Add experimental.ghost_text.hl_group

lua/cmp/core.lua

@@ -36,7 +36,8 @@ core.menu = menu.new({
 core.ghost_text = function(e)
   vim.api.nvim_buf_clear_namespace(0, core.GHOST_TEXT_NS, 0, -1)
 
-  if not config.get().experimental.ghost_text then
+  local c = config.get().experimental.ghost_text
+  if not c then
     return
   end
 
@@ -58,7 +59,7 @@ core.ghost_text = function(e)
   if #text > 0 then
     vim.api.nvim_buf_set_extmark(ctx.bufnr, core.GHOST_TEXT_NS, ctx.cursor.row - 1, ctx.cursor.col - 1, {
       right_gravity = false,
-      virt_text = { { text, 'Comment' } },
+      virt_text = { { text, c.hl_group } },
       virt_text_pos = 'overlay',
       virt_text_win_col = ctx.virtcol - 1,
       priority = 1,

lua/cmp/types/cmp.lua

@@ -49,7 +49,7 @@ cmp.PreselectMode.None = 'none'
 ---@field private revision number
 ---@field public preselect cmp.PreselectMode
 ---@field public completion cmp.CompletionConfig
----@field public documentation cmp.DocumentationConfig
+---@field public documentation cmp.DocumentationConfig|"false"
 ---@field public confirmation cmp.ConfirmationConfig
 ---@field public sorting cmp.SortingConfig
 ---@field public formatting cmp.FormattingConfig
@@ -91,7 +91,10 @@ cmp.PreselectMode.None = 'none'
 ---@field on_confirm_done function(e: cmp.Entry)
 
 ---@class cmp.ExperimentalConfig
----@field public ghost_text boolean
+---@field public ghost_text cmp.GhostTextConfig|"false"
+
+---@class cmp.GhostTextConfig
+---@field hl_group string
 
 ---@class cmp.SourceConfig
 ---@field public name string