Table of Contents

• Emacs
• Installation
• Key bindings
• Customization

Emacs

The hopjs.el file contains various customizations and extensions of the official Emacs js-mode.el for editing HopScript code. Its main features are:

1. Mixed JavaScript/HTML automatic indentation.
2. On-line documentation access.
3. Parenthesis/tag matching.
4. Automatic closing context.

Installation

The file hopjs.el is installed into the directory:

INSTALL_PREFIX/share/hop/site-lisp/hopjs.el

To use it, proceeds as follows:

1. Add the INSTALLPREFIX/share/hop/site-lisp/hopjs.el to the Emacs load path. For that add the $HOME/.emacs file the following expression:

   (setq load-path (cons "INSTALLPREFIX/share/hop/site-lisp" load-path))
   

2. Add the hopjs.el file in the autoload of your emacs configuration. Append to $HOME/.emacs the following expression:

   (autoload 'hopjs-mode-hook "hopjs" "Hop.js javascript mode hook" t)
   

3. Hook the hopjs.el facilities to the official js-mode.el:

   (add-hook 'js-mode-hook 'hopjs-mode-hook)
   

4. Customize the js-mode indentation to conform the HopScript coding style:

   (custom-set-variables '(js-indent-level 3))
   

Key bindings

The hopjs.el mode defines the following key bindings:

• [mouse-2]: on highlighted identifiers jumps to the on-line documentation.
• [\C-c\C-c]: closes the opening context (i.e., a opening tag or a parenthesis).

Customization

The hopjs.el configuration can be access with:

ESC-X: customize-group hopjs