Locale oddity

[Morten Bo Johansen]

Hi

(This is FreeBSD 12.1-RELEASE-p7 amd64)

If I unset the $LANG variable, then all other LC_* category
locale variables will automatically be set to "C" except for
the $LC_ALL variable:

  ~/ % LANG= locale
  LANG=
  LC_CTYPE="C"
  LC_COLLATE="C"
  LC_TIME="C"
  LC_NUMERIC="C"
  LC_MONETARY="C"
  LC_MESSAGES="C"
  LC_ALL=

Otherwise they are:

  ~/ % locale    
  LANG=da_DK.UTF-8
  LC_CTYPE="da_DK.UTF-8"
  LC_COLLATE="da_DK.UTF-8"
  LC_TIME="da_DK.UTF-8"
  LC_NUMERIC="da_DK.UTF-8"
  LC_MONETARY="da_DK.UTF-8"
  LC_MESSAGES="da_DK.UTF-8"
  LC_ALL=

I don't understand this behaviour. Could someone explain the
logic of this to me?

To me it seems like a bug.

Thanks,
Morten