mdir: support for multiple directories

Signed-off-by: Adrian C. (anrxc) <anrxc@sysphere.org>

README

@@ -220,8 +220,8 @@ vicious.widgets.mboxc
 
 vicious.widgets.mdir
   - provides a number of new and unread messages in a Maildir
-    structure
-  - takes the full path to the Maildir structure as an argument
+    structures/directories
+  - takes a table with full paths to Maildir structures as an argument
   - returns 1st value as the count of new messages and 2nd as the
     count of "old" messages lacking the Seen flag
 

mdir.lua

@@ -15,19 +15,21 @@ module("vicious.mdir")
 
 
 -- {{{ Maildir widget type
-local function worker(format, mdir)
+local function worker(format, warg)
     -- Initialise counters
     local count = { new = 0, cur = 0 }
 
+    for i=1, #warg do
         -- Recursively find new messages
-    local f = io.popen("find "..mdir.." -type f -wholename '*/new/*'")
+        local f = io.popen("find "..warg[i].." -type f -wholename '*/new/*'")
         for line in f:lines() do count.new = count.new + 1 end
         f:close()
 
         -- Recursively find "old" messages lacking the Seen flag
-    local f = io.popen("find "..mdir.." -type f -regex '.*/cur/.*2,[^S]*$'")
+        local f = io.popen("find "..warg[i].." -type f -regex '.*/cur/.*2,[^S]*$'")
         for line in f:lines() do count.cur = count.cur + 1 end
         f:close()
+    end
 
     return {count.new, count.cur}
 end