type inference issue

[orefalo]

Describe the bug:

murex-utils » a=33
murex-utils » echo $a
33
murex-utils » round ${$a * $a} 1
Error in `expr` (0,2): cannot Multiply non-numeric data types
                     > Expression: $a * $a
                     >           :    ^
                     > Character : 4
                     > Symbol    : Multiply
                     > Value     : ''

Expected behaviour:
It looks like a=33 is infered to be a string,
I would expect 1089 as an output

[lmorg]

Coincidentally this is down the the double parsing we chatted about earlier. The expression pre-parser doesn't expand variables (for speed) but I'd forgotten to add a check that variables are valid values.

Fix pushed to develop

[lmorg]

(I’m actually a little annoyed at myself for not having this covered in a test)

[orefalo]

fixed, ty