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vim-argwrap

This is an industrial strength argument wrapping and unwrapping extension for the VIM text editor. It can be used for collapsing and expanding everything from function calls to array and dictionary definitions.

Installation and Usage

  1. Clone or otherwise download the vim-argwrap extension from the GitHub page. If you are using vim-pathogen for plugin management (if you aren't you should) you can clone the repository directly to your bundle directory:
    git clone https://github.com/FooSoft/vim-argwrap ~/.vim/bundle/vim-argwrap.
  2. Create a keyboard binding for argwrap#toggle() inside your ~/.vimrc file. For example, you may declare a normal mode hotkey:
    nnoremap <silent> <leader>w :call argwrap#toggle()<CR>.
  3. Position cursor inside of the scope of the parenthesis or brackets you wish to wrap/unwrap (not on top or before or after them).
  4. Execute the keyboard binding defined above to toggle wrapping and unwrapping arguments.

Examples

Below are examples of some common use cases demonstrating the capabilities of vim-argwrap. The extension functions the same way regardless if it is being used on a function call, list or dictionary definitions.

Let's first look at a simple function invocation. When there are many arguments being passed in, we may wish to wrap them to improve readability. If we position your cursor anywhere between the ( and ) parenthesis and execute the argwrap#toggle() command, the function call arguments will be wrapped to one per line.

Foo('wibble', 'wobble', 'wubble')

Foo(
    'wibble',
    'wobble',
    'wubble'
)

List definitions work in a similar fashion:

foo = ['bar', 'baz', 'qux', 'quux', 'corge']
foo = [
    'bar',
    'baz',
    'qux',
    'quux',
    'corge'
]

Dictionaries work just fine too:

foo = {'bar': 1, 'baz': 3, 'qux': 3, 'quux': 7}
foo = {
    'bar': 1,
    'baz': 3,
    'qux': 3,
    'quux': 7
}

Finally, nested combinations of all the above are also supported:

Foo(['wibble', 'wobble', 'wubble'], 'spam', {'bar': 'baz', qux: [1, 3, 3, 7]})
Foo(
    ['wibble', 'wobble', 'wubble'],
    'spam',
    {'bar': 'baz', 'qux': [1, 3, 3, 7]}
)

Foo(
    [
        'wibble',
        'wobble',
        'wubble'
    ],
    'spam',
    {
        'bar': 'baz',
        'qux': [
            1,
            3,
            3,
            7
        ]
    }
)

All of the above argument wrapping and unwrapping operations demonstrated above are toggle-able and correctly preserve the indentation of the surrounding code. This extension has been tested to work in scenarios of various complexity, but if you discover a problem let me know.