adds emphasis option (#272)

* adds emphasis option

* add testing for emphasis option

---------

Co-authored-by: Alex Koch <[email protected]>

README.md

@@ -59,6 +59,7 @@ require("gruvbox").setup({
  bold = true,
  italic = {
  strings = true,
+ emphasis = true,
  comments = true,
  operators = false,
  folds = true,

lua/gruvbox/groups.lua

@@ -341,7 +341,7 @@ M.setup = function(config)
  -- @text.strong ; bold text
  ["@text.strong"] = { bold = config.bold },
  -- @text.emphasis ; text with emphasis
- ["@text.emphasis"] = { italic = config.italic.strings },
+ ["@text.emphasis"] = { italic = config.italic.emphasis },
  -- @text.underline ; underlined text
  ["@text.underline"] = { underline = config.underline },
  -- @text.strike ; strikethrough text

lua/gruvbox/init.lua

@@ -11,41 +11,42 @@ local Gruvbox = {}
 ---@field folds boolean
 
 ---@class HighlightDefinition
----@field fg string
----@field bg string
----@field sp string
----@field blend integer
----@field bold boolean
----@field standout boolean
----@field underline boolean
----@field undercurl boolean
----@field underdouble boolean
----@field underdotted boolean
----@field strikethrough boolean
----@field italic boolean
----@field reverse boolean
----@field nocombine boolean
+---@field fg string?
+---@field bg string?
+---@field sp string?
+---@field blend integer?
+---@field bold boolean?
+---@field standout boolean?
+---@field underline boolean?
+---@field undercurl boolean?
+---@field underdouble boolean?
+---@field underdotted boolean?
+---@field strikethrough boolean?
+---@field italic boolean?
+---@field reverse boolean?
+---@field nocombine boolean?
 
 ---@class GruvboxConfig
----@field undercurl boolean
----@field underline boolean
----@field bold boolean
----@field italic ItalicConfig
----@field strikethrough boolean
----@field contrast Contrast
----@field invert_selection boolean
----@field invert_signs boolean
----@field invert_tabline boolean
----@field invert_intend_guides boolean
----@field inverse boolean invert background for search, diffs, statuslines and errors
----@field overrides table<string, HighlightDefinition>
----@field palette_overrides table<string, string>
+---@field undercurl boolean?
+---@field underline boolean?
+---@field bold boolean?
+---@field italic ItalicConfig?
+---@field strikethrough boolean?
+---@field contrast Contrast?
+---@field invert_selection boolean?
+---@field invert_signs boolean?
+---@field invert_tabline boolean?
+---@field invert_intend_guides boolean?
+---@field inverse boolean?
+---@field overrides table<string, HighlightDefinition>?
+---@field palette_overrides table<string, string>?
 Gruvbox.config = {
  undercurl = true,
  underline = true,
  bold = true,
  italic = {
  strings = true,
+ emphasis = true,
  comments = true,
  operators = false,
  folds = true,

tests/gruvbox/gruvbox_spec.lua

@@ -15,6 +15,7 @@ describe("setup", function()
  bold = true,
  italic = {
  strings = true,
+ emphasis = true,
  comments = true,
  operators = false,
  folds = true,