Inconsistent result of popup window between Vim and Neovim

[lambdalisue]

Describe the bug

It seems popup.open place floating window on Neovim in wrong place.

It seems Vim's col/row starts from 1 but Neovim starts from 0. We should consider the col/row starts from 1 in both case (I'm not sure. We need to make sure this before fix.)

Provide a minimal vimrc with less than 50 lines to reproduce

set nonumber
set signcolumn=no

" Optional
set showtabline=0

call denops#request('whateverdenopsplugin', 'popup', [])

import type { Entrypoint } from "jsr:@denops/std@^7.0.0";
import * as popup from "jsr:@denops/std@^7.0.0/popup";

export const main: Entrypoint = (denops) => {
  denops.dispatcher = {
    async popup() {
      await popup.open(denops, {
        relative: "editor",
        width: 3,
        height: 3,
        col: 5,
        row: 5,
        highlight: {
          normal: "IncSearch",
        },
      });

      await popup.open(denops, {
        relative: "editor",
        width: 3,
        height: 3,
        col: 10,
        row: 5,
        border: "single",
        highlight: {
          normal: "IncSearch",
        },
      });
    },
  };
};

How to reproduce the problem from Vim startup

:source test.vim

Expected behavior

Both Vim and Neovim place window in same location.

Actual behavior

It seems Neovim put floating window in invalid location.

Screenshots (if need)

Your environment

• OS: uname -a (macOS/Linux) or ver (Windows)
• Deno version: deno --version
• Vim/Neovim version: vim --version or nvim --version
• Denops version: git log -1 (run in the denops.vim repository)

Additional context

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