Double sign gets errors in algebra.parse()

[sjorsvanheuveln]

This:
algebrea.parse('12 -- 3');

Results in an error:
SyntaxError: Missing operand

After trying some other stuff, it appears it just can't handle negative signs after the operator. E.g. this also fails:
algebra.parse('-1 * -5');

[timleland]

Any workaround for this issue?

[timrach]

What version are you on? When I try this in the browser console at http://algebra.js.org/ it gets parsed and evaluated to "9" - which is not the correct evaluation but also not the Syntax Error you get.

Any workaround for this issue?

The workaround would be to wrap the negative number in brackets: algebra.parse('12 - (- 3)');

[sjorsvanheuveln]

0.2.6

[timleland]

@timrach I wrapped them in brackets. Thanks