#10034: Make evaluation possible for 'hold' objects
-------------------------------------+-------------------------------------
       Reporter:  kcrisman           |        Owner:  burcin
           Type:  enhancement        |       Status:  needs_review
       Priority:  major              |    Milestone:  sage-6.10
      Component:  symbolics          |   Resolution:
       Keywords:                     |    Merged in:
        Authors:  Eviatar Bach,      |    Reviewers:
  Ralf Stephan                       |  Work issues:
Report Upstream:  N/A                |       Commit:
         Branch:                     |  026ab3d85d69ccfb756302593d566f31f013e8c6
  u/rws/make_evaluation_possible_for_pynac__hold__objects|     Stopgaps:
   Dependencies:                     |
-------------------------------------+-------------------------------------
Changes (by {'newvalue': u'Eviatar Bach, Ralf Stephan', 'oldvalue': ''}):

 * status:  needs_work => needs_review
 * commit:   => 026ab3d85d69ccfb756302593d566f31f013e8c6
 * milestone:  sage-6.4 => sage-6.10
 * author:   => Eviatar Bach, Ralf Stephan


Comment:

 I used the convenient `ExpressionTreeWalker` that takes care of the
 caveats mentioned above.
 ----
 New commits:
 
||[http://git.sagemath.org/sage.git/commit/?id=026ab3d85d69ccfb756302593d566f31f013e8c6
 026ab3d]||{{{10034: implement Expression.unhold()}}}||

--
Ticket URL: <http://trac.sagemath.org/ticket/10034#comment:19>
Sage <http://www.sagemath.org>
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