feat: add more highlight groups

README.md

@@ -0,0 +1,6 @@
+# gruber-darker.nvim
+
+_A port of a [port][gruber-darker] of an [Emacs colorscheme][gruber-dark]_
+
+[gruber-darker]: https://github.com/rexim/gruber-darker
+[gruber-dark]: https://github.com

colors/GruberDarker.lua

@@ -0,0 +1,7 @@
+for k in pairs(package.loaded) do
+    if k:match(".*gruber-darker.*") then
+        package.loaded[k] = nil
+    end
+end
+
+require("gruber-darker").setup()

lua/gruber-darker/init.lua

@@ -1,7 +1,118 @@
+local c = require("gruber-darker.colors")
+
 local M = {}
 
-function M.hello()
-  print("Hello, Gruber!")
+-- Highlights {{{
+local highlights = {
+  Comment = { fg = c.default.brown },
+  Cursor = { fg = c.default.none, bg = c.default.yellow },
+  CursorLine = { fg = c.default.none, bg = c.default["bg+1"] },
+  lCursor = { fg = c.default.none, bg = c.default.yellow },
+  CursorIM = { fg = c.default.none, bg = c.default.yellow },
+  LineNr = { fg = c.default["bg+4"] },
+  CursorLineNr = { fg = c.default.yellow },
+  DiffAdd = { fg = c.default.green, bg = c.default.none }, -- diff mode: Added line |diff.txt|
+  -- DiffChange = { bg = c.diff.change }, -- diff mode: Changed line |diff.txt|
+  DiffDelete = { fg = c.default["red+1"], bg = c.default.none }, -- diff mode: Deleted line |diff.txt|
+  -- DiffText = { bg = c.diff.text }, -- diff mode: Changed text within a changed line |diff.txt|
+
+  -- These groups are not listed as default vim groups,
+  -- but they are defacto standard group names for syntax highlighting.
+  -- commented out groups should chain up to their "preferred" group by
+  -- default,
+  -- Uncomment and edit if you want more specific syntax highlighting.
+
+  Constant = { fg = c.default.quartz }, -- (preferred) any constant
+  String = { fg = c.default.green }, --   a string constant: "this is a string"
+  -- Character = { fg = c.green }, --  a character constant: 'c', '\n'
+  -- Number        = { }, --   a number constant: 234, 0xff
+  -- Boolean       = { }, --  a boolean constant: TRUE, false
+  -- Float         = { }, --    a floating point constant: 2.3e10
+
+  -- Identifier = { fg = c.magenta }, -- (preferred) any variable name
+  Function = { fg = c.default.niagara }, -- function name (also: methods for classes)
+
+  -- Statement = { fg = c.magenta }, -- (preferred) any statement
+  -- Conditional   = { }, --  if, then, else, endif, switch, etc.
+  -- Repeat        = { }, --   for, do, while, etc.
+  -- Label         = { }, --    case, default, etc.
+  -- Operator = { fg = c.blue5 }, -- "sizeof", "+", "*", etc.
+  Keyword = { fg = c.default.yellow, bold = true }, --  any other keyword
+  -- Exception     = { }, --  try, catch, throw
+
+  PreProc = { fg = c.default.quartz }, -- (preferred) generic Preprocessor
+  -- Include       = { }, --  preprocessor #include
+  -- Define        = { }, --   preprocessor #define
+  -- Macro         = { }, --    same as Define
+  -- PreCondit     = { }, --  preprocessor #if, #else, #endif, etc.
+
+  -- Type = { fg = c.blue1 }, -- (preferred) int, long, char, etc.
+  -- StorageClass  = { }, -- static, register, volatile, etc.
+  -- Structure     = { }, --  struct, union, enum, etc.
+  -- Typedef       = { }, --  A typedef
+
+  -- Special = { fg = c.blue1 }, -- (preferred) any special symbol
+  -- SpecialChar   = { }, --  special character in a constant
+  -- Tag           = { }, --    you can use CTRL-] on this
+  -- Delimiter     = { }, --  character that needs attention
+  -- SpecialComment= { }, -- special things inside a comment
+  -- Debug         = { }, --    debugging statements
+
+  Underlined = { underline = true }, -- (preferred) text that stands out, HTML links
+  Bold = { bold = true },
+  Italic = { italic = true },
+
+  -- ("Ignore", below, may be invisible...)
+  -- Ignore = { }, -- (preferred) left blank, hidden  |hl-Ignore|
+
+  -- Error = { fg = c.error }, -- (preferred) any erroneous construct
+  -- Todo = { bg = c.yellow, fg = c.bg }, -- (preferred) anything that needs extra attention; mostly the keywords TODO FIXME and XXX
+}
+-- }}}
+
+---Delete GruberDarker autocmds when the
+---theme changes to something else
+function M.on_color_scheme()
+	-- vim.api.nvim_del_autocmd("GruberDarker")
+	-- vim.api.nvim_del_augroup_by_name("GruberDarker")
+	vim.cmd([[autocmd! GruberDarker]])
+	vim.cmd([[augroup! GruberDarker]])
+end
+
+function M.setup()
+	if vim.g.colors_name then
+		vim.cmd.hi("clear")
+	end
+
+	vim.opt.termguicolors = true
+	vim.g.colors_name = "GruberDarker"
+
+	-- set highlights here...
+	for group, hl in pairs(highlights) do
+		vim.api.nvim_set_hl(0, group, hl)
+	end
+
+	local gruber_darker_group = vim.api.nvim_create_augroup("GruberDarker", { clear = true })
+	vim.api.nvim_create_autocmd("ColorSchemePre", {
+		group = gruber_darker_group,
+		pattern = "*",
+		callback = function()
+			require("gruber-darker").on_color_scheme()
+		end,
+	})
+	vim.api.nvim_create_autocmd("FileType", {
+		group = gruber_darker_group,
+		pattern = "qf,help",
+		callback = function()
+			vim.cmd.setlocal("winhighlight=Normal:NormalSB,SignColumn:SignColumnSB")
+		end,
+	})
+
+	-- vim.cmd([[augroup GruberDarker]])
+	-- vim.cmd([[  autocmd!]])
+	-- vim.cmd([[  autocmd ColorSchemePre * lua require("gruber-darker").on_color_scheme()]])
+	-- vim.cmd([[  autocmd FileType qf,help setlocal winhighlight=Normal:NormalSB,SignColumn:SignColumnSB]])
+	-- vim.cmd([[augroup end]])
 end
 
 return M