Earlier quoted context omitted.
What's there to talk about? You install it and suddenly you have the same programming language features that everyone else does, but in an editor that can actually manipulate text.
Do you really? I have been trying to get it to run properly for years for c++ and I found it buggy to the point of uselessness.
Having used it in quite a few different languages now it varies greatly; but you can hardly blame Emacs for that.