small fixes

util/init.lua

@@ -17,7 +17,7 @@ local beautiful    = require("beautiful")
 local math         = { sqrt = math.sqrt }
 local mouse        = mouse
 local pairs        = pairs
-local string       = string
+local string       = { gsub = string.gsub }
 local client       = client
 local screen       = screen
 local tonumber     = tonumber

widgets/cpu.lua

@@ -58,7 +58,8 @@ local function worker(args)
         local dactive = active - cpu.last_active
         local dtotal = total - cpu.last_total
 
-        usage = tostring(math.ceil((dactive / dtotal) * 100))
+        cpu_now = {}
+        cpu_now.usage = tostring(math.ceil((dactive / dtotal) * 100))
 
         widget = cpu.widget
         settings()

widgets/imap.lua

@@ -14,6 +14,7 @@ local wibox        = require("wibox")
 local io           = { popen  = io.popen }
 local string       = { format = string.format,
                        gsub   = string.gsub }
+local tonumber     = tonumber
 
 local setmetatable = setmetatable
 
@@ -62,6 +63,7 @@ local function worker(args)
 
         t, mailcount = string.gsub(ws, "%d", "")
         t = nil -- because it's useless
+        mailcount = tonumber(mailcount)
 
         widget = imap.widget
         settings()