#5929: switch from clisp to ecl
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Reporter: was | Owner: mabshoff
Type: enhancement | Status: new
Priority: blocker | Milestone: sage-4.0
Component: porting | Keywords:
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Comment(by tornaria):
Comment for attachment:trac_5929-fix_assumption_hang.patch:
For #5929: fix hang in maxima/ecl due to assumption questions
When maxima asks a question, current code sends CTRL-C
twice to break, then raises an exception. This used to work with
clisp, but for ecl it actually hangs. A test case is given by
{{{
var("Ax,Bx,By")
t = -Ax*sin(sqrt(Ax^2)/2)/(sqrt(Ax^2)*sqrt(By^2 + Bx^2))
limit(t, Ax=0)
}}}
It turns out that it is possible to "break" from the question by just
sending ";" by itself to maxima. The current patch changes to this
method of escaping. It works with clisp or ecl.
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/5929#comment:1>
Sage <http://sagemath.org/>
Sage - Open Source Mathematical Software: Building the Car Instead of
Reinventing the Wheel
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