How to customize tmux pane separator

Question

I'm customizing my tmux setup to match Neovim's appearance, specifically the vertical pane separator used in vsplits (|).

In Neovim, I use this configuration for the separator:

vim.opt.fillchars = {
    vert = "|",  -- Simple vertical line
}

In tmux, I have tried setting pane border styles like this:

set -g pane-border-style 'fg=#232629,bg=default'
set -g pane-active-border-style 'fg=magenta,bg=default'

However, tmux still uses a continuous line as the separator, not a simple | like in Neovim.

How can I customize tmux to show a separator that matches Neovim's vsplit (|), without the continuous line?

What I tried:

• I adjusted the pane-border-style and pane-active-border-style settings to customize the separator.
• I attempted to use different separator characters (e.g., │), but tmux still shows a continuous line instead of a simple |.

What I experienced:

• The separator in tmux still appears as a continuous line rather than the simple | separator like in Neovim.

here is tmux separator

here my nvim separator

Answer 1

i solved that by: set -g pane-border-lines simple