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Neovim Lua plugin to split and join arguments. Part of 'mini.nvim' library.

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Split and join arguments

See more details in Features and help file.


⦿ This is a part of mini.nvim library. Please use this link if you want to mention this module.

⦿ All contributions (issues, pull requests, discussions, etc.) are done inside of 'mini.nvim'.

⦿ See the repository page to learn about common design principles and configuration recipes.


If you want to help this project grow but don't know where to start, check out contributing guides of 'mini.nvim' or leave a Github star for 'mini.nvim' project and/or any its standalone Git repositories.

Demo

demo-splitjoin.mp4

Features

  • Mappings and Lua functions that modify arguments (regions inside brackets between allowed separators) under cursor.

    Supported actions:

    • Toggle - split if arguments are on single line, join otherwise. Main supported function of the module. See MiniSplitjoin.toggle() in help file.
    • Split - make every argument separator be on end of separate line. See MiniSplitjoin.split() in help file.
    • Join - make all arguments be on single line. See MiniSplitjoin.join() in help file.
  • Mappings are dot-repeatable in Normal mode and work in Visual mode.

  • Customizable argument detection (see MiniSplitjoin.config.detect in help file):

    • Which brackets can contain arguments.
    • Which strings can separate arguments.
    • Which regions exclude when looking for separators (like inside nested brackets or quotes).
  • Customizable pre and post hooks for both split and join. See split and join of MiniSplitjoin.config in help file.

  • Works inside comments by using modified notion of indent. See MiniSplitjoin.get_indent_part() in help file.

  • Provides low-level Lua functions for split and join at positions. See MiniSplitjoin.split_at() and MiniSplitjoin.join_at() in help file.

Notes:

  • Search for arguments is done using Lua patterns (regex-like approach). Certain amount of false positives is to be expected.

  • This module is mostly designed around MiniSplitjoin.toggle(). If initial split positions are on different lines, join first and then split.

  • Actions can be done on Visual mode selection, which mostly present as a safety route in case of incorrect detection of initial region. It uses MiniSplitjoin.get_visual_region() which treats selection as full brackets (use va) and not vi)).

Installation

This plugin can be installed as part of 'mini.nvim' library (recommended) or as a standalone Git repository.

There are two branches to install from:

  • main (default, recommended) will have latest development version of plugin. All changes since last stable release should be perceived as being in beta testing phase (meaning they already passed alpha-testing and are moderately settled).
  • stable will be updated only upon releases with code tested during public beta-testing phase in main branch.

Here are code snippets for some common installation methods (use only one):

With mini.deps
Github repo Branch Code snippet
'mini.nvim' library Main Follow recommended 'mini.deps' installation
Stable
Standalone plugin Main add('echasnovski/mini.splitjoin')
Stable add({ source = 'echasnovski/mini.splitjoin', checkout = 'stable' })
With folke/lazy.nvim
Github repo Branch Code snippet
'mini.nvim' library Main { 'echasnovski/mini.nvim', version = false },
Stable { 'echasnovski/mini.nvim', version = '*' },
Standalone plugin Main { 'echasnovski/mini.splitjoin', version = false },
Stable { 'echasnovski/mini.splitjoin', version = '*' },
With junegunn/vim-plug
Github repo Branch Code snippet
'mini.nvim' library Main Plug 'echasnovski/mini.nvim'
Stable Plug 'echasnovski/mini.nvim', { 'branch': 'stable' }
Standalone plugin Main Plug 'echasnovski/mini.splitjoin'
Stable Plug 'echasnovski/mini.splitjoin', { 'branch': 'stable' }

Important: don't forget to call require('mini.splitjoin').setup() to enable its functionality.

Note: if you are on Windows, there might be problems with too long file paths (like error: unable to create file <some file name>: Filename too long). Try doing one of the following:

  • Enable corresponding git global config value: git config --system core.longpaths true. Then try to reinstall.
  • Install plugin in other place with shorter path.

Default config

-- No need to copy this inside `setup()`. Will be used automatically.
{
  -- Module mappings. Use `''` (empty string) to disable one.
  -- Created for both Normal and Visual modes.
  mappings = {
    toggle = 'gS',
    split = '',
    join = '',
  },

  -- Detection options: where split/join should be done
  detect = {
    -- Array of Lua patterns to detect region with arguments.
    -- Default: { '%b()', '%b[]', '%b{}' }
    brackets = nil,

    -- String Lua pattern defining argument separator
    separator = ',',

    -- Array of Lua patterns for sub-regions to exclude separators from.
    -- Enables correct detection in presence of nested brackets and quotes.
    -- Default: { '%b()', '%b[]', '%b{}', '%b""', "%b''" }
    exclude_regions = nil,
  },

  -- Split options
  split = {
    hooks_pre = {},
    hooks_post = {},
  },

  -- Join options
  join = {
    hooks_pre = {},
    hooks_post = {},
  },
}

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Neovim Lua plugin to split and join arguments. Part of 'mini.nvim' library.

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