fA
   call assert_equal(['cComment'], map(synstack(line("."), col(".")), 'synIDattr(v:val, "name")'))
diff --git a/src/nvim/testdir/test_system.vim b/src/nvim/testdir/test_system.vim
index 6bbe714d19..7b8ee778cc 100644
--- a/src/nvim/testdir/test_system.vim
+++ b/src/nvim/testdir/test_system.vim
@@ -7,10 +7,10 @@ func Test_System()
   if !executable('echo') || !executable('cat') || !executable('wc')
     return
   endif
-  let out = system('echo 123')
+  let out = 'echo 123'->system()
   call assert_equal("123\n", out)
 
-  let out = systemlist('echo 123')
+  let out = 'echo 123'->systemlist()
   if &shell =~# 'cmd.exe$'
     call assert_equal(["123\r"], out)
   else