#102 Hex constants after "(" are not recognized

[Guenther Brunthaler]

If a hexadecimal constant follows directly after an opening parenthesis without being separated from it by whitespace, Qalculate! fails to parse the expression.

For instance, using the "qalc" command-line tool, the expression

> (0xff)

error: "ff" is not a valid variable/function/unit.
0 * x = 0

yields an error, while

> ( 0xff)

255 = 255

(note the space) works without problems.

[Jonathan Stickel]

Still broken in 0.9.7

[Cousteau]

I can reproduce this bug. 0x10 is interpreted correctly but (0x10) is interpreted as 0*x*10.
Also, ( 0x10) (with space) is interpreted as ( * 0x10), returning the right result but issuing a warning about a misplaced * operator.