Updates:
Labels: CodeInDifficulty-Hard NeedsReview smichr
Comment #3 on issue 2530 by smi...@gmail.com: collect shouldn't consider a
collection a success unless something was collected...right?
http://code.google.com/p/sympy/issues/detail?id=2530
With ( https://github.com/sympy/sympy/pull/664 ) this gives
e
(D**3*a + 2*Re*a*b + aA**3*b)/Re
collect_terms(e+a*b,*[aA**3/Re, b])
a*b + (D**3*a + b*(2*Re*a + aA**3))/Re
So either the new routine or a patch to the old one could be made (i.e. not
considering a collection to have succeeded if nothing changed). I'm marking
it CID-hard since the collect routine is a bit dense.
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