Normalize moves empty string keys to a new file

[jaredmoody]

To translate a blank option in a select in simple form, I have a key that is an empty string:

# config/locales/en_US/projects/tax_options.yml
en_US:
  simple_form:
    options:
      project:
        tax_labor:
          '': Use product default
          'false': Do not tax labor on all items
          'true': Tax labor on all items

Normalize is pulling out only the blank key and adding it to a new file at config/locales/en_US/en_US.yml, which I don't want.

I think this is a bug because AFAIU the conservative router is not supposed to move keys, correct?

[davidwessman]

Would be great if you could write a test case for this.

[jaredmoody]

Sure, here's a failing spec:

main...Jetbuilt:i18n-tasks:empty-string-keys-#579

LMK if you want me to start a PR.

[davidwessman]

@glebm Do you have any suggestion for handling blank keys? The conservative router cannot find a key like es.