wifi: proper fix for SSID regexp

widgets/wifi.lua

@@ -7,6 +7,7 @@
 local tonumber = tonumber
 local math = { ceil = math.ceil }
 local setmetatable = setmetatable
+local helpers = require("vicious.helpers")
 local io = {
     open = io.open,
     popen = io.popen
@@ -57,7 +58,7 @@ local function worker(format, warg)
     -- Output differs from system to system, some stats can be
     -- separated by =, and not all drivers report all stats
     winfo["{ssid}"] =  -- SSID can have almost anything in it
-      string.match(iw, 'ESSID[=:]"([%w%p]+[%s%w%p]*)"') or winfo["{ssid}"]
+      helpers.escape(string.match(iw, 'ESSID[=:]"(.-)"') or winfo["{ssid}"])
     winfo["{mode}"] =  -- Modes are simple, but also match the "-" in Ad-Hoc
       string.match(iw, "Mode[=:]([%w%-]*)") or winfo["{mode}"]
     winfo["{chan}"] =  -- Channels are plain digits