如何在emacs中打开节点REPL？

Question

I'm going through the Coursera Startup Engineering course offered by Stanford. The assignment is asking me to open a node REPL within emacs by using the command Cc!. I don't seem to be able to use the '!' that it requires.

The instructor first has me using Cx 3 to split the buffer into two pieces. Then we are to use Cc! but I can't get it to work.

I have tried Ctrl-C -> Shift-! and I get the error message: Cc ! is undefined

I have tried enter the '!' while still holding Cc and also to use the meta key with no luck.

Anyone know what I'm doing wrong here? Could it be a problem with my keybindings?

Link to the tutorial video: https://class.coursera.org/startup-001/lecture/173

Answer 1

1. Check whether .emacs is present using the command " ls -la .emacs "
2. If it is present use "mv .emacs old.emacs"

This should solve your problem, for some more solutions regarding the same problem, check the thread

https://class.coursera.org/startup-001/forum/thread?thread_id=3013

Answer 2

The Cc keymap is generally mode-specific, so the missing step is that you're probably not in the right mode. The footnote he has mentions the "comint-mode" feature. when we loads fibonocci.js, he's just in Javascript mode, does the Cx 3, and then uses a keybinding that isn't present by default.

There's some info at how to run node.js interactively in Emacs on Windows . You probably don't have to use that however.

Your instructor has some code in his ~/.emacs - pulled in from a class Github repo - that should be shared with students. It's probably a good idea to review his lecture segment "Emacs: Installation" in 4b.

git clone https://github.com/startup-class/setup.git (the script in there calls "git clone https://github.com/startup-class/dotfiles.git " too)

It looks like he has a fondness for putting ".sh" on the end of shell scripts. Be warned that this is incorrect for shell scripts used as commands, since it unnecessarily exposes an implementation detail, breaking a sort of encapsulation.