Slouken je napisao par reči o 'velikim' izmenama planiranim za 2.4 Combat log. (Source)

2.4.0 Guide to the New Combat Log

Hello Fellow UI Modders,

With the release of patch 2.4.0, we’ve made some enormous changes to the existing combat log. While this will result in some hard work now, it should be easier to maintain your AddOns in the future.

The feature we’re most proud of is the ability to filter your combat log. The combat log stores the last five minutes worth of raw combat events. Filters can be setup on multiple criteria, affiliation, ownership, etc. Any events that match the current filter are passed through the client via the COMBAT_LOG_EVENT message. The combat log filter is global. However, AddOns which want to parse all events the moment they happen can register for the COMBAT_LOG_EVENT_UNFILTERED message. This should allow all existing AddOns to still respond to combat events without a complicated middle-manager AddOn.
While the default combat log will only be setting 1-2 filters at a time, the WoW client supports many simultaneous filters. It’s possible to setup multiple filters to filter very specific source-target-event combinations. If a combat log event passes any of the filters, the COMBAT_LOG_EVENT event fires. This allows AddOns to define extremely specific settings we chose not expose in the base UI.

The new combat log will be coming with two text formats. One is the familiar, grammatically correct sentences with substitutions. The other is a terse format, containing the source, target, spell, action and result. There will be a number of ways to manipulate the formatting, from unit name coloring to coloring the damage numbers by their magic school. The settings used for these formats are stored in the Blizzard_CombatLog_Filters variable.

The result of the new terse format is that it’s very easy to write AddOns to modify or extend the format which ships with 2.4.0. In the formatting section, you can read up on a quick demonstration of how to convert the combat log to a “Nurfed” style combat log. While you can do a lot by just adjusting the settings within WoW, it’s also possible to provide an AddOn that changes the strings used to generate the Combat Log messages. This allows for more extensive formatting changes without re-writing the entire parsing engine. See the Formatting Section for an example.

The whole combat log also supports a new coloring model, based on context. While by default, entire lines are a single color, highlighting the most important details. The combat log also supports coloring just unit names, spells, actions and damage numbers. Spells and damage can also be colored by school. However, there are several features not exposed in the base UI that AddOns can use right away. These are event-specific coloring, unit coloring with greater granularity and the ability to customize the list of highlighted events.

There are several other formatting related features. You can enable timestamps which show the time that spell or attack happened. You can show or hide square braces, change formatting without refreshing the combat log and disable the display of raid icons. These features were too niche to go into the base UI, but can be easily exposed for power users. By now you’ve already thought of some features of your own and are ready to get to coding. So let’s jump straight to some examples. 

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