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Add Treesitter extensions for better textobjects (#700)
This adds three plugins that use treesitters parsing to provide smarter text objects [ts_textobjects](https://github.com/nvim-treesitter/nvim-treesitter-textobjects) lets you define text objects for things like functions and classes [ts_textsubjects](https://github.com/RRethy/nvim-treesitter-textsubjects.git) defines a smart text object that selects a semantic block around the cursor [ts_hintobjects](https://github.com/mfussenegger/nvim-ts-hint-textobject) uses easymotion style hint labeling to show all the surrounding semantic blocks, letting you choose the correct one I have also added which-key entries for all the above Co-authored-by: Christian Chiarulli <chris.machine@pm.me>
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3 changed files with 154 additions and 10 deletions
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@ -30,6 +30,29 @@ O = {
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ignore_install = { "haskell" },
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highlight = { enabled = true },
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rainbow = { enabled = false },
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-- The below are for treesitter-textobjects plugin
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textobj_prefixes = {
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goto_next = "]", -- Go to next
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goto_previous = "[", -- Go to previous
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inner = "i", -- Select inside
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outer = "a", -- Selct around
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swap = "<leader>a", -- Swap with next
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},
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textobj_suffixes = {
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-- Start and End respectively for the goto keys
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-- for other keys it only uses the first
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["function"] = { "f", "F" },
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["class"] = { "m", "M" },
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["parameter"] = { "a", "A" },
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["block"] = { "k", "K" },
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["conditional"] = { "i", "I" },
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["call"] = { "c", "C" },
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["loop"] = { "l", "L" },
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["statement"] = { "s", "S" },
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["comment"] = { "/", "?" },
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},
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-- The below is for treesitter hint textobjects plugin
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hint_labels = { "h", "j", "f", "d", "n", "v", "s", "l", "a" },
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},
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lsp = {
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@ -46,6 +69,9 @@ O = {
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zen = { active = false },
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ts_playground = { active = false },
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ts_context_commentstring = { active = false },
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ts_hintobjects = { active = false },
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ts_textobjects = { active = false },
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ts_textsubjects = { active = false },
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telescope_fzy = { active = false },
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telescope_project = { active = false },
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indent_line = { active = false },
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@ -81,9 +107,6 @@ O = {
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sanegx = { active = false },
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snap = { active = false },
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tabnine = { active = false },
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},
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custom_plugins = {
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@ -1,6 +1,85 @@
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-- if not package.loaded['nvim-treesitter'] then
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-- return
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-- end
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-- if not package.loaded['nvim-treesitter'] then return end
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--
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-- Custom parsers
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local parser_config = require("nvim-treesitter.parsers").get_parser_configs()
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-- parser_config.make = {
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-- install_info = {
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-- url = "https://github.com/alemuller/tree-sitter-make", -- local path or git repo
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-- files = {"src/parser.c"},
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-- requires_generate_from_grammar = true
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-- }
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-- }
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-- parser_config.just = {
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-- install_info = {
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-- url = "~/dev/tree-sitter-just", -- local path or git repo
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-- files = {"src/parser.c"}
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-- }
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-- -- filetype = "just", -- if filetype does not agrees with parser name
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-- -- used_by = {"bar", "baz"} -- additional filetypes that use this parser
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-- }
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-- Custom text objects
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local textobj_prefixes = O.treesitter.textobj_prefixes
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local textobj_suffixes = O.treesitter.textobj_suffixes
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local textobj_sel_keymaps = {}
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local textobj_swap_keymaps = {}
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local textobj_move_keymaps = {
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enable = O.plugin.ts_textobjects,
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set_jumps = true, -- whether to set jumps in the jumplist
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goto_next_start = {},
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goto_next_end = {},
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goto_previous_start = {},
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goto_previous_end = {},
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}
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for obj, suffix in pairs(textobj_suffixes) do
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if textobj_prefixes["goto_next"] ~= nil then
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textobj_move_keymaps["goto_next_start"][textobj_prefixes["goto_next"] .. suffix[1]] = "@" .. obj .. ".outer"
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textobj_move_keymaps["goto_next_end"][textobj_prefixes["goto_next"] .. suffix[2]] = "@" .. obj .. ".outer"
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end
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if textobj_prefixes["goto_prev"] ~= nil then
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textobj_move_keymaps["goto_previous_start"][textobj_prefixes["goto_previous"] .. suffix[2]] = "@" .. obj .. ".outer"
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textobj_move_keymaps["goto_previous_end"][textobj_prefixes["goto_previous"] .. suffix[1]] = "@" .. obj .. ".outer"
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end
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if textobj_prefixes["inner"] ~= nil then
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textobj_sel_keymaps[textobj_prefixes["inner"] .. suffix[1]] = "@" .. obj .. ".inner"
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end
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if textobj_prefixes["outer"] ~= nil then
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textobj_sel_keymaps[textobj_prefixes["outer"] .. suffix[1]] = "@" .. obj .. ".outer"
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end
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if textobj_prefixes["swap"] ~= nil then
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textobj_swap_keymaps[textobj_prefixes["swap"] .. suffix[1]] = "@" .. obj .. ".outer"
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end
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end
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vim.g.ts_hint_textobject_keys = O.treesitter.hint_labels -- Requires https://github.com/mfussenegger/nvim-ts-hint-textobject/pull/2
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-- Add which key menu entries
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local status, wk = pcall(require, "which-key")
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if status then
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local normal = {
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mode = "n", -- Normal mode
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}
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local operators = {
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mode = "o", -- Operator mode
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}
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wk.register(textobj_sel_keymaps, operators)
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wk.register({
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["m"] = "Hint Objects",
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["."] = "Textsubject",
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[";"] = "Textsubject-big",
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}, operators)
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wk.register(textobj_swap_keymaps, normal)
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wk.register({
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[textobj_prefixes["swap"]] = "Swap",
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-- [textobj_prefixes["goto_next"]] = "Jump [",
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-- [textobj_prefixes["goto_previous"]] = "Jump ]"
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}, normal)
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wk.register(textobj_move_keymaps["goto_next_start"], normal)
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wk.register(textobj_move_keymaps["goto_next_end"], normal)
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wk.register(textobj_move_keymaps["goto_previous_start"], normal)
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wk.register(textobj_move_keymaps["goto_previous_end"], normal)
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end
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require("nvim-treesitter.configs").setup {
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ensure_installed = O.treesitter.ensure_installed, -- one of "all", "maintained" (parsers with maintainers), or a list of languages
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@ -10,14 +89,33 @@ require("nvim-treesitter.configs").setup {
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-- disable = { "c", "ruby" }, -- optional, list of language that will be disabled
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},
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highlight = {
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enable = O.treesitter.highlight.enabled, -- false will disable the whole extension
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enable = O.treesitter.enabled, -- false will disable the whole extension
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additional_vim_regex_highlighting = true,
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disable = { "latex" },
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},
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context_commentstring = {
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enable = O.plugin.ts_context_commentstring.active,
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config = { css = "// %s" },
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},
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context_commentstring = { enable = O.plugin.ts_context_commentstring, config = { css = "// %s" } },
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-- indent = {enable = true, disable = {"python", "html", "javascript"}},
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-- TODO seems to be broken
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indent = { enable = { "javascriptreact" } },
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autotag = { enable = true },
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autotag = { enable = O.plugin.ts_autotag.active },
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textobjects = {
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swap = {
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enable = O.plugin.ts_textobjects,
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swap_next = textobj_swap_keymaps,
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},
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move = textobj_move_keymaps,
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select = {
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enable = O.plugin.ts_textobjects,
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keymaps = textobj_sel_keymaps,
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},
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},
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textsubjects = {
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enable = O.plugin.ts_textsubjects,
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keymaps = { ["."] = "textsubjects-smart", [";"] = "textsubjects-big" },
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},
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playground = {
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enable = O.plugin.ts_playground.active,
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disable = {},
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@ -36,4 +134,9 @@ require("nvim-treesitter.configs").setup {
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show_help = "?",
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},
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},
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rainbow = {
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enable = O.plugin.ts_rainbow.active,
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extended_mode = true, -- Highlight also non-parentheses delimiters, boolean or table: lang -> boolean
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max_file_lines = 1000, -- Do not enable for files with more than 1000 lines, int
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},
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}
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@ -478,6 +478,24 @@ return require("packer").startup(function(use)
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requires = "hrsh7th/nvim-compe",
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disable = not O.plugin.tabnine.active,
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}
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-- Custom semantic text objects
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use {
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"nvim-treesitter/nvim-treesitter-textobjects",
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disable = not O.plugin.ts_textobjects.active,
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}
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-- Smart text objects
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use {
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"RRethy/nvim-treesitter-textsubjects",
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disable = not O.plugin.ts_textsubjects.active,
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}
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-- Text objects using hint labels
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use {
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"mfussenegger/nvim-ts-hint-textobject",
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event = "BufRead",
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disable = not O.plugin.ts_hintobjects.active,
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}
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for _, plugin in pairs(O.custom_plugins) do
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packer.use(plugin)
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end
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