Using this addon, you can reply automatically to achievement announcements in guild chat with pre configured reply messages.
Simply install and activate this addon.
There is no graphical user interface yet, but you can add or modify messages by opening the LUA file at "...\World of Warcraft\Interface\AddOns\MrNiceGuy\main.lua" with a simple text editor.
Example:
local messages = {
"Gz {}, you are the best!",
"I'm so jealous right now!",
}
Please note that the curly brackets {} will be replaced by the character name, who announced the achievement in the guild chat.
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Thanks to my guild for inspiring me writing this addon, especially Dimi, Tanja, Stephan and Micha :)