MinecraftForge/MinecraftForge — pull request #101 by sfPlayer1 (2012-07-08 20:29:07+00:00)
Title: Allow armor to block damage indication if the resulting damage is zero

The patch adds another field "IndicateDamageIfZero" to ArmorProperties, which causes damage to be completely ignored if it has been fully absorbed by the armor. It's enough for one armor item to have it set to false.