I am not understand clearly weird logic match.

Fasmw 1.73

Code:

Ar3  equ 877
Ar1  equ '575'
Ar2  equ '-343'
Txt1 equ 'abcde'#\
        `Ar3,`Ar3#\ 
         '1234'#\
         Ar1#\
         '%f, sv',Ar1,Ar2 
;convert text as one line. But how x cutoff unnecessary signs(like as #\ or ,) ? 
match x,Txt1 {Txt1 equ x} 

;This logic more clearly and I understand it.
tt equ for 44,42 aff 55
match =for x=aff b, tt { }
;b=55  x=44,42  and match cutoff for and aff

;not clearly understand this logic match
match a b, tt { }
;a=for b=44,42 aff 55

;Weird this
eggs equ for,50 ,13 aff 52
match a b, eggs { display a,13,10 }
;a=for   b=,50 ,13 aff 52 why not b=50 ,13 aff 52 ?

match a=, b, eggs { display b,13,10 }
;a=for   b=50 ,13 aff 52

And sometimes match work as if.