mbox: read a 30kb chunk by default

mbox.lua

@@ -17,16 +17,21 @@ module("vicious.mbox")
 
 -- {{{ Mailbox widget type
 local function worker(format, mbox)
-    -- mbox could be huge, get a 15kb chunk from EOF
+    -- mbox could be huge, get a 30kb chunk from EOF
     --  * attachments could be much bigger than this
     local f = io.open(mbox)
-    f:seek("end", -15360)
+    f:seek("end", -30720)
     local txt = f:read("*all")
     f:close()
 
+    -- Default value
+    local subject = "N/A"
+
     -- Find all Subject lines
-    for s in string.gfind(txt, "Subject: ([^\n]*)") do subject = s end
-    if subject then
+    for i in string.gfind(txt, "Subject: ([^\n]*)") do
+       subject = i
+    end
+
     -- Spam sanitize only the last subject
     subject = helpers.escape(subject)
 
@@ -34,9 +39,6 @@ local function worker(format, mbox)
     subject = helpers.truncate(subject, 22)
 
     return {subject}
-    else
-        return {"N/A"}
-    end
 end
 -- }}}