Numeric expressions of scalars require white space

[Piero Campalani]

When writing math expressions between scalars, the parser requires a white space between the operands and the operator(s).

This does not happen when coverage expressions are involved (eg see alternative e in the example below).

for c in (eobstest)
return encode (
    coverage histogram
    over     $i x(0:9)  
a)  values   9999+1        <- ERROR
b)  values   9999 + 1      <- OK
c)  values   9999 > 1+1    <- ERROR
d)  values   9999 > 1 + 1  <- OK
e)  values   max(c)+1      <- OK
, "csv")

#ERROR (log): line 3:11 no viable alternative at input 'histogram'

[Bang Pham Huu]

I think this ticket is duplicate with this older ​http://rasdaman.org/ticket/406, so will close it here.