MPASM (gpasm?) macro text substitution flaw

repro.asm

    ;; gpasm --mpasm-compatible -p p16f887 repro.asm                                                                                                                                                                
    ;;                                                                                                                                                                                                              
    ;; Should produce four nop, but produces none, because the m2 i
    ;; binding leaks into the m1 i via the n parameter.
    ;;
    ;; See also https://forum.microchip.com/s/topic/a5C3l000000LzjcEAC/t229040

m1  macro   n
    local   i
i   set     0
    while   i < n
i   set     i + 1
    nop
    endw
    endm

m2  macro
    local   i
i   set     4
    m1      i
    endm

    m2

    end