[PATCH 2/2] PropertyNotify filters

[Alan Coopersmith]

On 12/01/11 12:53, Adam Jackson wrote:
> +AddPropertyFilter
> +
> +		window:			WINDOW
> +		property:		LISTofATOM
> +		mode:			{ Replace, Prepend, Append }
> +
> +	This request modifies the property filter for the named window for
> +	the requesting client.  If mode is Prepend or Append, the listed
> +	properties are added to the list of properties for which the client
> +	will receive events.  If mode is Replace, the list of properties
> +	replaces any existing filter list.  If an empty list is sent, no
> +	events will be sent for any property changes.

Why both Prepend & Append?  Does ordering matter for semantics, or is this
just a way to let applications try to hint at ordering for performance
optimization by putting most used first?

-- 
	-Alan Coopersmith-        alan.coopersmith at oracle.com
	 Oracle Solaris Platform Engineering: X Window System