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; dot repeater is partially tested in docs_examples, here are more complex cases and errors
.16 ld (hl),c ; 16x 0x71
x:
.( ( 2*2 ) + 12 ) ret z ; 16x 0xC8
.(x) ld (hl),d ; 16x 0x72
;; syntax errors
.2.3 nop ; there must be space after repeat-counter
. 16 nop ; but no space after dot
. (16) nop
.-1 nop
.(zz) nop ; undefined label
.16+2 nop ; expressions must be in parentheses
.1 +2 nop ; expressions must be in parentheses (this one is ugly :/ )
;; value errors
.0 nop ; counter must be positive value
.(x-32) nop ; error should show calculated repeat-counter value
;; whole expression must be enclosed in parentheses (did work as "x7" up to v1.17.0)
.(-1) +8 nop ; error -1 count
.(4-2) and 1 ; counter example why the above is NOT harmless (revealed in v1.17.0)
; this produces 2x "and 1" (in v1.17.0 it does instead add `and 1` to expression)
.(5-3 and 2 ; parentheses are not closed
.(6-4)) and 3 ; one too many closing parentheses