Parser error when escaping backslash in a macro

[dansalvato]

Another instance of macros defeating the parser with their strange syntax exceptions.

Basically, vasm lets you access local labels from out of scope using the convention global_label\.local_label. In macros, the backslash is used for special macro parameters, so it needs to be escaped for other uses. That means in macros, local labels are referenced like global_label\\.local_label, which results in the LSP parser error.

SETLOCAL    MACRO
_LOCAL      SET         \1\\.local    ; Parser error
            ENDM

test_function:
            nop
.local:     nop
            rts

test_function2:
            SETLOCAL    test_function
            lea         _LOCAL,a0
            rts