nvim: Show selection in lualine

Shows number of lines and characters selected in visual mode.

nvim/.config/nvim/lua/plugins/ui.lua

@@ -29,6 +29,19 @@ return {
 				end
 				return ""
 			end
+
+            -- count number of selected lines and characters
+            -- stolen: https://github.com/chrisgrieser/.config/blob/8af1841ba24f7c81c513e12f853b52f530ef5b37/nvim/lua/plugins/lualine.lua#L80C1-L87C4
+			local function selectionCount()
+				local isVisualMode = vim.fn.mode():find("[Vv]")
+				if not isVisualMode then
+					return ""
+				end
+				local starts = vim.fn.line("v")
+				local ends = vim.fn.line(".")
+				local lines = starts <= ends and ends - starts + 1 or starts - ends + 1
+				return " " .. tostring(lines) .. "L " .. tostring(vim.fn.wordcount().visual_chars) .. "C"
+			end
 			require("lualine").setup({
 				options = {
 					icons_enabled = true,
@@ -44,7 +57,7 @@ return {
 					lualine_c = { "filename" },
 					lualine_x = { "encoding", "fileformat", "filetype", molten },
 					lualine_y = { "progress" },
-					lualine_z = { "location" },
+					lualine_z = { selectionCount, "location" },
 				},
 				inactive_sections = {
 					lualine_a = {},