[request] treat macro parameters as local symbol references

[antis81]

(Referring to current "dev" branch here.) Should macro parameters (assignments in braces) in bass be treated just like macro-local references?

ACME example (suitable as a test):

!macro inc_store ~.var, ~.call {  ;no braces in ACME
   .var = .var+1  ;var_1 = 43
   jsr .call
}

;zeropage
!section "zp", start=0x0
*=0x2
stored_result: !byte 0

!section "calls", start=0x1234
var_1 = 42
call:
  .store:
     lda #var_1
     sta stored_result
     rts

; start of program
!section "code", start=*
inc_store(var_1, call.store) ;-> stored_result = 43
; do something with stored_result
inc_store(var_1, call.store) ;-> stored_result = 44
; do more with stored_result

Can't we treat all macro parameters by reference and as well imply those are macro-local?

Macro in bass according to the above example:

!macro inc_store(var, call) {
  ; defines:
  ;   __macro_0.var = ~var_1  ; reference to global label
  ;   __macro_0.call = ~call.store

  .var = .var+1  ;var_1 = var_1+1 -> breaks the "__macro_0" scope)
  jsr .call
}

:bulb: This can solve/replace the "shadowed symbol" list (solve it for good!?). :bulb: The main issue is with global labels inside macros producing unwanted side effects (e.g. overwrite the __macro_<ID> label).