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@ -43,25 +43,23 @@ end
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function Pos.invalid() return Pos.new(0, 0, 0, 0) end
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function Pos.is(x) return getmetatable(x) == Pos end
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function Pos.__lt(a, b) return a.lnum < b.lnum or (a.lnum == b.lnum and a.col < b.col) end
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function Pos.__le(a, b) return a < b or a == b end
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function Pos.__eq(a, b)
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return Pos.is(a) and Pos.is(b) and a.bufnr == b.bufnr and a.lnum == b.lnum and a.col == b.col
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return getmetatable(a) == Pos and getmetatable(b) == Pos and a.bufnr == b.bufnr and a.lnum == b.lnum and a.col == b.col
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end
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function Pos.__add(x, y)
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if type(x) == 'number' then
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x, y = y, x
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end
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if not Pos.is(x) or type(y) ~= 'number' then return nil end
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if getmetatable(x) ~= Pos or type(y) ~= 'number' then return nil end
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return x:next(y)
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end
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function Pos.__sub(x, y)
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if type(x) == 'number' then
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x, y = y, x
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end
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if not Pos.is(x) or type(y) ~= 'number' then return nil end
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if getmetatable(x) ~= Pos or type(y) ~= 'number' then return nil end
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return x:next(-y)
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end
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187
lua/u/range.lua
187
lua/u/range.lua
@ -1,5 +1,10 @@
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--- @module
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--- @brief Utilities for manipulating ranges of text.
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local Pos = require 'u.pos'
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-- Certain functions in the Range class yank text. In order to prevent unwanted
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-- highlighting, we intercept and discard some calls to the `on_yank` callback.
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local orig_on_yank = (vim.hl or vim.highlight).on_yank
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local on_yank_enabled = true;
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((vim.hl or vim.highlight) --[[@as any]]).on_yank = function(opts)
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@ -36,6 +41,10 @@ function Range.__tostring(self)
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)
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end
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--------------------------------------------------------------------------------
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-- Range constructors:
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--------------------------------------------------------------------------------
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--- @param start u.Pos
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--- @param stop u.Pos|nil
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--- @param mode? 'v'|'V'
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@ -51,7 +60,20 @@ function Range.new(start, stop, mode)
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return r
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end
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function Range.is(x) return getmetatable(x) == Range end
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--- @param ranges (u.Range|nil)[]
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function Range.smallest(ranges)
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--- @type u.Range[]
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ranges = vim.iter(ranges):filter(function(r) return r ~= nil and not r:is_empty() end):totable()
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if #ranges == 0 then return nil end
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-- find smallest match
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local smallest = ranges[1]
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for _, r in ipairs(ranges) do
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local start, stop = r.start, r.stop
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if start > smallest.start and stop < smallest.stop then smallest = r end
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end
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return smallest
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end
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--- @param lpos string
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--- @param rpos string
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@ -221,7 +243,6 @@ function Range.from_cmd_args(args)
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return Range.new(start, stop, mode)
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end
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---
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function Range.find_nearest_brackets()
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return Range.smallest {
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Range.from_motion('a<', { contains_cursor = true }),
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@ -239,28 +260,15 @@ function Range.find_nearest_quotes()
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}
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end
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--- @param ranges (u.Range|nil)[]
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function Range.smallest(ranges)
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--- @type u.Range[]
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ranges = vim.iter(ranges):filter(function(r) return r ~= nil and not r:is_empty() end):totable()
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if #ranges == 0 then return nil end
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-- find smallest match
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local smallest = ranges[1]
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for _, r in ipairs(ranges) do
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local start, stop = r.start, r.stop
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if start > smallest.start and stop < smallest.stop then smallest = r end
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end
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return smallest
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end
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--------------------------------------------------------------------------------
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-- Structural utilities:
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--------------------------------------------------------------------------------
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function Range:clone()
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return Range.new(self.start:clone(), self.stop ~= nil and self.stop:clone() or nil, self.mode)
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end
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function Range:line_count()
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if self:is_empty() then return 0 end
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return self.stop.lnum - self.start.lnum + 1
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end
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function Range:is_empty() return self.stop == nil end
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function Range:to_linewise()
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local r = self:clone()
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@ -272,32 +280,6 @@ function Range:to_linewise()
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return r
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end
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function Range:is_empty() return self.stop == nil end
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function Range:trim_start()
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if self:is_empty() then return end
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local r = self:clone()
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while r.start:char():match '%s' do
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local next = r.start:next(1)
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if next == nil then break end
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r.start = next
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end
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return r
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end
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function Range:trim_stop()
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if self:is_empty() then return end
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local r = self:clone()
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while r.stop:char():match '%s' do
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local next = r.stop:next(-1)
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if next == nil then break end
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r.stop = next
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end
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return r
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end
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--- @param x u.Pos | u.Range
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function Range:contains(x)
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if getmetatable(x) == Pos then
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@ -336,6 +318,52 @@ function Range:difference(other)
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return left, right
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end
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--- @param left string
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--- @param right string
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function Range:save_to_pos(left, right)
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if self:is_empty() then
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self.start:save_to_pos(left)
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self.start:save_to_pos(right)
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else
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self.start:save_to_pos(left)
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self.stop:save_to_pos(right)
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end
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end
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--- @param left string
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--- @param right string
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function Range:save_to_marks(left, right)
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if self:is_empty() then
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self.start:save_to_mark(left)
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self.start:save_to_mark(right)
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else
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self.start:save_to_mark(left)
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self.stop:save_to_mark(right)
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end
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end
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function Range:set_visual_selection()
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if self:is_empty() then return end
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if vim.api.nvim_get_current_buf() ~= self.start.bufnr then
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error 'Range:set_visual_selection() called on a buffer other than the current buffer'
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end
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local curr_mode = vim.fn.mode()
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if curr_mode ~= self.mode then vim.cmd.normal { args = { self.mode }, bang = true } end
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self.start:save_to_pos '.'
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vim.cmd.normal { args = { 'o' }, bang = true }
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self.stop:save_to_pos '.'
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end
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--------------------------------------------------------------------------------
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-- Range.from_* functions:
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--------------------------------------------------------------------------------
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--------------------------------------------------------------------------------
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-- Text access/manipulation utilities:
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--------------------------------------------------------------------------------
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function Range:length()
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if self:is_empty() then return 0 end
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@ -353,6 +381,35 @@ function Range:length()
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return len
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end
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function Range:line_count()
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if self:is_empty() then return 0 end
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return self.stop.lnum - self.start.lnum + 1
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end
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function Range:trim_start()
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if self:is_empty() then return end
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local r = self:clone()
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while r.start:char():match '%s' do
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local next = r.start:next(1)
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if next == nil then break end
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r.start = next
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end
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return r
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end
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function Range:trim_stop()
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if self:is_empty() then return end
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local r = self:clone()
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while r.stop:char():match '%s' do
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local next = r.stop:next(-1)
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if next == nil then break end
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r.stop = next
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end
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return r
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end
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--- @param i number 1-based
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--- @param j? number 1-based
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function Range:sub(i, j)
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@ -507,44 +564,6 @@ function Range:must_shrink(amount)
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return shrunk
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end
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--- @param left string
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--- @param right string
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function Range:save_to_pos(left, right)
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if self:is_empty() then
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self.start:save_to_pos(left)
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self.start:save_to_pos(right)
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else
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self.start:save_to_pos(left)
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self.stop:save_to_pos(right)
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end
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end
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--- @param left string
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--- @param right string
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function Range:save_to_marks(left, right)
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if self:is_empty() then
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self.start:save_to_mark(left)
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self.start:save_to_mark(right)
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else
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self.start:save_to_mark(left)
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self.stop:save_to_mark(right)
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end
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end
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function Range:set_visual_selection()
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if self:is_empty() then return end
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if vim.api.nvim_get_current_buf() ~= self.start.bufnr then
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error 'Range:set_visual_selection() called on a buffer other than the current buffer'
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end
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local curr_mode = vim.fn.mode()
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if curr_mode ~= self.mode then vim.cmd.normal { args = { self.mode }, bang = true } end
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self.start:save_to_pos '.'
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vim.cmd.normal { args = { 'o' }, bang = true }
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self.stop:save_to_pos '.'
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end
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--- @param group string
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--- @param opts? { timeout?: number, priority?: number, on_macro?: boolean }
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function Range:highlight(group, opts)
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