buffers.nvim

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simple buffer switcher for neovim

buffers.nvim 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

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# About
Simple and efficient buffer switcher, using minimum of 2 keystrokes to get anywhere.
Whole plugin is just a single window and command.
This plugin is to meet my personal requirements, ~~which doesn't include colors or icons~~, although I might still add more features.

# Screenshot
![screenshot](https://github.com/user-attachments/assets/490ddd96-fb05-43bf-aa98-8fd66e819941)

# Installation
Just use any package manager to install.
`setup()` function is **not** provided, instead see [configuration](#configuration).
`icon` option depends on [nvim-web-devicons](https://github.com/nvim-tree/nvim-web-devicons), which must be loaded beforehand.

# Usage
Single command, `:BuffersToggle`, toggles buffer window.
Every buffer is filtered using customizable predicate,
by default that is: buffer exists and has `buflisted` option set (*see [defaults](#defaults)*)
In that window, only survived buffers are displayed.

From this window, any buffer can be opened using provided key next to it and buffers window is closed.

I recommend mapping `:BuffersToggle` to single key for fastest navigation.

# Configuration
Whole configuration is done via `vim.g.buffers_config` table which is checked every time buffers window opens,
so it can be tweaked, without reloading.
## Defaults
```lua
---@type buffers.Config
{
	width = 70, -- window width (longer lines are not yet handled)
	min_heigh = 6, -- minimum window height
	position = 'bottom_right', -- window position (can be 'bottom_right', 'top_right' or 'center')
	border = vim.o.winborder, -- window border (accepts same values as vim.api.keyset.win_config.border)
	win_opts = {}, -- additional window local options
	separator = ' | ', -- separator between char and buffer name
	icon = false, -- whether to show icons or not (requires nvim-tree/nvim-web-devicons)
	-- characters that can be bound to buffers
	chars = "qwertyuiopasdfghjklzxcvbnm1234567890",
	-- if non of the characters from `chars` is available use this list (see #internals for more info)
	backup_chars = "QWERTYUIOPASDFGHJKLZXCVBNM_-",
	-- called for every buffer, to determine if it should be listed in buffers window
	filter = function(bufnr)
		return vim.fn.buflised(bufnr)
	end,
	-- how to format buffer names ('relative_path', 'filename_first' or custom function)
	-- for function usage see #formatters
	formatter = 'relative_path',
	-- which keys are used to close the buffers window, without warning
	-- note: <C-c> always closes the window
	close_keys = {"<Esc>"},
}
```

# Internals
## Picking chars
Single character bound to each buffer is generated by simple algorithm called `get_buffer_char`.
```lua
local function get_buffer_char(name, buffer_table, chars)
	local char = name:sub(1, 1)
	local i = 2
	while buffer_table:get(char) or chars:find(char, 1, true) == nil do
		if i > #name then
			return nil
		end
		char = name:sub(i, i)
		i = i + 1
	end
	return char
end
```
This function returns first valid character from buffer's name.
Character is valid if it's:
- not already used
- found in `chars` string

Usage of this function is more interesting:
- For each buffer, first it's called with `chars` string from configuration.
- If `nil` is returned, than it's called with `backup_chars`.
- If that also fails, first available character from `chars` and `backup_chars` is used.

Accidental overlap of keys is pretty much impossible.

## Mapping chars
For actually mapping character to buffers, `getcharstr` function is used.
Before commit `a541273`, I was using keymaps which where problematic!
[thanks to this comment](https://www.reddit.com/r/neovim/comments/1lhuqgp/comment/mzaa6u5/?utm_source=share&utm_medium=web3x&utm_name=web3xcss&utm_term=1&utm_content=share_button)

`close_keys` option was added because of `getcharstr`,
so `BuffersToggle` command is less useful, and can just be `BuffersOpen`, but it still functions as toggle.

## Formatters
each formatter is a function that takes full path to a file and returns two values:
1. `string` formatted string to be used
2. `integer[]` pair which denotes range for highlighting with `Comment` hl group.
This should be used for less important info, like file path to make file name stand out more.
Range is end-exclusive.

# TODO
- [x] add custom formatting option
- [x] add icons
- [ ] add more highlights
- [ ] add docs

# Contribution
PRs and Issues are welcome!

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