从Python / ceval.c:

/* This is gonna seem *real weird*, but if you put some other code between
   PyEval_EvalFrame() and PyEval_EvalCodeEx() you will need to adjust
   the test in the if statements in Misc/gdbinit (pystack and pystackv). */

我刚刚完成了一个日志框架(使用Trace，为什么没有这样的存在我不知道)。我做了一个继承自TraceListener的方便基类。它覆盖了所有的TraceListener方法，并将它们路由到一个方法中——因此有很多文档注释:

// TODO: Need some codemonkey to doc comment this class.

{
This is a gathering place for all unit tests.
Create a TUnitTestWrapper, then call "RunAllUnitTests".

This class will create an instance of each thing to be tested, and call each of
their unit tests.

It does not really do any testing on it's own; it just gives a common place from
which to call everyone else's tests.

This way, one day, we can automate our testing with each build. [Cue laughter]
}

// I'm sorry.

最初的《毁灭战士》拥有一个带有静态墙壁的引擎，但却不能移动;结果，所有的门都是垂直打开的;任何东西都不可能水平移动。当源代码发布后，我在查看代码时，在处理门的源文件中看到了这个，在一大块注释掉的代码的开头:

// UNUSED
// Separate into p_slidoor.c?

#if 0           // ABANDONED TO THE MISTS OF TIME!!!
//
// EV_SlidingDoor : slide a door horizontally
// (animate midtexture, then set noblocking line)
//

-- Comment this later

这是一个4000多行的PL/SQL过程的第2行。唯一的评论。手术已经进行了4年了，后来还是没来…