ToME: the Tales of Maj'Eyal

How can I modify a class that already exists to gain a talent at birth without overloading the file? I'm looking to do this with a talent like teleport anglowen, so having it learn a category and automatically put points in it doesn't work.

Short answer, if you know how to edit a class already:
getBirthDescriptor("subclass", "<replace with class name>").talents["<replace with talent id>"] = 1


Long answer, if you are using a separate file to store all the class changes in one neat package:
Start with the ToME:load hook.
In the ToME:load hook put:
local Birther = require "engine.Birther"
Birther:loadDefinition("path to birth editing file here")

Inside this birth editing file put:
getBirthDescriptor("subclass", "<replace with class name>").talents["<replace with talent id>"] = 1


If you just want to do nothing else, you can simplify it:
class:bindHook('ToME:load', function(self, data)
local Birther = require 'engine.Birther'
Birther:getBirthDescriptor("subclass", "<replace with class name>").talents["<replace with talent id>"] = 1
end)

Thank you!