如果在开张前线有已知的字句,则使用原封顶取代曲线之间的模式
原文：Using sed to replace a pattern between curly braces where line immediately before the opening curly brace has a known word

I would like to change: inlet { type patch; ... } outlet { type patch; } to inlet { type wall; ... } outlet { type patch; } As a first attempt to achieve ...