fix few issues

todo-widget/todo.lua

@@ -200,7 +200,7 @@ local function worker(args)
                 widget = wibox.container.background
             }
 
-            trash_button:connect_signal("button::press", function(c)
+            trash_button:connect_signal("button::press", function()
                 table.remove(result.todo_items, i)
                 spawn.easy_async_with_shell("printf '" .. json.encode(result) .. "' > " .. STORAGE, function ()
                     spawn.easy_async(GET_TODO_ITEMS, function(stdout) update_widget(stdout) end)
@@ -214,7 +214,7 @@ local function worker(args)
                 widget = wibox.widget.imagebox
             }
 
-            move_up:connect_signal("button::press", function(c)
+            move_up:connect_signal("button::press", function()
                 local temp = result.todo_items[i]
                 result.todo_items[i] = result.todo_items[i-1]
                 result.todo_items[i-1] = temp

translate-widget/translate.lua

@@ -159,9 +159,9 @@ input_widget:setup{
     widget = wibox.container.margin
 }
 
-local function launch(args)
+local function launch(user_args)
 
-    local args = args or {}
+    local args = user_args or {}
 
     local api_key = args.api_key
     local url = args.url

volume-widget/volume.lua

@@ -165,7 +165,7 @@ local function worker(args)
 --}}}
 
 --{{{ Set initial icon
-    spawn.easy_async(GET_VOLUME_CMD, function(stdout, stderr, exitreason, exitcode)
+    spawn.easy_async(GET_VOLUME_CMD, function(stdout)
         parse_output(stdout)
         volume.widget.image = PATH_TO_ICONS .. volume_icon_name .. ".svg"
     end)

weather-widget/weather.lua

@@ -27,7 +27,6 @@ end
 
 local weather_widget = {}
 local warning_shown = false
-local notification
 local tooltip = awful.tooltip {
     mode = 'outside',
     preferred_positions = {'bottom'}
@@ -115,9 +114,9 @@ local function uvi_index_color(uvi)
     return '<span weight="bold" foreground="' .. color .. '">' .. uvi .. '</span>'
 end
 
-local function worker(args)
+local function worker(user_args)
 
-    local args = args or {}
+    local args = user_args or {}
 
     --- Validate required parameters
     if args.coordinates == nil or args.api_key == nil then
@@ -384,7 +383,7 @@ local function worker(args)
             hourly_forecast_negative_graph:set_max_value(math.abs(min_temp))
             hourly_forecast_negative_graph:set_min_value(max_temp < 0 and math.abs(max_temp) * 0.7 or 0)
 
-            for i, value in ipairs(values) do
+            for _, value in ipairs(values) do
                 if value >= 0 then
                     hourly_forecast_graph:add_value(value)
                     hourly_forecast_negative_graph:add_value(0)
@@ -470,12 +469,9 @@ local function worker(args)
     local function update_widget(widget, stdout, stderr)
         if stderr ~= '' then
             if not warning_shown then
-                if (
-                    stderr ~= 'curl: (52) Empty reply from server' and
-                    stderr ~= 'curl: (28) Failed to connect to api.openweathermap.org port 443: Connection timed out' and
-                    stderr:find(
-                        '^curl: %(18%) transfer closed with %d+ bytes remaining to read$'
-                    ) ~= nil
+                if (stderr ~= 'curl: (52) Empty reply from server'
+                    and stderr ~= 'curl: (28) Failed to connect to api.openweathermap.org port 443: Connection timed out'
+                    and stderr:find('^curl: %(18%) transfer closed with %d+ bytes remaining to read$') ~= nil
                 ) then
                     show_warning(stderr)
                 end

word-clock-widget/word-clock.lua

@@ -55,9 +55,9 @@ end
 
 local text_clock = {}
 
-local function worker(args)
+local function worker(user_args)
 
-    local args = args or {}
+    local args = user_args or {}
 
     local main_color = args.main_color or beautiful.fg_normal
     local accent_color = args.accent_color or beautiful.fg_urgent
@@ -81,7 +81,10 @@ local function worker(args)
             local t = split(time)
             local res = ''
             for i, v in ipairs(t) do
-                res = res .. '<span color="' .. ((i % 2 == 0) and accent_color or main_color) .. '">' .. v .. '</span>' .. (with_spaces and ' ' or '')
+                res = res .. '<span color="'
+                .. ((i % 2 == 0) and accent_color or main_color)
+                .. '">' .. v .. '</span>'
+                .. (with_spaces and ' ' or '')
             end
             self:get_children_by_id('clock')[1]:set_markup(res)
         end