BREAKING CHANGE(performance): Improve nvim_set_hl

instead of using commas to separate styles in a highlights group please
use a Lua table instead. For example:

```lua
style = { "italic", "bold", "underlined" }
```

lua/catppuccin/core/integrations/bufferline.lua

@@ -14,7 +14,7 @@ function M.get(cp)
 		BufferLineFill = { bg = bg_highlight },
 		BufferLineBackcrust = { fg = cp.text, bg = inactive_bg }, -- others
 		BufferLineBufferVisible = { fg = cp.surface1, bg = inactive_bg },
-		BufferLineBufferSelected = { fg = cp.text, bg = cp.base, style = "bold,italic" }, -- current
+		BufferLineBufferSelected = { fg = cp.text, bg = cp.base, style = { "bold", "italic" } }, -- current
 		BufferLineTab = { fg = cp.surface1, bg = cp.base },
 		BufferLineTabSelected = { fg = cp.red, bg = cp.blue },
 		BufferLineTabClose = { fg = cp.red, bg = inactive_bg },

lua/catppuccin/core/integrations/hop.lua

@@ -2,9 +2,9 @@ local M = {}
 
 function M.get(cp)
 	return {
-		HopNextKey = { bg = cp.base, fg = cp.peach, style = "bold,underline" },
+		HopNextKey = { bg = cp.base, fg = cp.peach, style = { "bold", "underline" } },
 		HopNextKey1 = { bg = cp.base, fg = cp.blue, style = "bold" },
-		HopNextKey2 = { bg = cp.base, fg = cp.teal, style = "bold,italic" },
+		HopNextKey2 = { bg = cp.base, fg = cp.teal, style = { "bold", "italic" } },
 		HopUnmatched = { bg = cp.base, fg = cp.overlay0 },
 	}
 end

lua/catppuccin/core/integrations/mini.lua

@@ -17,7 +17,7 @@ function M.get(cp)
 
 		MiniJump = { fg = cp.overlay2, bg = cp.pink },
 
-		MiniJump2dSpot = { bg = cp.base, fg = cp.peach, style = "bold,underline" },
+		MiniJump2dSpot = { bg = cp.base, fg = cp.peach, style = { "bold", "underline" } },
 
 		MiniStarterCurrent = {},
 		MiniStarterFooter = { fg = cp.yellow, style = "italic" },
@@ -42,10 +42,10 @@ function M.get(cp)
 
 		MiniSurround = { bg = cp.pink, fg = cp.surface1 },
 
-		MiniTablineCurrent = { fg = cp.text, bg = cp.base, style = "bold,italic" },
+		MiniTablineCurrent = { fg = cp.text, bg = cp.base, style = { "bold", "italic" } },
 		MiniTablineFill = { bg = bg_highlight },
 		MiniTablineHidden = { fg = cp.text, bg = inactive_bg },
-		MiniTablineModifiedCurrent = { fg = cp.base, bg = cp.text, style = "bold,italic" },
+		MiniTablineModifiedCurrent = { fg = cp.base, bg = cp.text, style = { "bold", "italic" } },
 		MiniTablineModifiedHidden = { fg = inactive_bg, bg = cp.text },
 		MiniTablineModifiedVisible = { fg = cp.surface1, bg = cp.subtext1 },
 		MiniTablineTabpagesection = { fg = cp.surface1, bg = cp.base },

lua/catppuccin/core/integrations/treesitter.lua

@@ -80,7 +80,7 @@ function M.get(cp)
 		-- TSURI               = { };    -- Any URI like a link or email.
 		--
 		-- Markdown tresitter parser support
-		TSURI = { fg = cp.rosewater, style = "italic,underline" }, -- urls, links and emails
+		TSURI = { fg = cp.rosewater, style = { "italic", "underline" } }, -- urls, links and emails
 		TSLiteral = { fg = cp.teal, style = "italic" }, -- used for inline code in markdown and for doc in python (""")
 		TSTextReference = { fg = cp.lavender, style = "bold" }, -- references
 		TSTitle = { fg = cp.blue, style = "bold" }, -- titles like: # Example

lua/catppuccin/core/mapper.lua

@@ -34,7 +34,7 @@ local function get_base()
 		}, -- Screen-line at the cursor, when 'cursorline' is secp.  Low-priority if forecrust (ctermfg OR guifg) is not secp.
 		Directory = { fg = cp.blue }, -- directory names (and other special names in listings)
 		EndOfBuffer = { fg = cp.base }, -- filler lines (~) after the end of the buffer.  By default, this is highlighted like |hl-NonText|.
-		ErrorMsg = { fg = cp.red, style = "bold,italic" }, -- error messages on the command line
+		ErrorMsg = { fg = cp.red, style = { "bold", "italic" } }, -- error messages on the command line
 		VertSplit = { fg = cp.crust }, -- the column separating vertically split windows
 		Folded = { fg = cp.blue, bg = cp.surface1 }, -- line used for closed folds
 		FoldColumn = { bg = cp.base, fg = cp.overlay0 }, -- 'foldcolumn'

lua/catppuccin/utils/data.lua

@@ -8,13 +8,4 @@ function M.set_of(list)
     return set
 end
 
--- https://www.codegrepper.com/code-examples/lua/lua+split+string+on+comma
-function M.split(s, delimiter)
-    local result = {}
-    for match in (s..delimiter):gmatch("(.-)"..delimiter) do
-        table.insert(result, match)
-	end
-    return result
-end
-
 return M

lua/catppuccin/utils/util.lua

@@ -1,9 +1,6 @@
-local udata = require("catppuccin.utils.data")
-
 local g = vim.g
 local util = {}
 
-
 local has_nvim07 = vim.fn.has("nvim-0.7")
 
 function util.highlight(group, color)
@@ -15,8 +12,12 @@ function util.highlight(group, color)
 		else
 			if color.style then
 				if color.style ~= "NONE" then
-					for _, style in pairs(udata.split(color.style, ",")) do
+					if type(color.style) == "table" then
-						color[style] = true
+						for _, style in ipairs(color.style) do
+							color[style] = true
+						end
+					else
+						color[color.style] = true
 					end
 				end
 			end
@@ -26,6 +27,9 @@ function util.highlight(group, color)
 		end
 	else
 		-- Doc: :h highlight-gui
+		if color.style and type(color.style) == "table" then
+			color.style = table.concat(color.style, ",")
+		end
 		local style = color.style and "gui=" .. color.style or "gui=NONE"
 		local fg = color.fg and "guifg=" .. color.fg or "guifg=NONE"
 		local bg = color.bg and "guibg=" .. color.bg or "guibg=NONE"