Fix reports from luacheck (#1031)

lua/core/autopairs.lua

@@ -1,7 +1,7 @@
 -- if not package.loaded['nvim-autopairs'] then
 --   return
 -- end
-local status_ok, autopairs = pcall(require, "nvim-autopairs")
+local status_ok, _ = pcall(require, "nvim-autopairs")
 if not status_ok then
   return
 end

lua/core/formatter.lua

@@ -48,7 +48,7 @@ end
 --     end
 --   end
 -- end
-local status_ok, formatter = pcall(require, "formatter")
+local status_ok, _ = pcall(require, "formatter")
 if not status_ok then
   return
 end

lua/core/linter.lua

@@ -19,7 +19,7 @@ M.setup = function()
   end
 end
 
-local status_ok, linter = pcall(require, "lint")
+local status_ok, _ = pcall(require, "lint")
 if not status_ok then
   return
 end

lua/lsp/init.lua

@@ -111,7 +111,7 @@ autocmd BufWritePre *.lua lua vim.lsp.buf.formatting_sync(nil, 100) ]]
 -- Java
 -- autocmd FileType java nnoremap ca <Cmd>lua require('jdtls').code_action()<CR>
 
-local function documentHighlight(client, bufnr)
+local function documentHighlight(client, _)
   -- Set autocommands conditional on server_capabilities
   if client.resolved_capabilities.document_highlight then
     vim.api.nvim_exec(
@@ -202,7 +202,7 @@ if O.lsp.document_highlight then
   end
 end
 
-function lsp_config.tsserver_on_attach(client, bufnr)
+function lsp_config.tsserver_on_attach(client, _)
   -- lsp_config.common_on_attach(client, bufnr)
   client.resolved_capabilities.document_formatting = false
 

lua/lv-utils/init.lua

@@ -210,7 +210,7 @@ function lv_utils.gsub_args(args)
   end
   local buffer_filepath = vim.fn.fnameescape(vim.api.nvim_buf_get_name(0))
   for i = 1, #args do
-    args[i], _ = string.gsub(args[i], "${FILEPATH}", buffer_filepath)
+    args[i] = string.gsub(args[i], "${FILEPATH}", buffer_filepath)
   end
   return args
 end