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vim plugin: Extensible Keyword Swapper

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README
swapit.txt Extensible Keyword Swapper

Author: Michael Brown <mjbrownie @ NOSPAMMY gmail.com>

            Usage Notes

1. SwapIt Introduction                                  |swapit-intro|

2. Setup                                                |swapit-setup|
    2.1 Requirements                                    |swapit-requirements|
    2.2 Installation                                    |swapit-installation|
    2.3 Bugs                                            |swapit-bugs|
    2.4 Limitations/Annoyances                          |swapit-annoyances|

3. Swapping
    3.1 Built in swap lists                             |swapit-builtin|
    3.2 Defining a swap list                            |swapit-define|
    3.3 xml/html swaps                                  |swapit-html|
    3.4 Multi word swaps                                |swapit-multiword|

4. Filetype Swaps                                       |swapit-filetype|

    4.1 Defining a filetype swap list                   |swapit-cleanup|

5. Omnicomplete Swapping                                |swapit-omnicomplete|

================================================================================
1. SwapIt Introduction                                  *swapit-intro*

    swapit.vim is a plugin designed to make it easier to perform common changes
    to various filetypes. It's designed to fill a niche where onmnicomplete for
    a given filetype is not providing any options. It is very easy to define your
    own lists for your own projects.

    It's most effective if you have a set of keywords between 2 and 10 in size.
    By default it uses the increment/decrement keystrokes |ctrl-a| |ctrl-x|.
    Although this can be custom mapped for screen users.

    A simple builtin example:

    setting=false

    moving the cursor over false in normal mode and pressing ctrl-a will result
    in

    setting=true

    The git repository is here http://github.com/mjbrownie/swapit/tree/master.
    I'd appreciate any additions.

================================================================================
2. Setup                                                          *swapit-setup*

2.1 Requirements                                           *swapit-requirements*

    Swapit has been tested on vim 7.0.

    If you are looking to use the xml/html tag complete option you need to have
    matchit.vim working correctly.

2.2 Installation                                           *swapit-installation*

    Copy the swapit.tar.gz file in your ~/.vim/ directory and extract.

2.3 Bugs                                                           *swapit-bugs*

    This is still a work in progress. There are still some bugs where the swap
    gets stuck in visual mode and on some line extremities the cursor can jump
    away from where you want it.

    In some cases having |'selection'| set to  exclusive mode can break things.
    Try:

    :set selection=inclusive

2.4 Limitations/Annoyances                                   *swapit-annoyances*

    Swapping is based on naive lists so the biggest limitation is when there is
    the same keyword in more than one list. If this happens then a selection
    box comes up where you decide which list to use, but its not as smoothe an
    operation. To combat this issue lists are filetype specific.

    For example if you have the following two lists:

    :SwapList octave do re me fa so la ti
    :SwapList self me myself I

    trying to swap the keyword 'me' will result in an option list coming up.

    Swap Options:  A . octave (me > fa)  B . self (me > myself)
    (A), (B):

    It would probably be possible to differentiate lists with some regex but
    this plugin is probably overkill already.

================================================================================

3 Swapping

    3.1 Built in swap lists                                     *swapit-builtin*

        swapit has a number of obvious lists defined eg. yes/no true/false etc.

    3.2 Defining a swap list                          *SwapList* *swapit-define*

       :SwapList <list_name> <member1> <member2> .. <membern>

       eg. :SwapList roman I II III IV V VI VII VII IX X

    3.3 xml/html swaps                                             *swapit-html*

        One of the most recent and useful features is you can swap xml/html
        tags.

        If you vim has matchit.vim loaded you can swap. Eg:

        <p> This should be an h1 </p>

        ctrl-a on the p will cycle to...

        <h1> This should be an h1 </h1>

        This behavior is defined by the command SwapXmlMatchit

        which is as follows

        SwapXmlMatchit <swap_list> <swap_list> ...

        ~/.vim/after/ftplugin/html_swapit.vim

        SwapList formats h1 h2 h3 h4 p strong em a
        SwapList layout div span script style
        SwapXmlMatchit formats layout

    3.4 Multi word swaps                                      *swapit-multiword*

        swapit can handle multiword swapping by entering into visual mode.

        I wrote it and didn't find a use for it so defining multiword swaps
        isn't as easy as single word swaps. you could manually define a list.

        ~/.vim/after/ftplugin/{filetype}_swapit.vim

        ClearSwapList

        let g:swap_lists = [
        \{'name':'hello_world', 'options':
        \['Hello World!','GoodBye Cruel World!' , 'See You Next Tuesday!']},
        ...
        \]

        etc.

================================================================================

4. Filetype Swaps

    4.1 Defining a filetype swap list               *SwapIdea* *swapit-filetype*

        The command

        :SwapIdea

        will open

        ~/.vim/after/ftplugin/{filetype}_swapit.vim

        The filetype file can be used to define custom swaps for

    4.2 Clearing a Swap List                    *ClearSwapList* *swapit-cleanup*

        The ClearSwapList command cleans up existing swap lists. Its useful to
        put this at the top of an after/ftplugin file.

        ClearSwapList

5. Omnicomplete Swapping                                *swapit-omnicomplete*

    Rather than repeating SwapLists that are similar to omnicomplete patterns
    it would be more preferable to use the omnicomplete function for the
    language.

    Swapit is capable of experimental looking up omnicomplete patterns
    currently only for CSS as of writing. I'd appreciate any ideas and
    additions in this area.

    For additions please fork.

    http://github.com/mjbrownie/swapit/tree/master

    Example of setting up a callback swapit function is as follows

    Firstly define the callback function in the

    after/ftplugin/<filetype>_swapit.vim file

    Eg in after/ftplugin/css_swapit.vim

    let b:swap_completefunc = 'cssswapit#CssSwapComplete'

    then define a function in the autoload folder

    autoload/cssswapit.vim. The function must take one argument specifying the
    direction 'forward' or 'backward' and return 1 on a successful swap or 0
    if no matches are made. Look at the cssswapit for an example.
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