Question

如果我通过<条码>b在我的终点站贴出一些文件,那么当我离开页码时,案文就不再存在——这实际上是冰。

然而,如果我从废墟上说出同样的话,则在终点站的正文中仍保留页码:

exec  less somefile

How can I get the same behavior, where the text is no longer leaving gunk in the terminal? I have no idea how less pulls this off.

Answer 1

而且,为了完全诚实,我的<代码>LESS环境可意外地载于X,作为。上文提及的John Zwinck ,阻止了less打开屏幕。

奇怪的是,我用一些 tput smcup和tput rmcup。在人们可能希望恢复筛查的情况下,利用从鲁比拉进行这种检查是明智的:

def restore
  system  tput smcup 
  yield
  system  tput rmcup 
end

# The screen will be restored at the end of the block:
restore do
  100.times { puts "Look fast!" }
end

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