Gender markers for Japanese

[Asahi Koboshi]

Gender male markers for Japanese.

ja : [ /(男|息子|父)/g ],

Gender female markers for Japanese.

ja : [ /(女|娘|母)/g ],

No (\s) should be included, as the language does not use whitespaces. Letter cases do not exist in Japanese.

[Robin van der Vliet]

Added in pull request #52