mini.nvim/lua/mini/move.lua at main · krig/mini.nvim

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--- *mini.move* Move any selection in any direction

--- *MiniMove*

---

--- ==============================================================================

---

--- Features:

--- - Works in two modes:

--- - Visual mode. Select text (charwise with |v|, linewise with |V|, and

--- blockwise with |CTRL-V|) and press customizable mapping to move in

--- all four directions (left, right, down, up). It keeps Visual mode.

--- - Normal mode. Press customizable mapping to move current line in all

--- four directions (left, right, down, up).

--- - Special handling of linewise movement:

--- - Vertical movement gets reindented with |=|.

--- - Horizontal movement is improved indent/dedent with |>| / |<|.

--- - Cursor moves along with selection.

---

--- - Provides both mappings and Lua functions for motions. See

--- |MiniMove.move_selection()| and |MiniMove.move_line()|.

---

--- - Respects |v:count|. Movement mappings can be preceded by a number which

--- multiplies command effect.

---

--- - All consecutive moves (regardless of direction) can be undone by a single |u|.

---

--- - Respects preferred column for vertical movement. It will vertically move

--- selection as how cursor is moving (not strictly vertically if target

--- column is not present in target line).

---

--- Notes:

--- - Doesn't allow moving selection outside of current lines (by design).

---

--- # Setup ~

---

--- This module needs a setup with `require('mini.move').setup({})` (replace

--- `{}` with your `config` table). It will create global Lua table `MiniMove`

--- which you can use for scripting or manually (with `:lua MiniMove.*`).

---

--- See |MiniMove.config| for available config settings.

---

--- You can override runtime config settings (but not `config.mappings`) locally

--- to buffer inside `vim.b.minimove_config` which should have same structure

--- as `MiniMove.config`. See |mini.nvim-buffer-local-config| for more details.

---

--- # Comparisons ~

---

--- - 'matze/vim-move':

--- - Doesn't support vertical movement of charwise and blockwise selections.

--- While 'mini.move' does.

--- - Doesn't support horizontal movement of current line in favor of

--- horizontal movement of current character. While 'mini.move' supports

--- horizontal movement of current line and doesn't support such movement

--- of current character.

--- - Has extra functionality for certain moves (like move by half page).

--- While 'mini.move' does not (by design).

--- - 'booperlv/nvim-gomove':

--- - Doesn't support movement in charwise visual selection.

--- While 'mini.move' does.

--- - Has extra functionality beyond moving text, like duplication.

--- While 'mini.move' concentrates only on moving functionality.

---

--- # Disabling ~

---

--- To disable, set `vim.g.minimove_disable` (globally) or `vim.b.minimove_disable`

--- (for a buffer) to `true`. Considering high number of different scenarios

--- and customization intentions, writing exact rules for disabling module's

--- functionality is left to user. See |mini.nvim-disabling-recipes| for common

--- recipes.

---@alias __move_direction string One of "left", "down", "up", "right".

---@alias __move_opts table|nil Options. Same structure as `options` in |MiniMove.config|

--- (with its values as defaults) plus these allowed extra fields:

--- - <n_times> (number) - number of times to try to make a move.

--- Default: |v:count1|.

---@diagnostic disable:undefined-field

-- Module definition ==========================================================

local MiniMove = {}

local H = {}

--- Module setup

---

---@param config table|nil Module config table. See |MiniMove.config|.

---

---@usage >lua

--- require('mini.move').setup() -- use default config

--- -- OR

--- require('mini.move').setup({}) -- replace {} with your config table

--- <

MiniMove.setup = function(config)

-- Export module

_G.MiniMove = MiniMove

-- Setup config

config = H.setup_config(config)

-- Apply config

H.apply_config(config)

end

--- Module config

---

--- Default values:

---@eval return MiniDoc.afterlines_to_code(M 8000 iniDoc.current.eval_section)

---@text # Mappings ~

---

--- Other possible choices of mappings: >lua

---

--- -- `HJKL` for moving visual selection (overrides H, L, J in Visual mode)

--- require('mini.move').setup({

--- mappings = {

--- left = 'H',

--- right = 'L',

--- down = 'J',

--- up = 'K',

--- }

--- })

---

--- -- Shift + arrows

--- require('mini.move').setup({

--- mappings = {

--- left = '<S-left>',

--- right = '<S-right>',

--- down = '<S-down>',

--- up = '<S-up>',

---

--- line_left = '<S-left>',

--- line_right = '<S-right>',

--- line_down = '<S-down>',

--- line_up = '<S-up>',

--- }

--- })

--- <

MiniMove.config = {

-- Module mappings. Use `''` (empty string) to disable one.

mappings = {

-- Move visual selection in Visual mode. Defaults are Alt (Meta) + hjkl.

left = '<M-h>',

right = '<M-l>',

down = '<M-j>',

up = '<M-k>',

-- Move current line in Normal mode

line_left = '<M-h>',

line_right = '<M-l>',

line_down = '<M-j>',

line_up = '<M-k>',

-- Options which control moving behavior

options = {

-- Automatically reindent selection during linewise vertical move

reindent_linewise = true,

}

--minidoc_afterlines_end

-- Module functionality =======================================================

--- Move visually selected region in any direction within present lines

---

--- Main function powering visual selection move in Visual mode.

---

--- Notes:

--- - Vertical movement in linewise mode is followed up by reindent with |v_=|.

--- - Horizontal movement in linewise mode is same as |v_<| and |v_>|.

---

---@param direction __move_direction

---@param opts __move_opts

MiniMove.move_selection = function(direction, opts)

if H.is_disabled() or not vim.o.modifiable then return end

opts = vim.tbl_deep_extend('force', H.get_config().options, opts or {})

-- This could have been a one-line expression mappings, but there are issues:

-- - Initial yanking modifies some register. Not critical, but also not good.

-- - Doesn't work at movement edges (first line for `K`, etc.). See

-- https://github.com/vim/vim/issues/11786

-- - Results into each movement being a separate undo block, which is

-- inconvenient with several back-to-back movements.

local cur_mode = vim.fn.mode()

-- Act only inside visual mode

if not (cur_mode == 'v' or cur_mode == 'V' or cur_mode == '\22') then return end

-- Define common predicates

local dir_type = (direction == 'up' or direction == 'down') and 'vert' or 'hori'

local is_linewise = cur_mode == 'V'

-- Make early return in small buffer

if vim.api.nvim_buf_line_count(0) == 1 then

if is_linewise and dir_type == 'vert' then return end

if not is_linewise and vim.fn.getline(1):len() == 0 then return end

end

-- Cache useful data because it will be reset when executing commands

local n_times = opts.n_times or vim.v.count1

local ref_curpos, ref_last_col = vim.fn.getcurpos(), vim.fn.col('$')

local is_cursor_on_selection_start = vim.fn.line('.') < vim.fn.line('v')

-- Determine if previous action was this type of move

local is_moving = vim.deep_equal(H.state, H.get_move_state())

if not is_moving then H.curswant = nil end

-- Allow undo of consecutive moves at once (direction doesn't matter)

local cmd = H.make_cmd_normal(is_moving)

-- Treat horizontal linewise movement specially

if is_linewise and dir_type == 'hori' then

-- Use indentation as horizontal movement for linewise selection

cmd(n_times .. H.indent_keys[direction] .. 'gv')

-- Make cursor move along selection

H.correct_cursor_col(ref_curpos, ref_last_col)

-- Track new state to allow joining in single undo block

H.state = H.get_move_state()

return

end

-- Temporarily ensure possibility to put cursor just after line end.

-- This allows a more intuitive cursor positioning from and to end of line.

-- NOTE: somehow, this should be done before initial cut to take effect.

local cache_virtualedit = vim.o.virtualedit

if not cache_virtualedit:find('all') then vim.o.virtualedit = 'onemore' end

-- Cut selection while saving caching register

local cache_z_reg = vim.fn.getreginfo('z')

-- - Don't use `"zx` directly to not affect registers 1-9

< 8000 div id="LC233" class="react-file-line html-div" data-testid="code-cell" data-line-number="233" style="position:relative"> cmd('"zygv"_x')

-- Detect edge selection: last line(s) for vertical and last character(s)

-- for horizontal. At this point (after cutting selection) cursor is on the

-- edge which can happen in two cases:

-- - Move second to last selection towards edge (like in 'abc' move 'b'

-- to right or second to last line down).

-- - Move edge selection away from edge (like in 'abc' move 'c' to left

-- or last line up).

-- Use condition that removed selection was further than current cursor

-- to distinguish between two cases.

local is_edge_selection_hori = dir_type == 'hori' and vim.fn.col('.') < vim.fn.col("'<")

local is_edge_selection_vert = dir_type == 'vert' and vim.fn.line('.') < vim.fn.line("'<")

local is_edge_selection = is_edge_selection_hori or is_edge_selection_vert

-- Use `p` as paste key instead of `P` in cases which might require moving

-- selection to place which is unreachable with `P`: right to be line end

-- and down to be last line. NOTE: temporary `virtualedit=onemore` solves

-- this only for horizontal movement, but not for vertical.

local can_go_overline = not is_linewise and direction == 'right'

local can_go_overbuf = is_linewise and direction == 'down'

local paste_key = (can_go_overline or can_go_overbuf) and 'p' or 'P'

-- Restore `curswant` to try move cursor to initial column (just like

-- default `hjkl` moves)

if dir_type == 'vert' then H.set_curswant(H.curswant) end

-- Possibly reduce number of moves by one to not overshoot move

local n = n_times - ((paste_key == 'p' or is_edge_selection) and 1 or 0)

-- Don't allow movement past last line of block selection (any part)

if cur_mode == '\22' and direction == 'down' and vim.fn.line('$') == vim.fn.line("'>") then n = 0 end

-- Move cursor

if n > 0 then cmd(n .. H.move_keys[direction]) end

-- Save curswant. Correct for one less move when using `p` as paste.

H.curswant = H.get_curswant() + ((direction == 'right' and paste_key == 'p') and 1 or 0)

-- Open just enough folds (but not in linewise mode, as it allows moving

-- past folds)

if not is_linewise then cmd('zv') end

-- Paste

cmd('"z' .. paste_key)

-- Select newly moved region. Another way is to use something like `gvhoho`

-- but it doesn't work well with selections spanning several lines.

cmd('`[1v')

-- Do extra in case of linewise selection

if is_linewise then

-- Reindent linewise selection if `=` can do that.

-- NOTE: this sometimes doesn't work well with folds (and probably

-- `foldmethod=indent`) and linewise mode because it recomputes folds after

-- that and the whole "move past fold" doesn't work.

if opts.reindent_linewise and dir_type == 'vert' and vim.o.equalprg == '' then cmd('=gv') end

-- Move cursor along the selection. NOTE: do this *after* reindent to

-- account for its effect.

-- - Ensure that cursor is on the right side of selection

if is_cursor_on_selection_start then cmd('o') end

H.correct_cursor_col(ref_curpos, ref_last_col)

end

-- Restore intermediate values

vim.fn.setreg('z', cache_z_reg)

vim.o.virtualedit = cache_virtualedit

-- Track new state to allow joining in single undo block

H.state = H.get_move_state()

end

--- Move current line in any direction

---

--- Main function powering current line move in Normal mode.

---

--- Notes:

--- - Vertical movement is followed up by reindent with |v_=|.

--- - Horizontal movement is almost the same as |<<| and |>>| with a different

--- handling of |v:count| (multiplies shift effect instead of modifying that

--- number of lines).

---

---@param direction __move_direction

---@param opts __move_opts

MiniMove.move_line = function(direction, opts)

if H.is_disabled() or not vim.o.modifiable then return end

if vim.api.nvim_buf_line_count(0) == 1 and (direction == 'down' or direction == 'up') then return end

opts = vim.tbl_deep_extend('force', H.get_config().options, opts or {})

-- Determine if previous action was this type of move

local is_moving = vim.deep_equal(H.state, H.get_move_state())

-- Allow undo of consecutive moves at once (direction doesn't matter)

local cmd = H.make_cmd_normal(is_moving)

-- Cache useful data because it will be reset when executing commands

local n_times = opts.n_times or vim.v.count1

local is_last_line_up = direction == 'up' and vim.fn.line('.') == vim.fn.line('$')

local ref_curpos, ref_last_col = vim.fn.getcurpos(), vim.fn.col('$')

if direction == 'left' or direction == 'right' then

-- Use indentation as horizontal movement. Explicitly call `count1` because

-- `<`/`>` use `v:count` to define number of lines.

-- Go to first non-blank at the end.

local key = H.indent_keys[direction]

cmd(string.rep(key .. key, n_times))

-- Make cursor move along selection

H.correct_cursor_col(ref_curpos, ref_last_col)

-- Track new state to allow joining in single undo block

H.state = H.get_move_state()

return

end

-- Cut current line while saving caching register

local cache_z_reg = vim.fn.getreginfo('z')

-- - Don't use `"zdd` directly to not affect registers 1-9

cmd('"zyy"_dd')

-- Move cursor

local paste_key = direction == 'up' and 'P' or 'p'

local n = n_times - ((paste_key == 'p' or is_last_line_up) and 1 or 0)

if n > 0 then cmd(n .. H.move_keys[direction]) end

-- Paste

cmd('"z' .. paste_key)

-- Reindent and put cursor on first non-blank

if opts.reindent_linewise and vim.o.equalprg == '' then cmd('==') end

-- Move cursor along the selection. NOTE: do this *after* reindent to

-- account for its effect.

H.correct_cursor_col(ref_curpos, ref_last_col)

-- Restore intermediate values

vim.fn.setreg('z', cache_z_reg)

-- Track new state to allow joining in single undo block

H.state = H.get_move_state()

end

-- Helper data ================================================================

-- Module default config

H.default_config = vim.deepcopy(MiniMove.config)

H.move_keys = { left = 'h', down = 'j', up = 'k', right = 'l' }

H.indent_keys = { left = '<', right = '>' }

-- Moving state used to decide when to start new undo block ...

H.state = {

-- ... on buffer change

buf_id = nil,

-- ... on text change

changedtick = nil,

-- ... on cursor move

cursor = nil,

-- ... on mode change

mode = nil,

}

H.curswant = nil

-- Helper functionality =======================================================

-- Settings -------------------------------------------------------------------

H.setup_config = function(config)

H.check_type('config', config, 'table', true)

config = vim.tbl_deep_extend('force', vim.deepcopy(H.default_config), config or {})

H.check_type('mappings', config.mappings, 'table')

H.check_type('mappings.left', config.mappings.left, 'string')

H.check_type('mappings.down', config.mappings.down, 'string')

H.check_type('mappings.up', config.mappings.up, 'string')

H.check_type('mappings.right', config.mappings.right, 'string')

H.check_type('mappings.line_left', config.mappings.line_left, 'string')

H.check_type('mappings.line_right', config.mappings.line_right, 'string')

H.check_type('mappings.line_down', config.mappings.line_down, 'string')

H.check_type('mappings.line_up', config.mappings.line_up, 'string')

H.check_type('options', config.options, 'table')

H.check_type('options.reindent_linewise', config.options.reindent_linewise, 'boolean')

return config

end

--stylua: ignore

H.apply_config = function(config)

MiniMove.config = config

-- Make mappings

local maps = config.mappings

H.map('x', maps.left, [[<Cmd>lua MiniMove.move_selection('left')<CR>]], { desc = 'Move left' })

H.map('x', maps.right, [[<Cmd>lua MiniMove.move_selection('right')<CR>]], { desc = 'Move right' })

H.map('x', maps.down, [[<Cmd>lua MiniMove.move_selection('down')<CR>]], { desc = 'Move down' })

H.map('x', maps.up, [[<Cmd>lua MiniMove.move_selection('up')<CR>]], { desc = 'Move up' })

H.map('n', maps.line_left, [[<Cmd>lua MiniMove.move_line('left')<CR>]], { desc = 'Move line left' })

H.map('n', maps.line_right, [[<Cmd>lua MiniMove.move_line('right')<CR>]], { desc = 'Move line right' })

H.map('n', maps.line_down, [[<Cmd>lua MiniMove.move_line('down')<CR>]], { desc = 'Move line down' })

H.map('n', maps.line_up, [[<Cmd>lua MiniMove.move_line('up')<CR>]], { desc = 'Move line up' })

end

H.is_disabled = function() return vim.g.minimove_disable == true or vim.b.minimove_disable == true end

H.get_config = function(config)

return vim.tbl_deep_extend('force', MiniMove.config, vim.b.minimove_config or {}, config or {})

end

-- Utilities ------------------------------------------------------------------

H.error = function(msg) error('(mini.move) ' .. msg, 0) end

H.check_type = function(name, val, ref, allow_nil)

if type(val) == ref or (ref == 'callable' and vim.is_callable(val)) or (allow_nil and val == nil) then return end

H.error(string.format('`%s` should be %s, not %s', name, ref, type(val)))

end

H.map = function(mode, lhs, rhs, opts)

if lhs == '' then return end

opts = vim.tbl_deep_extend('force', { silent = true }, opts or {})

vim.keymap.set(mode, lhs, rhs, opts)

end

H.make_cmd_normal = function(include_undojoin)

local normal_command = (include_undojoin and 'undojoin | ' or '') .. 'silent keepjumps normal! '

return function(x)

-- Caching and restoring data on every command is not necessary but leads

-- to a nicer implementation

-- Disable 'mini.bracketed' to avoid unwanted entries to its yank history

local cache_minibracketed_disable = vim.b.minibracketed_disable

local cache_unnamed_register = { points_to = vim.fn.getreginfo('"').points_to }

-- Don't track possible put commands into yank history

vim.b.minibracketed_disable = true

vim.cmd(normal_command .. x)

vim.b.minibracketed_disable = cache_minibracketed_disable

vim.fn.setreg('"', cache_unnamed_register)

end

H.get_move_state = function()

return {

buf_id = vim.api.nvim_get_current_buf(),

changedtick = vim.b.changedtick,

cursor = vim.api.nvim_win_get_cursor(0),

mode = vim.fn.mode(),

}

end

H.correct_cursor_col = function(ref_curpos, ref_last_col)

-- Use `ref_curpos = getcurpos()` instead of `vim.api.nvim_win_get_cursor(0)`

-- allows to also account for `virtualedit=all`

local col_diff = vim.fn.col('$') - ref_last_col

local new_col = math.max(ref_curpos[3] + col_diff, 1)

vim.fn.cursor({ vim.fn.line('.'), new_col, ref_curpos[4], ref_curpos[5] + col_diff })

end

H.get_curswant = function() return vim.fn.winsaveview().curswant end

H.set_curswant = function(x)

if x == nil then return end

vim.fn.winrestview({ curswant = x })

end

return MiniMove

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