posneg labels as function arguments fail

[Alcaro]

[18:29:26]  <Sir Walrus> !rb as2
function test(b,a) = 42
- PEA test(-,+) : +
[18:29:27]  <randombot999#8226> Errors occurred while assembling.
<input>:3: error: (Einvalid_number): Invalid number.
    in block: [- PEA test(-,+)]
[18:29:49]  <Sir Walrus> !rb as2
function test(b,a) = 42
- PEA test((-),+) : +
[18:29:49]  <randombot999#8226> F4 2A 00
[18:29:54]  <Sir Walrus> that's probably an asar bug...

i'm sure there's a check somewhere that ) or nul after a string of + or - becomes a label, should add , to that check