1812. The relative is sometimes equivalent to a conditional protasis.
When thus used, it may have either the indicative or the subjunctive, as
the sense requires: as,
(_a._) #quod beātum est, nec habet nec exhibet cuiquam negōtium#, _DN._
1, 85, _whatsoever is blessed, has no trouble and makes none to
anybody_. #quisquis hūc vēnerit, pugnōs edet#, Pl. _Am._ 309, _whoever
comes this way, shall have a taste of fists_ (1796). #omnia mala
ingerēbat quemquem adspexerat#, Pl. _Men._ 717, _she showered all
possible bad names on every man she saw_ (1795). (_b._) #haec quī
videat, nōnne cōgātur cōnfitērī deōs esse#, _DN._ 2, 12, _whoso should
see this would be forced, wouldn’t he? to admit the existence of gods_.
#quī vidēret, equom Trōiānum intrōductum dīceret#, _V._ 4, 52, _whoever
saw it would have sworn it was the Trojan horse brought in_ (1559).