(Note: names have been disguised here but are present in the linked material, same with expletives.)
From an IRC chat log:
<[person3]> besides, to be honest, i dont think your in a position to moan about this after your mission to 'Destroy [person2]'
<[person1]> mission "[person2] is a c***" was retaliation [person3], not initiation
and from a subsequent IRC chat log:
[23:22] <[person3]> you said it was your intent to literally destroy [person2]
[23:22] <[person3]> your words
[23:24] <[person1]> will I f*** with [person2] as much as possible within *my own moral boundaries*?
[23:24] <[person1]> absof***inglutely
This is a crystal clear declaration by the harasser that he will continue the abuse despite Mojang's statement on Minecraft modder conduct at Minecon last month. Note that the target of the abuse is female.
This campaign of destruction is why I wrote the above-linked item about Mojang addressing misconduct as well as a couple of earlier pieces here and here. It's been apparent to me for over a year, and I've been considering calling for a formalized Minecraft modder code of conduct since last spring when several incidents took place. (Repeated code of conduct violations were why a professional League of Legends player was banned for bad behavior.)
[I previously covered these quotes in a comment an earlier item.]
[Updated with a sentence clarifying target's gender, and updated again to censor the expletives.]
[Updated again with additional material from the second chat log.]