update

version2.0/lib/readline.nas

@@ -0,0 +1,12 @@
+# nasal lib readline.nas
+# 2020/2/6
+# this file is used to avoid name confliction
+# and is used to avoid name undefined
+# before running this file will be translated to abstract syntax tree
+# and this ast will be linked before main ast as main-ast's beginning
+
+# GNU Readline Library
+var readline=func(prompt="> ")
+{
+    return;
+}