Combined post-operators?

c++;    // c = c + 1
++c;    // ditto

c += 5;    // c = c + 5
s .= ", world";    // s = s . ", world"; e.g. PHP

s =. "Hello ";    // s = "Hello " . s

a=-5;    //'a = -5' or 'a =- 5'?
b=*p;    //'b = *p' or 'b =* p'?
c=.5;    //'c = .5' or 'c =. 5'?

x=x+1;

x+=1;

x++;