Force MATLAB to make only commas as column separators -

the other day discovered following bug in couple of places in matlab code

i wanted enter column vector in matlab script

[a-b,  c-d  e-f] 

where a,b,c,d,e,f long expressions in variables.

and entered in

 [ -b ;    c -d ;    e -f] 

now matlab interprets second matrix 3x2 matrix instead of column vector. there way/command/function force matlab use comma , not white space characters column separator matrices ?

assuming have piece of code in want have column vectors , no matrix, there quick solution:

replace {space}+ +

replace {space}- -

it quite safe , unless have complicated expressions in vector should trick.