Shell based completion path selection

install.py

@@ -166,6 +166,15 @@ def copy_completion_scripts(dest_dir):
     print dest_bin_dir
 
     if completion_path:
-        print "You may also want to source the relevant completion script from:"
+        print
+        print "You may also want to source the",
+
+        shell = os.getenv('SHELL')
+        if shell:
+            ext = "csh" if "csh" in shell else "sh"  # Basic selection logic
+            print "completion script (for {0}):".format(shell)
+            print "source {0}/complete.{1}".format(completion_path, ext)
+        else:
+            print "relevant completion script from:"
         print completion_path
     print