On Fri, May 3, 2019 at 5:06 PM E. Madison Bray <erik.m.b...@gmail.com> wrote:
>
> On Mon, Apr 29, 2019 at 2:30 AM Andrey Novoseltsev <novos...@gmail.com> wrote:
> >
> > Hello,
> >
> > I got a report about GAP problem in SageMathCell, but it looks like the GAP
> > interface in Sage itself is having issues. I am getting an empty string
> > from the following command:
> > sage: print(gap.eval("""
> > ....: D_4 := SmallGroup(8,3);
> > ....: IsAbelian( D_4 );
> > ....: List( ConjugacyClasses( D_4 ), Size );
> > ....: IsCyclic( D_4 );
> > ....: Size( AllSubgroups( D_4 ) );
> > ....: Size( Set( D_4, Order ) );
> > ....: IsSolvable( D_4 );"""))
> >
> > All commands work fine in GAP and even in Sage each one seems to be
> > working, but certain combinations of them do not, while some do - I can't
> > understand the system here...
> >
> > Does anyone have any ideas on what is going on?
>
> It might be a bug in the pexpect interface I guess. If I try, say,
> just the first 2 or 3 snippets of the code you gave above I get the
> full output. But by the `Size( AllSubgroups( D_4 ) );` it becomes
> empty. I if I do just `D_4 := SmallGroup(8,3); Size( AllSubgroups(
> D_4 ) );` it produces the correct output.
Oh duh, I re-read the rest of the thread, and as Vincent pointed out,
this is above the (seemingly arbitrary?) _eval_using_file_cutoff.
I'm not sure why that's so buggy but I'm sure we can figure it out...
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