refactor: move thing out to utils

lua/gopher/_utils/init.lua

@@ -30,4 +30,11 @@ function utils.remove_empty_lines(t)
   return res
 end
 
+---@param s string
+---@return string
+function utils.trimend(s)
+  local r, _ = string.gsub(s, "%s+$", "")
+  return r
+end
+
 return utils

lua/gopher/struct_tags.lua

@@ -33,6 +33,7 @@
 local ts = require "gopher._utils.ts"
 local r = require "gopher._utils.runner"
 local c = require "gopher.config"
+local u = require "gopher._utils"
 local log = require "gopher._utils.log"
 local struct_tags = {}
 
@@ -77,7 +78,7 @@ local function handle_tags(fpath, bufnr, user_args)
   end
 
   for i, v in ipairs(res["lines"]) do
-    res["lines"][i] = string.gsub(v, "%s+$", "")
+    res["lines"][i] = u.trimend(v)
   end
 
   vim.api.nvim_buf_set_lines(

spec/unit/utils_test.lua

@@ -1,13 +1,5 @@
 local t = require "spec.testutils"
-local child = MiniTest.new_child_neovim()
-local T = MiniTest.new_set {
-  hooks = {
-    post_once = child.stop,
-    pre_case = function()
-      child.restart { "-u", t.mininit_path }
-    end,
-  },
-}
+local _, T = t.setup "utils"
 
 T["utils"] = MiniTest.new_set()
 T["utils"]["should .remove_empty_lines()"] = function()
@@ -26,4 +18,9 @@ T["utils"]["should .readfile_joined()"] = function()
   t.eq(u.readfile_joined(tmp), data)
 end
 
+T["utils"]["should .trimend()"] = function()
+  local u = require "gopher._utils"
+  t.eq(u.trimend "  hi   ", "  hi")
+end
+
 return T