refactor: extract truncate logic

Co-authored-by: Micah Halter <[email protected]>

Author: azdanov

src/content/docs/recipes/cmp.mdx

@@ -153,22 +153,20 @@ return {
   "hrsh7th/nvim-cmp",
   opts = function(_, opts)
     local astrocore, astroui = require "astrocore", require "astroui"
+    local function truncate(str, len)
+      if not str then return end
+      local truncated = vim.fn.strcharpart(str, 0, len)
+      return truncated == str and str or truncated .. astroui.get_icon "Ellipsis"
+    end
+
     if not opts.formatting then opts.formatting = {} end
     opts.formatting.format = astrocore.patch_func(opts.formatting.format, function(format, ...)
       -- get item from original formatting function
       local vim_item = format(...)
 
-      -- truncate label to maximum of 25% of the window
-      local label = vim_item.abbr
-      local truncated_label = vim.fn.strcharpart(label, 0, math.floor(0.25 * vim.o.columns))
-      if truncated_label ~= label then vim_item.abbr = truncated_label .. astroui.get_icon "Ellipsis" end
-
-      -- truncate menu to maximum of 25% of the window
-      if vim_item.menu then
-        local menu = vim_item.menu
-        local truncated_menu = vim.fn.strcharpart(menu, 0, math.floor(0.25 * vim.o.columns))
-        if truncated_menu ~= menu then vim_item.menu = truncated_menu .. astroui.get_icon "Ellipsis" end
-      end
+      -- truncate text fields to maximum of 25% of the window
+      vim_item.abbr = truncate(vim_item.abbr, math.floor(0.25 * vim.o.columns))
+      vim_item.menu = truncate(vim_item.menu, math.floor(0.25 * vim.o.columns))
 
       return vim_item
     end)