Enabled incremental search highlighting.

lua/user/options.lua

@@ -6,6 +6,7 @@ vim.opt.completeopt = { "menuone", "noselect" } -- mostly just for cmp
 vim.opt.conceallevel = 0                        -- so that `` is visible in markdown files
 vim.opt.fileencoding = "utf-8"                  -- the encoding written to a file
 vim.opt.hlsearch = true                         -- highlight all matches on previous search pattern
+vim.opt.incsearch = true                        -- Turn on incremental search highlighting.
 vim.opt.ignorecase = true                       -- ignore case in search patterns
 vim.opt.mouse = "a"                             -- allow the mouse to be used in neovim
 vim.opt.pumheight = 10                          -- pop up menu height