nvim: fix indent highlighting

.config/nvim/lua/klowner/plugins/indent-blankline.lua

@@ -4,5 +4,6 @@ return {
 	main = "ibl",
 	opts = {
 		indent = { char = "┊" },
+		scope = { char = "│" },
 	},
 }

.config/nvim/lua/klowner/plugins/style.lua

@@ -1,6 +1,28 @@
+local function get_color(name, attr)
+		return vim.fn.synIDattr(vim.fn.synIDtrans(vim.fn.hlID(name)), attr):gsub('#','')
+end
+
+local function clamp(value)
+	return math.min(math.max(value, 0), 255)
+end
+
+local function brightness(color, amount)
+	local num = tonumber(color, 16)
+	local r = (math.floor(num / 0x10000)) + amount
+	local g = (math.floor(num / 0x100) % 0x100) + amount
+	local b = (math.floor(num % 0x100)) + amount
+	return string.format("#%x", clamp(r) * 0x10000 + clamp(g) * 0x100 + clamp(b))
+end
+
+local function add_tweaks()
+	-- always set IblIndent to a slightly brighter version of the background color
+	vim.cmd('hi IblIndent guifg=' .. brightness(get_color('Normal', 'bg'), 20))
+end
+
 return {
 	'AlphaTechnolog/pywal.nvim',
 	config = function ()
 		vim.cmd('colorscheme pywal')
+		add_tweaks()
 	end,
 }