josdejong/mathjs — pull request #234 by andy0130tw (2014-11-16 11:11:41+00:00)
Title: Missing separator in error message when multiplying

[1,2,3]*[4,5]
RangeError: Dimension mismatch in multiplication. Length of A must match length of B (A is 3, B is 23 != 2)

The error message is missing a comma.