diff -up src/sage/interfaces/giac.py.orig src/sage/interfaces/giac.py
--- src/sage/interfaces/giac.py.orig	2018-12-22 16:37:08.000000000 -0700
+++ src/sage/interfaces/giac.py	2019-01-15 15:10:47.399759655 -0700
@@ -617,10 +617,7 @@ If you got giac from the spkg then ``$PR
             '4\n3'
             sage: s='g(x):={\nx+1;\nx+2;\n}'
             sage: giac(s)
-            (x)->{
-            x+1;
-            x+2;
-            }
+            (x)->[x+1,x+2]
             sage: giac.g(5)
             7
         """