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-- MIT License Copyright (c) 2021 Evgeni Chasnovski
---@brief [[
--- Custom minimal and fast autopairs Lua module. It provides functionality
--- to work with 'paired' characters conditional on cursor's neighborhood (two
--- characters to its left and right). Its usage should be through making
--- appropriate mappings using |MiniPairs.map| or in |MiniPairs.setup| (for
--- global mapping), |MiniPairs.map_buf| (for buffer mapping). Pairs get
--- automatically registered to be recognized by `<BS>` and `<CR>`.
---
--- What it doesn't do:
--- - It doesn't support multiple characters as "open" and "close" symbols. Use
--- snippets for that.
--- - It doesn't support dependency on filetype. Use |i_CTRL-V| to insert
--- single symbol or `autocmd` command or 'after/ftplugin' approach to:
--- - `lua MiniPairs.map_buf(0, 'i', <*>, <pair_info>)` : make new mapping
--- for '<*>' in current buffer.
--- - `lua MiniPairs.unmap_buf(0, 'i', <*>, <pair>)`: unmap key `<*>` while
--- unregistering `<pair>` pair in current buffer.
--- - Disable module for buffer (see 'Disabling' section).
---
--- # Setup
---
--- This module needs a setup with `require('mini.pairs').setup({})`
--- (replace `{}` with your `config` table). It will create global Lua table
--- `MiniPairs` which you can use for scripting or manually (with
--- `:lua MiniPairs.*`).
---
--- Default `config`:
--- <code>
--- {
--- -- In which modes mappings from this `config` should be created
--- modes = {insert = true, command = false, terminal = false}
---
--- -- Global mappings. Each right hand side should be a pair information, a
--- -- table with at least these fields (see more in |MiniPairs.map|):
--- -- - `action` - one of 'open', 'close', 'closeopen'.
--- -- - `pair` - two character string for pair to be used.
--- -- By default pair is not inserted after `\`, quotes are not recognized by
--- -- `<CR>`, `'` does not insert pair after a letter.
--- -- Only parts of the tables can be tweaked (others will use these defaults).
--- mappings = {
--- ['('] = { action = 'open', pair = '()', neigh_pattern = '[^\\].' },
--- ['['] = { action = 'open', pair = '[]', neigh_pattern = '[^\\].' },
--- ['{'] = { action = 'open', pair = '{}', neigh_pattern = '[^\\].' },
---
--- [')'] = { action = 'close', pair = '()', neigh_pattern = '[^\\].' },
--- [']'] = { action = 'close', pair = '[]', neigh_pattern = '[^\\].' },
--- ['}'] = { action = 'close', pair = '{}', neigh_pattern = '[^\\].' },
---
--- ['"'] = { action = 'closeopen', pair = '""', neigh_pattern = '[^\\].', register = { cr = false } },
--- ["'"] = { action = 'closeopen', pair = "''", neigh_pattern = '[^%a\\].', register = { cr = false } },
--- ['`'] = { action = 'closeopen', pair = '``', neigh_pattern = '[^\\].', register = { cr = false } },
--- },
--- }
--- </code>
---
--- # Example mappings
---
--- <pre>
--- - Register quotes inside `config` of |MiniPairs.setup|:
--- `mappings = {`
--- ` ['"'] = { register = { cr = true } },`
--- ` ["'"] = { register = { cr = true } },`
--- `}`
--- - Insert `<>` pair if `<` is typed as first character in line, don't register for `<CR>`:
--- `lua MiniPairs.map('i', '<', { action = 'open', pair = '<>', neigh_pattern = '\r.', register = { cr = false } })`
--- `lua MiniPairs.map('i', '>', { action = 'close', pair = '<>', register = { cr = false } })`
--- - Create symmetrical `$$` pair only in Tex files:
--- `au FileType tex lua MiniPairs.map_buf(0, 'i', '$', {action = 'closeopen', pair = '$$'})`
--- </pre>
---
--- # Notes
--- - Make sure to make proper mapping of `<CR>` in order to support completion
--- plugin of your choice.
--- - Having mapping in terminal mode can conflict with:
--- - Autopairing capabilities of interpretators (`ipython`, `radian`).
--- - Vim mode of terminal itself.
---
--- # Disabling
---
--- To disable, set `g:minipairs_disable` (globally) or `b:minipairs_disable`
--- (for a buffer) to `v:true`.
---@brief ]]
---@tag MiniPairs mini.pairs
-- Module and its helper --<
8000
/div>
local MiniPairs = {}
local H = {}
--- Module setup
---
---@param config table: Module config table.
---@usage `require('mini.completion').setup({})` (replace `{}` with your `config` table)
function MiniPairs.setup(config)
-- Export module
_G.MiniPairs = MiniPairs
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Module behavior
vim.api.nvim_exec(
[[augroup MiniPairs
au!
au FileType TelescopePrompt let b:minipairs_disable=v:true
au FileType fzf let b:minipairs_disable=v:true
augroup END]],
false
)
end
-- Module config --
MiniPairs.config = {
-- In which modes mappings from this `config` should be created
modes = { insert = true, command = false, terminal = false },
-- Global mappings. Each right hand side should be a pair information, a
-- table with at least these fields (see more in |MiniPairs.map|):
-- - `action` - one of 'open', 'close', 'closeopen'.
-- - `pair` - two character string for pair to be used.
-- By default pair is not inserted after `\`, quotes are not recognized by
-- `<CR>`, `'` does not insert pair after a letter.
-- Only parts of the tables can be tweaked (others will use these defaults).
mappings = {
['('] = { action = 'open', pair = '()', neigh_pattern = '[^\\].' },
['['] = { action = 'open', pair = '[]', neigh_pattern = '[^\\].' },
['{'] = { action = 'open', pair = '{}', neigh_pattern = '[^\\].' },
[')'] = { action = 'close', pair = '()', neigh_pattern = '[^\\].' },
[']'] = { action = 'close', pair = '[]', neigh_pattern = '[^\\].' },
['}'] = { action = 'close', pair = '{}', neigh_pattern = '[^\\].' },
['"'] = { action = 'closeopen', pair = '""', neigh_pattern = '[^\\].', register = { cr = false } },
["'"] = { action = 'closeopen', pair = "''", neigh_pattern = '[^%a\\].', register = { cr = false } },
['`'] = { action = 'closeopen', pair = '``', neigh_pattern = '[^\\].', register = { cr = false } },
},
}
-- Module functionality --
--- Make global mapping
---
--- This is similar to |nvim_set_keymap()| but instead of right hand side of
--- mapping (as string) it expects table with pair information:
--- - `action` - one of 'open' (for |MiniPairs.open|), 'close' (for
--- |MiniPairs.close|), or 'closeopen' (for |MiniPairs.closeopen|).
--- - `pair` - two character string to be used as argument for action function.
--- - `neigh_pattern` - optional 'two character' neighborhood pattern to be
--- used as argument for action function. Default: '..' (no restriction from
--- neighborhood).
--- - `register` - optional table with information about whether this pair
--- should be recognized by `<BS>` (in |MiniPairs.bs|) and/or `<CR>` (in
--- |MiniPairs.cr|). Should have boolean elements `bs` and `cr` which are
--- both `true` by default (if not overriden explicitly).
---
--- Using this function instead of |nvim_set_keymap()| allows automatic
--- registration of pairs which will be recognized by `<BS>` and `<CR>`.
---
---@param mode string: `mode` for |nvim_set_keymap()|.
---@param lhs string: `lhs` for |nvim_set_keymap()|.
---@param pair_info table: Table with pair information.
---@param opts table: Optional table `opts` for |nvim_set_keymap()|. Elements `expr` and `noremap` won't be recognized (`true` by default).
function MiniPairs.map(mode, lhs, pair_info, opts)
pair_info = H.ensure_pair_info(pair_info)
opts = vim.tbl_deep_extend('force', opts or {}, { expr = true, noremap = true })
vim.api.nvim_set_keymap(mode, lhs, H.pair_info_to_map_rhs(pair_info), opts)
H.register_pair(pair_info, mode, 'all')
end
--- Make buffer mapping
---
--- This is similar to |nvim_buf_set_keymap()| but instead of string right hand
--- side of mapping it expects table with pair information similar to one in
--- |MiniPairs.map|.
---
--- Using this function instead of |nvim_buf_set_keymap()| allows automatic
--- registration of pairs which will be recognized by `<BS>` and `<CR>`.
---
---@param mode string: `mode` for |nvim_buf_set_keymap()|.
---@param lhs string: `lhs` for |nvim_buf_set_keymap()|.
---@param pair_info table: Table with pair information.
---@param opts table: Optional table `opts` for |nvim_buf_set_keymap()|. Elements `expr` and `noremap` won't be recognized (`true` by default).
function MiniPairs.map_buf(buffer, mode, lhs, pair_info, opts)
pair_info = H.ensure_pair_info(pair_info)
opts = vim.tbl_deep_extend('force', opts or {}, { expr = true, noremap = true })
vim.api.nvim_buf_set_keymap(buffer, mode, lhs, H.pair_info_to_map_rhs(pair_info), opts)
H.register_pair(pair_info, mode, buffer == 0 and vim.api.nvim_get_current_buf() or buffer)
end
--- Remove global mapping
---
--- Uses |nvim_del_keymap()| together with unregistering supplied `pair`.
---
---@param mode string: `mode` for |nvim_del_keymap()|.
---@param lhs string: `lhs` for |nvim_del_keymap()|.
---@param pair string: pair which should be unregistered. Supply `''` to not unregister pair.
function MiniPairs.unmap(mode, lhs, pair)
vim.api.nvim_del_keymap(mode, lhs)
if pair == nil then
vim.notify([[(mini.pairs) Supply `pair` argument to `MiniPairs.unmap`.]])
end
if (pair or '') ~= '' then
H.unregister_pair(pair, mode, 'all')
end
end
--- Remove buffer mapping
---
--- Uses |nvim_buf_del_keymap()| together with unregistering supplied `pair`.
---
---@param mode string: `mode` for |nvim_buf_del_keymap()|.
---@param lhs string: `lhs` for |nvim_buf_del_keymap()|.
---@param pair string: pair which should be unregistered. Supply `''` to not unregister pair.
function MiniPairs.unmap_buf(buffer, mode, lhs, pair)
vim.api.nvim_buf_del_keymap(buffer, mode, lhs)
if pair == nil then
vim.notify([[(mini.pairs) Supply `pair` argument to `MiniPairs.unmap_buf`.]])
end
if (pair or '') ~= '' then
H.unregister_pair(pair, mode, buffer == 0 and vim.api.nvim_get_current_buf() or buffer)
end
end
--- Process 'open' symbols
---
--- Used as |map-expr| mapping for 'open' symbols in asymmetric pair ('(', '[',
--- etc.). If neighborhood doesn't match supplied pattern, function results
--- into 'open' symbol. Otherwise, it pastes whole pair and moves inside pair
--- with |<Left>|.
---
--- Used inside |MiniPairs.map| and |MiniPairs.map_buf| for an actual mapping.
---
---@param pair string: String with two characters representing pair.
---@param neigh_pattern string: Pattern for two neighborhood characters ("\r" line start, "\n" - line end).
function MiniPairs.open(pair, neigh_pattern)
if H.is_disabled() or not H.neigh_match(neigh_pattern) then
return pair:sub(1, 1)
end
return ('%s%s'):format(pair, H.get_arrow_key('left'))
end
--- Process 'close' symbols
---
--- Used as |map-expr| mapping for 'close' symbols in asymmetric pair (')',
--- ']', etc.). If neighborhood doesn't match supplied pattern, function
--- results into 'close' symbol. Otherwise it jumps over symbol to the right of
--- cursor (with |<Right>|) if it is equal to 'close' one and inserts it
--- otherwise.
---
--- Used inside |MiniPairs.map| and |MiniPairs.map_buf| for an actual mapping.
---
---@param pair string: String with two characters representing pair.
---@param neigh_pattern string: Pattern for two neighborhood characters ("\r" line start, "\n" - line end).
function MiniPairs.close(pair, neigh_pattern)
if H.is_disabled() or not H.neigh_match(neigh_pattern) then
return pair:sub(2, 2)
end
local close = pair:sub(2, 2)
if H.get_cursor_neigh(1, 1) == close then
return H.get_arrow_key('right')
else
return close
end
end
--- Process 'closeopen' symbols
---
--- Used as |map-expr| mapping for 'symmetrical' symbols (from pairs '""',
--- '\'\'', '``'). It tries to perform 'closeopen action': move over right
--- character (with |<Right>|) if it is equal to second character from pair or
--- conditionally paste pair otherwise (with |MiniPairs.open()|).
---
--- Used inside |MiniPairs.map| and |MiniPairs.map_buf| for an actual mapping.
---
---@param pair string: String with two characters representing pair.
---@param neigh_pattern string: Pattern for two neighborhood characters ("\r" line start, "\n" - line end).
function MiniPairs.closeopen(pair, neigh_pattern)
if H.is_disabled() or not (H.get_cursor_neigh(1, 1) == pair:sub(2, 2)) then
return MiniPairs.open(pair, neigh_pattern)
else
return H.get_arrow_key('right')
end
end
--- Process |<BS>|
---
--- Used as |map-expr| mapping for `<BS>`. It removes whole pair (via
--- `<BS><Del>`) if neighborhood is equal to a whole pair recognized for
--- current buffer. Pair is recognized for current buffer if it is registered
--- for global or current buffer mapping. Pair is registered as a result of
--- calling |MiniPairs.map| or |MiniPairs.map_buf|.
---
--- Mapped by default inside |MiniPairs.setup|.
function MiniPairs.bs(pair_set)
-- TODO: remove `pair_set` argument
if pair_set ~= nil and not H.showed_deprecation then
vim.notify(table.concat({
'(mini.pairs)',
[[`pair_set` arugment in both `MiniPairs.bs()` and `MiniPairs.cr()` is soft deprecated.]],
[[It is no longer needed due to the mechanism of pairs registration inside new mapping functions.]],
[[See `:h MiniPairs.map()` and `:h MiniPairs.map_buf()`.]],
[[It will be removed in the future. Sorry for this.]],
}, ' '))
H.showed_deprecation = true
end
local res = H.keys.bs
local neigh = H.get_cursor_neigh(0, 1)
if not H.is_disabled() and H.is_pair_registered(neigh, vim.fn.mode(), 0, 'bs') then
res = ('%s%s'):format(res, H.keys.del)
end
return res
end
--- Process |i_<CR>|
---
--- Used as |map-expr| mapping for `<CR>` in insert mode. It puts "close"
--- symbol on next line (via `<CR><C-o>O`) if neighborhood is equal to a whole
--- pair recognized for current buffer. Pair is recognized for current buffer
--- if it is registered for global or current buffer mapping. Pair is
--- registered as a result of calling |MiniPairs.map| or |MiniPairs.map_buf|.
---
--- Mapped by default inside |MiniPairs.setup|.
function MiniPairs.cr(pair_set)
-- TODO: remove `pair_set` argument
if pair_set ~= nil and not H.showed_deprecation then
vim.notify(table.concat({
'(mini.pairs)',
[[`pair_set` arugment in both `MiniPairs.bs()` and `MiniPairs.cr()` is soft deprecated.]],
[[It is no longer needed due to the mechanism of pairs registration inside new mapping functions.]],
[[See `:h MiniPairs.map()` and `:h MiniPairs.map_buf()`.]],
[[It will be removed in the future. Sorry for this.]],
}, ' '))
H.showed_deprecation = true
end
local res = H.keys.cr
local neigh = H.get_cursor_neigh(0, 1)
if not H.is_disabled() and H.is_pair_registered(neigh, vim.fn.mode(), 0, 'cr') then
res = ('%s%s'):format(res, H.keys.above)
end
return res
end
-- Helpers --
-- Module default config
H.default_config = MiniPairs.config
-- Default value of `pair_info` for mapping functions
H.default_pair_info = { neigh_pattern = '..', register = { bs = true, cr = true } }
-- Pair sets registered *per mode-buffer-key*. Buffer `'all'` contains pairs
-- registered for all buffers.
H.registered_pairs = {
i = { all = { bs = {}, cr = {} } },
c = { all = { bs = {}, cr = {} } },
t = { all = { bs = {}, cr = {} } },
}
-- Deprecation indication. TODO: remove when there is not deprecation.
H.showed_deprecation = false
-- Precomputed keys to increase speed
-- stylua: ignore start
local function escape(s) return vim.api.nvim_replace_termcodes(s, true, true, true) end
H.keys = {
above = escape('<C-o>O'),
bs = escape('<bs>'),
cr = escape('<cr>'),
del = escape('<del>'),
keep_undo = escape('<C-g>U'),
-- NOTE: use `get_arrow_key()` instead of `H.keys.left` or `H.keys.right`
left = escape('<left>'),
right = escape('<right>')
}
-- stylua: ignore end
-- Settings
function H.setup_config(config)
-- General idea: if some table elements are not present in user-supplied
-- `config`, take them from default config
vim.validate({ config = { config, 'table', true } })
config = vim.tbl_deep_extend('force', H.default_config, config or {})
vim.validate({
modes = { config.modes, 'table' },
['modes.insert'] = { config.modes.insert, 'boolean' },
['modes.command'] = { config.modes.command, 'boolean' },
['modes.terminal'] = { config.modes.terminal, 'boolean' },
mappings = { config.mappings, 'table' },
})
return config
end
function H.apply_config(config)
MiniPairs.config = config
-- Setup mappings in supplied modes
local mode_ids = { insert = 'i', command = 'c', terminal = 't' }
---- Compute in which modes mapping should be set up
local mode_array = {}
for name, to_set in pairs(config.modes) do
if to_set then
table.insert(mode_array, mode_ids[name])
end
end
for _, mode in pairs(mode_array) do
for key, pair_info in pairs(config.mappings) do
MiniPairs.map(mode, key, pair_info)
end
vim.api.nvim_set_keymap(mode, '<BS>', [[v:lua.MiniPairs.bs()]], { expr = true, noremap = true })
if mode == 'i' then
vim.api.nvim_set_keymap('i', '<CR>', [[v:lua.MiniPairs.cr()]], { expr = true, noremap = true })
end
end
end
function H.is_disabled()
return vim.g.minipairs_disable == true or vim.b.minipairs_disable == true
end
-- Pair registration --
function H.register_pair(pair_info, mode, buffer)
-- Process new mode
H.registered_pairs[mode] = H.registered_pairs[mode] or { all = { bs = {}, cr = {} } }
local mode_pairs = H.registered_pairs[mode]
-- Process new buffer
mode_pairs[buffer] = mode_pairs[buffer] or { bs = {}, cr = {} }
-- Register pair if it is not already registered
local register, pair = pair_info.register, pair_info.pair
if register.bs and not vim.tbl_contains(mode_pairs[buffer].bs, pair) then
table.insert(mode_pairs[buffer].bs, pair)
end
if register.cr and not vim.tbl_contains(mode_pairs[buffer].cr, pair) then
table.insert(mode_pairs[buffer].cr, pair)
end
end
function H.unregister_pair(pair, mode, buffer)
local mode_pairs = H.registered_pairs[mode]
if not (mode_pairs and mode_pairs[buffer]) then
return
end
local buf_pairs = mode_pairs[buffer]
for _, key in ipairs({ 'bs', 'cr' }) do
for i, p in ipairs(buf_pairs[key]) do
if p == pair then
table.remove(buf_pairs[key], i)
break
end
end
end
end
function H.is_pair_registered(pair, mode, buffer, key)
local mode_pairs = H.registered_pairs[mode]
if not mode_pairs then
return false
end
if vim.tbl_contains(mode_pairs['all'][key], pair) then
return true
end
buffer = buffer == 0 and vim.api.nvim_get_current_buf() or buffer
local buf_pairs = mode_pairs[buffer]
if not buf_pairs then
return false
end
return vim.tbl_contains(buf_pairs[key], pair)
end
-- Work with pair_info --
function H.ensure_pair_info(pair_info)
vim.validate({ pair_info = { pair_info, 'table' } })
pair_info = vim.tbl_deep_extend('force', H.default_pair_info, pair_info)
vim.validate({
action = { pair_info.action, 'string' },
pair = { pair_info.pair, 'string' },
neigh_pattern = { pair_info.neigh_pattern, 'string' },
register = { pair_info.register, 'table' },
['register.bs'] = { pair_info.register.bs, 'boolean' },
['register.cr'] = { pair_info.register.cr, 'boolean' },
})
return pair_info
end
function H.pair_info_to_map_rhs(pair_info)
return ('v:lua.MiniPairs.%s(%s, %s)'):format(
pair_info.action,
vim.inspect(pair_info.pair),
vim.inspect(pair_info.neigh_pattern)
)
end
-- Various helpers
function H.map(mode, key, command)
vim.api.nvim_set_keymap(mode, key, command, { expr = true, noremap = true })
end
function H.get_cursor_neigh(start, finish)
local line, col
if vim.fn.mode() == 'c' then
line = vim.fn.getcmdline()
col = vim.fn.getcmdpos()
-- Adjust start and finish because output of `getcmdpos()` starts counting
-- columns from 1
start = start - 1
finish = finish - 1
else
line = vim.api.nvim_get_current_line()
col = vim.api.nvim_win_get_cursor(0)[2]
end
-- Add '\r' and '\n' to always return 2 characters
return string.sub(('%s%s%s'):format('\r', line, '\n'), col + 1 + start, col + 1 + finish)
end
function H.neigh_match(pattern)
return (pattern == nil) or (H.get_cursor_neigh(0, 1):find(pattern) ~= nil)
end
function H.get_arrow_key(key)
if vim.fn.mode() == 'i' then
-- Using left/right keys in insert mode breaks undo sequence and, more
-- importantly, dot-repeat. To avoid this, use 'i_CTRL-G_U' mapping.
return H.keys.keep_undo .. H.keys[key]
else
return H.keys[key]
end
end
return MiniPairs