Provides font-lock, REPL integration ( via comint ) and a basic help documentation for the J programming language.
j-mode has been added to the el-get package managment system and can now
be installed via the el-get-install function.
To install the project manually fetch the source via git or direct download, place in your load path and load / require normally.
;; Add this to your emacs config
(add-to-list 'load-path "/path/to/j-mode/")
(autoload 'j-mode "j-mode.el" "Major mode for editing J files" t)
;; Add for detection of j source files if the auto-load fails
(add-to-list 'auto-mode-alist '("\\.ij[rstp]$" . j-mode))j-mode font-lock provides four new faces for management of the coloring
various parts of speech. Those faces are j-verb-face j-adverb-face
j-conjunction-face j-other-face. They can be modified like any of the
standard built in faces to help meet your need.
(custom-set-face
'(j-verb-face ((t (:foreground "Red"))))
'(j-adverb-face ((t (:foreground "Green"))))
'(j-conjunction-face ((t (:foreground "Blue"))))
'(j-other-face ((t (:foreground "Black")))))Interaction to the j REPL is provided via the comint module. The j-console
function starts the REPL session in a new buffer.
The module provides the following key bindings for convenience
- C-c ! Runs the
j-consolefunction - C-c C-l Executes the current line
- C-c C-r Executes the current region
- C-c C-c Executes the current buffer
NB. Java on many Linux systems provides an executable which is sadly named
jconsole. This means that there is a good chance j-mode will attempt to
start the Java console up instead of the J console when beginning a new REPL
session. The easiest fix for this, as I doubt that we can convince the Java
packagers to rename their executable, is to set the j-console-cmd variable
provided by j-console.el. This can be done either directly or via the
custom-set-variables block.
j-help provides access to the
J software vocabulary
via two functions j-help-lookup-symbol and
j-help-lookup-symbol-at-point. j-help-look-symbol takes one string argument
( generally via the mini-buffer ) which it then looks up.
j-help-lookup-symbol-at-point attempts to determine which symbol is under your
cursor and then passes that to j-help-lookup-symbol.
The module provides the following key bindings for convenience
- C-c h runs
j-help-lookup-symbol - C-c C-h
j-help-lookup-symbol-at-point
Copyright (C) 2012-2014 Zachary Elliott
Distributed under the GNU General Public License; see C-h t in emacs to view.