How to deal with accented latin characters on neovim

Question

I'm trying to find out how to configure neovim in order to edit texts with accented latin characters. I usually set ambiwidth to double so Jananese symbols are displayed properly, but then neovim treats accented latin characters also as double-width. When, on the other hand, I set ambiwidth to single, the entire text gets completely disfigured, with parts of text not even displayed. Perhaps, I'm missing something?

Incidentally, I happened to notice everything is fine with vim 8.1 when ambiwidth is set to single.

I'm using the latest neovim (v0.3.1-dev) with xfce4-terminal (0.6.3) on an Ubuntu-based system (14.04).

(Solved)

I was not familiar with different sorts of terminals, but the problem resolved itself when I switched xfce4-terminal for rxvt-unicode. Now accented latin characters are displayed properly as single-width when I set ambiwidth to single.

Answer 1

At last, I guess I managed to figure out what was really at the bottom of the problem.

Older xfce4-termnal determines how to deal with ambiguous-width characters depending on the value of environment variable VTE_CJK_WIDTH (I usually set VTE_CJK_WIDTH=1), while recent xfce4-terminal has a specific setting that affects ambiguous-width characters. When I set either of these appropriately (i.e. VTE_CJK_WIDTH to 0 or 'ambiguous-width characters' to 'narrow') and also set ambiwidth to single with neovim, then everything goes well and neovim treats accented latin characters as single-width.

As far as I understand, rxvt-unicode cannot properly deal with ambiguous-width characters and always treats these characters as single-width. So this may not be a proper solution to the problem.