This mode has been available on the community site for several years and has about 1200 downloads. I think it should be added to the core modes.
catalog entry:
<MODE NAME="Ant" FILE="ant.xml" FILE_NAME_GLOB="*.xml" FIRST_LINE_GLOB="<project*>" />
Ant mode file
Moving to patches tracker.
Committed to trunk in revision 18279.
Typo, committed in revision 18278.