[PATCH] rules.lua.in: add "callback" option when a rule matches

[bob]

Hi,

This is a small patch which adds a callback option to the rules
(lib/awful/rules.lua). It will execute when the rule matches. An example on
how it can be used:

    -- Rules
    awful.rules.rules = {
        -- All clients will match this rule.
        { rule = { },
          callback = function(c)
              print('Client: ' .. c.name)
          end,
          properties = { } }


Kind regards,
Hiltjo Posthuma

The patch is added as an attachment. (It will apply to lib/awful/
rules.lua.in against git f3509f745a8e15d252d4d0ed81dfadc07009d425).

--- a/lib/awful/rules.lua.in	2009-11-01 12:46:39.000000000 +0100
+++ b/lib/awful/rules.lua.in	2009-11-07 19:16:02.000000000 +0100
@@ -87,6 +87,10 @@
             for property, value in pairs(entry.properties) do
                 props[property] = value
             end
+            -- Apply callback on client when rule matched.
+            if entry.callback then
+                entry.callback(c)
+            end
         end
     end