>>>>> "Adam" == Adam <adammaj1 at o2.pl> writes:
Adam> On 22.12.2012 11:13, Mario Rodriguez wrote:
>> El s?b, 22-12-2012 a las 11:03 +0100, Adam escribi?:
>>
>>> e3:2*b^2 ? 3*c^2 -1;
>>
>> I get an error when I copy & paste this expression in Maxima. Take a
>> look at the minus signs, they are not the same character in the second
>> and third terms. This works:
>>
>> e3:2*b^2 - 3*c^2 -1;
>>
>> --
>> Mario
>>
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>>
Adam> Thx. That's it.
Adam> Does Maxima has a procedures to find such (syntax) errors ?
Adam> Do you use some programs ( ? editors) to find such errors ?
Not sure what Mario did, but maxima complains
stdin:3025:incorrect syntax: ? is not an infix operator
With cmucl, I then did
(%i12) :lisp (describe #\?)
#\? is a BASE-CHAR.
Its code is #x2212.
Its name is Minus_Sign.
Compare that with
(%i12) :lisp (describe #\-)
#\- is a STANDARD-CHAR.
Its code is #x002D.
Its name is Hyphen-Minus.
Ray