merge is making active.und.json & translate.und.json

[joeblew99]

Should not be making these “…und …” files right ?

Had a look here:
https://github.com/nicksnyder/go-i18n/blob/master/v2/i18n/localizer.go#L129

Reprod:

ls -al
active.de.json
active.en.json 
active.fr.json
active.ja.json                  


touch assets/i18n/translate.cz.json

ls -al

active.de.json
active.en.json 
active.fr.json
active.ja.json  
translate.cz.json


goi18n merge -format json -outdir assets/i18n/ assets/i18n/active.en.json assets/i18n/translate.cz.json


ls -al
active.de.json
active.en.json 
active.fr.json
active.ja.json  
active.und.json
translate.cz.json
translate.und.json

I am on a Mac with Lang set to EN.