don't remap tab, too much pain involved

lua/lsp/init.lua

@@ -55,7 +55,7 @@ function lsp_config.setup_default_bindings()
     vim.cmd "nnoremap <silent> K :lua vim.lsp.buf.hover()<CR>"
     vim.cmd "nnoremap <silent> <C-p> :lua vim.lsp.diagnostic.goto_prev({popup_opts = {border = lvim.lsp.popup_border}})<CR>"
     vim.cmd "nnoremap <silent> <C-n> :lua vim.lsp.diagnostic.goto_next({popup_opts = {border = lvim.lsp.popup_border}})<CR>"
-    vim.cmd "nnoremap <silent> <tab> <cmd>lua vim.lsp.buf.signature_help()<CR>"
+    -- vim.cmd "nnoremap <silent> <tab> <cmd>lua vim.lsp.buf.signature_help()<CR>"
     -- scroll down hover doc or scroll in definition preview
     -- scroll up hover doc
     vim.cmd 'command! -nargs=0 LspVirtualTextToggle lua require("lsp/virtual_text").toggle()'