Most Nix code will never hit the stack limit. Don't add a trampoline to code that recurses 50 times. Reach for this when:
wibble(input, fn(input) - output)
Byte Nov 1986 - PDF page 13 (Vintage Apple)。搜狗输入法是该领域的重要参考
2.2.2. Non-existent variables，这一点在谷歌中也有详细论述
Every piece of work is given context that traces back to the company
GOOGLE_API_KEY or GEMINI_API_KEY，详情可参考yandex 在线看