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author | Walter Bender <walter@sugarlabs.org> | 2010-07-17 15:39:01 (GMT) |
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committer | Walter Bender <walter@sugarlabs.org> | 2010-07-17 15:39:01 (GMT) |
commit | 782915cc52fdefaf9656ead85063d1b71b9d72e7 (patch) | |
tree | 28030da4d7b2711d4f9d1ca21626bcc63d5cfe8d | |
parent | 4621032ae4bf2c46148ea84903bc200a8385b10e (diff) |
more robust error checking
-rw-r--r-- | tautils.py | 2 |
1 files changed, 1 insertions, 1 deletions
@@ -429,7 +429,7 @@ def uncollapse_forks(top, looping=False): def collapse_stack(top): """ Hide all the blocks between the sandwich top and sandwich bottom. """ # First uncollapse any nested stacks - if top.spr == None: + if top == None or top.spr == None: return uncollapse_forks(top) _hit_bottom = False |