`join-empty-delim`

Subject: JOIN
Category: value
Formula: =JOIN("", {"a","b","c"})
Canonical: abc

Owning divergences (2)

DV-0019 excel: different error code — ARRAYFORMULA, ISDATE, JOIN (+3 more)
error-code excel
DV-0024 formulas, hyperformula, ironcalc, libreoffice, pycel: function not implemented — ISDATE, JOIN
missing-function formulashyperformulaironcalclibreofficepycel

Per-engine results

matches canonical diverges no fixture

Engine	Verdict	Value
gsheets	match	abc
excel	diverge	#NAME?
lattice	match	abc
ironcalc	diverge	#NAME?
hyperformula	diverge	#NAME?
libreoffice	diverge	—
formulas	diverge	#NAME?
pycel	diverge	#NAME?