When I paste the following code into a notebook worksheet in magma
mode, I consistently get "Syntax Error". When I paste the same code
directly into magma, it works properly:
{{{
_<x>:=PolynomialRing(Rationals());
repeat
g:=3*b*x^4+18*c*x^3-6*b^2*x^2-6*b*c*x-b^3-9*c^2 where
b:=Random([-10..10]) where c:=Random([-10..10]);
until Roots(g) ne [];
}}}
[note: the whole definition of g is on one line]
If I replace the line by something shorter, like
{{{
g:=x^3+b*x+c where b:=Random([-10..10]) where c:=Random([-10..10]);
}}}
there is no error.
When I place a newline before the first "where" I also do not get an
error.
So it seems like notebook+magma interface+long lines+multiple
statements is unstable.
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