Re: Fix 153: \once\set properly restores the context property (issue4810042)

[joeneeman]

If you do

\set #'foo = #1
c
\once \set #'foo = #2
c
\once \set #'foo = #3
c

then the final value of foo should be 1. But with this code, I think it
will be 2.

http://codereview.appspot.com/4810042/