Hacker News Reader

But what if, in the midst of writing this program, you need to rename all occurrences of a variable?

Depends if I'm being paid by the hour or the job :)

I assume you would call it sed?

I was trying to illustrate how far down the list I would go before resorting to manually selecting each character with a mouse. Sed is much higher on the list.

That's a little unfair. If I was only changing one or two characters then the mouse is fine. If I'm changing more than about 10-20 there will be a hunt for an alternative.