XML 変換言語はチューリングおじさんの夢を見ない / Lambda calculus implementation by XSLT 1.0 - Speaker Deck
https://speakerdeck.com/lo48576/lambda-calculus-implementation-by-xslt-1-dot-0
lo48576/xslt10-lambda-calculus: Lambda calculus by XSLT 1.0 (and `node-set()` of EXSLT)
https://github.com/lo48576/xslt10-lambda-calculus
λ計算の評価規則を素朴に XSLT に翻訳すると処理系書けたよみたいな話です、ご査収ください