I've gone ahead and removed it in my forthcoming branch for now.  With
the changes I've made so far, the issue from 3022,
S("-I*exp(-3*I*pi/4)/(4*pi**(3/2)*sqrt(t))").expand(complex=True),
doesn't give a recursion error.

Aaron Meurer

On Mon, Jul 16, 2012 at 8:15 PM, Chris Smith <[email protected]> wrote:
> On Mon, Jul 16, 2012 at 9:03 PM, Aaron Meurer <[email protected]> wrote:
>> Chris, can you explain what's going on in Add._eval_expand_mul?  This
>> is breaking the pattern of all the other do-nothing _eval_expand
>> functions, and I don't understand what it's supposed to be doing.  Is
>> this a hack, or do you think all such noop functions should be written
>> this way?
>>
>> The relevant commit is 6b892e98.
>>
> Perhaps I can check on this in the next day or two.
>
> /c
>
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