nvim/cmp: load snippets per filetype

.config/nvim/ftplugin/go.lua

@@ -1 +1,17 @@
 vim.bo.expandtab = false
+
+do
+    local luasnip = require("luasnip")
+    local s = luasnip.snippet
+    local t = luasnip.text_node
+    local cr = function() return t { "", "" } end
+    local i = luasnip.insert_node
+
+    luasnip.add_snippets("go", {
+        s("ie", {
+            t("if err != nil {"), cr(),
+            t("\t"), i(0), cr(),
+            t("}"),
+        }),
+    })
+end