py/tripe.py.in: Raise an error if a command token contains a newline.

This should never happen, and it confuses the client quite badly if it
does.

diff --git a/py/tripe.py.in b/py/tripe.py.in
index a9be668..db194e2 100644 (file)
--- a/py/tripe.py.in
+++ b/py/tripe.py.in
@@ -446,6 +446,9 @@ class TripeCommand (object):
 
   def __init__(me, words):
     """Make a new command consisting of the given list of WORDS."""
+    for word in words:
+      if '\n' in word:
+        raise TripeInternalError("command word contains newline")
     me.words = words
 
 class TripeSynchronousCommand (TripeCommand):