[vim/vim] using tmux breaks vim's colors and termguicolors (#3608)

[Vedant Roy]

I am using Ubuntu 18 LTS, with gnome-terminal.

Normally - set termguicolors does its job by generally enhancing the look of VIM. However, if I use tmux, then VIM looks off and "set termguicolors" completely breaks all highlighting.

Note - I'm not using a colorscheme, this just my terminal's color scheme.
Before termguicolors:

After termguicolors:

However, tmux breaks set termguicolors

Before termguicolors (tmux):

After termguicolors (tmux):

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[Vedant Roy]

Solution:

Add the following lines before "set termguicolors" into my .vimrc:

" This is only necessary if you use "set termguicolors". It ensures the last screenshot does not occur
let &t_8f = "<Esc>[38;2;%lu;%lu;%lum"
let &t_8b = "<Esc>[48;2;%lu;%lu;%lum"

" fixes glitch? in colors when using vim with tmux
set background=dark
set t_Co=256

[Vedant Roy]

Closed #3608.

[Akash Kumar Dutta]

With the latest tmux version next-3.3, I did not need to make any changes in vimrc (I kept termguicolors only enabled), but added the following in tmux, and it worked for me:

# tmux colors
set -g default-terminal "xterm-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

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[Bram Moolenaar]

> With the latest tmux version next-3.3, I did not need to make any changes in vimrc (I kept termguicolors only enabled), but added the following in tmux, and it worked for me:
> ```
> # tmux colors
> set -g default-terminal "xterm-256color"
> set -ag terminal-overrides ",xterm-256color:Tc"

> ```

Assuming this will work for most users, let me add this in the help,
where cterm colors are explained:

*tmux*
When using tmux you may want to use this in the tmux config: >

# tmux colors
set -g default-terminal "xterm-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

Let me know if something needs to be changed.

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[Maxim Kim]

пятница, 28 мая 2021 г. в 23:23:51 UTC+3, Bram Moolenaar:

*tmux*
When using tmux you may want to use this in the tmux config: >
# tmux colors
set -g default-terminal "xterm-256color"
set -ag terminal-overrides ",xterm-256color:Tc"

Let me know if something needs to be changed.

This works for me too (on debian):

set -g default-terminal "tmux-256color"

set -ag terminal-overrides ',*:RGB'

 

[Bram Moolenaar]

Maxim Kim wrote:

> > *tmux*
> > When using tmux you may want to use this in the tmux config: >
> > # tmux colors
> > set -g default-terminal "xterm-256color"
> > set -ag terminal-overrides ",xterm-256color:Tc"
> >
> > Let me know if something needs to be changed.
> >
> >
> >
> This works for me too (on debian):
>
> set -g default-terminal "tmux-256color"
> set -ag terminal-overrides ',*:RGB'

OK, so which one of the two should we recommend?

--
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I can tell by the pixels that we're wrong for each other. (xkcd)

[Maxim Kim]

суббота, 29 мая 2021 г. в 18:57:42 UTC+3, Bram Moolenaar:

Maxim Kim wrote:

> > *tmux*
> > When using tmux you may want to use this in the tmux config: >
> > # tmux colors
> > set -g default-terminal "xterm-256color"
> > set -ag terminal-overrides ",xterm-256color:Tc"
> >
> > Let me know if something needs to be changed.
> >
> >
> >
> This works for me too (on debian):
>
> set -g default-terminal "tmux-256color"
> set -ag terminal-overrides ',*:RGB'

OK, so which one of the two should we recommend?

 

I guess it depends on what terminfo is more common to be installed by default:

https://unix.stackexchange.com/questions/1045/getting-256-colors-to-work-in-tmux 

quote>

> The newest version of ncurses ships with a tmux-256color terminfo entry (the FAQ does mention this).
> As an example, a benefit of using tmux-256color over screen-256color is that italics is properly rendered (screen doesn't support italics).

> So if you are using tmux 2.6 or above, and have the latest ncurses package, the following will work as well:

> set -g default-terminal "tmux-256color"

Also for terminal overrides https://gist.github.com/bbqtd/a4ac060d6f6b9ea6fe3aabe735aa9d95#rgb-colors

[Maxim Kim]

OK, so which one of the two should we recommend?

And tmux faq: 

* https://github.com/tmux/tmux/wiki/FAQ#how-do-i-use-a-256-colour-terminal

* https://github.com/tmux/tmux/wiki/FAQ#how-do-i-use-rgb-colour

 

[Bram Moolenaar]

Thanks, I'll include those links.

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[norogoth]

@vedantroy life-changing oh my gosh. My vim looks so much nicer.

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