- more docs!

lib/logstash/filters/base.rb

@@ -10,7 +10,9 @@ class LogStash::Filters::Base < LogStash::Plugin
 
   config_name "filter"
 
-  # The type to act on. A filter 
+  # The type to act on. If a type is given, then this filter will only
+  # act on messages with the same type. See any input plugin's "type" 
+  # attribute for more.
   config :type, :validate => :string
 
   # If this filter is successful, add arbitrary tags to the event.

lib/logstash/filters/date.rb

@@ -6,7 +6,7 @@ require "logstash/time"
 # date or timestamp as the timestamp for the event.
 #
 # For example, syslog events usually have timestamps like this:
-#   "Apr  7 09:32:01"
+#   "Apr 17 09:32:01"
 #
 # You would use the date format "MMM dd HH:mm:ss" to parse this.
 #

lib/logstash/filters/grep.rb

@@ -16,7 +16,8 @@ class LogStash::Filters::Grep < LogStash::Filters::Base
   # through.
   config :negate, :validate => :boolean, :default => false
 
-  # A hash of matches of field => value
+  # A hash of matches of field => regexp
+  # Normal regular expressions are supported here.
   config :match, :validate => :hash, :default => {}
 
   # Config for grep is:

lib/logstash/filters/grok.rb

@@ -26,7 +26,6 @@ require "set"
 # * Int/float coercion requires >= 1.20110223.*
 # * In-line pattern definitions >= 1.20110630.*
 #
-#
 # Note:
 # CentOS 5 ships with an ancient version of pcre that does not work with grok.
 class LogStash::Filters::Grok < LogStash::Filters::Base