[neovim] Add border and max width to floating windows

neovim/init.lua

@@ -457,6 +457,27 @@ vim.keymap.set('n', '[d', vim.diagnostic.goto_prev, { desc = 'Diagnostic: go to
 vim.keymap.set('n', ']d', vim.diagnostic.goto_next, { desc = 'Diagnostic: go to next' })
 vim.keymap.set('n', '<space>q', vim.diagnostic.setloclist, { desc = 'Diagnostic: set loclist' })
 
+-- Add a border to LSP windows
+local _border = "single"
+
+vim.lsp.handlers["textDocument/hover"] = vim.lsp.with(
+  vim.lsp.handlers.hover, {
+    border = _border
+  }
+)
+
+-- TODO: Is this necessary? Or is signature help being handled with LSPSaga?
+--[[
+vim.lsp.handlers["textDocument/signatureHelp"] = vim.lsp.with(
+  vim.lsp.handlers.signature_help, {
+    border = _border
+  }
+)
+--]]
+
+vim.diagnostic.config{
+  float = { border = _border, max_width = 120 }
+}
 -- Use LspAttach autocommand to only map the following keys
 -- after the language server attaches to the current buffer
 vim.api.nvim_create_autocmd('LspAttach', {