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https://github.com/neovim/neovim.git
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274a3504a7
Resolve an issue with deferred clearing of highlight failing if the buffer is deleted before the timeout by checking whether the buffer is valid first.
98 lines
3.3 KiB
Lua
98 lines
3.3 KiB
Lua
local api = vim.api
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local highlight = {}
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---@private
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function highlight.create(higroup, hi_info, default)
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local options = {}
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-- TODO: Add validation
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for k, v in pairs(hi_info) do
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table.insert(options, string.format("%s=%s", k, v))
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end
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vim.cmd(string.format([[highlight %s %s %s]], default and "default" or "", higroup, table.concat(options, " ")))
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end
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---@private
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function highlight.link(higroup, link_to, force)
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vim.cmd(string.format([[highlight%s link %s %s]], force and "!" or " default", higroup, link_to))
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end
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--- Highlight range between two positions
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---
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---@param bufnr number of buffer to apply highlighting to
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---@param ns namespace to add highlight to
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---@param higroup highlight group to use for highlighting
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---@param rtype type of range (:help setreg, default charwise)
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---@param inclusive boolean indicating whether the range is end-inclusive (default false)
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function highlight.range(bufnr, ns, higroup, start, finish, rtype, inclusive)
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rtype = rtype or 'v'
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inclusive = inclusive or false
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-- sanity check
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if start[2] < 0 or finish[1] < start[1] then return end
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local region = vim.region(bufnr, start, finish, rtype, inclusive)
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for linenr, cols in pairs(region) do
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api.nvim_buf_add_highlight(bufnr, ns, higroup, linenr, cols[1], cols[2])
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end
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end
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local yank_ns = api.nvim_create_namespace('hlyank')
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--- Highlight the yanked region
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---
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--- use from init.vim via
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--- au TextYankPost * lua vim.highlight.on_yank()
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--- customize highlight group and timeout via
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--- au TextYankPost * lua vim.highlight.on_yank {higroup="IncSearch", timeout=150}
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--- customize conditions (here: do not highlight a visual selection) via
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--- au TextYankPost * lua vim.highlight.on_yank {on_visual=false}
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---
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-- @param opts dictionary with options controlling the highlight:
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-- - higroup highlight group for yanked region (default "IncSearch")
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-- - timeout time in ms before highlight is cleared (default 150)
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-- - on_macro highlight when executing macro (default false)
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-- - on_visual highlight when yanking visual selection (default true)
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-- - event event structure (default vim.v.event)
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function highlight.on_yank(opts)
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vim.validate {
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opts = { opts,
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function(t) if t == nil then return true else return type(t) == 'table' end end,
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'a table or nil to configure options (see `:h highlight.on_yank`)',
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}}
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opts = opts or {}
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local event = opts.event or vim.v.event
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local on_macro = opts.on_macro or false
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local on_visual = (opts.on_visual ~= false)
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if (not on_macro) and vim.fn.reg_executing() ~= '' then return end
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if event.operator ~= 'y' or event.regtype == '' then return end
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if (not on_visual) and event.visual then return end
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local higroup = opts.higroup or "IncSearch"
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local timeout = opts.timeout or 150
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local bufnr = api.nvim_get_current_buf()
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api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1)
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local pos1 = vim.fn.getpos("'[")
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local pos2 = vim.fn.getpos("']")
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pos1 = {pos1[2] - 1, pos1[3] - 1 + pos1[4]}
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pos2 = {pos2[2] - 1, pos2[3] - 1 + pos2[4]}
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highlight.range(bufnr, yank_ns, higroup, pos1, pos2, event.regtype, event.inclusive)
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vim.defer_fn(
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function()
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if api.nvim_buf_is_valid(bufnr) then
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api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1)
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end
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end,
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timeout
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)
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end
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return highlight
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