nvim: ui: install nvim-ufo and statuscol.nvim for better folds and status column.

nvim/lua/user/utils/ufo.lua

@@ -0,0 +1,31 @@
+local M={}
+
+M.foldtext = function(virtText, lnum, endLnum, width, truncate)
+    local newVirtText = {}
+    local suffix = (' --- %d '):format(endLnum - lnum)
+    local sufWidth = vim.fn.strdisplaywidth(suffix)
+    local targetWidth = width - sufWidth
+    local curWidth = 0
+    for _, chunk in ipairs(virtText) do
+        local chunkText = chunk[1]
+        local chunkWidth = vim.fn.strdisplaywidth(chunkText)
+        if targetWidth > curWidth + chunkWidth then
+            table.insert(newVirtText, chunk)
+        else
+            chunkText = truncate(chunkText, targetWidth - curWidth)
+            local hlGroup = chunk[2]
+            table.insert(newVirtText, {chunkText, hlGroup})
+            chunkWidth = vim.fn.strdisplaywidth(chunkText)
+            -- str width returned from truncate() may less than 2nd argument, need padding
+            if curWidth + chunkWidth < targetWidth then
+                suffix = suffix .. (' '):rep(targetWidth - curWidth - chunkWidth)
+            end
+            break
+        end
+        curWidth = curWidth + chunkWidth
+    end
+    table.insert(newVirtText, {suffix, 'MoreMsg'})
+    return newVirtText
+end
+
+return M