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.

1 files changed, 3 insertions, 3 deletions

diff --git a/src/nvim/testdir/test_breakindent.vim b/src/nvim/testdir/test_breakindent.vim
index 97b570e64f..277050876e 100644
--- a/src/nvim/testdir/test_breakindent.vim
+++ b/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