`cdddff`

Subject: FLATTEN
Category: value
Formula: =FLATTEN({1,2;3,4})
Canonical: {1; 2; 3; 4}

Per-engine results

matches canonical diverges no fixture

Engine	Verdict	Value
gsheets	match	{1; 2; 3; 4}
excel	diverge	#NAME?
lattice	match	{1; 2; 3; 4}
ironcalc	diverge	#NAME?
hyperformula	diverge	#NAME?
libreoffice	diverge	#NAME?
formulas	diverge	#NAME?
pycel	diverge	#NAME?