feat(keybinds): Add incremental selection

These keybinds use nvim-0.12 functionality.
Later commits should introduce a backwards compatible option until every
system I use has nvim-0.12 available natively

lua/core/init.lua

@@ -6,10 +6,15 @@ M.setup = function()
 	require("core.filetypes")
 	require("plugins.lazy")
 
-	-- Load this after loading plugins to ensure default lspconfig is there
+	-- Load this after loading plugins to ensure default lsp-config is there
 	require("core.lspconfig")
 	require("core.treesitter")
 
+	-- Load this after loading everything else
+	-- to ensure we are ready for them.
+	require("core.keybinds")
+
+	-- Finally set the colorscheme
 	vim.cmd.colorscheme("gruvbox")
 end
 

lua/core/keybinds.lua

@@ -0,0 +1,51 @@
+-- NOTE: MOST PLUGIN KEY-BINDS ARE LOCATED IN THE PLUGINS SPEC
+-- As a general rule of thumb: 
+--	* if the key-bind requires a given plugin be loaded 
+--	* or is/can be used to lazy-load a plugin
+-- It doesn't belong here
+
+-- NOTE: I am not using any convenience function here.
+-- Instead I am using the `vim.keymap.set` function bare.
+-- This is to make it easier to know what this is doing 
+-- if I come back to edit a binding later.
+
+
+-- ! Use native tree-sitter incremental highlighting when possible.
+if vim.fn.has('nvim-0.12') == 1 then
+	vim.keymap.set({'n','x'}, '<TAB>',
+		function ()
+			require('vim.treesitter._select')
+			.select_next(vim.v.count1)
+		end,
+		{
+			desc = 'Select next Treesitter Node'
+		}
+	)
+	vim.keymap.set({'n','x'}, '<S-TAB>',
+		function ()
+			require('vim.treesitter._select')
+			.select_prev(vim.v.count1)
+		end,
+		{
+			desc = 'Select previous Treesitter Node'
+		}
+	)
+	vim.keymap.set({'n','x'}, '<CR>',
+		function ()
+			require('vim.treesitter._select')
+			.select_parent(vim.v.count1)
+		end,
+		{
+			desc = 'Select parent TS node'
+		}
+	)
+	vim.keymap.set({'n','x'}, '<S-CR>',
+		function ()
+			require('vim.treesitter._select')
+			.select_child(vim.v.count1)
+		end,
+		{
+			desc = 'Select child TS node'
+		}
+	)
+end