NED Major Mode

An Emacs major mode for NED files which are used in OMNeT++. Our aim now is to provide: syntax highlighting, indentation support and a few commands. Now it has a basic implementation of autocomlation for packages name.

Indentation

(This section is based on the work done in coffee-mode)

TAB Theory

It goes like this: when you press TAB, we indent the line unless doing so would make the current line more than two indentation levels deepers than the previous line. If that's the case, remove all indentation.

Consider this code, with point at the position indicated by the caret:

line1()
  line2()
  line3()
     ^

Pressing TAB will produce the following code:

line1()
  line2()
    line3()
       ^

Pressing TAB again will produce this code:

line1()
  line2()
line3()
   ^

And so on. I think this is a pretty good way of getting decent indentation with a whitespace-sensitive language.

Newline and Indent

We all love hitting RET and having the next line indented properly. Given this code and cursor position:

line1()
  line2()
  line3()
        ^

Pressing RET would insert a newline and place our cursor at the following position:

line1()
  line2()
  line3()

  ^

In other words, the level of indentation is maintained. This applies to comments as well. Combined with the TAB you should be able to get things where you want them pretty easily.

Indenters

class, for, if, and possibly other keywords cause the next line to be indented a level deeper automatically.

For example, given this code and cursor position::

class Animal
            ^

Pressing enter would produce the following:

class Animal

  ^

That is, indented a column deeper.

This also applies to lines ending in ->, =>, {, [, and possibly more characters.

So this code and cursor position:

$('#demo').click ->
                   ^

On enter would produce this:

$('#demo').click ->

  ^

Multiline comment

If the last line was a comment, the following will probably be too. This makes it easy to write multi-line comments

Feature

• Highlighting comments
• Highlighting keywords
• Auto indent

Bugs

If you have any issues using this mode please use https://github.com/dalwadani/ned-mode/issues