nvim: colors: Minor clean up

The call to highlight_terminal was redundant since we were passing
just {}. Also remove cterm related settings. Upstream has diverged
significantly, so we need not care about upstream any more.

nvim/.config/nvim/colors/yolokai.vim

@@ -706,13 +706,9 @@ local highlight_groups = {
   MiniJump2dSpotAhead  = { fg = white, style={ 'nocombine'              }},
 }
 
--- We do not care about terminals which do not support 256 colors
-local terminal_ansi_colors = { }
-
 require('yolokai')(
   highlight_group_normal,
-  highlight_groups,
+  highlight_groups
-  terminal_ansi_colors
 )
 
 EOF

nvim/.config/nvim/lua/yolokai.lua

@@ -1,5 +1,3 @@
---[[ NOTHING INSIDE THIS FILE NEEDS TO BE EDITED BY THE USER. ]]
-
 --- @class Yolokai.Definition
 --- @field bg? string|table the background color
 --- @field blend? number the transparency value
@@ -13,12 +11,6 @@
 
 --[[/* Vars */]]
 
---- Which set of colors to use.
-local _USE_256 = tonumber(vim.go.t_Co) > 255 or string.find(vim.env.TERM, '256')
-
---- Which index to use for `cterm` highlights.
-local _PALETTE_CTERM = _USE_256 and 2 or 3
-
 --- Which index to use for `gui` highlights.
 local _PALETTE_HEX  = 1
 
@@ -104,9 +96,6 @@ function yolokai.highlight(group_name, definition) -- {{{ †
 		highlight.bg = get(definition.bg, _PALETTE_HEX)
 		highlight.fg = get(definition.fg, _PALETTE_HEX)
 
-		highlight.ctermbg = get(definition.bg, _PALETTE_CTERM)
-		highlight.ctermfg = get(definition.fg, _PALETTE_CTERM)
-
 		highlight.blend = definition.blend
 
 		local style = definition.style
@@ -126,15 +115,7 @@ function yolokai.highlight(group_name, definition) -- {{{ †
 	vim.api.nvim_set_hl(0, group_name, highlight)
 end --}}} ‡
 
---- Set `g:terminal_color_`s based on `terminal_colors`.
+return setmetatable(yolokai, {__call = function(self, normal, highlights)
---- @param terminal_colors table a list 1..16 of colors to use in the terminal
-function yolokai:highlight_terminal(terminal_colors)
-	for index, color in ipairs(terminal_colors) do vim.g['terminal_color_'..(index-1)] =
-		vim.go.termguicolors and color[_PALETTE_HEX] or color[_PALETTE_CTERM]
-	end
-end
-
-return setmetatable(yolokai, {__call = function(self, normal, highlights, terminal_colors)
 	--- resolve highlight groups being defined by function calls.
 	--- @param tbl table the current table being indexed.
 	--- @param key string the key to resolve the value for.
@@ -165,9 +146,6 @@ return setmetatable(yolokai, {__call = function(self, normal, highlights, termin
 	-- replace the colors_name
 	vim.g.colors_name = color_name
 
-	-- If we aren't using hex nor 256 colorsets.
-	if not (vim.go.termguicolors or _USE_256) then vim.go.t_Co = '16' end
-
 	-- Highlight the baseline.
 	self.highlight('Normal', normal)
 
@@ -175,7 +153,4 @@ return setmetatable(yolokai, {__call = function(self, normal, highlights, termin
 	for group_name, _ in pairs(highlights) do
 		self.highlight(group_name, resolve(highlights, group_name, false))
 	end
-
-	-- Set the terminal highlight colors.
-	self:highlight_terminal(terminal_colors)
 end})