feat(ui): fancy fold text

lua/lazyvim/config/init.lua

@@ -19,6 +19,9 @@ local defaults = {
   },
   -- icons used by other plugins
   icons = {
+    misc = {
+      dots = "󰇘",
+    },
     dap = {
       Stopped = { "󰁕 ", "DiagnosticWarn", "DapStoppedLine" },
       Breakpoint = " ",

lua/lazyvim/config/options.lua

@@ -46,6 +46,15 @@ opt.updatetime = 200 -- Save swap file and trigger CursorHold
 opt.wildmode = "longest:full,full" -- Command-line completion mode
 opt.winminwidth = 5 -- Minimum window width
 opt.wrap = false -- Disable line wrap
+opt.fillchars = {
+  foldopen = "",
+  foldclose = "",
+  -- fold = "⸱",
+  fold = " ",
+  foldsep = " ",
+  diff = "╱",
+  eob = " ",
+}
 
 if vim.fn.has("nvim-0.10") == 1 then
   opt.smoothscroll = true
@@ -60,7 +69,9 @@ else
   vim.opt.foldmethod = "indent"
 end
 if vim.treesitter.foldtext then
-  vim.opt.foldtext = "v:lua.vim.treesitter.foldtext()"
+  vim.opt.foldtext = "v:lua.require'lazyvim.util.ui'.foldtext()"
+end
+
 if vim.fn.has("nvim-0.9.0") == 1 then
   vim.opt.statuscolumn = [[%!v:lua.require'lazyvim.util.ui'.statuscolumn()]]
 end

lua/lazyvim/util/ui.lua

@@ -21,6 +21,15 @@ function M.icon(sign, len)
   return sign.texthl and ("%#" .. sign.texthl .. "#" .. text .. "%*") or text
 end
 
+function M.foldtext()
+  local ret = vim.treesitter.foldtext and vim.treesitter.foldtext()
+  if not ret then
+    ret = { { vim.api.nvim_buf_get_lines(0, vim.v.lnum - 1, vim.v.lnum, false)[1], {} } }
+  end
+  table.insert(ret, { " " .. require("lazyvim.config").icons.misc.dots })
+  return ret
+end
+
 function M.statuscolumn()
   local win = vim.g.statusline_winid
   if vim.wo[win].signcolumn == "no" then