convert_jyear(jyear, legacy = FALSE)
convert_jyear("R1")
#> [1] 2019
convert_jyear("Heisei2")
#> [1] 1990
convert_jyear("\u5e73\u6210\u5143\u5e74")
#> [1] 1989
convert_jyear(c("\u662d\u548c10\u5e74", "\u5e73\u621014\u5e74"))
#> [1] 1935 2002
convert_jyear(kansuji2arabic_all("\u5e73\u6210\u4e09\u5e74"))
#> [1] 1991