How to use indexed colours with colour scheme

[dylan-hoefsloot]

I have been using the colour variable indexed as described in the documentation here

I have now defined a colour scheme and I am not sure how to continue to use indexed colours, whether that be as part of the colour scheme or seperately in the configuration.

Is this supported?

[wez]

The colors are used by applications emitting escape sequences around their output; there are quite a few documented in https://wezfurlong.org/wezterm/escape-sequences.html#graphic-rendition-sgr but the main ones are:

CSI 30 through CSI 37 set the foreground to index 0 through 7, respectively.
CSI 40 through CSI 47 set the background to index 0 through 7, respectively.

CSI 90 through CSI 97 set the foreground to index 8 through 15, respectively.
CSI 100 through CSI 107 set the background to index 8 through 15, respectively.

There are some extended sequences:

CSI 38 : 5 : INDEX m will set the foreground index to INDEX where INDEX is in the range 0-255
CSI 48 : 5 : INDEX m will set the background index to INDEX where INDEX is in the range 0-255

It is up to the applications that you use to emit these sequences in appropriate places.

In vim for example, you will typically configure a syntax highlighting scheme to use ctermfg and ctermbg and have those specify the palette indices, although with vim in particular, if termguicolors is set you can tell vim to use full RGB color specifiers in your color scheme rather than palette indices if you prefer.

[dylan-hoefsloot]

Sorry I dont think I phrased my question very well, I do know how the indexed colours are used by applications.

My question here is how do I set them in Wezterm if I am using a colour scheme.

I am able to set them and use them without a colour scheme by using the colors block but as soon as I use the color_scheme variable the indexed colours are no longer available.

[wez]

Oh the colors defined in the palette of your selected color_scheme take precedence over your colors configuration (this is noted in the Color Scheme docs.

You'll need to define your own copy of the color scheme you want to use with that extended palette. Take a look at:

https://wezfurlong.org/wezterm/config/appearance.html#defining-a-color-scheme-in-your-weztermlua
and
https://wezfurlong.org/wezterm/config/appearance.html#defining-a-color-scheme-in-a-separate-file

[dylan-hoefsloot]

Yep, I went that route and made my own color scheme, however I wasnt sure how to add the indexed colours to that colour scheme as I couldnt find an example of anyone doing that.

I tried to use an array/list named indexed but that broke the colour scheme

[wez]

I'd suggest something like this if you're using a TOML file for the color scheme:

[colors]
foreground = "#bbbbbb"
background = "#000000"
cursor_bg = "#bbbbbb"
cursor_border = "#bbbbbb"
cursor_fg = "#ffffff"
selection_bg = "#b5d5ff"
selection_fg = "#000000"

ansi = ["#000000","#bb0000","#00bb00","#bbbb00","#0000bb","#bb00bb","#00bbbb","#bbbbbb"]
brights = ["#555555","#ff5555","#55ff55","#ffff55","#5555ff","#ff55ff","#55ffff","#ffffff"]

[colors.indexed]
136 = "orange"

printf "\x1b[48;5;136mI am 136\x1b[0m"

[dylan-hoefsloot]

Awesome, thanks for bearing with me 😄