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https://github.com/neovim/neovim.git
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f2894bffb0
* add lua function to highlight yanked region * extract namespace, better naming, default values * add default for event argument * free timer * factor out mark to position calculation * d'oh * make sure timer stops before callback (cf. luv example) * factor out timer, more documentation * fixup * validate function argument for schedule * fix block selection past eol * correct handling of multibyte characters * move arguments around, some cleanup * move utility functions to vim.lua * use anonymous namespaces, avoid local api * rename function * add test for schedule_fn * fix indent * turn hl-yank into proper (hightlight) module * factor out position-to-region function mark extraction now part of highlight.on_yank * rename schedule_fn to defer_fn * add test for vim.region * todo: handle double-width characters * remove debug printout * do not shadow arguments * defer also callable table * whitespace change * move highlight to vim/highlight.lua * add documentation * add @return documentation * test: add check before vim.defer fires * doc: fixup
42 lines
1.3 KiB
Lua
42 lines
1.3 KiB
Lua
local api = vim.api
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local highlight = {}
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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 require'vim.highlight'.on_yank()
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--- customize highlight group and timeout via
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--- au TextYankPost * lua require'vim.highlight'.on_yank("IncSearch", 500)
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-- @param higroup highlight group for yanked region
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-- @param timeout time in ms before highlight is cleared
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-- @param event event structure
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function highlight.on_yank(higroup, timeout, event)
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event = event or vim.v.event
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if event.operator ~= 'y' or event.regtype == '' then return end
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higroup = higroup or "IncSearch"
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timeout = timeout or 500
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local bufnr = api.nvim_get_current_buf()
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local yank_ns = api.nvim_create_namespace('')
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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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local region = vim.region(bufnr, pos1, pos2, event.regtype, event.inclusive)
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for linenr, cols in pairs(region) do
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api.nvim_buf_add_highlight(bufnr, yank_ns, higroup, linenr, cols[1], cols[2])
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end
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vim.defer_fn(
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function() api.nvim_buf_clear_namespace(bufnr, yank_ns, 0, -1) 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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